Tektronix CFG280 - Manuals - manualsarea.com

Page 3 - WARRANTY

WARRANTY Tektronix warrants that this product will be free from defects in materials andworkmanship for a period of one (1) year from the date of shipment. If any such productproves defective during this warranty period, Tektronix, at its option, either will repair thedefective product without charg...

Page 5 - Table of Contents

CFG280 User Manual i Table of Contents General Safety Summary iii . . . . . . . . . . . . . . . . . . . . . . . . . . . . Getting Started 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparing the Function Generator for Use 2 . . . . . . . . . . . . . . . . . Front Pan...

Page 6 - ii

Page 7 - General Safety Summary; Injury Precautions

CFG280 User Manual iii General Safety Summary Review the following safety precautions to avoid injury and preventdamage to this product or any products connected to it. Injury Precautions Use Proper Power Cord To avoid fire hazard, use only the power cord specified for thisproduct. Avoid Electric Ov...

Page 8 - Product Damage Precautions; To prevent product overheating, provide proper ventilation.; Safety Terms and Symbols; These terms may appear in this manual:

General Safety Summary iv CFG280 User Manual Do Not Operate in Wet/Damp Conditions To avoid electric shock, do not operate this product in wet or dampconditions. Do Not Operate in Explosive Atmosphere To avoid injury or fire hazard, do not operate this product in anexplosive atmosphere. Product Dama...

Page 9 - Terms on the Product; These terms may appear on the product:; Symbols on the Product; The following symbols may appear on the product:; Certifications and Compliances; CSA Certified Power Cords

General Safety Summary CFG280 User Manual v CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property. Terms on the Product These terms may appear on the product: DANGER indicates an injury hazard immediately accessible as youread the ...

Page 11 - Getting Started

CFG280 User Manual 1 Getting Started The Tektronix CFG280 Function Generator produces low distortionsine waves, square waves, triangle waves, TTL sync signals, positiveand negative pulses, and ramp waveforms in a frequency range of0.1 Hz to 11 MHz. You can also directly control amplitude andDC offse...

Page 12 - Preparing the Function Generator for Use; Figure 1: Line Voltage Selectors, Power Input, and Fuse Locations; To prevent damage to the instrument, set the line voltage; Set the line voltage selectors to the input line voltage. These; between the supply conductors or

Getting Started 2 CFG280 User Manual Preparing the Function Generator for Use Check the following items prior to operating the CFG280 FunctionGenerator for the first time (see Figure 1 for locations of items 1through 3): 1 2 3 Figure 1: Line Voltage Selectors, Power Input, and Fuse Locations CAUTION...

Page 13 - Check that the correct line fuse is installed. The line fuse; To prevent electrical shock, connect the power cord to a; Connect the input power cord. Use only the power cords specified

Getting Started CFG280 User Manual 3 WARNING. To prevent electrical shock, unplug the power cord and disconnect the signal cable from any signal source before checkingor replacing the fuse. 2. Check that the correct line fuse is installed. The line fuse provides protection if the equipment malfuncti...

Page 14 - Front Panel; OVERRANGE LED. Lights if you apply a frequency above

Getting Started 4 CFG280 User Manual Front Panel Figure 2 shows the front-panel controls, connectors, and indicators ofthe CFG280 Function Generator. 3 1 2 4 5 6 7 8 9 18 20 22 21 23 19 17 16 15 14 13 12 10 11 24 25 Figure 2: Front Panel Controls, Connectors, and Indicators 1. OVERRANGE LED. Lights ...

Page 15 - SEC LED. Lights when the frequency counter is in PERIOD

Getting Started CFG280 User Manual 5 The 1 and 0.1 LEDs provide accurate indication for the twolowest frequency ranges. For example, if the FREQUENCY dialis set on 2.6 and the 1 LED is lighted, the function generatoroutput frequency is 2.6 Hz. 5. FREQUENCY Range LEDs. Indicate the range (either MHz ...

Page 16 - Table 1: Effect of Symmetry Buttons on Output; slow for the incoming signal, the OVERRANGE LED lights.; ATTN Button. Selects between two levels of input signals for the

Getting Started 6 CFG280 User Manual Table 1: Effect of Symmetry Buttons on Output Waveform Left Symmetry Button Right Symmetry Button 10. SWEEP Button. Activates the internal sweep generator, which produces a signal that traverses a range of frequencies. Thisbutton enables the SWEEP RATE and SWEEP ...

Page 18 - Rear Panel; Figure 3: Rear Panel Connections; To avoid the risk of fire or damage to theCFG280; GATE INPUT BNC. This connector accepts external gate signals,; amplitude modulation signals. See page 12 for details.; VCF INPUT BNC. This connector accepts external sweep

Getting Started 8 CFG280 User Manual Rear Panel In addition to the line voltage switches, fuse, and power cordreceptacle, the items shown in Figure 3 are located on the rear panel. 1 3 2 Figure 3: Rear Panel Connections CAUTION. To avoid the risk of fire or damage to theCFG280 Function Generator, be...

Page 19 - Reference; TTL Signals; To generate a TTL signal, follow these steps:; Connect the SYNC OUT connector on the CFG280 Function; Figure 4: TTL Signal Test Setup

CFG280 User Manual 9 Reference This section describes several advanced functions of the CFG280Function Generator. The variety of swept and modulated signalsavailable from the function generator make it especially useful forsuch applications as testing servo-system or amplifier response,distortion, a...

Page 20 - Change the FREQUENCY range and rotate the FREQUENCY; dial. Observe how the frequency of the TTL signal changes.; Rotate the DC OFFSET knob. Notice that this knob has no effect; effect on TTL signals.; Internal Sweep; To use the internal sweep function, follow these steps:; Connect the MAIN OUT BNC on the CFG280 Function; Figure 5: Internal Sweep Test Setup

Reference 10 CFG280 User Manual 3. Change the FREQUENCY range and rotate the FREQUENCY dial. Observe how the frequency of the TTL signal changes. 4. Rotate the DC OFFSET knob. Notice that this knob has no effect on TTL signals. The DC OFFSET knob has no effect because the DC offset of aTTL signal is...

Page 21 - External Sweep; Figure 6: External Sweep Test Setup

Reference CFG280 User Manual 11 3. Connect another channel of the oscilloscope to the device under test (see Figure 5). 4. Push the SWEEP button out on the function generator to deactivate the internal sweep function. 5. Turn the FREQUENCY dial to the desired sweep start frequency (the lowest point ...

Page 22 - Connect an external voltage signal to the VCF INPUT on the; Amplitude Modulation; To use the amplitude modulation function, follow these steps.; Connect the MAIN OUT connector on the CFG280 Function; Figure 7: Amplitude Modulation Test Setup

Reference 12 CFG280 User Manual 2. Turn the Frequency Dial to the 0.1 position. CAUTION. To avoid damage to the CFG280, ensure that the maximum voltage into the rear panel VCF INPUT is no more than ± 10 V pk. 3. Connect an external voltage signal to the VCF INPUT on the rear panel of the instrument ...

Page 23 - Set the FREQUENCY dial to the desired carrier frequency.; To avoid damage to theCFG280 Function Generator,; Connect an external voltage signal to the EXT AM INPUT on; the external voltage source.; Generator to the oscilloscope input connector (see Figure 8).; Connect the ramp generator output to the VCF INPUT connector

Reference CFG280 User Manual 13 2. Push the sine wave FUNCTION button. 3. Set the FREQUENCY dial to the desired carrier frequency. CAUTION. To avoid damage to theCFG280 Function Generator, ensure that the maximum voltage into the rear panel VCF INPUT isno more than 5 V p-p . 4. Connect an external v...

Page 24 - Connect the MAIN OUTPUT of the CFG253 to a BNC T; desired number of bursts within the selected ramp duration.; Adjust the CFG253 Function Generator output duration to the

Reference 14 CFG280 User Manual Test oscilloscope Ramp Generator CFG280 MAIN OUT CFG253 To GATE INPUT (on rear panel) To VCF INPUT (on rear panel) EXT IN RAMP OUT Figure 8: Tone-Burst and Stepped Frequency Multiplication Test Setup 3. Connect the MAIN OUTPUT of the CFG253 to a BNC T connector. Conne...

Page 25 - Figure 9: Tone-Burst and Stepped Frequency Typical Waveforms

Reference CFG280 User Manual 15 Tone-Burst or stepped frequency output GATE input VCF input Figure 9: Tone-Burst and Stepped Frequency Typical Waveforms 7. Select the sweep frequency range by adjusting the FREQUENCY dial to one end of the swept range (upper orlower limit, depending on the polarity o...

Page 27 - Appendix A: Specifications; Table 2: Generator Specifications

CFG280 User Manual 17 Appendix A: Specifications Tables 2 through 5 show characteristics of the CFG280 FunctionGenerator that are guaranteed by warranty. Table 2: Generator Specifications Characteristic Measurement Outputs Square wave, sine wave, triangle wave, TTLpulse, positive and negative ramp, ...

Page 28 - Characteristic

Appendix A: Specifications 18 CFG280 User Manual Table 2: Generator Specifications (Cont.) Characteristic Measurement Amplitude Flatness(At 10 kHz, 50 Load) Within ± 0.5 dB, 0.1 Hz to 110 kHz Within ± 1.5 dB, to 1.1 MHz Within ± 2.5 dB, to 11 MHz Sine Wave Distortion <1% from 10 Hz to 100 kHz–30 ...

Page 29 - Table 3: Counter Specifications

Appendix A: Specifications CFG280 User Manual 19 Table 3: Counter Specifications Characteristic Measurement Input Selection Internal and external input selectable Frequency Range DC to 100 MHz for internal1 Hz to 100 MHz, AC coupled for external Resolution Frequency mode: 1 Hz, 10 Hz, 1 kHzPeriod mo...

Page 30 - Table 4: General Specifications

Appendix A: Specifications 20 CFG280 User Manual Table 4: General Specifications Characteristic Measurement Line Voltage Range Selectable ranges at 50 Hz to 60 Hz 90 VAC to 110 VAC 108 VAC to 132 VAC 198 VAC to 242 VAC 216 VAC to 250 VAC Operating Temperature +0 _ C to +40 _ C, 80% relative humidity...

Page 31 - Table 6: Typical Mechanical Specifications

Appendix A: Specifications CFG280 User Manual 21 Table 6: Typical Mechanical Specifications Characteristic Measurement Dimensions(H x W x D) 100 mm X 240 mm X 230 mm(3.9 in x 9.5 in x 9.0 in) Weight 3.0 kg (6.6 lb)

Page 33 - Appendix B: Maintenance; Cleaning; Use a corrugated cardboard shipping carton having inside; dampness and loose packing material.; Place the instrument into the box and firmly stabilize it with

CFG280 User Manual 23 Appendix B: Maintenance This appendix provides information for the basic maintenance of theCFG280 Function Generator. Cleaning To clean the CFG280 Function Generator, use a soft cloth dampenedin a solution of mild detergent and water. Do not spray cleanerdirectly onto the instr...

Page 34 - Troubleshooting; NOTE; Digital Display Blank

Appendix B: Maintenance 24 CFG280 User Manual Troubleshooting Use the following diagrams to identify basic problems with yourinstrument setup. The diagrams do not provide instructions for orrecommend instrument disassembly. If these diagrams fail to solveyour problem, send your instrument to the nea...

Page 35 - Inappropriate Counter Reading

Appendix B: Maintenance CFG280 User Manual 25 Toggle the SOURCE button. Inappropriate Counter Reading Start. Is the digital display frozen? Are function, gate, and attenuation settings appropriate for the input signal? Send your instrument to the nearest Tektronix service center. Change settings to ...

Page 36 - No Function Generator Output

Appendix B: Maintenance 26 CFG280 User Manual Push appropriate MULTIPLIER and FUNCTION buttons. Go to Digital DisplayBlank on page 24. Adjust with AMPLITUDE knob and MAIN button. Does oscilloscope have good connection to output jack? Yes Yes Are amplitude settings too low to produce visible signal? ...

Page 37 - Inappropriate Function Generator Output

Appendix B: Maintenance CFG280 User Manual 27 Yes Send your instrument to the nearest Tektronix service center. Adjust with AMPLITUDE knob and MAIN button. Is signal amplitude too large or too small? Yes No No Yes Start. Is signal frequency too fast or slow? Adjust with MULTIPLIER buttons and FREQUE...

Page 39 - Appendix C: Replaceable Parts; Standard Accessories; Optional Accessories; The following items are available as optional accessories:

CFG280 User Manual 29 Appendix C: Replaceable Parts Replaceable parts may be ordered directly from your authorizedTektronix dealer. Standard Accessories The following items are shipped with the CFG280 FunctionGenerator: Table 7: Standard Accessories Accessory Tektronix Part Number Fuse, 3AG, 0.6 A, ...

Page 40 - Table 9: Accessory Power Cords

Appendix C: Replaceable Parts 30 CFG280 User Manual The following power cords are available. Table 9: Accessory Power Cords Plug Configuration Normal Usage Tektronix PartNumber North America115 V 161-0104-00 Europe230 V 161-0104-06 United Kingdom230 V 161-0104-07 Australia230 V 161-0104-05 North Ame...