Fluke 2620A - Manuals

2620A/2625A Users Manual iv Isolated and Shielded Sensor Configuration ............................................ 5-11 In More Detail ............................................................................................... 5-12 6 Maintenance ....................................................

v List of Tables Table Title Page 1-1. Hydra Features ....................................................................................................... 1-4 1-2. Accessories ............................................................................................................ 1-5 2-1. Dis...

vii List of Figures Figure Title Page 2-1. Adjusting Handle ................................................................................................... 2-3 2-2. Front Panel ............................................................................................................. 2-5 2-3. ...

viii Caution THIS IS AN IEC SAFETY CLASS 1 PRODUCT. BEFORE USING, THE GROUND WIRE IN THELINE CORD OR THE REAR PANEL BINDING POST MUST BE CONNECTED FOR SAFETY. Interference Information This equipment generates and uses radio frequency energy and if not installed and used in strictaccordance with the ...

ix Safety Terms in this Manual This instrument has been designed and tested in accordance with IEC publication 1010,Safety Requirements for Electrical Measuring, control and Laboratory Equipment. ThisUsers Manual contains information, warnings, and cautions that must be followed toensure safe operat...

2620A/2625A Users Manual x AC Power Source The instrument is intended to operate from an ac power source that will not apply morethan 264V ac rms between the supply conductors or between either supply conductor andground. A protective ground connection by way of the grounding conductor in the powerc...

xi Getting Started Introduction This section will have you operating Hydra in a matter of minutes. All basic operatinginformation is covered in this short Getting Started guide. Subsequent chapters of themanual cover the instrument in more detail. Note This manual contains information and warnings t...

2620A/2625A Users Manual xii this example, "OFF" is lit if you’re working with channel 0, and have alreadyperformed the Configuration Reset). 3. Press G , D to cycle through the choices for measurement function. For now, select "V AC", to set up the channel for AC voltage measurement...

Getting Started (continued) xiii select the mode (“Mode” in right display) from “All” to output all scan data, “ALAr” tooutput only alarm data, or “trAnS” to output data scanned only when the Hydra goes intoor out of alarm. Once the destination and mode have been set, enable Memory Storage by pressi...

2620A/2625A Users Manual xiv Note You cannot activate the Monitor function if the selected channel is set upas OFF; the instrument gives a long beep and ignores your request. The "MON" annunciator comes on, and the instrument starts taking measurements on theselected channel. If you haven’t ...

Getting Started (continued) xv 20.......0 LAST MIN MAX LAST MIN MAX oo24f.eps Press N or C to remove the Review data from the display when you’re through. The remainder of this manual covers all aspects of using Hydra. Glance over the Tableof Contents; you’ll find that each section presents an addit...

1-1 Chapter 1 Introduction Title Page The Hydra Series II Data Acquisition Unit ....................................................... 1-3The Hydra Series II Data Logger ...................................................................... 1-3Options and Accessories ..................................

Introduction The Hydra Series II Data Acquisition Unit 1 1-3 Note This manual contains information and warnings that must be followed toensure safe operation and retain the instrument in safe condition. The Hydra Series II Data Acquisition Unit The Hydra Series II Data Acquisition Unit (Model 2620A)...

Introduction Where to go From Here 1 1-5 Accessories Accessories available for the instrument are described in Table 1-2. Table 1-2. Accessories Model Description 80I-410 80i-1010 Clamp-On DC/AC Current Probes. 80J-10 Current Shunt. 2620A-05K Field-installable IEEE-488 Option kit (Hydra Data Acquisi...

2620A, 2625A Users Manual 1-6 Getting Started Provides a quick introduction to instrument setup and operation. Chapter 1 Introduction Describes standard features, options, and accessories for the Fluke Hydra Series II DataAcquisition Unit and Hydra Series II Data Logger. Also, this chapter discusses...

2-1 Chapter 2 Overview Title Page Introduction ....................................................................................................... 2-3 Setting Up the Instrument.................................................................................. 2-3 Unpacking and Inspecting the Inst...

Overview Introduction 2 2-3 Introduction Chapter 2 provides an overview of the major features of the instrument. Comprehensivedetails on all instrument features are found in Chapter 3 (for front panel operation) andChapter 4 (for computer interface operation.) Setting Up the Instrument Unpacking and...

2620A, 2625A Users Manual 2-4 Line Power Warning To avoid shock hazard, connect the instrument power cord to apower receptacle with earth ground. Plug the line cord into the connector on the rear of the instrument. The instrumentoperates on any line voltage between 90 and 264V ac without adjustment,...

Overview Operating Modes 2 2-9 Input Channels The instrument provides one input (channel 0) on the front panel and 20 inputs (channels1 .. 20) through a connector on the rear panel. Channels 0, 1, and 11 can measure amaximum of 300V; all other channels can measure a maximum of 150V. Caution The maxi...

2620A, 2625A Users Manual 2-10 • Active Mode if this mode was in effect prior to the cycling of power. Scanning,monitoring, or combined scanning/monitoring is resumed. • Inactive Mode if the instrument was in Inactive Mode or Configuration Mode priorto cycling of power. When in Inactive Mode, the in...

Overview Front Panel Buttons 2 2-11 Front Panel Buttons Go ahead and press any front panel button. The instrument always provides an audibleresponse to each button press. Valid entries yield a short beep; incorrect entries yield alonger beep. Don’t worry if you press an inappropriate button and get ...

2620A, 2625A Users Manual 2-12 Table 2-2. Front Panel Pushbuttons (cont) M Turns the Monitor function on or off. I Allows you to change the scan interval. Scanning becomes continuous when theinterval is set to 0:00:00. U Enables/disables logging measurements to the printer (Autoprint - RS-232 only) ...

2620A, 2625A Users Manual 2-14 Note Any old alarm status/limits, Review array values, or scaling parametersare automatically cleared whenever you change a channel’s function. Setting Alarm Limits and Mx+B Scaling Values Alarm limits and Mx+B scaling values are set in a manner very similar to that us...

Overview Setting the Scan Interval 2 2-15 Mx+B Scaling The menu for setting Mx+B scaling values takes you through the following steps: • Set the M value (sign and number). • Set the decimal point location for the M value. • Set the multiplier for the M value (m, x1, k, M). • Set the B value (sign an...

2620A, 2625A Users Manual 2-16 Using the Monitor Function The Monitor function repeatedly measures the displayed channel. Press M to activate the Monitor function. Use G and D to change the monitored channel; undefined channels (those set to OFF) are automatically skipped over. Since the instrument ...

Overview Viewing the Totalizer Count 2 2-17 To clear out the contents of the Review array, press N to call the review data up to the display, and then select CLEAR ( K N ). The entire array is then cleared. All array values, including the displayed value, are changed to "-----". If a scan is...

2620A, 2625A Users Manual 2-18 Using the Rack Mount Kit Use the M00-200-634 Rack Mount Kit to mount the instrument in a standard 19-inchrack. First, rotate the two bottom feet on the instrument 180 degrees so that the supportpads point up. Then install the instrument per the instructions provided wi...

3-1 Chapter 3 Operating the Instrument from the Front Panel Title Page Introduction ....................................................................................................... 3-3 Operating Modes ...............................................................................................

Operating the Instrument from the Front Panel Introduction 3 3-3 Introduction Chapter 3 describes how to use the instrument features that were introduced in Chapter2. The introductory information in Chapter 2 is designed to give you a feel for theinstrument’s controls and display. The information pr...

2620A, 2625A Users Manual 3-4 Other Displayed Data An array of "MIN", "MAX", and "LAST" values for each channel is updated wheneverscan measurements are taken. This Review array can be displayed from Active orInactive (but not Configuration) Mode by pressing N . The constantl...

Operating the Instrument from the Front Panel Channel Configuration 3 3-9 Table 3-6. RTD Temperature Channel Function Type (Note 1) Terminals (Note 2) R0 (Ice Point) (Note 3) PRESSTHESEBUTTONS: G D F G D E G D E G D E GDHJ E TOSELECTFROMTHESECHOICES: 01 .. 20 OFF V DC V AC Ω Hz ° C or ° F J KE T NR ...

2620A, 2625A Users Manual 3-10 Alarm evaluation is not carried out for a channel if: • The limit sense is changed to "OFF". Alarm checking and the alarm limit values arere-enabled by setting limit sense to "HI" or "LO". • An open thermocouple has been detected on that channel...

Operating the Instrument from the Front Panel Channel Configuration 3 3-11 Alarm annunciation is disabled when the instrument is in Inactive or ConfigurationMode. ALARM annunciation and evaluation follow these rules: 1. When any channel reading from the latest scan is in alarm (but the presentlydisp...

2620A, 2625A Users Manual 3-12 At any Configuration Reset (power up C or computer interface *RST), alarm limits on channels 4 through 20 are assigned to Digital I/O lines 4 through 7 in the "ORed" patternshown in Table 3-8. These assignments can be changed via the Computer Interface. Eachlim...

2620A, 2625A Users Manual 3-14 Table 3-9. Mx+B Selection Channe l Sign, M Value Decimal Point Position Multiplier (Note 1) PRESSTHESEBUTTONS: G D B G D H J E G D H J E G D H J E TO SELECTFROMTHESECHOICES: 0 1..20 ± 0000 0000.0000.0000.0000.0000 mx1kM (Continue toB valuebelow) Sign, M Value Decimal P...

Operating the Instrument from the Front Panel Instrument Configuration 3 3-15 This number editing technique occurs during Configuration Mode operations wheneveryou are setting a numeric value. Instances of number editing include the following: • R0 (RTD)Table 3-6 • Alarms Table 3-7 • Mx+B Scaling Ta...

2620A, 2625A Users Manual 3-16 Table 3-11. Measurement Rate Selection Press these buttons: RATE( KJ )] G D E To select from thesechoices: SLOFAST (Completes selectionand returns to InactiveMode) Triggering To set the scan triggering type from the front panel, use the procedure shown in Table 3-12. T...

Operating the Instrument from the Front Panel Measurement Connections 3 3-17 Setting Date and Time of Day The instrument features a built-in, battery-maintained clock and calendar. Verify orchange the settings using the steps shown in Table 3-13. If necessary, refer to "Enteringand Changing Nume...

2620A, 2625A Users Manual 3-20 Resistance and RTD For all channels (0 through 20), 2-terminal resistance or RTD measurements are allowed.Four-terminal measurements can be made on channels 1 through 10 only. Refer toFigure 3-3. For each channel configured for 4-terminal measurements (channels 1-10 on...

2620A, 2625A Users Manual 3-22 Totalizing General Event counting (totalizing) is commonly used on production lines for counting items.The instrument counts events by detecting low-to-high voltage transitions; each low-to-high transition increments the totalizer value by one. The maximum count is 655...

Operating the Instrument from the Front Panel List Button Functions 3 3-23 Table 3-15. Review Array Activate (Note 1) Review Points Deactivate (Note 3) N H J N 20 LAST MIN MAX or G • C • • • D 0 LAST MIN MAX Note 1. Review array can be entered only from a channel that is defined for some type of mea...

Operating the Instrument from the Front Panel Autoprint 3 3-25 Autoprint The front panel setup procedure is summarized in Table 3-17. Begin this procedure byselecting MODE ( K U ). Select the scan data destination ("dESt" in right display) as "Print" (left display). For the Hydra Ser...

2620A, 2625A Users Manual 3-26 Table 3-17. Autoprint/Memory Storage Selection Destination (“dESt”) (Note 1) Mode (“MOdE”) (Note 2) Press thesebuttons:P MODE KU ) G D E G D E To select fromthese choices: Print StorE both ALL ALAr trAnS Note 1. “Print” Sends data to be printed through the RS-232 inter...

Operating the Instrument from the Front Panel REM Annunciator 3 3-27 G and D can now be used to change the monitored channel. All other front panel buttons are locked out; a long beep results from their use. Press both F and B again to deactivate the Monitor Only function and return the instrument t...

4-1 Chapter 4 Using the Computer Interface Title Page Introduction ....................................................................................................... 4-3 Front Panel and Computer Interface Operations........................................... 4-3 Types of Computer Interface .......

Using the Computer Interface Introduction 4 4-3 Introduction The instrument can be operated from a host via commands sent through the rear panelcomputer interface. The host can be a terminal, controller, PC, or other computer. This chapter describes how to set up and operate the instrument via the R...

2620A, 2625A Users Manual 4-4 Setting Communication Parameters (RS-232) Baud rate ("bAUd"), parity ("PAR"), and echo ("Echo") parameters can be set directlyby the user; number of data bits and number of stop bits cannot be set. Refer to Figure 4-1. For the instrument and host...

2620A, 2625A Users Manual 4-6 10:33:45 5/11/90 Lines following the time and date contain measurement data for channels that have beenset up for this session. The last line of the printout contains the Totalizer count and thestatus of the digital I/O lines. Channel data is formatted to fit three read...

Using the Computer Interface Using the RS-232 Computer Interface 4 4-7 Data for the oldest set of scan readings in Hydra Series II Data Logger memory can beretrieved with the LOG? query. Each set of scan readings is cleared from memory whenread with LOG? The LOG? query returns the following informat...

2620A, 2625A Users Manual 4-8 To connect the instrument to a specific brand of RS-232 printer, use the cable that wouldbe used to connect that printer to an RS-232 port on an IBM PC/AT (DB-9 connector).The RS42 cable is compatible with most serial printers; contact Fluke for printercompatibility inf...

Using the Computer Interface Using the IEEE-488 Interface 4 4-9 RS-232 Prompts The instrument parses and executes, in turn, each command received from the host overthe RS-232 interface. The instrument returns one of the following three responseprompts to indicate the results of command execution: =&...

2620A, 2625A Users Manual 4-12 Table 4-2. IEEE-488.1 Capabilities Capability Description SH1 and AH1 Read and write bus handshaking, including hold off. T5 Basic talker with serial poll and without talk only mode. Serial poll is used toreturn the instrument status byte to the controller. TE0 No exte...

Using the Computer Interface General Information (RS-232 and IEEE-488) 4 4-13 2. Press D to scroll to "IEEE"; then press E to enable the IEEE-488 interface and disable the RS-232 interface. "IEEE" will not appear in the left display if the IEEE-488 interface is not installed. 3. The ...

2620A, 2625A Users Manual 4-14 Input Strings The instrument processes and executes valid input strings sent by the host. A valid inputstring is one or more syntactically correct commands, separated by semicolons (;),followed by an input terminator. ASCII and IEEE-488 bus codes are provided inAppendi...

2620A, 2625A Users Manual 4-16 Sending Numeric Values to the Instrument (RS-232 and IEEE-488) Numeric values can be sent to the instrument as integers, real numbers, or real numberswith exponents, as shown in the following examples: EXAMPLE EXPLANATION +12345 Sends the signed integer “+12345” 123.45...

Using the Computer Interface General Information (RS-232 and IEEE-488) 4 4-17 loaded, the Message Available (MAV) bit in the Status Byte Register is set true. (Formore information, see "Status Byte Register" later in this chapter.) Numeric output from the instrument is returned as shown in t...

2620A, 2625A U s ers Manual 4- 18 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 & & & & & & & & Logical OR Standard Event Status Register Read Using * ESR? Standard Event Status Enable Register Read Using * ESE? Write to Using * ESE Power On Command Error Execution Error Device Dep...

Using the Computer Interface General Information (RS-232 and IEEE-488) 4 4-19 Table 4-4. Status Byte Register Bit Name Description 0 IEB Instrument Event Bit. When any bit in the Instrument Event Register is set andthe corresponding mask bit(s) in the Instrument Event Enable register is set,this Ins...

2620A, 2625A Users Manual 4-20 Table 4-5. Event Status Register Bit Name Description 0 OPC Operation Complete. Set true (1) upon execution of the *OPC command,indicating that the instrument has completed all selected pending operations. 1 not used Always set to 0. 2 QYE Query Error. Generated true (...

Using the Computer Interface General Information (RS-232 and IEEE-488) 4 4-21 Service Request Enable Register The Service Request Enable Register (SRE) is an 8-bit register that enables or disables(i.e., masks) corresponding summary messages in the Status Byte Register (STB). Theinstrument can be pr...

2620A, 2625A Users Manual 4-22 Table 4-6. Instrument Event Register (IER) Note Whenever the Instrument Event Register is read, the condition bits are cleared. This register is used in conjunction with the Instrument Event Enable Register to determine the conditionsunder which the Instrument Event Bi...

5-1 Chapter 5 Additional Considerations Title Page Introduction ....................................................................................................... 5-3Measurement Rate ............................................................................................. 5-3Advanced Trigge...

Additional Considerations Introduction 5 5-3 Introduction Chapter 5 discusses some topics that will help you use the instrument more effectively.These considerations assume that you are familiar with the basic operation of theinstrument and have some basic understanding of electronics. Measurement R...

2620A, 2625A Users Manual 5-4 Verify the trigger type over the computer interface by sending the query: TRIGGER? Single scans can be triggered via the RS-232 interface or the IEEE-488 interface bysending the *TRG command. Note that the IEEE-488 interface GET command can beused only when the IEEE-488...

2620A, 2625A Users Manual 5-6 Monitor Alarm Enabled (Type 2) This corresponds to the Front Panel ALAr or Computer Interface TRIGGER=2 setting.When the Monitor Alarm trigger is enabled and the Monitor function is on, a scan istriggered if the monitor measurement is found to be in alarm. After this sc...

2620A, 2625A Users Manual 5-8 Table 5-1. Ohms Test Voltage Range Typical Full Scale Voltage 300.00 Ω 0.22 3.0000 k Ω 0.25 30.000 k Ω 0.29 300.00 k Ω 0.68 3.0000 M Ω 2.25 10.000 M Ω 2.72 • 4-Terminal Configuration In 4-terminal configuration, the instrument uses a second pair of leads toautomatically...

Additional Considerations Making Mixed Measurements 5 5-9 average-responding measurement devices display the correct rms reading of 1.0000V(the dc component equals 0). However, consider the 2V (peak-to-peak) square wave. Both types of measurement correctly display the dc component (0V), but the inst...

Additional Considerations Using Shielded Wiring 5 5-11 • Avoid connecting inputs with ac volts signals to any channel 10 numbers away froma sensitive channel (i.e. 4-terminal input channels.) • Avoid tying L (low) or (especially) H (high) inputs of a sensitive channel to earth(chassis) ground. This ...

2620A, 2625A Users Manual 1. Connect the shield to L (low) at the 2620A-100 Input Module, and try connecting thesensor shield to a quiet earth ground at or very near the measurement sensor end(and at only one place), or 2. Connect the shield to L (low) at the Input Module, and try connecting the shi...

6-1 Chapter 6 Maintenance Title Page Introduction ....................................................................................................... 6-3Cleaning............................................................................................................. 6-3Line Fuse ...............

Maintenance Introduction 6 6-3 Introduction This chapter describes basic maintenance that the instrument user can perform. Do notattempt any maintenance not described in this chapter. For additional maintenance,service, and calibration procedures, qualified service personnel can refer to the HydraSe...

2620A, 2625A Users Manual 6-4 Power-Line Cord Connector Line Fuse (T 125 mA, 250V, Slow Blow) Fuse Holder (Spare Fuse Provided) Complies with the limit for a class B computing device pursuant to Subpart J of Part 15 of FCC Rules + – 0 1 2 3 TR 0 1 2 3 4 5 6 7 Σ 9-16 V DC PWR ! +30V DIGITAL I/O MEETS...

Maintenance Performance Tests 6 6-7 Accuracy Verification Test 1. Power up the instrument and allow it to temperature stabilize for 1/2 hour. 2. Connect a cable from the Output VA HI and LO connectors of the 5700A to the V Ω and COM connectors on the front panel of the Hydra Series II Instrument. Se...

Maintenance Performance Tests 6 6-9 Table 6-3. Performance Tests (Voltage, Resistance, and Frequency) (cont) Using inputs in decades of 1.9: 300 Ω short 0.00 0.09 190 Ω 189.93 190.12 3 k Ω short 0.0000 0.0003 1.9 k Ω 1.8992 1.9008 30 k Ω 19 k Ω 18.992 19.008 300 k Ω 190 k Ω 189.91 190.09 3 M Ω 1.9 M...

2620A, 2625A Users Manual 6-10 3. Connect a cable from the Output VA HI and LO connectors of the 5700A to the V Ω and COM connectors on the front panel of the Hydra Series II Instrument. 4. Set the 5700A to output 0V dc 5. Using either a terminal or a computer running a terminal emulation program as...

Maintenance Performance Tests 6 6-11 Note 4-terminal connections are made using pairs of channels. 4-terminalmeasurements can only be made on channels 1 through 10. Theaccompanying pairs are channels 11 through 20. Thermocouple Temperature Accuracy Test Assure the Thermocouple Measurement Range Accu...

Maintenance Performance Tests 6 6-13 12 11 13 14 15 16 17 18 19 20 2 1 3 4 5 6 7 8 9 10 SOURCE (4-WIRE) SENSE (4-WIRE) H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L 4-WIRE (4T) CONNECTION DECADE RESISTANCE BOX HYDRA INPUT MODULE oo20f.eps Figure 6-3. 4-Terminal Conn...

2620A, 2625A Users Manual 6-14 RTD Temperature Accuracy Test The following two RTD Temperature Accuracy Tests are different in that one uses aDecade Resistance Source and the other uses an RTD. Only one of the tests need to beperformed to assure operation. RTD Temperature Accuracy Test (Using Decade...

Maintenance Performance Tests 6 6-15 RTD Temperature Accuracy Test (Using DIN/IEC 751) 1. Switch OFF power to the instrument and disconnect all other high voltage inputs. 2. Remove the Input Module from the rear of the instrument. Open the Input Moduleand connect a Platinum RTD, conforming to the Eu...

2620A, 2625A Users Manual 6-16 Digital Output Test 1. Ensure that communication parameters (i.e., transmission mode, baud rate, parity,and echo mode) on the Hydra Series II and the host are properly configured to sendand receive serial data. Refer to Chapter 4. 2. Switch OFF power to the instrument ...

Maintenance Performance Tests 6 6-17 Verify that the returned value as shown on the Host screen = 255. Note The number returned is the decimal equivalent of the Digital Input binaryword (inputs 0 through 7’s status). See Table 6-7 to determine if thenumber returned corresponds to the bits jumpered t...

2620A, 2625A Users Manual 6-18 5. Press the TOTAL button on the front panel of Hydra Series II. Assure Hydra Series II displays a 0 value. 6. Jumper output 0 to the Total ( ∑ ) input by connecting the ( ∑ ) terminal test lead to output 0’s test lead. 7. Using either a terminal or a computer running ...

Maintenance Performance Tests 6 6-19 Hydra Series II’s display should now show the totalizing value incrementing at a 10count per second rate. Dedicated Alarm Output Test The Dedicated Alarm Output Test verifies that Alarm Outputs 0 through 3 arefunctioning properly. Because this test is dependent o...

Maintenance Calibration 6 6-21 External Trigger Input Test The External Trigger Input Test verifies that the rear panel trigger input of Hydra SeriesII is functioning properly. 1. Switch OFF power to the instrument and disconnect all high voltage inputs. 2. Remove the Alarm Output eight terminal con...

2620A, 2625A Users Manual 6-22 no parts to disassemble, no mechanical adjustments to make, and the instrument can becalibrated by an automated instrumentation system. The instrument should normally be calibrated on a regular cycle, typically every 90 daysor 1 year. The chosen calibration cycle depen...

Appendices Appendix Title Page A Specifications....................................................................................................... A-1B ASCII & IEEE-488 Bus Codes ............................................................................ B-1C IEEE-488.2 Devise Documentation...

A-1 Appendix A Specifications Introduction The instrument specifications presented here are applicable within the conditions listedin the Environmental chapter. The specifications state total instrument accuracy following calibration, including: • A/D errors • Linearization conformity • Initial cali...

2620A/2625A Users Manual A-2 DC Voltage Inputs Range Resolution Slow Fast 300 mV 10 µ V 0.1 mV 3 V 0.1 mV 1 mV 30 V 1 mV 10 mV 300 V 10 mV 0.1 V Accuracy ± (% ± V) Range 18°C to 28°C 0°C to 60°C 90 Days, Slow 1 Year, Slow 1 Year, Fast 1 Year, Slow 1 Year, Fast 300 mV 0.018% + 20 µV 0.023% + 20 µV 0....

Appendices Specifications A A-3 Thermocouple Inputs Temperature Measurements - Accuracy (Thermocouples) (IPTS-68) Thermocouple Accuracy (±°C)* 18°C to 28°C 0°C TO 60°C Type Temperatur e (C°) 90 Days Slow 1 Year Slow 1 Year Fast 1 Year Slow 1 Year Fast -100 to -30 0.43 0.44 0.91 0.55 1.09 J -30 to 15...

Appendices Specifications A A-5 Input Impedance 100 M Ω minimum in parallel with 150 pF maximum Common Mode and Normal Mode Rejection See Specifications, DC Voltage Inputs Cross-Talk Rejection Refer to Appendix D Open Thermocouple Detect Small ac signal injection and detection scheme before each mea...

2620A/2625A Users Manual A-6 IEC 751, Amendment 2, 100 e Platinum (ITS-90) RTD 4 Wire Accuracy* (±°C) Temperature Resolution 18°C to 28°C 0°C to 60°C (°C) Slow Fast 90 Day Slow 1 Year Slow 1 Year Fast 1 Year Slow 1 Year Fast -200.00 0.02 0.1 0.13 0.13 0.54 0.13 0.55 0.00 0.02 0.1 0.09 0.09 0.55 0.13...

2620A/2625A Users Manual A-8 Frequency Maximum Input at Upper Frequency 20 Hz - 50 Hz 300 V rms 50 Hz - 100 Hz 300 V rms 100 Hz - 10 kHz 200 V rms 10 kHz - 20 kHz 100 V rms 20 kHz - 50 kHz 40 V rms 50 kHz - 100 kHz 20 V rms Input Impedance 1 M Ω in parallel with 100 pF maximum Maximum Maximum Crest ...

Appendices Specifications A A-9 Ohms Inputs Range Resolution Typical Full Maximum Current Through Maximum Open Slow Fast Scale Voltage Unknown Circuit Voltage 300 Ω 10 m Ω 0.1 Ω 0.22 V 1 mA 3.2V 3 k Ω 0.1 Ω 1 Ω 0.25V 110 µ A 1.5 V 30 k Ω 1 Ω 10 Ω 0.29 V 13 µ A 1.5 V 300 k Ω 10 Ω 100 Ω 0.68 V 3.2 . µ...

2620A/2625A Users Manual A-10 Frequency Inputs Frequency Range 15 Hz to greater than 1 Mhz Range Resolution Accuracy + (% ± Hz) Slow Fast Slow Fast 15 Hz - 900 Hz 0.01 Hz 0.1 Hz 0.05% + 0.02 Hz 0.05% + 0.2 Hz 9 kHz 0.1 Hz 1 Hz 0.05% + 0.1 Hz 0.05% + 1 Hz 90 kHz 1 Hz 10 Hz 0.05% + 1 Hz 0.05% + 10 Hz ...

Appendices Specifications A A-11 Typical Scanning Rate See table below. The measurement conditions are: averaged rate over 20 scans;continuous scanning; alarm limits and Mx+B scanning set on all channels; logging datato internal memory; and RS-232 communications set at 9600 baud. Measurements wereta...

2620A/2625A Users Manual A-12 Maximum Autoranging Time (Seconds per Channel) Function Range Change Slow Fast VDC 300 mV ---------------------------- > 150 V 0.25 0.19 150 V 300 mV ---------------------------- > 0.26 0.19 VAC 300 mV ---------------------------- > 150V 4.50 4.12 150 V 300 mV ...

Appendices Specifications A A-13 Isolation nonedc-coupled Threshold 1.4V Hysteresis 500 mV Trigger Input Input Voltages contact closure and TTL compatible“high” =2.0V min, 7.0V max“low” = -0.6V min, 0.8V max Isolation Nonedc-coupled Minimum Pulse Width 5 µs Maximum Frequency 5 Hz Specified Condition...

2620A/2625A Users Manual A-14 Digital and Alarm Outputs Output Logic Levels Logical “zero”: 0.8V max for an Iout of -1.0 mA (1LSTTL load) Logical “one”: 3.8V min for an Iout of 0.05 mA (1LSTTL load) For non-TTL loads: 1.8V max for an Iout or -20 mALogical “zero”: 3.25 max for an Iout of -50 mA Isola...

Appendices Specifications A A-15 Altitude Operating: 2,000 m maximumNon-operating: 12,200 m maximum Vibration 0.7 g at 15 Hz1.3 g at 25 Hz3 g at 55 Hz Shock 30 g half sine per Mil-T-28800Bench handling per Mil-T-28800 General Channel Capacity 21 Analog Inputs4 Alarm Outputs8 Digital I/O (inputs/outp...

2620A/2625A Users Manual A-16 Power 90V to 264V ac (no switching required), 50 and 60 Hz, 10 VA maximum9V dc to 16V dc, 10W maximumIf both sources are applied simultaneously, ac is used if it exceeds approximately 8.3times dc.Automatic switchover occurs between ac and dc without interruption.(At 120...

2620A/2625A Users Manual B-2 B 7 B 6 B 5 B 4 2 7 2 6 2 5 2 4 B 3 2 3 2 2 2 1 2 0 B 2 B 1 B 0 BITS NUL SP ! " 1 2 # $ 0 @ P p NUL SOH GTL DLE MLA0 MLA16 @ MTA0 P MTA16 MSA0 MSA16 P SPACE CONTROL UPPER CASE LOWER CASE NUMBERS SYMBOLS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 ...

C-1 Appendix C IEEE-488.2 Devise Documentation Requirements Introduction Section 4.9 of the IEEE Standard 488.2-1987 states: "All devices shall supplyinformation to the user about how the device has implemented this standard." (In thiscontext, "device" means the Fluke 2620A Hydra Ser...

2620A/2625A Users Manual C-2 Measurement rate: Slow. Scaling (M):1 (all channels) Offset (B): 0 (all channels) Alarm parameters: Limit-1 and Limit-2 OFF. All limit values 0. Alarm assignments: Channels 0-3 assigned to outputs 0-3,respectively.Channels 4-20 assigned to digital I/O lines 4-7, as shown...

Appendices IEEE-488.2 Devise Documentation Requirements C C-3 <PROGRAM MESSAGE UNIT> <PROGRAM MESSAGE UNIT SEPARATOR> <COMMAND MESSAGE UNIT> <QUERY MESSAGE UNIT> <COMMAND PROGRAM HEADER> <QUERY PROGRAM HEADER> <PROGRAM DATA> <CHARACTER PROGRAM DATA> &l...

2620A/2625A Users Manual C-4 There are no device-to-device messages. 11. The size of any block data responses, Section 8.7.9.4. There are no block data responses. 12. A list of common commands and queries which are implemented, Section 10. *CLS, *ESE, *ESE?, *ESR?, *IDN?, *OPC, *OPC?, *RST, *SRE, *S...

Appendices IEEE-488.2 Devise Documentation Requirements C C-5 22. For each command, a statement describing whether is overlapped or sequential. All commands are sequential; none are overlapped. 23. For each command, the device documentation shall specify the functional criteriathat are met when an o...

D-1 Appendix D Making Mixed Measurements Introduction This appendix augments the discussion of ac signal effects on other channels (cross talk)found in Chapter 5 ("Making Mixed Measurements"). Effects on each measurementfunction are discussed below. These numbers should only be considered as...

2620A/2625A Users Manual D-2 AC Signal Cross Talk Into an AC Voltage Channel ACV Error Ratio = VACrms error VACrms crosstalk Frequency crosstalk ( ) ( ) ( ) ×     Range Ratio (worst case) Ratio (typical) × v Hz ×   × v Hz ×   × v Hz ×   × v Hz ×   30.000 V 1.2 × 10 -6 v Hz × ...

Appendices Making Mixed Measurements D D-3 AC Signal Crosstalk Into a Temperature Channel Frequency = 50, 60 Hz TEMPERATURE Error Ratio = °   C error VACrms crosstalk ( ) ( ) Types J, K, E, T, N: Worst case Typical 2.7 × 10 -3 °   C Vrms 5.0 × 10 -4 °   C Vrms Types R, S, B, C: 1.1...

E-1 Appendix E Binary Upload of Logged Data (LOG_BIN?) (2625A only) Introduction The LOG_BIN? <index> query can be used to quickly upload logged data from a 2625A.The response is a single ASCII string, which encodes the raw binary data stored at thespecified <index> position. The logged ...

Appendices Binary Upload of Logged Data (LOG_BIN?) (2625A only) E E-3 The raw data output array contains the information listed below. Note that the number offloating point values is equal to the number of channels in use, plus one. (The totalizercount is always present in the data, and is stored as...

2620A/2625A Users Manual E-4 The floating point format used is 32-bit with a 1-bit sign, 8-bit exponent, and 24-bitmantissa with the most significant bit hidden under the LSB of the exponent. Thenumber is formatted as shown in Table F-1. Table E-1. Floating Point Format sign 1 bit exponent 8 bits ma...

F-1 Appendix F RS-232 Cabling Introduction This appendix details the RS-232 cabling between the instrument and a PC, instrumentcontroller (Fluke 17XXA series), printer, or modem. All connections can be made usingthe Fluke RS-series of cables (see Options and Accessories in Chapter 1). RS-232 cabless...

Hydra Configuration Record SET-UP NAME_________________________________________ DATE_________________________ SCAN RATE: q Slow TEMPERATURE UNITS q °C q °F q Fast COMMUNICATION I/F q RS-232-C SCAN INTERVAL:_______ :_______: _______ Baud Rate _______________________ OUTPUT: q Printer Parity q Even q ...

1 Index —2— 2-wire accuracy, A-6, A-9 —4— 4-terminal resistance test, 6-10 —A— AC signal cross talk in a dc voltage channel, D-1AC signal cross talk into a frequency channel, D-2 AC signal cross talk into an ac voltage channel, D-2 AC signal cross talk into an ohms channel, D-2AC signal crosstalk in...