Fluke PM3370B - Manuals

VII INSIDE THIS MANUAL This operating guide contains information on all of the oscilloscope’s features. It starts with a general introduction, a summary of main capabilities, initial inspection note and a front and rear view. Operators safety Chapter 1 should be read before unpacking, installing, an...

VIII CONTENTS CONTENTS Page 1 OPERATORS SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

CONTENTS IX 3 GETTING STARTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1 FRONT-PANEL LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.2 SWITCHING ON THE INSTRUMENT . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.3 SCREEN CONTROLS . ....

X CONTENTS 4.6 DIGITAL ACQUISITION AND STORAGE . . . . . . . . . . . . . . . . . . . 4-30 4.7 ADVANCED VERTICAL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . 4-31 4.8 ADVANCED HORIZONTAL AND TRIGGER FUNCTIONS . . . . . 4-34 4.9 MEMORY FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . ....

CONTENTS XI Appendix A ACQUIRE menu structure . . . . . . . . . . . . . . . . . . . . . . A-1 Appendix B CURSORS menu structure . . . . . . . . . . . . . . . . . . . . . B-1 Appendix C DISPLAY menu structured . . . . . . . . . . . . . . . . . . . . C-11 Appendix D MATHEMATICS menu structure . . . . ...

XIII FRONT PANEL CONNECTIONS Probe AdjustSquarewave output signal for e.g. probe calibration. Amplitude is calibrated. CH1BNC input socket for vertical channel 1 with probe indication contact. CH2BNC input socket for vertical channel 2 with probe indication contact. CH3BNC input socket for vertical ...

XIV REAR PANEL CONNECTIONS Z-MODBNC input socket for external intensity-modulation of the CRT trace. RS-232 BUS (EIA-232-D)Input/output socket to connect the oscilloscope to an RS-232 Interface. LINE INLine input socket. Fuse holder is built in. NC RXD TXD DTR DSR RTS CTS NC NC=NOT CONNECTED 1 6 5 9...

XV OPTIONAL REAR PANEL CONNECTIONS CH1 Y-OUTBNC output socket with a signal derived from the Channel 1 input signal. MAIN TB GATEBNC output socket with a signal that is "high" when the Main Timebase is running and "low" for the other conditions. DTB GATEBNC output socket with a signa...

OPERATORS SAFETY 1 - 1 1 OPERATORS SAFETY ATTENTION: The instrument is designed for indoor use only.Read this page carefully before installation and use of the instrument. 1.1 INTRODUCTION The instrument described in this manual is designed to be used by proper-ly-trained personnel only. Adjustment,...

1 - 2 OPERATORS SAFETY 1.4 SYMBOLS Read the safety information in the manual. Earth. Conformité Européenne. Recycling information. 1.5 IMPAIRED SAFETY PROTECTION The use of the instrument in a manner not specified may impair the protection provided by the equipment. Before use, inspect the instrumen...

INSTALLATION INSTRUCTIONS 2 - 1 2 INSTALLATION INSTRUCTIONS Attention: You are strongly advised to read this chapter thoroughly before installing your oscilloscope. 2.1 SAFETY INSTRUCTIONS 2.1.1 Protective earthing Before any connection to the input connectors is made, the instrument shall be connec...

INSTALLATION INSTRUCTIONS 2 - 3 2.2 MEMORY BACK-UP BATTERIES 2.2.1 General information Memory backup is provided to store the oscilloscope’s settings when switched off so that the instrument returns to the same settings when turned on. Two AA (LR6) Alkaline batteries are used. Note: The batteries ar...

2 - 4 INSTALLATION INSTRUCTIONS 2.4 HANDLE ADJUSTMENT AND OPERATING POSITIONS OF THE INSTRUMENT By pulling both handle ends outwards away from the instrument, the handle can be rotated to allow the following instrument positions: - vertical position on its rear feet; - horizontal position on its bot...

INSTALLATION INSTRUCTIONS 2 - 5 2.6 RS-232-C SERIAL INTERFACE Your oscilloscope is equipped with an RS-232-C interface as standard. The interface can be used in a system for serial communication. The protocol used is CPL (Compact Programming Language). CPL is a small set of very powerful commands th...

GETTING STARTED 3 - 1 3 GETTING STARTED This chapter provides a 10-minute tutorial intended for those who are not familiar with Fluke oscilloscopes. Those who are already familiar can skip this chapter and continue to Chapter 4. 3.1 FRONT-PANEL LAYOUT This oscilloscope is a combination of an analog ...

3 - 2 GETTING STARTED Typical operation of your instrument will be: - Switching on the instrument (see Section 3.2) - Initial standard setup (see Section 3.2) - Screen controls (see Section 3.3) - Auto setup (see Section 3.4) - Analog-Digital mode switching (see Section 3.5) - Vertical setup (see Se...

GETTING STARTED 3 - 3 3.3 SCREEN CONTROLS The screen controls can be adjusted for optimum trace, text and spot quality by the controls to the left of the screen. The brightness on the screen is adjusted by two controls, one for the trace and one for the text. • Turn the TRACE INTENSITY control clock...

3 - 4 GETTING STARTED 3.4 AUTO SETUP The best way to start each measurement is by using the AUTOSET key. This automatically finds and scales all relevant parameters on all channels. Step 1 Connect the probe as shown in figure 3.3. NOTE: AUTOSET is programmable. Because you have set the instrument in...

GETTING STARTED 3 - 5 Step 4 To prevent measurement errors, check the pulse response before any measurement. If the pulse shows overshoot or undershoot, you can correct this by using the trimmer in the probe’s body. Chapter 4 describes how to adjust the pulse response. In most cases, using AUTO SETU...

GETTING STARTED 3 - 7 SIGNAL CRITERIA ANALOG MODE DIGITAL MODE You need to make adjustments Fastest Slower to the circuitry and watch display display the signal change update update Automatic measurements Can’t use Fully implemented Signal Math Add, Subtract All functions Add, Subtract, Multiply Sig...

3 - 8 GETTING STARTED Step 3 Press AUTOSET again. This time the scope performs the autoset in digital mode. Step 4 Press the RUN/STOP key and observe that the trace is frozen and stays on screen even after removing the probe. Step 5 Press the RUN/STOP key to display the actual input signal again. Re...

GETTING STARTED 3 - 9 Step 3 You can change the amplitude of the signal in a 1, 2, 5 sequence by pressing one of the AMPL keys. Note that the bottom of the screen shows the AMPL/DIV setting of CH1. Step 4 Press the ON button of CH2 and observe that a second trace is now visible. The position and amp...

3 - 10 GETTING STARTED Step 6 Press the ANALOG key to enter the digital mode Step 7 Press the top one (mV) of the AMPL keys, so that the signal has maximum amplitude. Press AUTO RANGE and see the signal change to a suitable attenuator value. When AUTO RANGE is active, the attenuators automatically a...

GETTING STARTED 3 - 11 3.7 TIMEBASE SETUP The next step is the adjustment of the main timebase controls (TIME/DIV, X POSition, and MAGNIFY keys). Step 1 Press the AUTOSET key. Step 2 Use the TIME/DIV keys on the right hand side of the instrument to decrease or increase the number of periods of the s...

3 - 12 GETTING STARTED 3.8 MAGNIFY (EXPAND) Step 1 You can use the MAGNIFY keys to expand the signal on the screen. The ’MGN’ indication and the corrected timebase setting are displayed in the text line.In the analog mode, magnification is limited to * 10. The right key will activate the magnificati...

GETTING STARTED 3 - 13 3.9 DIRECT TRIGGER SETUP Now you are ready to set your trigger conditions. You will use one of the channel selection keys (TRIG1, TRIG2, TRIG3, TRIG4 or EXT TRIG) and the TRIGGER LEVEL control. Step 1 Press the AUTOSET key. The square-wave signal of the Probe Adjust output is ...

3 - 16 GETTING STARTED 3.11 MORE ADVANCED FEATURES All basic functions are accessed by dedicated keys for fast and easy operation. Some of the more advanced features are menu operated. Menus are called up by pressing one of the keys identified with blue text on the front panel. After you press one o...

GETTING STARTED 3 - 17 3.12 CURSOR OPERATION Cursors are used for accurate amplitude or time measurements of the signal. Step 1 Before you continue, reset the instrument with the STANDARD SETUP. To do this, press the STATUS key and TEXT OFF key simultaneously. Now the instrument is set in the defaul...

GETTING STARTED 3 - 19 3.13 MORE ADVANCED TRIGGER FUNCTIONS Most of the trigger functions (source, slope, and level) can be controlled with direct access to the functions (see Section 3.9). A CRT menu is used for more advanced trigger functions. Press the menu key TRIGGER. This turns the menu on. An...

3 - 20 GETTING STARTED 3.14 MORE SIGNAL DETAIL WITH THE DELAYED TIMEBASE When you need to study a part of a signal in more detail, a second (delayed) timebase is available. This timebase has its own timebase settings and trigger level adjustment. Additional selections are made in the DELAYED TIMEBAS...

3 - 22 GETTING STARTED 3.15 TRACE STORAGE In the digital mode you not only have the ability to store traces on the screen (using the RUN/STOP key), but also to store traces in memory for later use. Store traces on screen: Step 1 Press AUTOSET. Step 2 Make sure that the scope is in the digital mode. ...

HOW TO USE THE INSTRUMENT 4 - 1 4 HOW TO USE MORE ADVANCED FUNCTIONS OF THE INSTRUMENT This chapter allows more experienced oscilloscope users to learn more about the advanced features of this instrument and how to use them. For a complete description of each function, refer to the next chapter in t...

HOW TO USE THE INSTRUMENT 4 - 3 FRONT PANEL LAYOUT The controls on the front panel are grouped by function. In this chapter, a description for each group of controls is given in the following sequence: - Display and probe adjustment (see section 4.2) - Analog and digital modes (see section 4.3) - Ve...

HOW TO USE THE INSTRUMENT 4 - 5 4.2 DISPLAY AND PROBE ADJUSTMENTS To help you follow the step-by-step descriptions, each section begins by recalling the standard setting as outlined below.If you get "lost", you can return to the beginning of each section, because all functions are set to a p...

4 - 6 HOW TO USE THE INSTRUMENT DISPLAY LAYOUT The following illustration shows the layout of the display with a maximum amount of text.Most text is active only when specific functions are activated.

HOW TO USE THE INSTRUMENT 4 - 7 MENUS TEXT OFF A menu appears when a key with blue text is pressed.The menu functions can be selected by pressing the blue softkeys to the right side of the screen. - Press the ANALOG key to select the digital mode. - Press the DISPLAY key to activate the menu. Each m...

4 - 8 HOW TO USE THE INSTRUMENT CAL SIGNAL AND PROBE ADJUSTMENT Each measuring probe has been checked and adjusted before delivery. However, to match the probe to your oscilloscope, you must perform the following procedure to optimize the pulse response of the combination of oscilloscope input and p...

HOW TO USE THE INSTRUMENT 4 - 9 4.3 ANALOG AND DIGITAL MODES This instrument is a combination of an analog real-time oscilloscope and a digital storage oscilloscope, which offers a variety of additional features.The combination of analog and digital modes in one instrument gives you the advantages o...

HOW TO USE THE INSTRUMENT 4 - 11 STANDARD SETTING - Simultaneously press the STATUS and TEXT OFF keys. - Connect the Probe Adjust signal to channel 1. The Probe Adjust signal, now supplied to the input, is a square wave with a lower level of 0V and a top level of 600 mV. The oscilloscope always oper...

4 - 12 HOW TO USE THE INSTRUMENT TRACE STORAGE RUN/STOP The digital mode offers a set of powerful features. One of the most important advantages is that you can store one or more traces in memory or on screen. - Press the RUN/STOP key to stop the signal acquisition and freeze the display on the scre...

HOW TO USE THE INSTRUMENT 4 - 13 4.4 VERTICAL DEFLECTION The section shown on the left contains all direct vertical deflection controlls for the input channels 1 and 2. Refer to Section 4.1 for the differences between model numbers. To start this section with the settings in a predefined state, you ...

4 - 14 HOW TO USE THE INSTRUMENT VERTICAL COUPLING AC, DC, GND The input coupling after AUTOSET is ac. Since the Probe Adjust signal is a pulse type signal with a 50% duty cycle, its mean value is at the signal’s 50% amplitude level. When the input is ac coupled, the mean value will be displayed at ...

HOW TO USE THE INSTRUMENT 4 - 15 VERTICAL POSITION Use the POS control to adjust the ground level to any desired vertical position on the screen. - Use the position control to position the line in the middle of the screen. Observe that the channel identifier ’1-’ shifts with the trace. - Press the A...

4 - 16 HOW TO USE THE INSTRUMENT VERTICAL AMPLITUDE - Press the upper key of the AMPL keys Pressing the upper key increases the amplitude of the displayed waveform. As the amplitude of the displayed waveform changes, the screen readout of the input sensitivity changes as well.If you adjust the displ...

4 - 18 HOW TO USE THE INSTRUMENT VERTICAL CH1+CH2 - Using two probes, connect the Probe Adjust signal to Ch1 and Ch2. - Press AUTOSET. - Both Ch1 and Ch2 are now displayed. - Adjust POS and AMPL to get a display as illustrated on the left below. - Press the CH1+CH2 key. In the analog mode, a third t...

4 - 20 HOW TO USE THE INSTRUMENT VERTICAL MENU BANDWIDTH LIMITER The Bandwidth Limiter reduces the bandwidth of the vertical channels to 20 MHz. This is done by activating a filter in the vertical channels. This feature can be used both in analog mode and in digital mode to suppress high frequency n...

HOW TO USE THE INSTRUMENT 4 - 21 VERTICAL MENU 50 Ω The 200 MHz models offer the selection of an input impedance of 50 Ω on all input channels. The EXTTRIG input has no 50 Ω possibility. The impedance selection is a subfunction in VERT MENU.The 50 Ω input impedance is used to obtain a correct impeda...

4 - 22 HOW TO USE THE INSTRUMENT 4.5 HORIZONTAL DEFLECTION AND TRIGGERING Before starting with the horizontal deflection functions, you must set the instrument to a predefined state to create a correct start situation. STANDARD SETTING - Simultaneously press the STATUS and TEXT OFF keys. - Connect t...

HOW TO USE THE INSTRUMENT 4 - 23 TIMEBASE AUTO RANGE The AUTO RANGE function continuously adjusts the timebase to a display of 2 to 6 waveform periods. - Press the AUTO RANGE key. Observe that the timebase of the signal display changes to display 2 to 6 signal periods. AUTO TB in the upper right cor...

4 - 24 HOW TO USE THE INSTRUMENT TIMEBASE MAGNIFY The displayed signal can be expanded horizontally so that more signal detail becomes visible. In the analog mode, a * 10 magnification is possible and the entire sweep length can be made visible by turning the X POS control. - Press the right MAGNIFY...

HOW TO USE THE INSTRUMENT 4 - 25 TIMEBASE X POS With X POS the displayed signal is shifted horizontally across the display. - Turn the X POS control clockwise. Observe that a bar graph ( ) is displayed.The block on the bar graph shows which part of the digital trace is displayed as expanded. This bl...

HOW TO USE THE INSTRUMENT 4 - 27 TRIGGER TRIGGER LEVEL After each AUTOSET, the trigger level is always clamped within the signal amplitude range to assure stable triggering on most signals. The trigger level is adjustable, but it is limited between the minimum (-100%) and the maximum (+100%) amplitu...

HOW TO USE THE INSTRUMENT 4 - 29 TRIGGER SINGLE SHOT - Make sure the instrument is in the Digital Mode. - Press AUTOSET. This sets up the scope with the proper amplitude and timebase settings. - Remove the probe tip from the Probe Adjust output. - Turn the TRIGGER POSITION to mid-screen (countercloc...

4 - 30 HOW TO USE THE INSTRUMENT 4.6 DIGITAL ACQUISITION AND STORAGE This section gives you a short introduction to digital acquisition and storage in order to provide the basic knowledge and terms. This information is necessary for you to understand all digital statements in the following sections ...

HOW TO USE THE INSTRUMENT 4 - 31 4.7 ADVANCED VERTICAL FUNCTIONS All basic functions of the oscilloscope are accessible via direct action front panel keys.More advanced functions are easily accessible via the menus behind the menu initialization keys (keys with their function name in blue text). STA...

4 - 32 HOW TO USE THE INSTRUMENT ACQUIRE AVERAGE The average function averages the input data over a number of successive acquisitions. The average function is used to reduce the influence of random noise in the input signal. There is no loss of bandwidth when the average function is activated, but ...

HOW TO USE THE INSTRUMENT 4 - 35 TRIGGER LEVEL - Press the ’level-pp’ softkey to turn it off. The automatic level detection circuitry is turned off. The trigger level is no longer clamped within the peak-peak range of the signal. You must adjust the proper trigger level. While you turn the TRIGGER L...

4 - 36 HOW TO USE THE INSTRUMENT TRIGGER MODE TRIGGERED - Press the TB MODE key. In the screen, the timebase mode (TB MODE) menu appears. ’auto’ is intensified. With the "auto" mode turned on, the timebase will run free as soon as no triggering signal is detected, in order to provide a base ...

HOW TO USE THE INSTRUMENT 4 - 37 TRIGGER MODE ROLL - Press the ANALOG key to select the digital mode. - Press the TB Mode key to enter the TB mode menu The TB MODE menu is extended with extensive timebase modes. The differences are as follows:• A Roll mode • Selection of ’Real-time only’ • Delay by ...

HOW TO USE THE INSTRUMENT 4 - 39 4.9 MEMORY FUNCTIONS The next section deals with storing and recalling traces in memory for later use.Functions related to trace storage and recall are easily accessible via the menus selection keys labeled ’SAVE" and ’RECALL’. STANDARD SETTING Before continuing ...

4 - 40 HOW TO USE THE INSTRUMENT TRACE STORAGE SAVE - Turn the TRACK control to select the memory location in which to store the trace data. Observe that eight memory locations ’m1 to m8’ (or 50 memory locations when extended memory is installed) scroll through the menu. All locations are marked wit...

HOW TO USE THE INSTRUMENT 4 - 41 TRACE STORAGE COPY A trace can be copied from one memory location to another. - Press the ’COPY’ softkey. The ’COPY MEMORY’ is now displayed. The source (’FROM’) and destination (’TO’) memory locations can be selected in this submenu. - Turn the TRACK control to sele...

4 - 42 HOW TO USE THE INSTRUMENT TRACE STORAGE RECALL If you completed all of the previous steps, three memory locations are occupied by trace information. You can display these stored traces at any time and in any combination. - Press the RECALL key. - Turn the TRACK control to select ’m1’. - Press...

HOW TO USE THE INSTRUMENT 4 - 43 TRACE STORAGE SAVING MULTIPLE TRACES Each memory location can store two channels. - Connect the probe to channel 1. - Press AUTOSET. - Switch on channel 2. - Turn the channel 2 POS control counterclockwise. The upper trace displays the signal of channel 1, and the lo...

4 - 44 HOW TO USE THE INSTRUMENT 4.10 CURSORS FUNCTIONS Cursors are provided to make fast and accurate amplitude and time measurements. These can be done in digital mode as well as in analog mode. The analog mode of the oscilloscope is often used to accurately display complex waveforms, such as in A...

HOW TO USE THE INSTRUMENT 4 - 45 CURSORS ON/OFF There are two sets of cursors : amplitude cursors and time cursors. Amplitude cursors are two horizontal lines, and Time cursors are two vertical lines. The dashed lines are referred to as reference cursors and the dotted lines are referred to as delta...

4 - 46 HOW TO USE THE INSTRUMENT CURSORS VOLT - Use the softkeys, to select the amplitude cursors (’=’ intensified). Two amplitude cursors will appear in the display.The menu permits the channel to be selected for which the amplitude cursors apply.When channel 1 is the only channel displayed, ’ch1’ ...

HOW TO USE THE INSTRUMENT 4 - 47 CURSORS READOUT - Press the softkey next to ’READOUT’. The ’CURSOR READOUT’ selection menu for horizontal and vertical measurements is now displayed. You can make the following selections from this menu: ∆ T, 1/ ∆ T, ∆ T-ratio, T-trg and phase for time measurements. ...

4 - 48 HOW TO USE THE INSTRUMENT CURSORS READOUT ∆ T-RATIO/PHASE First, the reference distance between the two cursors is set. This then is set to 100 % (360 ° ) by pressing the ∆ T=100 % (360 ° ) softkey. Changing the distance between the cursors now results in a % ( ° ) reading of the reference. -...

HOW TO USE THE INSTRUMENT 4 - 49 4.11 MEASUREMENT FUNCTIONS When operating in the analog mode, you can use the cursors to measure amplitude and time data. When operating in the digital mode, the scope has an extensive set of fully automated amplitude and time measurement functions. You can select tw...

HOW TO USE THE INSTRUMENT 4 - 51 MEASURE MEAS 2-FREQ - Press the ’RETURN’ softkey to return to the ’MEASURE’ menu. - Turn on MEAS 2. MEAS 2 performs a frequency measurement on the same signal. The screen displays this result as : ’ch1 freq= ....kHz’. - Remove the Probe Adjust signal from channel 1 B...

HOW TO USE THE INSTRUMENT 4 - 53 MEASURE TOUCH, HOLD & MEASURE ™ The probes delivered with the oscilloscope offer a unique and innovative way to perform a number of functions directly from a push button mounted on the side of the probe. One of these functions is called ’TOUCH HOLD and MEASURE ™’...

4 - 54 HOW TO USE THE INSTRUMENT 4.12 PROCESSING FUNCTIONS Most oscilloscopes, including most Digital Storage Oscilloscopes, limit their capabilities to the display of amplitude (in volts), versus time. In addition to those traditional oscilloscope functions, this range offers capabilities to mathem...

HOW TO USE THE INSTRUMENT 4 - 55 MATHEMATICS FILTER - Press the ANALOG key to select the digital mode. - Press the MATH menu key. The MATH menu is displayed on the screen. Observe that MATH 1 is the default. - Press the softkey next to MATH 1 to enter the MATH 1 submenu. This menu is used to select ...

HOW TO USE THE INSTRUMENT 4 - 57 4.13 DISPLAY FUNCTIONS When operating in the analog mode, you can set the scope to display XY displays by selecting ’X DEFLECTION’ mode. In this mode the horizontal deflection is obtained from one of the input signals, while the analog timebase generator is turned of...

4 - 58 HOW TO USE THE INSTRUMENT The signal on channel 1 is a square wave. Consequently, there will be only two vertical levels to display.The signal on channel 2 is a sine wave, which is now displayed as a function of the square wave on channel 1. - Press the X SOURCE softkey so that ’line’ is inte...

HOW TO USE THE INSTRUMENT 4 - 59 DIGITAL DISPLAY X versus Y Similar to the analog mode, the digital mode allows you to display one trace as a function of another.The source for vertical direction (Y) is selected by the TRACK control. It can be the acquired trace or a saved track in a memory location...

4 - 60 HOW TO USE THE INSTRUMENT DIGITAL DISPLAY VERT MAGNIFY In the digital mode, the displayed signal can be expanded vertically after it has been captured. This allows you to look to signal details. Please note that the magnified representation of the signal has the same resolution as the origina...

HOW TO USE THE INSTRUMENT 4 - 61 DIGITAL DISPLAY INTERPOLATION Interpolation is a mathematical way to calculate displayed dots between actually captured signal samples. Interpolated displays help in the recognition of trace waveforms, even when the number of samples is too low to render an accurate ...

4 - 62 HOW TO USE THE INSTRUMENT DIGITAL DISPLAY WINDOWS - Connect the Probe Adjust signal to channels 1 and 2. - Press AUTOSET. The screen displays the two Probe Adjust signals in the center of the screen. - Press the TEXT OFF key, to turn off the bottom text. - Switch on the channels 3 and 4, when...

HOW TO USE THE INSTRUMENT 4 - 63 4.14 DELAYED TIMEBASE The Delayed Timebase (DEL’DTB) has two basic functions: • To magnify and display any detail of the signal displayed with the main timebase. • To permit more accurate timing measurements. STANDARD SETTING To start from a predefined state, you mus...

4 - 64 HOW TO USE THE INSTRUMENT DELAYED TIMEBASE DELAY Use the DELAY control to select the start of intensified part of the signal in the upper trace. The intensified part acts like a window over the Main Timebase trace. DELAYED TIMEBASE TIMEBASE - Press either key of the Del’dTB TIME/DIV keys. Whe...

HOW TO USE THE INSTRUMENT 4 - 65 DELAYED TIMEBASE TRACE SEP The traces displayed by the Main Timebase and Delayed Timebase can be separated with TRACE SEP.If the DELAYED TIMEBASE menu is activated, you will see the symbol next to the TRACE SEP text. The indicates that the TRACK control can be used t...

4 - 66 HOW TO USE THE INSTRUMENT The third softkey in the menu is labeled ’starts/trig’d’. ’Starts’ is highlighted as default. This is an indication that the Delayed Timebase starts immediately after the delay time has passed. For most signals, the ’starts’ mode can be used. - Press the softkey to s...

4 - 68 HOW TO USE THE INSTRUMENT 4.15 HARD COPY FACILITIES The oscilloscope offers the capabilities to make a hard copy of the screen information on a printer or a plotter. The hard copy can include the recorded waveform(s), the relevant scope settings, trace identification, cursors, measurement res...

HOW TO USE THE INSTRUMENT 4 - 69 UTILITY PRINT SETUP The oscilloscope must first be set to the correct interface parameters. Your instrument is always equipped with an RS 232 interface as standard. The following procedure describes how to set up the oscilloscope to use a printer through the RS 232 i...

HOW TO USE THE INSTRUMENT 4 - 71 4.16 AUTOSET AND SETUP UTILITIES This oscilloscope has a number of utilities that assist you to quickly get to the setup you need.One utility is the SET STANDARD utility to set the oscilloscope to a factory-defined, known state.The most frequently used utility will b...

4 - 72 HOW TO USE THE INSTRUMENT AUTOSET USER PROGRAMMABLE The AUTOSET function can also be programmed so that certain functions switch to a predefined position after an AUTOSET.USERPROG allows the user to customize the AUTOSET function for specific applications. Example: To program the AUTOSET func...

HOW TO USE THE INSTRUMENT 4 - 73 This setup can be saved in memory as follows: - Turn the TRACK control until memory location ’s7’ is selected. - Press the softkey ’save’. The actual setting of the front is now stored in memory location ’s7’. The indication in front of memory location number ’s7’ ch...

4 - 74 HOW TO USE THE INSTRUMENT SETUP TEXT LABEL In the setup menu each stored setups can be given a label of user defined text. This is done in the submenu TEXT of the SETUP menu. The cursor controls are used for editing text. The TRACK control is used as "cursor", The ∆ control is used fo...

HOW TO USE THE INSTRUMENT 4 - 75 OTHER FEATURES You are now an experienced user of this Fluke oscilloscope. The following features were not covered by this step-by-step introduction:- Trigger and ground level indicators - TV and HDTV trigger modes and line selection - Trigger filters - State pattern...

FUNCTION REFERENCE 5 - 1 5 FUNCTION REFERENCE This chapter contains an alphabetized description of each oscilloscope function. For easy reference, the functions are organized in the following order: 1. The Function description Explanation and detailed information about the function. 2. Key sequence ...

5 - 2 FUNCTION REFERENCE ACQUISITION LENGTH Description: The oscilloscope allows the user to select the acquisition length, or record length that best suits the needs of the application. The default acquisition length is 512 data points for each trace. It is possible to increase the length of a trac...

FUNCTION REFERENCE 5 - 3 MEMORY EXPANSION With the Extended Memory Option installed, the acquisition memory can be made as long as 32K. When shorter acquisitions are selected, more traces can be stored in memory with a maximum of 208 (156) traces. * ) memory plus acquisition; 2 ch. models between br...

5 - 4 FUNCTION REFERENCE ADD INVERT SUBTRACT Description: The CH1 + CH2 (CH3 + CH4) key in the control section for CH1 (CH3) can be used to display additional traces of the sums of these channels. CH3 + CH4 is only present in the 4 channels models. The invert key (INV) in the control section for CH2...

FUNCTION REFERENCE 5 - 5 ADD (MATHEMATICS) Description: The ADD function performs a point-to-point addition of two traces, related to the two ground levels (indicated as ‘-’). The result of the ADD function is a new trace in a different register. This trace can be scaled and positioned. Scaling is t...

FUNCTION REFERENCE 5 - 7 ALT/CHOP Description: In the analog mode, when two or more channels are selected, the oscilloscope displays multiple channels in a ‘time shared’ mode. This implies that a fast electronic switch connects each input signal to the output amplifier in turn. This can be done at t...

5 - 8 FUNCTION REFERENCE The alternate and chopped modes are shown in the figures below. Key sequence: Toggle softkey to select ALTernate or CHOPped mode. ANALOG MODE Description: You can use the yellow ANALOG key to switch from the analog mode to the digital mode and back at any time. The signal ac...

FUNCTION REFERENCE 5 - 9 If switching from one mode to another results in an unsatisfactory display, press the yellow key a second time to return to the original situation. Key sequence: Toggle key to switch between analog mode and digital mode. AUTO RANGE Description: The AUTO RANGE function automa...

FUNCTION REFERENCE 5 - 11 AUTOSET SEQUENCE Description: If front panel settings are stored in memory locations ‘s1 to s5’ and ‘s6’ is cleared, then the range of ‘s1 to s5’ becomes a sequence of front panel settings. Such a sequence can be used as (part of) a step-by-step testing procedure. The two f...

5 - 12 FUNCTION REFERENCE AUTOSET USERPROG Description: A number of instrument settings after AUTOSET can be customized to your special needs when the standard default settings do not fit on your application. The selections are reached via the key sequence ’UTILITY >> AUTOSET >> userprog...

FUNCTION REFERENCE 5 - 13 Key sequence: Remote commands: CPL: AS (Command for an Auto Setup) Refer to Chapter 6 for full details. Toggle softkey to activate userprog Toggle softkey to preset channels on/off and input attenuator after AUTOSET. Toggle softkey to preset input coupling after AUTOSET Tog...

5 - 14 FUNCTION REFERENCE AVERAGE Description: Valid in digital mode only. Averaging is a process to reduce random noise without losing bandwidth. Averaging can only be used for repetitive signals. Every sample point is calculated after every subsequent acquisition as follows: In this formula "p...

FUNCTION REFERENCE 5 - 15 BANDWIDTH LIMITER Description: The bandwidth limiter cuts the bandwidth of all vertical channels to 20 MHz and makes noisy input signals look smoother. The bandwidth limiter does not affect triggering. The following figure shows the effect of the bandwidth limiter. Key sequ...

5 - 16 FUNCTION REFERENCE CALIBRATION AUTOCAL Description: The CAL key is used to make a fine adjustment of the oscilloscope’s input, trigger, and timebase circuitry to achieve high accuracy even under extreme environmental conditions such as very high or very low temperatures. In a workshop or labo...

FUNCTION REFERENCE 5 - 17 CHANNEL/TRACE SELECTION Description: In this family of instruments, the distinction is made between ‘channel’ and ‘trace’. A channel is referred to as an input channel, complete with AMPL and POS settings. A trace represents a waveform which has been stored in one of the re...

5 - 18 FUNCTION REFERENCE Key sequence: CONFIDENCE CHECK Description: After turning the oscilloscope on, a confidence check starts automatically. The following is tested in sequence:- The instrument’s internal control bus. - The communication between front panel and internal microprocessor. - The se...

FUNCTION REFERENCE 5 - 19 CURSORS Description: Cursors are on-screen measuring lines. They can be moved using the TRACK and ∆ controls. Cursors can be positioned on signal details of interest and can be used for accurate measurements. Basically there are two types of cursors: vertical lines (||) cal...

FUNCTION REFERENCE 5 - 21 CURSORS BOTH In this mode, both voltage and time cursors are active. The TRACK and ∆ controls operate as in VOLT or TIME mode, as selected with the CONTROL key. Key sequence: Control to shift both cursors simultaneously, or to shift the track cursor only. Selection in the C...

FUNCTION REFERENCE 5 - 23 CURSORS READOUT VOLT Three readouts can be selected:- ∆ V: Gives the voltage difference between the cursors. - V1 V2: Gives the absolute voltage with respect to ground for each cursor. V1 and V2 have to be selected separately. - ∆ V-ratio: The readout is a percentage that c...

5 - 24 FUNCTION REFERENCE DELAY Description: Delay is the term that is used to define the time difference between the trigger point of an acquisition and the starting point of the resulting trace. In an analog oscilloscope, the trigger point is at the beginning of a trace, and the delay is said to b...

FUNCTION REFERENCE 5 - 25 Every time the signal crosses this level the event counter is incremented by one. When the event counter reaches the selected delay value, the scope triggers and a new signal acquisition is started. The number of events to be counted before the acquisition starts is selecte...

5 - 26 FUNCTION REFERENCE DELAY MEASUREMENT Description: In the digital mode, the MEASURE menu provides a ‘delay’ measurement. This is an automatic measurement of the time between two 50% levels ("mesials") of the first leading or trailing edge of two signals. The menu is reached with the ke...

FUNCTION REFERENCE 5 - 27 Key sequence: Remote commands: CPL: QM (Command to query a measurement) Refer to Chapter 6 for full details. DELAYED TIMEBASE (DEL’D TB) Description: The Delayed Timebase (DEL’D TB) is used to examine a signal detail of interest. The detail to be examined is indicated as an...

5 - 28 FUNCTION REFERENCE In the DELAYED TIMEBASE menu, which is selected with the DTB key, the delayed timebase can be switched on. This is done with the first softkey called ‘DEL’D TB on/off’. Once activated, the delayed timebase trace is displayed. The main timebase trace can be switched off usin...

FUNCTION REFERENCE 5 - 29 DIGITAL MODE Description: The yellow ANALOG key is used to switch from the analog mode to the digital mode and back at any time. The signal acquisition and display functions of both operating modes are very similar. However, the nature of the signal used or the choice of th...

5 - 30 FUNCTION REFERENCE DISPLAY MENU Description: The DISPLAY menu offers a set of powerful display functions for the analog mode and the digital mode.In the analog mode, the scope can be set to the X DEFLECTION mode. In this mode XY displays can be generated from a combination of any of the input...

FUNCTION REFERENCE 5 - 31 Horizontal source selection is made with softkeys. X and Y sources must always be traces from the same register memory. This is done to avoid errors because the traces have to be sampled simultaneously to give a useful and correct X vs Y display. The TEXT submenu allows you...

5 - 32 FUNCTION REFERENCE DISPLAY dots linear sine ST6755 9303 DISPLAY X vs Y TRACK on off X SOURCE ST6785 9303 DISPLAY TEXT TRIG IND on off USERTEXT ST6786 9303 GND IND on off Toggle softkey to display trigger level indication. Toggle softkey to display or blank ground level indicators. Access to e...

FUNCTION REFERENCE 5 - 33 ENVELOPE Description: If a waveform is changing over time (because of drift, jitter, or intermittent faults), the ‘history’ of the changing waveform can be collected using the envelope mode. In the envelope mode the minimum and maximum signal values are stored, taking the v...

5 - 34 FUNCTION REFERENCE EXTERNAL TRIGGER (2 CHANNELS MODELS ONLY) Description: The External Trigger input provides an extra input that can be used as the trigger source for the Main Time Base (MTB).The External Trigger input chargacteristics are simular to those of the input channels 1 and 2. The ...

FUNCTION REFERENCE 5 - 35 FILTER Description: The FILTER function is a waveform MATH function. It is a post- acquisition algorithm which can be used to simulate the effect of a low-pass filter process on a trace. The cut-off frequency of the low-pass filter can be adjusted and the result trace is st...

5 - 36 FUNCTION REFERENCE Key sequence: Remote commands: CPL: QW (Command to query a waveform) Refer to Chapter 6 for full details. GLITCH TRIGGER Glitch triggering examines a single channel, on one or more time conditions. Any one of the channel inputs can be used as trigger source and is selected ...

FUNCTION REFERENCE 5 - 37 Key sequence: HOLD OFF Description: The HOLD OFF control determines the hold off time.In the analog mode, the hold off time is an additional ‘dead’ time after each timebase sweep during which the MAIN TB trigger is inhibited. Variable HOLD OFF enables the user to synchroniz...

FUNCTION REFERENCE 5 - 39 INPUT ATTENUATOR MANUAL + AUTOMATIC Description: The oscilloscope’s input has a wide range of sensitivities. This enables signals of different amplitudes to be displayed on the available screen area. Sensitivity adjustment is done with key pair AMPL/VAR or a single AMPL tog...

5 - 40 FUNCTION REFERENCE Toggle key to switch the AUTO RANGE function on/off Toggle key to switch between two vertical input sensitivities of the External Trigger input channel. INPUT COUPLING Description: The characteristics of the oscilloscope’s inputs can be selected for each channel. A channel ...

5 - 42 FUNCTION REFERENCE LOGIC TRIGGER (4 CHANNELS MODELS ONLY) Description: Logic triggering enables triggering on a combination of the four input signals. Each input is compared with a trigger level and is recognized as being either HIGHer or LOWer than the trigger level. The four input signals t...

5 - 44 FUNCTION REFERENCE MAGNIFY HORIZONTAL Description: In the analog mode, the MAGNIFY key pair switches between the normal trace and horizontal expansion of the trace by a factor of 10. The maximum timebase speed is then increased from 20 ns/div to 2 ns/div. In the digital mode, the same MAGNIFY...

FUNCTION REFERENCE 5 - 45 Key sequence: Key pair to adjust the horizontal magnification.Analog mode: Right side switches x10 MAGNIFY on.Left side switched x10 MAGNIFY off. Digital mode: Right side increases the MAGNIFY factor.Left side decreases the MAGNIFY factor. MAGNIFY VERTICAL Description: In t...

5 - 46 FUNCTION REFERENCE MAIN TIMEBASE MANUAL + AUTOMATIC Description: The Main Timebase (MAIN TB) has a wide range of time/div settings. This enables the display of signals of various frequencies to be displayed with optimum resolution. The time scale is adjusted with the key pair TIME/DIV (VAR). ...

FUNCTION REFERENCE 5 - 47 MATHEMATICS Description: Two mathematical functions (MATH 1 and MATH 2) are independent waveform processes. These can be used separately, or be chained together if required. Each offers a choice of four mathematical functions (add, subtract, multiply, filter). The result of...

FUNCTION REFERENCE 5 - 51 PEAK DETECTION Description: This function is available only in the digital mode. In the acquisition system of a Digital Storage Oscilloscope, the sample distance is determined by the time base speed. At higher time base speeds, the distance between the samples is short; at ...

5 - 52 FUNCTION REFERENCE See the function ACQUISITION LENGTH for additional information Key sequence: Toggle key to switch the peak detection on/off. POSITION Description: Position controls allow the signals to be shifted across the screen to align signals with the measuring graticule to make time ...

FUNCTION REFERENCE 5 - 53 POWER SUPPLY Description: The instrument can be used at any nominal line voltage between 100 Vac and 240 Vac, with no switching and no fuse changes. After the instrument is turned on by pressing the POWER ON/OFF switch, an automatic power-up test is started. For detailed in...

FUNCTION REFERENCE 5 - 57 PROBE UTILITIES Description: The ’PROBE SWITCH’ setting of the ’UTILITY >> PROBE’ menu determines the instrument’s reaction when you press the command button on the probe. You can select between the start of AUTOSET, performing a TOUCH, HOLD & MEASURE™, selecting ...

5 - 58 FUNCTION REFERENCE REMOTE CONTROL IEEE 488.2 Description: An IEEE 488.2 Interface is available as an option. This interface can be used to control oscilloscope functions by an external computer. All of the oscilloscope’s current settings can be read by the computer. The programming language i...

FUNCTION REFERENCE 5 - 59 REMOTE CONTROL RS-232 Description: The oscilloscope is equipped with an RS-232 Interface as standard. This can be used for remote control or for setting the readout using an external controller or PC. The language used is called CPL (Compact Programming Language) and is des...

5 - 60 FUNCTION REFERENCE Key sequence: Key to switch from remote to local. Remote commands: CPL: PC (Command to program communication parameters)GL (Has same result as operation of STATUS LOCAL key)LL (Inhibits front key STATUS LOCAL) Refer to Chapter 6 for full details. UTILITY TRACK RS232SETUP RS...

5 - 62 FUNCTION REFERENCE SCREEN CONTROLS AND GRATICULE Description: The screen controls are located to the left of the CRT viewing area. Brightness of trace(s) and text can be adjusted separately with the TRACE INTENSITY and TEXT INTENSITY controls. Intensity of the trace(s) can also be determined ...

FUNCTION REFERENCE 5 - 63 Key sequence: Control for trace intensity. Control for text intensity. Srewdriver operated control to align the trace with the graticule Control for focusing of trace, text and cursors. Control for illumination intensity of measuring graticule SCREEN MESSAGES Description: U...

FUNCTION REFERENCE 5 - 67 save: The actual set of settings is saved in the selected memory location. recall: The settings saved in the selected memory location become the actual settings. undo: The settings previous to the last recall action become active again. CLEAR & PROTECT: in the CLEAR &am...

5 - 68 FUNCTION REFERENCE SETUPS SEQUENCE Description: If front panel settings are stored in memory locations ‘s1 to s5’ and ‘s6’ is cleared, then the range of ‘s1 to s5’ is referred to as a sequence. Such a sequence can be used as (part of) a step-by-step testing procedure. There are two possible w...

FUNCTION REFERENCE 5 - 69 STANDARD SETUP / FRONT PANEL RESET Description: A factory-programmed set of default settings is available to put the instrument in a defined state. The default settings (std) are reached in the menu under the SETUPS menu key. Another method to perform a front panel reset is...

5 - 70 FUNCTION REFERENCE STATUS SCREEN Description: Normally a maximum of four lines of setting information are given in the lower screen area. More extensive setting information can also be displayed. The STATUS toggle key switches between normal and extensive settings information. The status scre...

5 - 72 FUNCTION REFERENCE Key sequence: Remote commands: CPL: QW (Command to query a waveform) Refer to Chapter 6 for full details. TEXT OFF Description: Toggle key to select information in the CRT viewing area. This way, more space is available on screen for trace display. There are three steps in ...

FUNCTION REFERENCE 5 - 73 Key sequence: Toggle key to cycle through three states of information given in CRT viewing area. TIMEBASE MODES Description: The Main Timebase (MAIN TB) can function in three different modes : AUTO, TRIG, or SINGLE. The choice is mainly determined by the frequency of the tr...

5 - 74 FUNCTION REFERENCE MULTI Part of MATH+ option. Refer also to MATH+ Users Manual. The MULTIple shot mode enables a number of single shot acquisitions to be made in rapid succession. It is basically the same as SINGLE but with automatic rearming following each acquisition. Each acquired wavefor...

FUNCTION REFERENCE 5 - 75 TIME MEASUREMENTS Description: Time measurements can be made using the cursors or using automated, calculated measurement routines. Cursors operate in the analog mode as well as in the digital mode.Calculated time measurements are available in the digital mode only.Using th...

FUNCTION REFERENCE 5 - 77 Results of the measurements MEAS1 and MEAS2 are displayed in the top left corner of the screen. When you press the key sequence MEASURE >> CURSOR LIMIT & STATIST >> STATIST on, the screen displays three values per MEAS function. These values are measured ove...

5 - 78 FUNCTION REFERENCE TOUCH, HOLD & MEASURE ™ MODE Description: The TOUCH, HOLD & MEASURE. ™ mode is a quick way to freeze the trace and to display four main measurements instantly. This is done by pressing the COMMAND switch on the measuring probe of the required channel. The four measu...

FUNCTION REFERENCE 5 - 79 TRIGGER COUPLING Description: Trigger coupling is used to optimize the trigger stability for different signal types. The filter modes ac and dc are identical to those of the vertical inputs. Refer to function INPUT COUPLING. Lf-reject cuts off lower frequencies; triggering ...

5 - 80 FUNCTION REFERENCE Key Sequence: DTB ac dclf-rejhf-rej ST6773 9303 TRIGGER noiseon off ac dclf-rejhf-rej ST6772 9303 Toggle softkey to select MAIN TB trigger coupling modes ac, dc, lf-reject, and hf-reject. Toggle softkey to switch ’noise’ mode for MAIN TB/DEL’D TB. Toggle softkey to select D...

FUNCTION REFERENCE 5 - 81 TRIGGER DEL’D TB Description: The Delayed Timebase has two operating modes: starts and triggered. In both modes the main timebase must be triggered first, and the delay time must have expired. The Del’d Time Base modes are selected in the DELAYED TIMEBASE menu after switchi...

5 - 82 FUNCTION REFERENCE Source and slope are selected with the same TRIG 1, TRIG .., and EXT TRIG keys that are used for the main timebase trigger source and slope selection. The delayed timebase source and slope have their own readout. This readout can be found at the bottom right corner of the s...

FUNCTION REFERENCE 5 - 83 Leveling in DEL’D TB is adjusted with the ∆ control. It is activated in the triggered DEL’D TB mode. The range is from -8 ... +8 divisions. Trigger levels for MAIN TB and DEL’D TB can be displayed. Refer to the description of the UTILITY SCREEN & SOUND function. TRIGGER...

5 - 84 FUNCTION REFERENCE TRIGGER MAIN TB Description: This section deals only with ‘edge’ triggering of the MAIN TB. For TV triggering, Logic triggering or DEL’D TB triggering, refer to the appropriate sections. In the analog mode triggering determines the start point of the MAIN TB sweep. The swee...

5 - 86 FUNCTION REFERENCE TV TRIGGER Description: In addition to edge and glitch triggering (explained under TRIGGER MAIN TB), there are extensive video triggering possibilities. These enable stable triggering on video frames and lines from various TV standards. There is no need to adjust the trigge...

FUNCTION REFERENCE 5 - 87 Key sequence: Toggle softkey to switch between edge and tv triggering. In digital mode also glitch triggering. Toggle softkey to switch between TV triggering on field 1, field 2, or line sync pulses. Control to select the line number. Toggle softkey to select between pos(it...

5 - 88 FUNCTION REFERENCE USERTEXT Description: Two lines of user-definable text can be displayed in the CRT viewing area. The text may be useful as additional information when taking photographs. The selections are reached via the key sequence ’UTILITY >> SCREEN & SOUND >> USERTEXT ...

FUNCTION REFERENCE 5 - 89 UTILITY MAINTENANCE Description: The UTILITY MAINTENANCE menu is used to calibrate the oscilloscope and for repair and testing. Calibration data is protected by a password and by operation of a pinhole switch that can be sealed. Calibration is of vital importance for the in...

5 - 90 FUNCTION REFERENCE UTIL MENU Description: The UTIL menu is used to make presettings for instrument settings that do not need to be changed frequently:- The operation of the AUTOSET key. For a description, refer to the AUTOSET and AUTOSET USERPROG functions. - Selections in relation to probes....

FUNCTION REFERENCE 5 - 91 UTILITY SCREEN & SOUND Description: The UTILITY SCREEN & SOUND menu is used to select on-screen text, trigger and ground level indicators, and user text. Settings for acoustic feedback (beep and click) are set in this menu. The menu can be reached with the key seque...

5 - 92 FUNCTION REFERENCE VOLT MEASUREMENTS Description: Voltage measurements can be made using the cursors or using automated, calculated measurement routines. Cursors operate in the analog mode as well as in the digital mode.Calculated volt measurements are available in the digital mode only.Using...

FUNCTION REFERENCE 5 - 95 Key sequence: Remote commands: CPL: QM (Command to query a measurement) Refer to Chapter 6 for full details. MEASURE MEAS1(2) TRACK volt time delay ST6780 9312 on off ∆ CURSORLIMIT&STATIST CURSOR LIMITED yes no STATIST on off Toggle softkey to select time measurements i...

FUNCTION REFERENCE 5 - 97 Key sequence: Toggle softkey to switch X- Deflection on. Softkey pair to select X-DEFL source. Selection is possible only with X- DEFLection on. Toggle softkey to switch X vs Y on. Control to select the register as source for vertical deflection. Selection is possible only ...

THE CPL PROTOCOL 6 - 1 6 THE CPL PROTOCOL 6.1 INTRODUCTION The oscilloscope can be controlled via the RS-232 serial interface using the Compact Programming Language (CPL) protocol. In this protocol a small but very powerful set of commands is defined. The main characteristics of the CPL protocol: It...

THE CPL PROTOCOL 6 - 3 6.2 EXAMPLE PROGRAM FRAME In the COMMAND REFERENCE SECTION a very short programming example is given for each command. All examples are written in GW-Basic and able to run on an IBM-compatible PC. The example program expects the oscilloscope to be connected via COM1 port (RS-2...

6 - 4 THE CPL PROTOCOL 6.3 COMMANDS IN FUNCTIONAL ORDER group name command Communication Program Communication PC Setup Auto Setup AS Default Setup DS Program Setup PS Program text PT Query Setup QS Query text QT Recall Setup RS Save Setup SS Calibrate CL States Go to Local GL Go to Remote GR Local ...

THE CPL PROTOCOL 6 - 5 6.4 COMMANDS IN ALPHABETICAL ORDER command name AS Auto Setup AT Arm Trigger CL Calibrate DS Default Setup GL Go to Local GR Go to Remote ID IDentification LL Local Lockout PC Program Communication PS Program Setup PT Program text PW Program Wavefrom QS Query Setup QM Query me...

6 - 6 THE CPL PROTOCOL 6.5 COMMAND REFERENCE In this section all commands of the CPL protocol available in the oscilloscope are described in alphabetical order. All command descriptions have the same layout: NAME NM Purpose: Explains the command, its parameters and limitations. Command: Shows the sy...

THE CPL PROTOCOL 6 - 7 AUTOSET AS Purpose: To start the AUTOSET function. With this command the oscilloscope will select the optimum settings (volts, time base, trigger mode, etc.) for the connected signal(s). The AutoSet (AS) command performs the same function as pressing the front panel AUTOSET bu...

6 - 8 THE CPL PROTOCOL ARM TRIGGER AT Purpose: Will reset the timebase and rearm the triggering for a new timebase trigger. Issuing this command during a time base sweep will immediately stop the sweep, reset the timebase and rearm the triggering. The Arm Trigger (AT) command performs the same funct...

THE CPL PROTOCOL 6 - 9 CALIBRATE CL Purpose: To start the internal Auto-Calibration procedure. This procedure optimizes the input, trigger and time base circuitry of the oscilloscope. This calibration takes approximately one minute and completion is signalled by the acknowledge. The Calibrate (CL) c...

6 - 12 THE CPL PROTOCOL GO to REMOTE GR Purpose: Puts the oscilloscope in the Remote State. In the Remote State none of the oscilloscope functions are accessible via the front panel buttons and knobs. Going back to the Local State is achieved by sending the Go to Local (GL) command or by pressing th...

THE CPL PROTOCOL 6 - 13 IDENTIFICATION ID Purpose: Returns the identification of the oscilloscope. It gives information about the model number, the version numbers of all software modules and the installed options. This Identification (ID) command gives the same information as can be read from the o...

6 - 16 THE CPL PROTOCOL PROGRAM COMMUNICATION PC Purpose: To program baudrate, parity mode, number of data and stopbits and the handshake method for computer communication. After the command is sent, an <acknowledge> will be returned with the old communication parameters still active.If the &l...

6 - 18 THE CPL PROTOCOL PROGRAM SETUP PS Purpose: To configure the oscilloscope using compact setup strings.This Program Setup (PS) command and the Query Setup (QS) command can be used together to restore and retrieve a complete setup or partial of the oscilloscope. The format of the programming str...

THE CPL PROTOCOL 6 - 19 PROGRAM TEXT PT Purpose: To program text to an oscilloscope. If the S parameter is specified, setup text is programmed. The text will be set into one of the setup registers of the oscilloscope. The parameter n specifies the setup register. A maximum number of 22 characters is...

6 - 20 THE CPL PROTOCOL "S" setup text will be specified for register n; if "S" and n are left out, user text is specified n one of the setup registers, ranging from 0 to 10;n=0 selects the current setup char a character byte; range = 0 to 12, 14 to 255(refer to character code table ...

THE CPL PROTOCOL 6 - 23 wave_nr The oscilloscope waveform destination:011 - 084 for m1.1 - m8.4 01e - 08e for m1.e - m8.e 091 - 504 for m9.1 - m50.4 (Extended Memory only)09e - 50e for m9.e - m50.e (Extended Memory only)(xx.e for 2 ch. models only; xx.3 and xx.4 for 4 ch. models only) admin 16 param...

6 - 24 THE CPL PROTOCOL sample 2 bytes (Most Significant Byte + Least Significant Byte), representing the 16 bit sample value (bit 16 = -32768, bit 15 = 16384, ..., bit 1 = 1).Range: -32k (down) to +32k (up) checksum 1 byte checksum of all sample bytes (add one by one; result modulus 256) Example: I...

6 - 26 THE CPL PROTOCOL QUERY MEASUREMENT QM Purpose: To obtain measurement data from an oscilloscope. If the V (Value) parameter is specified, one measured value will be returned. If the L (Logging) parameter is specified, an infinite number of measured values will be returned. Cancelling is possib...

THE CPL PROTOCOL 6 - 27 Response 1: Response 2: n meas_type 1) suffix_unit 1) Note: 1 variable variable measurement 1 2 variable variable measurement 2 10 dV V delta Voltage between cursors 11 V1 V Volt cursor 1 12 V2 V Volt cursor 2 13 Vdc V Volt dc 20 dT s delta Time between cursors 2) 21 F Hz Fre...

THE CPL PROTOCOL 6 - 29 QUERY PRINT QP Purpose: To obtain the graphical data of the display from the oscilloscope. The Query Print (QP) command can be used to retrieve a complete display picture, which can be stored as a HPGL file in the PC. This file can then be used in for example FLUKEVIEW, Word ...

THE CPL PROTOCOL 6 - 31 QUERY SETUP QS Purpose: To query the oscilloscope for its current setup. This Query Setup (QS) command and the Program Setup (PS) command can be used together in order to retrieve and restore a complete or partical setup of the oscilloscope. Optionally a parameter can be adde...

6 - 34 THE CPL PROTOCOL Example: (of user text) Read the user text from the screen of an oscilloscope: 90 DIM USERTXT$ (64) 100 PRINT #1,"QT" :’Query user Text command 110 GOSUB 1000 :’Sync on acknowledge 120 LINE INPUT #1,USERTXT$ :’Read text characters 130 PRINT USERTXT$ :’Print user text ...

6 - 38 THE CPL PROTOCOL Interpretation of waveform data As a response to the QW command the oscilloscope sends a set of data describing the waveform. The following example shows the interpretation of that data. The example assumes the Probe Adjust signal to be applied to input channel 1. For informa...

THE CPL PROTOCOL 6 - 41 RESET INSTRUMENT RI Purpose: Resets all of the software of the oscilloscope, including the CPL protocol handler and all of the input and output buffers.Oscilloscope settings remain the same. Interface parameters are not changed in order to keep the communication alive. When t...

THE CPL PROTOCOL 6 - 43 SAVE SETUP SS Purpose: To save the current oscilloscope setup in one of 10 internal setup registers. This setup can be recalled manually or by sending the Recall Setup (RS) command. The command performs the same as the frontpanel key SETUPS together with the softkey SAVE. An ...

6 - 46 THE CPL PROTOCOL TRIGGER ACQUISITION TA Purpose: To perform a software trigger. This command causes an acquisition or sweep to be started. It is the software equivalent of a normal trigger pulse. In the single shot mode the AT (Arm Trigger) command is sent to arm the triggering first. Command...

THE CPL PROTOCOL 6 - 47 6.6 ACKNOWLEDGE The <acknowledge> is a synchronization reply that is returned after each command sent to the oscilloscope, signalling correct or incorrect operation: "0" Ok, normal situation "1" Syntax error (ST query may give more info) "2" Exec...

6 - 50 THE CPL PROTOCOL 6.8 SETUP The Query Setup (QS) and Program Setup (PS) commands can be used together in order to retrieve and restore a complete or partical setup of the oscilloscope. When a setup is requested from the oscilloscope, it will send its setup as a sequence of strings. Each separa...

ACQUIRE MENU STRUCTURE A - 1 Appendix AACQUIRE menu structure ACQUIRE ACQUIRE AVERAGE 256 PEAK DET on off ENVELOPE on off TRACK ST6565 9312 T DIGITAL MODE:

B - 1 CURSORS menu structure Appendix BCURSORS menu structure ## CURSORSREADOUT CURSORSREADOUT CURSORSREADOUT CONTROL RETURN RETURN RETURN CURSORS on off -ch2ch3ch4 READOUT CURSORS on off READOUT CURSORS -ch2ch3ch4 # # CURSORS on off -ch2ch3ch4 READOUT CONTROL # CURSORS on off -ch2ch3ch4 READOUT CON...

DISPLAY MENU STRUCTURE C - 1 Appendix CDISPLAY menu structured X vs Y TEXT EDITUSERTEXT DISPLAY X-DEFL on off RETURN RETURN RETURN ENTER DISPLAY DISPLAY ST6560 9303 ANALOG MODE: X-DEFL TEXT X-SOURCE ch1ch2ch3ch4line DISPLAY X vs Y TEXT ANALOG DIGITAL MODE: WINDOWS on offVERTMAGNIFYoff dotslineairsin...

D - 1 MATHEMATICS MENU STRUCTURE Appendix DMATHEMATICS menu structure RETURN MATH MATH MATH MATH 2m2= filteracq MATH n MATHSCALE MATHFILTERPARAM TRACK MATH 1m1= on off SCALE DISPLAYSOURCE yes no MATH 2 on off PARAM DISPLAYSOURCE yes no MATH 1 addsubmulfilter ch1 ch2 ENTER 1 DIV= 21.3mU TRACK OFFSET ...

MEASURE MENU STRUCTURE E - 1 Appendix EMEASURE menu structure

SAVE/RECALL MENU STRUCTURE G - 1 Appendix GSAVE/RECALL menu structure

H - 1 SETUPS MENU STRUCTURE Appendix HSETUPS menu structure SETUPS FRONTSETUPS stds1s2 recall undo save CLEAR&PROTECT TRACK CLEAR&PROTECTSETUPS stds1s2 TRACK PROTECTon off clear clearall RETURN CLEARSETUPSCONFIRM yes ARE YOUSURE ? no CLEARSETUPSCONFIRM yes OVERRULEPROTECT? no SETUPTEXTEDIT i...

TB MODE MENU STRUCTURE J - 1 Appendix JTB MODE menu structure TB MODE EVENTDELAY ACQLENGTHCONFIRM TB MODE RETURN RETURN TB MODE RETURN TB MODE ST6563 9303 TB MODE ANALOG DIGITAL : TRACK ∆ on off autotrigsingle alt chop ANALOG: autotrigsinglemulti ROLL on off REALTIME ONLY yes no EVENTDELAY ACQLENGTH...

K - 1 TRIGGER menu structure Appendix KTRIGGER menu structure TRIGGER TRIGGER ANALOG DIGITAL MODE: ANALOG MODE: TRIGGERM A I N T B edge tv ch3line level-pp on off noise on off ac dclf-rejhf-rej TRIGGERM A I N T B edge tv field 1field 2lines pos neg VIDEOSYSTEMhdtv TRIGGERM A I N T B edge tv field 1f...

L - 1 UTILITY menu structure Appendix LUTILITY menu structure

N - 2 RS-232 CABLE CONFIGURATIONS B. Cable to printer/plotter with hardware handshake parameters: "3-wire/7-wire" = 7-wire"XON-XOFF on off" = on or off C. Cable to controller with hardware handshake parameters: "3-wire/7-wire" = 7-wire"XON-XOFF on off" = on or off The...

APPENDIX P P - 1 Appendix P CHANNELS SIMULTANEOUSLY SAMPLED AT 100 MS/s The scope has two 8-bit flash analog-to-digital converters (ADCs), each with a maximum sample rate of 100 MS/s. This allows two channels to be captured simultaneously in single shot mode, with sample rates of up to 100 MS/s for ...

P - 2 APPENDIX P CHANNEL ACQUISITIONS For three- or four-channel acquisition, the ADCs are used in conjunction with the chopped mode or alternate mode. In the chopped mode the first ADC takes a single sample on channel 1, then one on channel 3, then one on channel 1 again and so on. The second ADC c...

APPENDIX P P - 3 EXPANSION AND INTERPOLATION Sometimes there is a need to look at a single shot or low repetition rate signal at high timebase speed. This can be done by selecting the ‘real time sampling only’ mode in the Main Time Base menu. In this mode the scope never switches to random sampling....