Tektronix DCM300 Technical Reference Download Page 350

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THM420 Adjustment Procedures

Handheld and Benchtop Instruments Basic Service

To reinstall the bottom cover following the adjustments, perform steps 1 and 4
above in reverse order.

Bottom cover

Mounting screws

Battery pack

Mounting screws

Figure 2: Removing the Bottom Cover

You must access the main circuit board to make adjustments. To expose the
board, refer to Figure 3 while performing the following steps.

1. Remove the two circuit board mounting screws with a Phillips-head

screwdriver.

2. Lift the top circuit board up and position it to the side. Do not disconnect

any cables.

3. Fold back the insulating shield that separates the top circuit board from the

bottom circuit board.

To reinstall the top circuit board following the adjustments, perform steps 1
through 3 above in reverse order.

Access the Main Circuit

Board

Summary of Contents for DCM300

Page 1: ...ents Basic Service 061 4108 00 Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to all safety summaries prior to performing service ...

Page 2: ...atents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in the U S A Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK are registered trademarks of Tektronix Inc ...

Page 3: ...hru B039999 B040000 and above 070 8330 00 070 8330 02 222PS Power Scout 070 8098 02 224 Digital Storage Oscilloscope 070 8405 02 305 DMM Oscilloscope 070 2423 01 314 Storage Oscilloscope 070 1824 00 335 Oscilloscope 070 1943 01 336 Digital Storage Oscilloscope 070 4421 00 2201 Portable Oscilloscope 070 7189 00 2205 Oscilloscope 070 6716 00 2211 Oscilloscope 070 7234 00 2214 Digital Storage Oscillo...

Page 4: ...2246 Mod A 070 7062 00 2247A Portable Oscilloscope 070 6367 00 2252 Portable Oscilloscope 070 7838 01 2335 Oscilloscope 070 4116 00 2336 Oscilloscope 070 4118 00 2336YA Oscilloscope 070 5011 00 2337 Oscilloscope 070 4120 00 TAS 455 465 Oscilloscope 070 8524 02 TAS 465 Oscilloscope 070 9403 00 TAS 475 485 Oscilloscope B010100 to B020099 B020100 and above 070 8878 01 070 9404 00 TDS 210 Oscilloscope...

Page 5: ...nnect probes or test leads while they are connected to a voltage source Ground the Product Some of these products are grounded through the grounding conductor or the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product you are using ensure that the product is properly grounded Observe ...

Page 6: ... and Dry To avoid electric shock and erroneous readings keep probe surfaces clean and dry Provide Proper Ventilation Refer to the product installation instructions for details on installing the product so it has proper ventilation Terms in this Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTIO...

Page 7: ...ary Handheld and Benchtop Instruments Basic Service v Symbols on the Product The following symbols may appear on the product Protective Ground Earth Terminal ATTENTION Refer to Manual Double Insulated DANGER High Voltage ...

Page 8: ...Ts retain hazardous voltages for long periods of time after power is turned off Before attempting any servicing discharge the CRT by shorting the anode to chassis ground When discharging the CRT connect the discharge path to ground and then the anode Rough handling may cause the CRT to implode Do not nick or scratch the glass or subject it to undue pressure when removing or installing it When hand...

Page 9: ...rom materials that do not accumulate static charges Avoid Wool and some artificial fibers which build up static charges readily wear cotton which conducts electricity and resists static accumulation Minimize the handling of static sensitive devices Transport and store static sensitive devices in their protected containers or on a metal rail Label any package that contains static sensitive parts Se...

Page 10: ...Preventing Electrostatic Discharge viii Handheld and Benchtop Instruments Basic Service ...

Page 11: ...cation and is typical or suggested not guaranteed Since manual updates occur at approxi mately six month intervals information may be incomplete or missing in some versions Some instruments have optional service information available under separate cover This manual does not duplicate information from optional service manuals Refer to the optional accessories list in your user manual for Tektronix...

Page 12: ... Or contact us by e mail tm_app_supp tek com For product support outside of North America contact your local Tektronix distributor or sales office Service Support Contact your local Tektronix distributor or sales office Or visit our web site for a listing of worldwide service locations http www tek com For other information In North America 1 800 TEK WIDE 1 800 835 9433 An operator will direct you...

Page 13: ...Instructions Manual DCM300 and DCM320 Digital Clamp Multimeters 070 9847 00 ...

Page 14: ...300 and DCM320 Digital Clamp Multimeters 1 Specifications 2 Performance Verification 5 Test Equipment 5 Set Up 6 Verification Procedure 6 Test Records 8 Adjustment Procedures 10 List of Adjustments 10 Test Equipment 10 Preparation for Adjustment 11 Adjustment Procedure 11 ...

Page 15: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 16: ... AC voltage and resistance continuity The meters use a current transformer to measure current without opening the circuit The meters automatically select the correct measurement range and have a 4000 count resolution The maximum reading is 3999 The DCM320 meter provides true RMS readings for both AC volts and AC current Figure 1 DCM300 Digital Clamp Multimeter ...

Page 17: ...l Characteristics Characteristic Description AC Voltage Auto Ranging nominal Input Impedance 10 M 100 pF Ranges 600 V and 400 V Voltage Rating 600 VRMS CAT II Resolution 400 V Range 0 1 V 600 V Range 1 V Accuracy 40 to 500 Hz 1 2 of reading 5 digits Crest Factor DCM 320 only 1 4 to 2 0 add 0 6 to accuracy 2 0 to 2 5 add 2 0 to accuracy AC Current Auto Ranging Ranges 600 A and 400 A Overload Protec...

Page 18: ...s alkaline Maximum Conductor Size 40 mm Table 3 Certifications and Compliances Certifications Canadian Standards Association certified to Standard CSA 1010 1 Standard UL3111 1 for Electrical and Electronic Measuring and Testing Equipment and I C 0 0 03 m m 3 T m IEC1010 2 032 particular requirements for hand held current clamps for electrical measurement and test Overvoltage Category Category Exam...

Page 19: ...ental Characteristics Characteristic Description Temperature Operating 0_ to 45 C 32_ to 113 F 75 relative humidity Nonoperating 20_ to 60 C 4_ to 140 F 80 relative humidity Temperature Coefficient 0 2 specified accuracy per _C at 18_ C 64_ F or 28_ C 82_ F Maximum Altitude Operating 2 200 m 7 218 ft ...

Page 20: ...trument remains fully assembled do not remove the bottom cover The DCM300 and DCM320 performance verification consists of the checks listed in Table 5 Table 5 Performance Verification Checks AC Current Check AC Voltage Check Resistance and Continuity Check Test Equipment The performance verification procedures use external traceable test equipment to directly check warranted characteristics If you...

Page 21: ...nt for 20 minutes 3 Photocopy the Test Records on pages 8 and 9 Use them to record your test results Verification Procedure The following checks verify the performance of your DCM300 or DCM320 multimeter WARNING The following procedures produce magnetic fields that may cause a malfunction in heart pacemakers or damage to sensitive equipment To check the AC current accuracy perform the following st...

Page 22: ...tput to the multimeter V and COM input terminals 3 Set the calibrator to each of the values listed in Table 8 on page 8 and verify that the multimeter display reads within the specified Low and High limits 4 Disconnect the current calibrator To check the resistance accuracy and verify the continuity function perform the following steps 1 Set the multimeter function switch to the position 2 Connect...

Page 23: ... A 09 3 10 7 60 Hz 0 7 A 09 3 10 7 100 0 A 50 Hz 2 4 A 97 6 102 4 60 Hz 2 4 A 97 6 102 4 300 0 A 50 Hz 6 2 A 293 8 306 2 60 Hz 6 2 A 293 8 306 2 400 A 50 Hz 17 A 383 417 60 Hz 17 A 383 417 600 A 50 Hz 22 A 578 622 60 Hz 22 A 578 622 Table 8 AC Voltage Checks AC Voltage Calibrator Output Test Frequency Tolerance Low Limit Test Result High Limit 0 V 0 5 V 00 0 00 5 10 0 V 500 Hz 0 6 V 09 4 10 6 100 ...

Page 24: ...ments Basic Service 9 Table 9 Resistance Checks Resistance Calibrator Output Tolerance Low Limit Test Result High Limit 0 9 000 009 Buzzer must sound 120 11 109 131 Buzzer must sound 1 000 k 0 029 k 971 1 029 k 3 700 k 0 083 k 3 617 k 3 783 k 39 00 k 0 87 k 38 13 k 39 87 k ...

Page 25: ...es in this section do not verify performance To confirm that your multimeter meets factory specifications implement the procedures in the Performance Verification section List of Adjustments Use the adjustments listed in Table 10 to return DCM300 and DCM320 multimeters to factory calibration Table 10 DCM300 and DCM320 Adjustments AC Current AC Voltage Resistance Continuity Test Equipment The test ...

Page 26: ... face down on a flat work surface 2 Remove the two screws from the meter bottom with a Phillips head screwdriver 3 Gently lift the end of the bottom cover until it unsnaps from the top cover Do not remove the circuit board mounting screws To reassemble the meter following the adjustments perform steps 2 and 3 above in reverse order Adjustment Procedure To return your instrument to factory calibrat...

Page 27: ...to the V position 3 Connect the AC voltage calibrator output to the multimeter V and COM input terminals 4 Adjust VR1 with a small flat tipped screwdriver set the multimeter reading to 300 0 5 Disconnect the voltage calibrator To adjust the resistance calibration perform the following steps 1 Set up the resistance calibrator to simulate a 1 kW resistance load 2 Set the multimeter function switch t...

Page 28: ...ds You will have to remove the bottom cover to make the adjustment and then replace the cover to make the test 5 If the buzzer does sound use a small flat tipped screwdriver to adjust VR4 until the buzzer does not sound After that use the screwdriver to adjust VR4 until the buzzer sounds again Remove the cover to adjust replace the cover to test 6 When you complete all adjustments turn the multime...

Page 29: ...ummary of Adjustments Adjustment Name Test Value Range Setting Circuit Location Tolerance Display Min Display Max AC Current 100 0 A 50 Hz VR2 1 0 A 99 0 101 0 AC Volts 300 0 V 500 Hz DCM300 50 Hz DCM320 VR1 0 3 V 299 7 300 3 Ohm 1 000 k VR3 1 999 1 001 k 150 VR4 Adjust VR4 until the buzzer just sounds ...

Page 30: ...Instructions Manual DCM330 Digital Clamp Meter 070 9848 00 ...

Page 31: ...tents DCM330 Digital Clamp Meter 1 Specifications 2 Performance Verification 5 Test Equipment 5 Set Up 6 Verification Procedure 6 Test Records 9 Adjustment Procedures 11 List of Adjustments 11 Test Equipment 11 Preparation for Adjustment 12 Adjustment Procedure 12 ...

Page 32: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 33: ...nt AC current and frequency The meter uses a Hall effect device to measure current without opening the circuit The meter automatically selects the correct measurement range and has a 4000 count resolution The maximum reading is 3999 The DCM330 meter provides true RMS readings for AC current Figure 1 DCM330 Digital Clamp Meter ...

Page 34: ...for the convenience of the user Table 1 Electrical Characteristics Characteristic Description Overload Protection 2000 A for one minute Uninsulated Wire Voltage 600 VRMS CAT II Measuring Rate 2 times per second nominal AC Current Auto Ranging Ranges 400 A and 1000 A Uninsulated Wire Voltage Rating 600 VRMS CAT II Resolution 400 A Range 0 1 A 1000 A Range 1 A Accuracy 40 Hz to 400 Hz 0 A to 400 A 1...

Page 35: ...nging Ranges 4 kHz and 10 kHz Sensitivity 6 ARMS 10 ARMS 1kHz to 10 kHz Resolution 4 kHz Range 1 Hz 10 kHz Range 10 Hz Accuracy 0 5 of reading 3 counts Peak Hold Range Low High Resolution Low 0 1 A High 1 0 A Accuracy 3 of reading 10 counts Table 2 General Specifications Characteristic Description Auto Power Off Approximately 30 minutes Battery 9 V NEDA1604 IEC6F22 JIS 006P Battery Life 40 hours a...

Page 36: ...amples of Products in this Category CAT III Distribution level mains fixed installation CAT II Local level mains appliances portable equipment CAT I Signal levels in special equipment or parts of equipment telecommunications electronics Pollution Degree 2 Do not operate in environments where conductive pollutants may be present Table 4 Environmental Characteristics Characteristic Description Tempe...

Page 37: ...east one hour H The instrument remains fully assembled do not remove the bottom cover The DCM330 performance verification consists of the checks listed in Table 5 Table 5 Performance Verification Checks AC Current Check DC Current Check Frequency Check Test Equipment The performance verification procedures use external traceable test equipment to directly check warranted characteristics If you sub...

Page 38: ... verify the performance of your DCM330 meter WARNING The following procedures produce magnetic fields that may cause a malfunction in heart pacemakers or damage to sensitive equipment To check the AC current accuracy perform the following steps 1 Set the meter function to AC 2 Select the appropriate coils as necessary to multiply the AC Current calibrator output to each of the test values given in...

Page 39: ...8 on page 10 For more information refer to the user manual of your calibrator 4 Position the clamp around the current loop of the DC current calibrator and release the clamp trigger Ensure that the clamp is entirely closed 5 Verify that the display reads within the specified Low and High Limits and record the reading 6 Before each measurement set the calibrator output to off and press the DCA AUTO...

Page 40: ...s necessary to multiply the AC Current calibrator output to 20 A 3 Position the clamp around the current loop of the AC current calibrator and release the clamp trigger Ensure that the clamp is entirely closed 4 Verify that the display reads within the specified Low and High Limits for each of the frequencies listed in Table 9 on page 10 and record the reading 5 Disconnect the calibrator Frequency...

Page 41: ...0 400 Hz 1 0 A 0 90 11 0 100 0 A 50 Hz 2 7 A 97 3 102 7 400 Hz 2 7 A 97 3 102 7 300 0 A 50 Hz 6 5 A 293 5 306 5 60 Hz 6 5 A 293 5 306 5 400 A 50 Hz 17 A 383 417 60 Hz 17 A 383 417 600 A 50 Hz 22 A 578 622 60 Hz 22 A 578 622 1000 A 50 Hz1 34 A 966 1034 60 Hz1 34 A 966 1034 1 At these frequencies the inductance of the DCM330 may shut down the output of some calibrators If this happens decrease the c...

Page 42: ...11 2 8 8 100 0 A 4 9 A 104 9 95 1 300 0 A 9 7 A 309 7 290 3 400 A 12 A 412 388 600 A 22 A 622 578 1000 A 34 A 1034 966 Table 9 Frequency Checks AC Current Frequency Tolerance Low Limit Test Result High Limit 20 A 20 Hz 3 Hz 0 017 kHz 0 023 kHz 20 A 50 Hz 3 Hz 0 047 kHz 0 053 kHz 20 A 60 Hz 3 Hz 0 057 kHz 0 063 kHz 20 A 100 Hz 4 Hz 0 096 kHz 0 104 kHz 20 A 1 kHz 8 Hz 0 992 kHz 1 008 kHz 20 A 3 kHz ...

Page 43: ...n this section do not verify performance To confirm that your multimeter meets factory specifications perform the procedures in the Perfor mance Verification section List of Adjustments Use the adjustments listed in Table 10 to return the DCM330 clamp meter to factory calibration Table 10 DCM330 Adjustments Position Error AC Current DC Current Peak Hold Test Equipment The test equipment listed in ...

Page 44: ...Remove the two screws from the case bottom with a Phillips head screwdriver 3 Gently lift the end of the case bottom until it unsnaps from the case top 4 Remove the three screws that secure the circuit board assembly to the case top Do not remove the screws that secure the circuit boards to each other 5 To access the adjustments lift the circuit board assembly far enough out of the top case to exp...

Page 45: ... to multiply the output of the AC current calibrator to 380 A at 50 Hz 3 Position the clamp around the coil of the AC current calibrator and release the clamp trigger Ensure that the clamp is entirely closed 4 Adjust VR1 to maintain the measurement error to less than 1 total while positioning the coil in the clamp 5 Remove the clamp meter from the coil To adjust the DC zero calibration perform the...

Page 46: ...o adjust the DC 1000 A range calibration perform the following steps 1 Set the clamp meter to the DC position 2 Select the appropriate coil to multiply the output of the DC current calibrator to 400 A 3 Position the clamp around the coil of the DC current calibrator and release the clamp trigger Ensure that the clamp is entirely closed 4 Press the clamp meter DCA AUTO ZERO button to zero the displ...

Page 47: ... Adjust VR7 until the display reads 400 6 Remove the clamp meter from the coil To adjust the peak hold calibration perform the following steps 1 Set the clamp meter to the AC position 2 Short the Peak Hold points indicated in Figure 2 3 Press PEAK HOLD to activate the function 4 Adjust VR9 until the display reads 00 0 5 Remove the short 6 Press PEAK HOLD to cancel the function 7 Press PEAK HOLD ag...

Page 48: ...ce Display Min Display Max Position Error AC 380 A 50 Hz VR1 5 counts 0 count 5 counts DC Zero DC VR21 0 5 00 5 00 5 DC VR3 0 1 00 1 00 1 DC 400 A Range DC 200 0 A VR5 0 5 201 2 201 8 DC 1000 A Range DC 400 A VR6 1 399 401 AC 400 A Range AC 390 0 A 400 Hz VR8 0 1 395 5 396 5 AC 1000 A Range AC 400 A 400 Hz VR7 1 399 401 Peak Hold AC VR92 00 0 00 0 AC 200 0 A 120 Hz VR102 0 1 199 9 200 1 1 Auto Zer...

Page 49: ...Instructions Manual DCM910 Digital Clamp Meter 070 9849 00 ...

Page 50: ...tents DCM910 Digital Clamp Meter 1 Specifications 2 Performance Verification 5 Test Equipment 5 Set Up 6 Verification Procedure 6 Test Records 9 Adjustment Procedures 11 List of Adjustments 11 Test Equipment 11 Preparation for Adjustment 12 Adjustment Procedure 12 ...

Page 51: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 52: ...nt AC current and frequency The meter uses a Hall effect device to measure current without opening the circuit The meter automatically selects the correct measurement range and has a 4000 count resolution The maximum reading is 3999 The DCM910 meter provides true RMS readings for AC current Figure 1 DCM910 Digital Clamp Meter ...

Page 53: ...for the convenience of the user Table 1 Electrical Characteristics Characteristic Description Overload Protection 2000 A for one minute Uninsulated Wire Voltage 600 VRMS CAT II Measuring Rate 2 times per second nominal AC Current Auto Ranging Ranges 400 A and 1000 A Uninsulated Wire Voltage Rating 600 VRMS CAT II Resolution 400 A Range 0 1 A 1000 A Range 1 A Accuracy 40 Hz to 400 Hz 0 A to 400 A 1...

Page 54: ...nging Ranges 4 kHz and 10 kHz Sensitivity 6 ARMS 10 ARMS 1kHz to 10 kHz Resolution 4 kHz Range 1 Hz 10 kHz Range 10 Hz Accuracy 0 5 of reading 3 counts Peak Hold Range Low High Resolution Low 0 1 A High 1 0 A Accuracy 3 of reading 10 counts Table 2 General Specifications Characteristic Description Auto Power Off Approximately 30 minutes Battery 9 V NEDA1604 IEC6F22 JIS 006P Battery Life 40 hours a...

Page 55: ...amples of Products in this Category CAT III Distribution level mains fixed installation CAT II Local level mains appliances portable equipment CAT I Signal levels in special equipment or parts of equipment telecommunications electronics Pollution Degree 2 Do not operate in environments where conductive pollutants may be present Table 4 Environmental Characteristics Characteristic Description Tempe...

Page 56: ...east one hour H The instrument remains fully assembled do not remove the bottom cover The DCM910 performance verification consists of the checks listed in Table 5 Table 5 Performance Verification Checks AC Current Check DC Current Check Frequency Check Test Equipment The performance verification procedures use external traceable test equipment to directly check warranted characteristics If you sub...

Page 57: ... verify the performance of your DCM910 meter WARNING The following procedures produce magnetic fields that may cause a malfunction in heart pacemakers or damage to sensitive equipment To check the AC current accuracy perform the following steps 1 Set the meter function to AC 2 Select the appropriate coils as necessary to multiply the AC Current calibrator output to each of the test values given in...

Page 58: ...8 on page 10 For more information refer to the user manual of your calibrator 4 Position the clamp around the current loop of the DC current calibrator and release the clamp trigger Ensure that the clamp is entirely closed 5 Verify that the display reads within the specified Low and High Limits and record the reading 6 Before each measurement set the calibrator output to off and press the DCA AUTO...

Page 59: ...s necessary to multiply the AC Current calibrator output to 20 A 3 Position the clamp around the current loop of the AC current calibrator and release the clamp trigger Ensure that the clamp is entirely closed 4 Verify that the display reads within the specified Low and High Limits for each of the frequencies listed in Table 9 on page 10 and record the reading 5 Disconnect the calibrator Frequency...

Page 60: ...0 400 Hz 1 0 A 09 0 11 0 100 0 A 50 Hz 2 7 A 97 3 102 7 400 Hz 2 7 A 97 3 102 7 300 0 A 50 Hz 6 5 A 293 5 306 5 60 Hz 6 5 A 293 5 306 5 400 A 50 Hz 17 A 383 417 60 Hz 17 A 383 417 600 A 50 Hz 22 A 578 622 60 Hz 22 A 578 622 1000 A 50 Hz3 34 A 966 1034 60 Hz1 34 A 966 1034 1 At these frequencies the inductance of the DCM910 may shut down the output of some calibrators If this happens decrease the c...

Page 61: ...11 2 8 8 100 0 A 4 9 A 104 9 95 1 300 0 A 9 7 A 309 7 290 3 400 A 12 A 412 388 600 A 22 A 622 578 1000 A 34 A 1034 966 Table 9 Frequency Checks AC Current Frequency Tolerance Low Limit Test Result High Limit 20 A 20 Hz 3 Hz 0 017 kHz 0 023 kHz 20 A 50 Hz 3 Hz 0 047 kHz 0 053 kHz 20 A 60 Hz 3 Hz 0 057 kHz 0 063 kHz 20 A 100 Hz 4 Hz 0 096 kHz 0 104 kHz 20 A 1 kHz 8 Hz 0 992 kHz 1 008 kHz 20 A 3 kHz ...

Page 62: ...n this section do not verify performance To confirm that your multimeter meets factory specifications perform the procedures in the Perfor mance Verification section List of Adjustments Use the adjustments listed in Table 10 to return the DCM910 clamp meter to factory calibration Table 10 DCM910 Adjustments Position Error AC Current DC Current Peak Hold Test Equipment The test equipment listed in ...

Page 63: ...Remove the two screws from the case bottom with a Phillips head screwdriver 3 Gently lift the end of the case bottom until it unsnaps from the case top 4 Remove the three screws that secure the circuit board assembly to the case top Do not remove the screws that secure the circuit boards to each other 5 To access the adjustments lift the circuit board assembly far enough out of the top case to exp...

Page 64: ... to multiply the output of the AC current calibrator to 380 A at 50 Hz 3 Position the clamp around the coil of the AC current calibrator and release the clamp trigger Ensure that the clamp is entirely closed 4 Adjust VR1 to maintain the measurement error to less than 1 total while positioning the coil in the clamp 5 Remove the clamp meter from the coil To adjust the DC zero calibration perform the...

Page 65: ...o adjust the DC 1000 A range calibration perform the following steps 1 Set the clamp meter to the DC position 2 Select the appropriate coil to multiply the output of the DC current calibrator to 400 A 3 Position the clamp around the coil of the DC current calibrator and release the clamp trigger Ensure that the clamp is entirely closed 4 Press the clamp meter DCA AUTO ZERO button to zero the displ...

Page 66: ... Adjust VR7 until the display reads 400 6 Remove the clamp meter from the coil To adjust the peak hold calibration perform the following steps 1 Set the clamp meter to the AC position 2 Short the Peak Hold points indicated in Figure 2 3 Press PEAK HOLD to activate the function 4 Adjust VR9 until the display reads 00 0 5 Remove the short 6 Press PEAK HOLD to cancel the function 7 Press PEAK HOLD ag...

Page 67: ...ce Display Min Display Max Position Error AC 380 A 50 Hz VR1 5 counts 0 count 5 counts DC Zero DC VR21 0 5 00 5 00 5 DC VR3 0 1 00 1 00 1 DC 400 A Range DC 200 0 A VR5 0 5 201 2 201 8 DC 1000 A Range DC 400 A VR6 1 399 401 AC 400 A Range AC 390 0 A 400 Hz VR8 0 1 395 5 396 5 AC 1000 A Range AC 400 A 400 Hz VR7 1 399 401 Peak Hold AC VR92 00 0 00 0 AC 200 0 A 120 Hz VR102 0 1 199 9 200 1 1 Auto Zer...

Page 68: ...Instructions Manual DMM800 Series Digital Multimeters 070 9850 00 ...

Page 69: ...3 Performance Verification 8 Test Equipment 9 Set Up 10 Verification Procedure 11 DMM830 Test Records 18 DMM850 Test Records 22 DMM870 Test Records 27 Adjustment Procedures 32 List of Adjustments 32 Test Equipment 33 Preparation for Adjustment 33 Adjustments Part 1 35 Adjustments Part 2 38 Reassembling the Multimeter 39 ...

Page 70: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 71: ...ists the features of each meter for easy comparison Figure 1 DMM870 Digital Multimeter Table 1 DMM800 Series Digital Multimeter Features Feature DMM830 DMM850 DMM870 40 000 display count D D D Bargraph D D D Centering and zooming D D True RMS or average AC measurements D D D Autorange D D D Measurements DC AC voltage D D D AC DC voltage D D D DC AC current D D D ...

Page 72: ...Frequency D D D Diodes and capacitors D D D Continuity D D D Duty factor D D Temperature D D Decibel D AC volts and amps with Hz display D D Measurement hold D D D Peak hold D Minimum maximum and average values D D D M M A time stamp D D Delta mode D D D HI LO limits D D Memory store and recall D D D Backlight D Automatic fuse verification D D D Improper input connection warning D D D ...

Page 73: ...Display count 40 000 or 4 000 Numeric update rate 1 time sec 40 000 count 4 times sec 4 000 count Bargraph 20 times sec Polarity display Automatic Overrange display OL is displayed Low voltage indicator Battery indicator Automatic power off time User selectable default 15 minutes Power source One 9 V dry cell battery Maximum input voltage 1000 V 750 V AC CAT II between V and COM Maximum floating v...

Page 74: ...z2 3 5 Bandwidth DMM830 DMM850 DMM870 1 kHz 10 kHz 20 kHz Crest factor 3 Input impedance 10 MW paralleled by 100 pF AC DC volts Same as AC RMS 1 2 10 counts3 dBm dB dBm reference 1 mV into 600 W dB reference 1 V Current AC and DC ranges 4 000 mA 400 mA 10 A 20 A maximum for 30 seconds DC accuracy 10 counts 1 DMM830 DMM850 DMM870 0 5 0 4 0 3 AC accuracy 80 counts 1 1 2 0 9 0 9 Bandwidth typical 1 k...

Page 75: ... 10 count 4 nF to 4 mF 1 delta mode 40 mF to 40 mF 3 Frequency4 Ranges 400 Hz 4 kHz 40 kHz 400 kHz 2 MHz Accuracy6 10 count 400 Hz to 400 kHz 0 01 2 MHz 0 15 Sensitivity 0 5 Vp p Duty factor Accuracy 0 1 0 05 per kHz for 5 V input Range 15 Hz to 10 kHz 10 to 90 duty factor Temperature Range 50_ to 980_ C Accuracy 2_ C Thermocouple type K Peak measurements3 Accuracy DC volts 5 40 counts of the peak...

Page 76: ...500 Hz 3 axes 10 minutes each Nonoperating 3 48 gRMS 5 to 500 Hz 3 axes 10 minutes each Table 6 Certifications and Compliance Characteristic Description EC Declaration of Conformity Meets the intent of Directive 89 336 EEC for Electromagnetic Compatibility and Low Voltage Directive 73 23 ECC for Product Safety Compliance was demonstrated to the following specifications as listed in the official Jo...

Page 77: ...teristic Description Overvoltage category CAT III Distribution level mains fixed installation CAT II Local level mains appliances portable equipment CAT I Signal level special equipment or parts of equipment telecommunication electronics Pollution Degree 2 Do not operate in environments where conductive pollutants may be present ...

Page 78: ...humidity of less than 75 H The multimeter stabilizes in the stated ambient temperature for one hour H The multimeter warms up for five minutes H For AC measurements allow the multimeter to settle to its final value before taking the measurement H The multimeter remains fully assembled and in the holster The DMM800 Series performance verification consists of the checks listed in Table 7 Table 7 Per...

Page 79: ...Before beginning the performance verification procedures warm up the test equipment according to the manufacturer s recommendations Table 8 Test Equipment Description Minimum Requirements Example Product ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ Universal Calibration System ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ Resolution accuracy 4 times greater than the multimeter display reading ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ...

Page 80: ...warm up period and throughout the entire verification procedure Set the auto power off time to a large value or disable the auto power off by pushing the Blue button when turning the dial from the OFF position 3 Warm up the multimeter for five minutes 4 Set the Digits to the 40 000 counts display 5 Pages 18 through 31 contain Test Records for the DMM800 series multime ters Each model has its own t...

Page 81: ...e calibrator from the multimeter Perform the following steps to verify the DC volts measurement accuracy 1 Set the multimeter dial to V 2 Connect the calibrator outputs to the multimeter _C V W and COM input connectors 3 Set the calibrator to each of the values in the DC Volts Test record and verify that the multimeter reads within the specified Display Minimum and Maximum limits 4 Set the calibra...

Page 82: ...nt accuracy 1 Set the multimeter dial to Hz 2 Connect the calibrator outputs to the multimeter _C V W and COM input connectors 3 Set the calibrator to each of the values in the Frequency Test record and verify that the multimeter reads within the specified Display Minimum and Maximum limits 4 Set the calibrator output to OFF 5 Disconnect the calibrator from the multimeter Perform the following ste...

Page 83: ...ent accuracy in LV mode 1 Set the multimeter dial to W 2 Push the BLUE button to select the LV mode 3 Connect the calibrator outputs to the multimeter _C V W and COM input connectors 4 Set the calibrator to each of the values in the Low Voltage W Test record and verify that the multimeter reads within the specified Display Minimum and Maximum limits 5 Set the calibrator output to OFF 6 Disconnect ...

Page 84: ...alibrator output to OFF 6 Disconnect the calibrator from the multimeter Perform the following steps to verify the capacitance measurement accuracy 1 Set the multimeter dial to 2 Set the noise suppression to 60 Hz a Press the DMM SETUP key repeatedly until the upper display reads 5060 b Set the main display to 60 Hz with the and keys 3 Null the residual DMM and lead capacitance offset a Using Fluke...

Page 85: ...verify the temperature measurement accuracy 1 Set the multimeter dial to _C _F 2 Connect the ATK01 thermocouple adapter to the multimeter _C V W and COM input connectors 3 Connect the Standard thermocouple K type of the calibrator to the ATK01 thermocouple adapter 4 Allow five minutes for the connector temperature to stabilize 5 Set the calibrator to each of the values in the Temperature Test reco...

Page 86: ...F 5 Disconnect the calibrator from the multimeter Perform the following steps to verify the AC milliampere measurement accuracy 1 Set the multimeter dial to mA 2 Push the BLUE button to select AC mode 3 Connect the calibrator outputs to the multimeter mA mA and COM input connectors 4 Set the calibrator to each of the values in the AC Milliampere Test record and verify that the multimeter reads wit...

Page 87: ...urement accuracy 1 Set the multimeter dial to A 2 Push the BLUE button to select AC mode 3 Connect the calibrator outputs to the multimeter A and COM input connectors 4 Set the calibrator to each of the values in the AC Ampere Test record and verify that the multimeter reads within the specified Display Minimum and Maximum limits 5 Set the calibrator output to OFF 6 Disconnect the calibrator from ...

Page 95: ...rd if instability occurs 2 Set the DMM to Delta mode Delta mode removes stray capacitance for low capacitance measurements 3 Set the DMM noise suppression to 60 Hz with the SETUP mode See Page 14 for detailed instructions Temperature Test ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ 0 0_ C ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 2_ C ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 2 0 ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 2 0 ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ 40 0_ C ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 2_ C ÁÁÁÁÁÁ...

Page 97: ...ÁÁ 350 60 V ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 369 40 V ÁÁÁÁÁÁ ÁÁÁÁÁÁ 750 0 V3 ÁÁÁÁ ÁÁÁÁ 60 Hz ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 0 7 40 counts ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 740 7 V ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 759 3V 1 Verify the proper DMM range 5 display digits use the manual range if necessary The 750 V range displays 4 digits 2 The upper display readout is 2 counts corresponding to the input frequency 3 750 V range not s...

Page 102: ...ipment needed to make the adjustments Instructions on how to prepare the instrument for adjustment Step by step adjustment procedures The procedures in this section do not verify performance To confirm that your multimeter meets factory specifications perform the procedures in the Perfor mance Verification section List of Adjustments Use the adjustments listed in Table 9 to return DMM800 Series mu...

Page 103: ...g without reading the entire adjustment procedure first H Do not alter a setting unless a performance characteristic cannot be met at the current setting H Read the Safety Summary at the beginning of this manual You must open the multimeter case to access the internal adjustments Use the following procedure to open the case 1 Lay the meter face down on a flat work surface that cannot damage the mu...

Page 104: ...DMM800 Series Adjustment Procedures 34 Handheld and Benchtop Instruments Basic Service Case top Case bottom Twist Remove screws 3 Figure 2 Opening the Meter Case ...

Page 105: ...VR 4 DMM850 and DMM870 Case top Figure 3 Adjustment locations 1 Perform the following steps to adjust the DC voltage calibration 1 Set the multimeter dial to V 2 Set the calibrator to output 3 0000 VDC 3 Connect the outputs of the calibrator to the _C V W and COM input connectors of the multimeter 4 Adjust VR5 until the display shows 2 9999 to 3 0001 VDC 5 Turn the calibrator output off 6 Disconne...

Page 106: ...fset a Using Fluke 5500A or Wavetek 9100 minus the 9105 front porch H Set the calibrator output to OFF H Connect the test leads to the multimeter _C V W and COM inputs H Connect the multimeter COM lead to the calibrator common output H Press the multimeter gold key followed by the D key H Connect the multimeter _C V W lead to the remaining calibrator output H Set the calibrator output to ON b Usin...

Page 107: ... calibrator output to the ATK01 thermocouple adapter 5 Allow five minutes of settling time for a stable reading 6 Adjust VR4 until the display shows 18 5_ to 18 7 _C 7 Turn the calibrator output off 8 Disconnect the calibrator from the multimeter Perform the following steps to adjust the DC milliamperes calibration 1 Set the multimeter dial to mA 2 Connect the outputs of the calibrator to the mA m...

Page 108: ... button and wait for the calibration to finish CAL is displayed during the calibration After the calibration is completed press EXIT SETUP blue button 6 Turn the calibrator output off 7 Disconnect the calibrator from the multimeter Adjustments Part 2 To perform the following procedure you must lift out the entire circuit board assembly from the top case half to access the adjustments Perform this ...

Page 109: ...librator to output 20 VAC at 10 kHz sinewave 11 Adjust VC1 until the display shows 19 700 V 12 Set the calibrator frequency to 500 Hz sinewave 13 Confirm that the reading is less than 20 110 V Repeat step 11 if necessary 14 Set the calibrator to output 2 VAC at 10 kHz sinewave 15 Adjust VC2 until the display shows 1 9700 V 16 Set the calibrator frequency to 500 Hz sinewave 17 Confirm that the read...

Page 110: ...DMM800 Series Adjustment Procedures 40 Handheld and Benchtop Instruments Basic Service ...

Page 111: ...Instructions Manual DMM912 914 and 916 Digital Multimeters 070 9851 00 ...

Page 112: ...s 3 Performance Verification 8 Test Equipment 9 Set Up 10 Verification Procedure 11 DMM912 Test Records 18 DMM914 Test Records 22 DMM916 Test Records 27 Adjustment Procedures 32 List of Adjustments 32 Test Equipment 33 Preparation for Adjustment 33 Adjustments Part 1 35 Adjustments Part 2 38 Reassembling the Multimeter 39 ...

Page 113: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 114: ...able 1 lists the features of each meter for easy comparison Figure 1 DMM916 Digital Multimeter Table 1 DMM91X Series Digital Multimeter Features Feature DMM912 DMM914 DMM916 40 000 display count D D D Bargraph D D D Centering and zooming D D True RMS or average AC measurements D D D Autorange D D D Measurements DC AC voltage D D D AC DC voltage D D D DC AC current D D D ...

Page 115: ...Frequency D D D Diodes and capacitors D D D Continuity D D D Duty factor D D Temperature D D Decibel D AC volts and amps with Hz display D D Measurement hold D D D Peak hold D Minimum maximum and average values D D D M M A time stamp D D Delta mode D D D HI LO limits D D Memory store and recall D D D Backlight D Automatic fuse verification D D D Improper input connection warning D D D ...

Page 116: ...Display count 40 000 or 4 000 Numeric update rate 1 time sec 40 000 count 4 times sec 4 000 count Bargraph 20 times sec Polarity display Automatic Overrange display OL is displayed Low voltage indicator Battery indicator Automatic power off time User selectable default 15 minutes Power source One 9 V dry cell battery Maximum input voltage 1000 V 750 V AC CAT II between V and COM Maximum floating v...

Page 117: ...z2 3 5 Bandwidth DMM912 DMM914 DMM916 1 kHz 10 kHz 20 kHz Crest factor 3 Input impedance 10 MW paralleled by 100 pF AC DC volts Same as AC RMS 1 2 10 counts3 dBm dB dBm reference 1 mV into 600 W dB reference 1 V Current AC and DC ranges 4 000 mA 400 mA 10 A 20 A maximum for 30 seconds DC accuracy 10 counts 1 DMM912 DMM914 DMM916 0 5 0 4 0 3 AC accuracy 80 counts 1 1 2 0 9 0 9 Bandwidth typical 1 k...

Page 118: ... 10 count 4 nF to 4 mF 1 delta mode 40 mF to 40 mF 3 Frequency4 Ranges 400 Hz 4 kHz 40 kHz 400 kHz 2 MHz Accuracy6 10 count 400 Hz to 400 kHz 0 01 2 MHz 0 15 Sensitivity 0 5 Vp p Duty factor Accuracy 0 1 0 05 per kHz for 5 V input Range 15 Hz to 10 kHz 10 to 90 duty factor Temperature Range 50_ to 980_ C Accuracy 2_ C Thermocouple type K Peak measurements3 Accuracy DC volts 5 40 counts of the peak...

Page 119: ...500 Hz 3 axes 10 minutes each Nonoperating 3 48 gRMS 5 to 500 Hz 3 axes 10 minutes each Table 6 Certifications and Compliances Characteristic Description EC Declaration of Conformity Meets the intent of Directive 89 336 EEC for Electromagnetic Compatibility and Low Voltage Directive 73 23 ECC for Product Safety Compliance was demonstrated to the following specifications as listed in the official J...

Page 120: ...teristic Description Overvoltage category CAT III Distribution level mains fixed installation CAT II Local level mains appliances portable equipment CAT I Signal level special equipment or parts of equipment telecommunication electronics Pollution Degree 2 Do not operate in environments where conductive pollutants may be present ...

Page 121: ...humidity of less than 75 H The multimeter stabilizes in the stated ambient temperature for one hour H The multimeter warms up for five minutes H For AC measurements allow the multimeter to settle to its final value before taking the measurement H The multimeter remains fully assembled and in the holster The DMM91X Series performance verification consists of the checks listed in Table 7 Table 7 Per...

Page 122: ...Before beginning the performance verification procedures warm up the test equipment according to the manufacturer s recommendations Table 8 Test Equipment Description Minimum Requirements Example Product ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ Universal Calibration System ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ Resolution accuracy 4 times greater than the multimeter display reading ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ...

Page 123: ...warm up period and throughout the entire verification procedure Set the auto power off time to a large value or disable the auto power off by pushing the Blue button when turning the dial from the OFF position 3 Warm up the multimeter for five minutes 4 Set the Digits to the 40 000 counts display 5 Pages 18 through 31 contain Test Records for the DMM91X series multime ters Each model has its own t...

Page 124: ...e calibrator from the multimeter Perform the following steps to verify the DC volts measurement accuracy 1 Set the multimeter dial to V 2 Connect the calibrator outputs to the multimeter _C V W and COM input connectors 3 Set the calibrator to each of the values in the DC Volts Test record and verify that the multimeter reads within the specified Display Minimum and Maximum limits 4 Set the calibra...

Page 125: ...nt accuracy 1 Set the multimeter dial to Hz 2 Connect the calibrator outputs to the multimeter _C V W and COM input connectors 3 Set the calibrator to each of the values in the Frequency Test record and verify that the multimeter reads within the specified Display Minimum and Maximum limits 4 Set the calibrator output to OFF 5 Disconnect the calibrator from the multimeter Perform the following ste...

Page 126: ...ent accuracy in LV mode 1 Set the multimeter dial to W 2 Push the BLUE button to select the LV mode 3 Connect the calibrator outputs to the multimeter _C V W and COM input connectors 4 Set the calibrator to each of the values in the Low Voltage W Test record and verify that the multimeter reads within the specified Display Minimum and Maximum limits 5 Set the calibrator output to OFF 6 Disconnect ...

Page 127: ...alibrator output to OFF 6 Disconnect the calibrator from the multimeter Perform the following steps to verify the capacitance measurement accuracy 1 Set the multimeter dial to 2 Set the noise suppression to 60 Hz a Press the DMM SETUP key repeatedly until the upper display reads 5060 b Set the main display to 60 Hz with the and keys 3 Null the residual DMM and lead capacitance offset a Using Fluke...

Page 128: ...verify the temperature measurement accuracy 1 Set the multimeter dial to _C _F 2 Connect the ATK01 thermocouple adapter to the multimeter _C V W and COM input connectors 3 Connect the Standard thermocouple K type of the calibrator to the ATK01 thermocouple adapter 4 Allow five minutes for the connector temperature to stabilize 5 Set the calibrator to each of the values in the Temperature Test reco...

Page 129: ...F 5 Disconnect the calibrator from the multimeter Perform the following steps to verify the AC milliampere measurement accuracy 1 Set the multimeter dial to mA 2 Push the BLUE button to select AC mode 3 Connect the calibrator outputs to the multimeter mA mA and COM input connectors 4 Set the calibrator to each of the values in the AC Milliampere Test record and verify that the multimeter reads wit...

Page 130: ...urement accuracy 1 Set the multimeter dial to A 2 Push the BLUE button to select AC mode 3 Connect the calibrator outputs to the multimeter A and COM input connectors 4 Set the calibrator to each of the values in the AC Ampere Test record and verify that the multimeter reads within the specified Display Minimum and Maximum limits 5 Set the calibrator output to OFF 6 Disconnect the calibrator from ...

Page 134: ...ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 3619 0 mA ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ 36 00 mA ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 0 5 10 counts ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 35 72 mA ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 36 28 mA ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ 360 00 mA ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 0 5 10 counts ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 358 10 mA ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 361 90 mA AC Milliampere Test 60 Hz ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ 3600 0 mA ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 1 2 80 counts ÁÁÁÁÁ...

Page 138: ...rd if instability occurs 2 Set the DMM to Delta mode Delta mode removes stray capacitance for low capacitance measurements 3 Set the DMM noise suppression to 60 Hz with the SETUP mode See Page 14 for detailed instructions Temperature Test ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ 0 0_ C ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 2_ C ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 2 0 ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 2 0 ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ 40 0_ C ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 2_ C ÁÁÁÁÁÁ...

Page 140: ...ÁÁ 350 60 V ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 369 40 V ÁÁÁÁÁÁ ÁÁÁÁÁÁ 750 0 V3 ÁÁÁÁ ÁÁÁÁ 60 Hz ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 0 7 40 counts ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ 740 7 V ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ 759 3V 1 Verify the proper DMM range 5 display digits use the manual range if necessary The 750 V range displays 4 digits 2 The upper display readout is 2 counts corresponding to the input frequency 3 750 V range not s...

Page 145: ...ipment needed to make the adjustments Instructions on how to prepare the instrument for adjustment Step by step adjustment procedures The procedures in this section do not verify performance To confirm that your multimeter meets factory specifications perform the procedures in the Perfor mance Verification section List of Adjustments Use the adjustments listed in Table 9 to return DMM91X Series mu...

Page 146: ...g without reading the entire adjustment procedure first H Do not alter a setting unless a performance characteristic cannot be met at the current setting H Read the Safety Summary at the beginning of this manual You must open the multimeter case to access the internal adjustments Use the following procedure to open the case 1 Lay the meter face down on a flat work surface that cannot damage the mu...

Page 147: ...DMM91X Series Adjustment Procedures 34 Handheld and Benchtop Instruments Basic Service Case top Case bottom Twist Remove screws 3 Figure 2 Opening the Meter Case ...

Page 148: ...VR 4 DMM914 and DMM916 Case top Figure 3 Adjustment locations 1 Perform the following steps to adjust the DC voltage calibration 1 Set the multimeter dial to V 2 Set the calibrator to output 3 0000 VDC 3 Connect the outputs of the calibrator to the _C V W and COM input connectors of the multimeter 4 Adjust VR5 until the display shows 2 9999 to 3 0001 VDC 5 Turn the calibrator output off 6 Disconne...

Page 149: ...fset a Using Fluke 5500A or Wavetek 9100 minus the 9105 front porch H Set the calibrator output to OFF H Connect the test leads to the multimeter _C V W and COM inputs H Connect the multimeter COM lead to the calibrator common output H Press the multimeter gold key followed by the D key H Connect the multimeter _C V W lead to the remaining calibrator output H Set the calibrator output to ON b Usin...

Page 150: ... calibrator output to the ATK01 thermocouple adapter 5 Allow five minutes of settling time for a stable reading 6 Adjust VR4 until the display shows 18 5_ to 18 7 _C 7 Turn the calibrator output off 8 Disconnect the calibrator from the multimeter Perform the following steps to adjust the DC milliamperes calibration 1 Set the multimeter dial to mA 2 Connect the outputs of the calibrator to the mA m...

Page 151: ... button and wait for the calibration to finish CAL is displayed during the calibration After the calibration is completed press EXIT SETUP blue button 6 Turn the calibrator output off 7 Disconnect the calibrator from the multimeter Adjustments Part 2 To perform the following procedure you must lift out the entire circuit board assembly from the top case half to access the adjustments Perform this ...

Page 152: ...librator to output 20 VAC at 10 kHz sinewave 11 Adjust VC1 until the display shows 19 700 V 12 Set the calibrator frequency to 500 Hz sinewave 13 Confirm that the reading is less than 20 110 V Repeat step 11 if necessary 14 Set the calibrator to output 2 VAC at 10 kHz sinewave 15 Adjust VC2 until the display shows 1 9700 V 16 Set the calibrator frequency to 500 Hz sinewave 17 Confirm that the read...

Page 153: ...DMM91X Series Adjustment Procedures 40 Handheld and Benchtop Instruments Basic Service ...

Page 154: ...Instructions Manual DTM500 Series Digital Thermometers 070 9852 00 ...

Page 155: ...ers 1 Specifications 2 Performance Verification 5 Test Equipment 5 Set Up 6 Verification Procedure 6 DTM510 Test Record 7 DTM520 Test Record 8 Adjustment Procedures 10 List of Adjustments 10 Test Equipment 10 Preparation for Adjustment 11 DTM510 Adjustment Procedure 13 DTM520 Adjustment Procedure 15 ...

Page 156: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 157: ...tandard with both instruments The DTM510 thermometer uses a single K type probe the DTM520 uses K or J type probes The DTM520 thermometer has inputs for two probes and can perform differential measurements In addition the thermometers include the following features H Temperature display in _C or _F H A hold feature to freeze the display H MIN and MAX readouts DTM510 thermometer includes MAX only H...

Page 158: ...ience of the user Specifications marked with the n symbol are checked in the performance verification procedures Table 1 General Characteristics Characteristic Description Product Measurement Range DTM510 50_ to 1300_ C 58_ to 1999_ F DTM520 K type probe 200_ to 1370_ C 328_ to 2498_ F DTM520 J type probe 200_ to 760_ C 328_ to 1400_ F nAccuracy Temperature Range Resolution of Reading DTM510 50_ t...

Page 159: ...TM520 J type probe 200_ to 100_ C 0 1_ C 0 3 1 1_ C 328_ to 148_ F 0 2_ F 0 3 2 2_ F 99 9_ to 760_ C 0 1_ C 0 1 0 8_ C 147 9_ to 999 9_ F 0 2_ F 0 1 1 6_ F 1000_ to 1400_ F 2_ F 0 3 2_ F Table 2 General Characteristics Characteristic Description Temperature Range ATP01 bead probe 40_ to 204_ C Probe Tolerance ATP01 bead probe 2 2_ C Measurement Rate Readings second DTM510 2 5 DTM520 T2 or T1 1 DTM...

Page 160: ...coefficient 18_ C or 28_ C DTM510 0 15 specified accuracy per _C DTM520 0 1 specified accuracy per _C Operating temperature 0_ to 50_ C 32_ to 122_ F at 0 to 75 RH Storage temperature 20_ to 60_ C 4_ to 140_ F at 0 to 80 RH Power requirements Single standard 9 V battery NEDA 1604 JIS 006P IEC 6F22 size Battery life Alkaline DTM510 250 hours DTM520 90 hours ...

Page 161: ...p for 60 minutes H The instrument remains fully assembled do not remove the bottom cover Test Equipment The performance verification procedures use external traceable test equipment to directly check warranted characteristics If you substitute equipment always choose instruments that meet or exceed the minimum requirements specified in Table 4 Alternative test equipment must meet or exceed the int...

Page 162: ...r to the T1 input connector then repeat the test using the T2 input connector NOTE Thermocouple connectors are temperature sensitive For best measure ment accuracy do not touch the connector contacts and minimize handling of the connector housings 2 Set the simulator to the correct probe type The DTM510 thermometer uses a K type probe The DTM520 thermometer can use either a K or J type probe 3 For...

Page 163: ... 31 1_ 28 9_ 0 0_ C 01 0_ 01 0_ 30 0_ C 28 9_ 31 1_ 50 0_ C 48 9_ 51 1_ 100 0_ C 98 8_ 101 2_ 50 0_ F 52 1_ 47 9_ 22 0_ F 24 0_ 20 0_ 0 0_ F 02 0_ 02 0_ 190 0_ F 187 6_ 192 4_ 1 0_ 48_ C 050_ 046_ 0_ C 002_ 002_ 50_ C 048_ 052_ 200_ C 197_ 203_ 310_ C 307_ 313_ 700_ C 695_ 705_ 810_ C 805_ 815_ 945_ C 939_ 951_ 1280_ C 1270_ 1290_ 50_ F 054_ 046_ 0_ F 004_ 004_ 590_ F 584_ 596_ 1292_ F 1283_ 1301_...

Page 164: ...e Type Temperature Low Limit Test Result High Limit K 198 0_ C 199 6_ 196 4_ 99 0_ C 99 8_ 98 2_ 0 0_ C 0 7_ 0 7_ 50 0_ C 49 2_ 50 8_ 500 0_ C 498 8_ 501 2_ 998 0_ C 996 3_ 999 7_ 1360_ C 1355_ 1365_ 320_ F 323_ 317_ 146_ F 147 5_ 144 5_ 0 0_ F 1 4_ 1 4_ 100_ F 98 5_ 101 5_ 500_ F 498 1_ 501 9_ 990_ F 987 6_ 992 4_ 1980_ F 1972_ 1988_ 2480_ F 2471_ 2489_ ...

Page 165: ...e Low limit Test result High limit J 198 0_ C 199 7_ 196 3_ 99 0_ C 99 9_ 98 1_ 0 0_ C 0 8_ 0 8_ 50 0_ C 49 1_ 50 9_ 100 0_ C 99 1_ 100 9_ 500 0_ C 498 7_ 501 3_ 755 0_ C 753 4_ 756 6_ 320 0_ F 323 2_ 316 8_ 146 0_ F 147 7_ 144 3_ 0 0_ F 1 6_ 1 6_ 100 0_ F 98 3_ 101 7_ 500 0_ F 497 9_ 502 1_ 990 0_ F 987 4_ 992 6_ 1390_ F 1384_ 1396_ ...

Page 166: ...performance To confirm that your thermometer meets factory specifications implement the procedures in the Performance Verification section List of Adjustments Use the adjustments listed in Table 5 to return DTM510 and DTM520 thermom eters to factory calibration Table 5 DTM510 and DTM520 Adjustments DTM510 Adjustment Procedure DTM520 Adjustment Procedure 2000 mV Calibration Gain Calibration 0_ C Ca...

Page 167: ...ors Omega TECK 10 10 Transition Adapter DTM520 SMP female to male banana Omega TAS U 5 Preparation for Adjustment The following guidelines apply to all DTM510 and DTM520 adjustments H Perform all adjustments in a 21_ to 25_ C ambient environment with a relative humidity of 75 or less H Warm up the thermometer for at least 30 minutes H Do not alter any setting without reading the entire adjustment ...

Page 168: ...tment cover 4 Remove the four screws from the corners of the thermometer 5 Lift the top end of the cover and remove both the cover and the cap 6 Remove the screws from the corners of the circuit board the DTM510 thermometer has three screws the DTM520 thermometer has four and gently lift the circuit board out of the case 7 Remove the rubber keypad from the case 8 Lay the circuit board face up 9 Pl...

Page 169: ...e simulator to the probe connector 4 Set the simulator probe type to K 5 For each row in Table 7 set the thermometer and simulator as shown then adjust the specified test point until the displayed temperature is within the proper limits Figure 2 shows the location of the adjustment points Table 7 DTM510 Adjustment Procedures Thermometer Setting Simulator Setting C F Resolution Temperature Test Poi...

Page 170: ...DTM500 Series Adjustment Procedures 14 Handheld and Benchtop Instruments Basic Service VR4 VR5 VR2 VR3 VR1 Front Figure 2 DTM510 Thermometer Disassembly and Adjustment Locations ...

Page 171: ...oltage source to the T1 probe connector The composition of both lead wires should be identical 4 Set the DC voltage source output to 2000 0 mV 0 01 5 Adjust VR2 until the display shows 2000 0_ The first digit of the temperature appears at the upper right hand corner of the display 6 Disconnect the DC voltage source 7 Remove the R25 jumper Do not remove the JP1 jumper Use the following procedure to...

Page 172: ... simulator to the T1 probe connector 2 Set the thermocouple simulator and thermometer probe types to K 3 Set the thermocouple simulator to 0_ C 4 Adjust VR1 until displayed temperature is between 00 1_ and 00 1_ 5 Disconnect the thermocouple simulator VR1 R25 VR3 VR2 JP1 Front Figure 3 DTM520 Thermometer Disassembly Test Points and Adjustment Locations 0_ C Calibration ...

Page 173: ...Instructions Manual DTM900 and DTM920 Digital Thermometers 070 9853 00 ...

Page 174: ...eters 1 Specifications 2 Performance Verification 5 Test Equipment 5 Set Up 6 Verification Procedure 6 DTM900 Test Record 7 DTM920 Test Record 8 Adjustment Procedures 10 List of Adjustments 10 Test Equipment 10 Preparation for Adjustment 11 DTM900 Adjustment Procedure 13 DTM920 Adjustment Procedure 15 ...

Page 175: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 176: ... standard with both instruments The DTM900 thermometer uses a single K type probe the DTM920 uses K or J type probes The DTM920 thermometer has inputs for two probes and can perform differential measurements In addition the thermometers include the following features H Temperature display in _C or _F H A hold feature to freeze the display H MIN and MAX readouts DTM900 thermometer includes MAX only...

Page 177: ...enience of the user Specifications marked with the n symbol are checked in the performance verification procedures Table 1 General Characteristics Characteristic Description Product Measurement Range DTM900 50_ to 1300_ C 58_ to 1999_ F DTM920 K type probe 200_ to 1370_ C 328_ to 2498_ F DTM920 J type probe 200_ to 760_ C 328_ to 1400_ F nAccuracy Temperature Range Resolution of Reading DTM900 50_...

Page 178: ... DTM920 J type probe 200_ to 100_ C 0 1_ C 0 3 1 1_ C 328_ to 148_ F 0 2_ F 0 3 2 2_ F 99 9_ to 760_ C 0 1_ C 0 1 0 8_ C 147 9_ to 999 9_ F 0 2_ F 0 1 1 6_ F 1000_ to 1400_ F 2_ F 0 3 2_ F Table 2 General Characteristics Characteristic Description Temperature Range ATP01 bead probe 40_ to 204_ C Probe Tolerance ATP01 bead probe 2 2_ C Measurement Rate Readings second DTM900 2 5 DTM920 T2 or T1 1 D...

Page 179: ...e coefficient 18_ C or 28_ C DTM900 0 15 specified accuracy per _C DTM920 0 1 specified accuracy per _C Operating temperature 0_ to 50_ C 32_ to 122_ F at 0 to 75 RH Storage temperature 20_ to 60_ C 4_ to 140_ F at 0 to 80 RH Power requirements Single standard 9 V battery NEDA 1604 JIS 006P IEC 6F22 size Battery life Alkaline DTM900 250 hours DTM920 90 hours ...

Page 180: ... up for 60 minutes H The instrument remains fully assembled do not remove the bottom cover Test Equipment The performance verification procedures use external traceable test equipment to directly check warranted characteristics If you substitute equipment always choose instruments that meet or exceed the minimum requirements specified in Table 4 Alternative test equipment must meet or exceed the i...

Page 181: ...tor to the T1 input connector then repeat the test using the T2 input connector NOTE Thermocouple connectors are temperature sensitive For best measure ment accuracy do not touch the connector contacts and minimize handling of the connector housings 2 Set the simulator to the correct probe type The DTM900 thermometer uses a K type probe The DTM920 thermometer can use either a K or J type probe 3 F...

Page 182: ... C 31 1_ 28 9_ 0 0_ C 01 0_ 01 0_ 30 0_ C 28 9_ 31 1_ 50 0_ C 48 9_ 51 1_ 100 0_ C 98 8_ 101 2_ 50 0_ F 52 1_ 47 9_ 22 0_ F 24 0_ 20 0_ 0 0_ F 02 0_ 02 0_ 190 0_ F 187 6_ 192 4_ 1 0_ 48_ C 050_ 046_ 0_ C 002_ 002_ 50_ C 048_ 052_ 200_ C 197_ 203_ 310_ C 307_ 313_ 700_ C 695_ 705_ 810_ C 805_ 815_ 945_ C 939_ 951_ 1280_ C 1270_ 1290_ 50_ F 054_ 046_ 0_ F 004_ 004_ 590_ F 584_ 596_ 1292_ F 1283_ 130...

Page 183: ...obe Type Temperature Low Limit Test Result High Limit K 198 0_ C 199 6_ 196 4_ 99 0_ C 99 8_ 98 2_ 0 0_ C 0 7_ 0 7_ 50 0_ C 49 2_ 50 8_ 500 0_ C 498 8_ 501 2_ 998 0_ C 996 3_ 999 7_ 1360_ C 1355_ 1365_ 320_ F 323_ 317_ 146_ F 147 5_ 144 5_ 0 0_ F 1 4_ 1 4_ 100_ F 98 5_ 101 5_ 500_ F 498 1_ 501 9_ 990_ F 987 6_ 992 4_ 1980_ F 1972_ 1988_ 2480_ F 2471_ 2489_ ...

Page 184: ...ure Low limit Test result High limit J 198 0_ C 199 7_ 196 3_ 99 0_ C 99 9_ 98 1_ 0 0_ C 0 8_ 0 8_ 50 0_ C 49 1_ 50 9_ 100 0_ C 99 1_ 100 9_ 500 0_ C 498 7_ 501 3_ 755 0_ C 753 4_ 756 6_ 320 0_ F 323 2_ 316 8_ 146 0_ F 147 7_ 144 3_ 0 0_ F 1 6_ 1 6_ 100 0_ F 98 3_ 101 7_ 500 0_ F 497 9_ 502 1_ 990 0_ F 987 4_ 992 6_ 1390_ F 1384_ 1396_ ...

Page 185: ...y performance To confirm that your thermometer meets factory specifications implement the procedures in the Performance Verification section List of Adjustments Use the adjustments listed in Table 5 to return DTM900 and DTM920 thermom eters to factory calibration Table 5 DTM900 and DTM920 Adjustments DTM900 Adjustment Procedure DTM920 Adjustment Procedure 2000 mV Calibration Gain Calibration 0_ C ...

Page 186: ...ctors Omega TECK 10 10 Transition Adapter DTM920 SMP female to male banana Omega TAS U 5 Preparation for Adjustment The following guidelines apply to all DTM900 and DTM920 adjustments H Perform all adjustments in a 21_ to 25_ C ambient environment with a relative humidity of 75 or less H Warm up the thermometer for at least 30 minutes H Do not alter any setting without reading the entire adjustmen...

Page 187: ...artment cover 4 Remove the four screws from the corners of the thermometer 5 Lift the top end of the cover and remove both the cover and the cap 6 Remove the screws from the corners of the circuit board the DTM900 thermometer has three screws the DTM920 thermometer has four and gently lift the circuit board out of the case 7 Remove the rubber keypad from the case 8 Lay the circuit board face up 9 ...

Page 188: ...ple simulator to the probe connector 4 Set the simulator probe type to K 5 For each row in Table 7 set the thermometer and simulator as shown then adjust the specified test point until the displayed temperature is within the proper limits Figure 2 shows the location of the adjustment points Table 7 DTM900 Adjustment Procedures Thermometer Setting Simulator Setting C F Resolution Temperature Test P...

Page 189: ...DTM900 and DTM920 Adjustment Procedures 14 Handheld and Benchtop Instruments Basic Service VR4 VR5 VR2 VR3 VR1 Front Figure 2 DTM900 Thermometer Disassembly and Adjustment Locations ...

Page 190: ... voltage source to the T1 probe connector The composition of both lead wires should be identical 4 Set the DC voltage source output to 2000 0 mV 0 01 5 Adjust VR2 until the display shows 2000 0_ The first digit of the temperature appears at the upper right hand corner of the display 6 Disconnect the DC voltage source 7 Remove the R25 jumper Do not remove the JP1 jumper Use the following procedure ...

Page 191: ...le simulator to the T1 probe connector 2 Set the thermocouple simulator and thermometer probe types to K 3 Set the thermocouple simulator to 0_ C 4 Adjust VR1 until displayed temperature is between 00 1_ and 00 1_ 5 Disconnect the thermocouple simulator VR1 R25 VR3 VR2 JP1 Front Figure 3 DTM920 Thermometer Disassembly Test Points and Adjustment Locations 0_ C Calibration ...

Page 192: ...Instructions Manual PS280 and PS283 Power Supplies 070 9894 00 ...

Page 193: ...nt 6 Constant Current Load Regulation Check 7 Constant Current Ripple and Noise Check 9 Constant Voltage Regulation Check 11 Adjustment Procedures 13 List of Adjustments 13 Test Equipment 14 Preparation for Adjustment 14 Independent Mode Adjustments 17 Series Tracking Mode Adjustments 19 Parallel Tracking Mode Adjustments 20 5 V Fixed Output Adjustments 21 ...

Page 194: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 195: ... in this manual apply to both instruments The front panel switches provide three modes of operation for the PS280 and PS283 power supplies Independent mode the output voltage and current of each supply is controlled independently Series mode the variable outputs are connected in series and the controls of the MASTER power supply adjust the voltages or currents of both supplies Series mode allows t...

Page 196: ...re not guaranteed but are provided for the convenience of the user Table 1 Operational Characteristics Characteristic Description Outputs One fixed 5 VDC two variable 0 to 30 VDC Voltage 5 V Fixed Supply 5 0 VDC 0 25 VDC at 3 0 A maximum foldback current limited Voltage 0 to 30 V Supplies PS280 0 to 30 VDC constant at 2 0 A constant maximum PS283 0 to 30 VDC constant at 1 0 A constant maximum Line...

Page 197: ...5 inch LED panel displays Meter indicators 0 to 30 VDC 0 5 of RDG 2 digits 0 to 2 A 0 5 of RDG 2 digits Insulation Chassis to terminals 20 MW at 500 VDC Chassis to AC cord 30 MW at 500 VDC Table 2 Electrical Characteristics Characteristic Description Line Voltage 90 to 110 108 to 132 198 to 242 and 216 to 250 VAC Line Frequency 50 to 60 Hz Power Consumption PS280 348 VA 250 W maximum PS282 254 VA ...

Page 198: ... 4 Handheld and Benchtop Instruments Basic Service Table 4 Physical Characteristics Characteristic Description Width 255 mm 10 04 inch Height 145 mm 5 71 inch Depth 335 mm 13 19 inch Weight PS280 11 5 kg 25 3 lb PS283 9 0 kg 19 8 lb ...

Page 199: ...ns H The instrument operates in a 20_ to 30_ C 68_ to 104_ F ambient environment H The instrument warms up for at least 20 minutes before the verification begins H The cabinet remains installed on the instrument The PS280 and PS283 performance verification consists of the checks listed in Table 5 Table 5 Performance Verification Checks Constant Current Load Regulation Check MASTER Current Regulati...

Page 200: ...ay need to modify the performance verification procedures NOTE Before beginning the performance verification procedures warm up the test equipment according to the manufacturer s recommendations Table 6 Performance Verification and Adjustment Test Equipment Description Minimum Requirements Example Product Oscilloscope 50 MHz 3 vertical deflection accuracy Tektronix TDS300 Series Oscilloscope Digit...

Page 201: ...switch to AMPS 3 Set up the digital multimeter to measure 25 VDC 4 Connect the digital multimeter to the and terminals of the power supply MASTER output 5 Adjust the power supply MASTER VOLTAGE control until the multimeter reads 25 VDC 6 Disconnect the digital multimeter from the power supply 7 Set the digital multimeter to measure a DC current of at least 1 A PS280 or 0 5 A PS283 8 Connect the di...

Page 202: ...ent of at least 1 A PS280 or 0 5 A PS283 7 Connect the digital multimeter and load resistors to the and terminals of the power supply SLAVE output as shown in Figure 2 See Table 7 for the appropriate load resistor values 8 Verify that the power supply output current varies less than 0 2 3 mA while shunting load resistor RL1 with the shorting strap See Figure 2 above The following check verifies th...

Page 203: ...ck the constant current ripple and noise performance of your power supply perform the following tests Power supply Test oscilloscope RS RL Figure 3 Constant Current Ripple and Noise Test Setup The following check verifies the MASTER current ripple 1 Set the power supply to the INDEP operating mode by disengaging both TRACKING switches both switches out 2 Set the power supply MASTER AMPS VOLTS mete...

Page 204: ...r Values for Ripple Checks de PS280 PS283 Mode RL RS RL RS INDEP 15 W 70 W 0 5 W 5 W 30 W 40 W 0 5 W 5 W PARALLEL 7 W 140 W 10 W 30 W 15 W 70 W 0 5 W 5 W The following check verifies the SLAVE current ripple 1 Set the power supply to INDEP operating mode by disengaging both TRACKING switches both switches out 2 Set the power supply SLAVE AMPS VOLTS meter switch to VOLTS 3 Set the power supply to 2...

Page 205: ...eter to measure 60 VDC 3 Connect the digital multimeter and load resistors to the and terminals of the power supply MASTER output as shown in Figure 4 See Table 9 for the appropriate load resistor values 4 Verify that you can adjust the power supply from 0 to 30 V 5 Set the power supply to the SERIES operating mode by engaging the left TRACKING mode switch switch in and disengaging the right TRACK...

Page 206: ...ltimeter to measure 30 VDC 3 Connect the digital multimeter and load resistors to the and terminals of the SLAVE output as shown in Figure 4 See Table 9 for the appropriate load resistor values 4 Verify that you can adjust the power supply from 0 to 30 V The following check verifies the 5 V fixed voltage regulation performance 1 Set up the digital multimeter to measure 5 VDC 2 Connect the digital ...

Page 207: ...ments for adjustment Step by step adjustment procedures The procedures in this section do not verify performance To confirm that your power supply meets factory specifications implement the procedures in the Performance Verification section List of Adjustments Use the adjustments listed in Table 10 to return PS280 and PS283 power supplies to factory calibration Table 10 PS280 and PS283 Adjustments...

Page 208: ...nutes H Read the Safety Summary at the beginning of this manual H Do not alter any setting without reading the entire adjustment procedure first H Do not alter any setting unless a performance characteristic cannot be met at the current setting You must remove the instrument cover to make internal adjustments WARNING To avoid electrical shock disconnect the power cord from its source while removin...

Page 209: ...PS280 and PS283 Adjustment Procedures Handheld and Benchtop Instruments Basic Service 15 Figure 5 PS280 PS283 Instrument Cover Removal ...

Page 210: ...ents Basic Service Refer to Figure 6 to locate PS280 PS283 internal circuit boards Master Slave circuit board Front Panel controls circuit board Display Assembly circuit board 5 V circuit board Figure 6 PS280 PS283 Internal Circuit Board Locations Circuit Board Locations ...

Page 211: ... the PS280 PS283 MASTER VOLTAGE control to minimum fully counterclockwise 5 Connect the digital multimeter to the and terminals of the MASTER output 6 Adjust VR102 Master Slave circuit board for a reading of 15 mV within 15 mV on the multimeter 7 Set the digital multimeter to measure a DC voltage of 35 V 8 Set the MASTER VOLTAGE control to maximum fully clockwise 9 Adjust VR101 Master Slave circui...

Page 212: ... a DC voltage of 35 V 8 Set the SLAVE VOLTAGE control to maximum fully clockwise 9 Adjust VR301 Master Slave circuit board for a reading of 31 5 V on the multimeter 10 Adjust VR601 Display Assembly circuit board until the PS280 PS283 front panel display reads 31 5 V 11 Disconnect the digital multimeter from the power supply VR601 VR602 VR201 VR202 J1044 Figure 8 Display Assembly Circuit Board Adju...

Page 213: ...Mode Adjustments Refer to Figures 6 7 and 9 for the circuit board and adjustment locations used in this procedure To adjust the series tracking mode perform the following steps 1 Engage the left TRACKING mode switch switch in and disengage the right TRACKING mode switch switch out so that the power supply is in the SERIES operating mode 2 Set the SLAVE CURRENT control to midrange 3 Set the MASTER ...

Page 214: ... setup VR501 J3082 Figure 9 Front Panel Controls Circuit Board Adjustments Parallel Tracking Mode Adjustments Refer to Figures 6 and 7 for the circuit board and adjustment locations used in this procedure To adjust the PARALLEL tracking Mode perform the following steps 1 Disengage both TRACKING mode switches both switches out so that the power supply is in the INDEPendent operating mode 2 Set the ...

Page 215: ... board until a reading of 2 A PS283 or 4 A PS280 is displayed on the multimeter 9 Disconnect the test setup 5 V Fixed Output Adjustments Refer to Figures 6 and 10 for the circuit board and adjustment locations used in this procedure To adjust the 5 V fixed output perform the following steps 1 Set the digital multimeter to measure a DC voltage of 5 25 V 2 Connect the digital multimeter to the termi...

Page 216: ... V FIXED 3A output 6 Set the digital multimeter to measure a DC voltage of 5 25 V 7 Connect the digital multimeter to the terminals of the 5 V FIXED 3A output 8 Slowly adjust VR403 5 V circuit board clockwise until the multimeter display shows a voltage drop of 5 to 6 mV 9 Disconnect the test setup To adjust the current limit overload indicator perform the following steps 1 Set the digital multime...

Page 217: ...Instructions Manual PS2520 Series Power Supplies 070 9854 00 ...

Page 218: ...20 Series Power Supplies 1 Specifications 3 Performance Verification 7 Test Equipment 8 Set Up 8 PS2520 and PS2520G Checks 9 PS2521 and PS2521G Checks 32 Adjustment Procedures 55 List of Adjustments 55 Test Equipment 56 Preparation for Adjustment 56 Adjustment Procedure 58 ...

Page 219: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 220: ... outputs outputs may be configured for independent series or parallel operation Automatic series or parallel tracking Push button controls Keypad and up down key data entry Four digit display of voltage and current High resolution digital to analog converter Memory storage and recall Display readout of output memory and error codes Automatic sequencing with timer Self test diagnostic at power up O...

Page 221: ...with the following exceptions The PS2520 and PS2520G power supplies have two variable outputs providing 0 to 36 V at 0 to 1 5 A and one variable output providing 0 to 6 V at 0 to 3A The PS2521 and PS2521G power supplies have two variable outputs providing 0 to 20 V at 0 to 2 5 A and one variable output providing 0 to 6 V at 0 to 5 A The PS2520G and PS2521G include General Purpose Interface Bus GPI...

Page 222: ...ristic Description Independent Output Ratings PS2520 and PS2520G Two outputs 0 to 36 V at 0 to 1 5 A One output 0 to 6 V at 3 A PS2521 and PS2521G Two outputs 0 to 20 V at 0 to 2 5 A One output 0 to 6 V at 0 to 5 A Series Tracking Output Rating PS2520 and PS2520G 0 to 72 V at 0 to 1 5 A PS2521 and PS2521G 0 to 40 V at 0 to 2 5 A Parallel Tracking Output Rating PS2520 and PS2520G 0 to 36 V at 0 to ...

Page 223: ...g current 3 5 A Temperature Coefficient 0_ to 40_ C 32_ to 104_ F Voltage 100 ppm 3 mV Current 150 ppm 3 mA Readback Resolution Voltage 10 mV 20 mV if rating voltage 36 V Current 1 mA 2 mA if rating current 3 5 A Readback Accuracy Voltage 0 05 25 mV 50 mV if rating voltage 36 V Current 0 2 10 mA Response Time 10 to 90 up 100 ms 90 to10 down 100 ms 10 rating load Readback Temperature Coefficient Vo...

Page 224: ...ct Voltage 3 mV Current 6 mA GPIB Capability Optional IEEE 488 2 SH1 AH1 T6 L4 SR1 RL1 PP0 DC1 DT0 C0 E1 Memory Locations Store and Recall 00 to 49 50 locations Timer Setting Time 1 to 65535 seconds Resolution 1 second Table 2 Electrical Characteristics Characteristic Description Power Source 100 120 and 220 VAC 10 at 50 to 60 Hz 240 VAC 10 4 2 at 50 to 60 Hz Safety ETL listed to UL 1244 Certified...

Page 225: ...Specifications 6 Handheld and Benchtop Instruments Basic Service Table 4 Physical Characteristics Characteristic Description Width 255 mm 10 04 inch Height 145 mm 5 71 inch Depth 346 mm 13 62 inch Weight 10 kg 22 lbs ...

Page 226: ...cabinet remains installed on the instrument The PS2520 series performance verification consists of the checks listed in Table 5 Table 5 Performance Verification Checks Basic Function Voltage Set Accuracy Current Set Accuracy Overvoltage Protection OVP Accuracy Constant Voltage Load Accuracy Constant Voltage Source Accuracy Constant Voltage Ripple and Noise Accuracy Constant Current Load and Overcu...

Page 228: ...ng steps to verify OUTPUT 1 OUTPUT 2 and OUTPUT 3 basic function 1 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 2 Set up the power supply as follows VOLTS SET 10 V CURRENT SET 1 A OVP SET 38 V DELAY 3 s 3 Press SHIFT STORE 1 to store the above values in the memory 01 location Verify that the MEMORY CURRENT A and VOLTS readouts display the values listed in step 2 for memor...

Page 229: ...he voltage should decrease in 1 volt steps on the VOLTS readout 15 Press VOLTS and verify that as you attempt to increase the voltage past 37 00 V Err 016 appears on the readouts The voltage should increase in 1 volt steps on the VOLTS readout 16 Press STEP SET Set the CURRENT SET to 1 A 17 Press CURRENT and verify that as you attempt to decrease the current below 0 000 A Err 019 appears on the re...

Page 230: ... readouts The voltage should increase in 1 volt steps on the VOLTS readout 27 Press STEP SET Set the CURRENT SET to 1 A 28 Press CURRENT and verify that as you attempt to decrease the current below 0 000 A Err 019 appears on the readouts and the C C indicator lights The current should decrease in 1 ampere steps on the CURRENT A readout 29 Press CURRENT and verify that as you attempt to increase th...

Page 231: ...ator lights up on the display 2 Set up the power supply as follows VOLTS SET 36 V OVP SET 37 V 3 Press STEP SET Set the VOLTS SET to 0 05 V 4 Ensure that the power supply output is disabled Configure the DMM to measure 40 VDC across the front panel OUTPUT 1 2 terminals 5 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 6 Verify that the DMM reads between 35 950 and 36 050...

Page 232: ... terminals 5 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 6 Verify that the DMM reads between 5 972 and 6 028 VDC 7 Press VOLTS or VOLTS to adjust the power supply output voltage until the DMM reads 6 00 VDC 8 Verify that the power supply VOLTS readout indicates between 5 950 and 6 050 V 9 Press VOLTS SET Set the power supply output voltage to 0 1 V 10 Set the DMM to ...

Page 233: ... to measure 1 VDC across the power supply OUTPUT 2 and OUTPUT 1 terminals 12 Verify that the DMM reads between 0 1498 and 0 2500 VDC 13 Press OUTPUT ON OFF Verify that the OUT indicator turns off Parallel Operation Use the following steps to check the parallel mode accuracy 1 Press SHIFT OUT 2 verify that the 2 indicator lights up on the display 2 Set up the power supply as follows VOLTS SET 36 V ...

Page 234: ... OUTPUT 1 and OUTPUT 2 accuracy 1 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 2 Set up the power supply as follows VOLTS SET 10 V CURRENT SET 1 5 A OVP SET 11 V 3 Press STEP SET Set the CURRENT SET to 0 002 A 4 Ensure that the power supply output is disabled Configure the DMM to measure 2 amperes DC across the front panel OUTPUT 1 2 terminals 5 Press OUTPUT ON OFF Verify...

Page 235: ...cross the front panel OUTPUT 3 terminals 5 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 6 Verify that the DMM reads between 2 984 and 3 016 A 7 Press CURRENT or CURRENT to adjust the power supply output current until the DMM reads 3 000 A 8 Verify that the power supply CURRENT A readout indicates between 2 984 and 3 016 A 9 Press CURRENT SET Set the power supply outpu...

Page 236: ...utput current to 0 1 A 11 Verify that the DMM reads between 0 089 and 0 111 A 12 Press OUTPUT ON OFF Verify that the OUT indicator turns off 13 Press SHIFT PARA INDEP to reconfigure the outputs for independent operation Verify that the PARA indicator turns off 14 Disconnect the DMM from the power supply output terminals Complete the following procedures to verify OVP overvoltage protection accurac...

Page 237: ...ut accuracy 1 With the power supply still set to OUT 2 press SHIFT PARA INDEP to configure OUTPUT 1 and OUTPUT 2 for parallel operation Verify that the PARA indicator lights up on the display 2 Repeat steps 2 through 11 of the Outputs 1 and 2 procedure above 3 Press SHIFT PARA INDEP to reconfigure the outputs for independent operation Verify that the PARA indicator turns off Output 3 Use the follo...

Page 238: ...age load accuracy Outputs 1 and 2 Use the following steps to check the OUTPUT 1 and OUTPUT 2 accuracy 1 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to the front panel OUTPUT 1 terminals See Figure 2 for details Power supply Electronic load Digital multimeter 10 A COM Figure 2 Constant V...

Page 239: ...ls Maintain the equipment configuration and polarities shown in Figure 2 16 Repeat steps 4 through 10 above 17 Ensure that the power supply output is disabled Remove the leads from the front panel OUTPUT 2 terminals and connect them to the OUTPUT 2 terminals on the rear of the instrument Maintain the equipment configura tion and polarities shown in Figure 2 18 Repeat steps 5 through 8 above and ve...

Page 240: ...OUTPUT 1 and OUTPUT 2 for parallel operation Verify that the PARA indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to the front panel OUTPUT 2 terminals Maintain the equipment configuration and polarities shown in Figure 2 3 Set the DMM to measure 40 VDC 4 Set up the power supply as follows VOLTS SET 36 V CURRENT SET 3 1 A OVP...

Page 241: ...3 Set the DMM to measure 10 VDC 4 Set up the power supply as follows VOLTS SET 6 V CURRENT SET 3 1 A OVP SET 7 V 5 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 6 Enable the electronic load Adjust the load until the power supply CURRENT A readout indicates 3 000 A 7 Record the DMM voltage V1 8 Turn off the electronic load and record the DMM voltage again V2 9 Verify th...

Page 242: ...er 10 A COM Figure 3 Constant Voltage Source Test Setup 3 Set the DMM to measure 2 amperes DC 4 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 5 Set up the power supply as follows VOLTS SET 36 V CURRENT SET 1 55 A OVP SET 38 5 V 6 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 7 Enable the electronic load Adjust the load until the DMM current rea...

Page 243: ...3 3 Repeat steps 5 through 9 of the Outputs 1 and 2 procedure above Parallel Operation Use the following steps to check the parallel mode output accuracy 1 Keep the power supply set to OUT 2 Press SHIFT PARA INDEP to configure OUTPUT 1 and OUTPUT 2 for parallel operation Verify that the PARA indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and el...

Page 244: ...UT ON OFF Verify that the OUT indicator lights up on the display 5 Enable the electronic load Adjust the load until the DMM current reads 3 000 A 6 Adjust the output of the Variac from 108 to 132 VAC 120 V range or 198 to 242 VAC 220 V range Verify that the power supply VOLTS readout changes 0 003 V over the adjustment range 7 Press OUTPUT ON OFF Verify that the OUT indicator turns of then disable...

Page 245: ...e oscilloscope to LINE trigger source Adjust the output of the Variac from 108 to 132 VAC 120V range or 198 to 242 VAC 220V range Verify that the ripple changes 3 mVp p over the adjustment range 8 Press OUTPUT ON OFF Verify that the OUT indicator turns off 9 Press SHIFT OUT 2 verify that the 2 indicator lights up on the display 10 Ensure that the power supply output is disabled Remove the leads fr...

Page 246: ...stabilize before the next check Complete the following procedures to verify constant current load and overcur rent protection accuracy Outputs 1 and 2 Use the following steps to check the OUTPUT 1 and OUTPUT 2 accuracy 1 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to the front panel OUT...

Page 247: ...y 12 Record the DMM current reading again I2 13 Verify that the difference between I1 and I2 is 0 003 A 14 Press OUTPUT ON OFF Verify that the OUT indicator turns off 15 Press OCP ON OFF Verify that the OCP indicator lights up on the display 16 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 17 Verify that the power supply readouts display the error message Err 012 18 Pr...

Page 248: ...nt operation Verify that the PARA indicator turns off Output 3 Use the following steps to check the OUTPUT 3 accuracy 1 Press SHIFT OUT 3 verify that the 3 indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to the front panel OUTPUT 3 terminals Maintain the equipment configuration and polarities shown in Figure 5 3 Set up the po...

Page 249: ... the OUT indicator lights up on the display 7 Adjust the output of the Variac from 108 to 132 VAC 120V range or 198 to 242 VAC 220V range Verify that the DMM current variation is 0 003 A over the adjustment range 8 Press OUTPUT ON OFF Verify that the OUT indicator turns off 9 Press SHIFT OUT 2 verify that the 2 indicator lights up on the display 10 Ensure that the power supply output is disabled R...

Page 250: ...current variation is 0 006 A over the adjustment range 7 Press OUTPUT ON OFF Verify that the OUT indicator turns off 8 Press SHIFT PARA INDEP to reconfigure the outputs for independent operation Verify that the PARA indicator turns off Output 3 Use the following steps to check the OUTPUT 3 accuracy 1 Press SHIFT OUT 3 verify that the 3 indicator lights up on the display 2 Ensure that the power sup...

Page 251: ...n Outputs 1 2 and 3 Use the following steps to verify OUTPUT 1 OUTPUT 2 and OUTPUT 3 basic function 1 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 2 Set up the power supply as follows VOLTS SET 10 V CURRENT SET 1 A OVP SET 22 V DELAY 3 s 3 Press SHIFT STORE 1 to store the above values in the memory 01 location Verify that the MEMORY CURRENT A and VOLTS readouts display th...

Page 252: ...e should decrease in 1 volt steps on the VOLTS readout 15 Press VOLTS and verify that as you attempt to increase the voltage past 21 00 V Err 016 appears on the readouts The voltage should increase in 1 volt steps on the VOLTS readout 16 Press STEP SET Set the CURRENT SET to 1 A 17 Press CURRENT and verify that as you attempt to decrease the current below 0 000 A Err 019 appears on the readouts an...

Page 253: ... readouts The voltage should increase in 1 volt steps on the VOLTS readout 27 Press STEP SET Set the CURRENT SET to 1 A 28 Press CURRENT and verify that as you attempt to decrease the current below 0 000 A Err 019 appears on the readouts and the C C indicator lights The current should decrease in 1 ampere steps on the CURRENT A readout 29 Press CURRENT and verify that as you attempt to increase th...

Page 254: ...ator lights up on the display 2 Set up the power supply as follows VOLTS SET 20 V OVP SET 22 V 3 Press STEP SET Set the VOLTS SET to 0 05 V 4 Ensure that the power supply output is disabled Configure the DMM to measure 25 VDC across the front panel OUTPUT 1 2 terminals 5 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 6 Verify that the DMM reads between 19 965 and 20 035...

Page 255: ... 3 terminals 5 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 6 Verify that the DMM reads between 5 972 and 6 028 VDC 7 Press VOLTS or VOLTS to adjust the power supply output voltage until the DMM reads 6 00 VDC 8 Verify that the power supply VOLTS readout reads between 5 950 and 6 050 V 9 Press VOLTS SET Set the power supply output voltage to 0 1 V 10 Set the DMM to me...

Page 256: ...to measure 1 VDC across the power supply OUTPUT 2 and OUTPUT 1 terminals 12 Verify that the DMM reads between 0 1498 and 0 2500 VDC 13 Press OUTPUT ON OFF Verify that the OUT indicator turns off Parallel Operation Use the following steps to check the parallel mode accuracy 1 Press SHIFT OUT 2 verify that the 2 indicator lights up on the display 2 Set up the power supply as follows VOLTS SET 20 V O...

Page 257: ... OUTPUT 1 and OUTPUT 2 accuracy 1 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 2 Set up the power supply as follows VOLTS SET 10 V CURRENT SET 2 5 A OVP SET 11 V 3 Press STEP SET Set the CURRENT SET to 0 002 A 4 Ensure that the power supply output is disabled Configure the DMM to measure 10 amperes DC across the front panel OUTPUT 1 2 terminals 5 Press OUTPUT ON OFF Verif...

Page 258: ...cross the front panel OUTPUT 3 terminals 5 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 6 Verify that the DMM reads between 4 980 and 5 020 A 7 Press CURRENT or CURRENT to adjust the power supply output current until the DMM reads 5 000 A 8 Verify that the power supply CURRENT A readout indicates between 4 980 and 5 020 A 9 Press CURRENT SET Set the power supply outpu...

Page 259: ...ut current to 0 1 A 11 Verify that the DMM reads between 0 089 and 0 111 A 12 Press OUTPUT ON OFF Verify that the OUT indicator turns off 13 Press SHIFT PARA INDEP to reconfigure the outputs for independent operation Verify that the PARA indicator turns off 14 Disconnect the DMM from the power supply output terminals Complete the following procedures to verify OVP overvoltage protection accuracy O...

Page 260: ...t accuracy 1 With the power supply still set to OUT 2 press SHIFT PARA INDEP to configure OUTPUT 1 and OUTPUT 2 for parallel operation Verify that the PARA indicator lights up on the display 2 Repeat steps 2 through 11 of the Outputs 1 and 2 procedure above 3 Press SHIFT PARA INDEP to reconfigure the outputs for independent operation Verify that the PARA indicator turns off Output 3 Use the follow...

Page 261: ...Outputs 1 and 2 Use the following steps to check the OUTPUT 1 and OUTPUT 2 accuracy 1 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to the front panel OUTPUT 1 terminals See Figure 2 for details Power supply Electronic load Digital multimeter 10 A COM Figure 7 Constant Voltage Load Test S...

Page 262: ... terminals Maintain the equipment configuration and polarities shown in Figure 2 16 Repeat steps 4 through 10 above 17 Ensure that the power supply output is disabled Remove the leads from the front panel OUTPUT 2 terminals and connect them to the rear panel OUTPUT 2 terminals Maintain the equipment configuration and polarities shown in Figure 2 18 Repeat steps 5 through 8 above and verify that th...

Page 263: ...and OUTPUT 2 for parallel operation Verify that the PARA indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to the front panel OUTPUT 2 terminals Maintain the equipment configuration and polarities shown in Figure 2 3 Set the DMM to measure 25 VDC 4 Set up the power supply as follows VOLTS SET 20 V CURRENT SET 5 1 A OVP SET 22 V...

Page 264: ...e 2 3 Set the DMM to measure 10 VDC 4 Set up the power supply as follows VOLTS SET 6 V CURRENT SET 5 1 A OVP SET 7 V 5 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 6 Enable the electronic load Adjust the load until the power supply CURRENT A readout indicates 5 000 A 7 Record the DMM voltage V1 8 Turn off the electronic load and record the DMM voltage again V2 9 Verif...

Page 265: ...oad Digital multimeter 10 A COM Figure 8 Constant Voltage Source Test Setup 3 Set the DMM to measure 5 amperes DC 4 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 5 Set up the power supply as follows VOLTS SET 20 V CURRENT SET 2 55 A OVP SET 22 V 6 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 7 Enable the electronic load Adjust the load until t...

Page 266: ...s shown in Figure 3 3 Repeat steps 5 through 9 of the Outputs 1 and 2 procedure above Parallel Operation Use the following steps to check the parallel mode output accuracy 1 Press SHIFT PARA INDEP to configure OUTPUT 1 and OUTPUT 2 for parallel operation Verify that the PARA indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to ...

Page 267: ...T 7 V 4 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 5 Enable the electronic load Adjust the load until the DMM current reads 5 000 A 6 Adjust the output of the Variac from 108 to 132 VAC 120 V range or 198 to 242 VAC 220 V range Verify that the power supply VOLTS readout changes 0 003 volts over the adjustment range 7 Press OUTPUT ON OFF then disable the electronic l...

Page 268: ...e oscilloscope to LINE trigger source Adjust the output of the Variac from 108 to 132 VAC 120 V range or 198 to 242 VAC 220 V range Verify that the ripple changes 3 mVp p over the adjustment range 8 Press OUTPUT ON OFF Verify that the OUT indicator turns off 9 Press SHIFT OUT 2 verify that the 2 indicator lights up on the display 10 Ensure that the power supply output is disabled Remove the leads ...

Page 269: ... stabilize before the next check Complete the following procedures to verify constant current load and overcur rent protection accuracy Outputs 1 and 2 Use the following steps to check the OUTPUT 1 and OUTPUT 2 accuracy 1 Press SHIFT OUT 1 verify that the 1 indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to the front panel OU...

Page 270: ...y 12 Record the DMM current reading again I2 13 Verify that the difference between I1 and I2 is 0 003 A 14 Press OUTPUT ON OFF Verify that the OUT indicator turns off 15 Press OCP ON OFF verify that the OCP indicator lights up on the display 16 Press OUTPUT ON OFF Verify that the OUT indicator lights up on the display 17 Verify that the power supply readouts display the error message Err 012 18 Pr...

Page 271: ...nt operation Verify that the PARA indicator turns off Output 3 Use the following steps to check the OUTPUT 3 accuracy 1 Press SHIFT OUT 3 verify that the 3 indicator lights up on the display 2 Ensure that the power supply output is disabled Connect the DMM and electronic load to the front panel OUTPUT 3 terminals Maintain the equipment configuration and polarities shown in Figure 5 3 Set up the po...

Page 272: ...he OUT indicator lights up on the display 7 Adjust the output of the Variac from 108 to 132 VAC 120 V range or 198 to 242 VAC 220 V range Verify that the DMM current variation is 0 003 A over the adjustment range 8 Press OUTPUT ON OFF Verify that the OUT indicator turns off 9 Press SHIFT OUT 2 verify that the 2 indicator lights up on the display 10 Ensure that the power supply output is disabled R...

Page 273: ...urrent variation is 0 006 A over the adjustment range 7 Press OUTPUT ON OFF Verify that the OUT indicator turns off 8 Press SHIFT PARA INDEP to reconfigure the outputs for independent operation Verify that the PARA indicator turns off Output 3 Use the following steps to check the OUTPUT 3 accuracy 1 Press SHIFT OUT 3 verify that the 3 indicator lights up on the display 2 Ensure that the power supp...

Page 274: ...instruments for adjustment Step by step adjustment procedures The procedures in this section do not verify performance To confirm that your power supply meets factory specifications implement the procedures in the Performance Verification section List of Adjustments Use the adjustments listed in Table 10 to return PS2520 Series power supplies to factory calibration Table 8 PS2520 Series Adjustment...

Page 275: ... Minimum Requirements Example Product Digital Multimeter 4 digit Tektronix DM2510 or DM25210G DC volts accuracy 0 05 DC ampere accuracy 0 8 Preparation for Adjustment Perform the adjustment procedures on an as needed basis If a power supply section fails a performance requirement or if a section is replaced or repaired adjust only that section Adjusting individual sections of the instrument rarely...

Page 276: ... to make internal adjustments WARNING To avoid electrical shock disconnect the power cord from its source while removing the instrument cover Following the adjustment procedure replace the instrument cover before using the power supply To remove the instrument cover refer to Figure 12 while performing the following steps 1 Remove the two handle mounting screws with a Phillips head screwdriver 2 Re...

Page 277: ...code Table 10 Calibration Display Codes Display Code Calibration Description cL00 Password accepted initiate calibration cL10 Voltage offset cL11 Voltage full scale cL20 Current offset cL21 Current full scale cL2F Current offset or current full scale calibration complete cL30 Overvoltage protection offset cL31 Overvoltage protection full scale cL40 Parallel output current offset cL41 Parallel outp...

Page 278: ...1 indicating voltage full scale calibration 10 Adjust VR501 and VR601 to the settings listed in Table 11 See Figure 13 for the adjustment locations Following the adjustment enter the DMM reading on the power supply keypad and press Table 11 Voltage Full scale Adjustment Full Calibration Instrument Model To Cal OUTPUT 1 To Cal OUTPUT 2 PS2520 PS2520G Adjust VR601 for a DMM reading of 37 00 V Adjust...

Page 279: ...cating that the current full scale calibration is complete 16 Disconnect the DMM from the power supply 17 Press on the power supply and verify that the readout displays cL30 indicating overvoltage protection offset calibration Wait 10 seconds and verify that the readout displays cL31 indicating that the overvoltage protection full scale calibration is running 18 Wait another 10 seconds for the rea...

Page 280: ...bration 7 Enter the DMM reading on the power supply keypad and press The power supply readout will return to normal in approximately 10 seconds The calibration is complete Parallel Output Current Full Scale Use the following steps to calibrate the parallel output full scale current 1 Press SHIFT OUT 2 verify that the 2 indicator lights up on the display 2 Press SHIFT CURRENT 3 Enter the calibratio...

Page 281: ...r 2520 PS2521 PS2521G enter 2521 4 Verify that the power supply readout displays cL00 indicating calibration mode 5 Configure the DMM to measure DC volts autorange 6 Connect the DMM positive and negative leads to the corresponding OUTPUT 3 and terminals 7 Press on the power supply keypad Verify that the power supply readout displays cL10 voltage offset calibration 8 Enter the DMM reading on the po...

Page 282: ... 17 Disconnect the DMM from the power supply 18 Press on the power supply and verify that the readout displays cL30 indicating overvoltage protection offset calibration 19 Wait 10 seconds and verify that the readout displays cL31 indicating that the overvoltage protection full scale calibration is running Wait another 10 seconds for the readout to return to normal The calibration is complete See T...

Page 283: ...ltage Protection cL30 cL31 No connection from DMM to power supply Parallel Output Current cL40 cL41 Connect DMM positive and negative leads to the corresponding power supply and OUTPUT terminals NOTE The DMM range and function must be properly selected before proceed ing to the next step Ensure that good connections exist between the DMM and the power supply 7 Enter the calibration mode on the key...

Page 284: ...5 V PS2521 PS2521G Adjust VR601 for a DMM reading of 21 00 V Adjust VR601 for a DMM reading of 21 00 V Adjust VR601 for a DMM reading of 6 5 V cL20 Current Offset Calibration To calibrate the current offset enter the DMM reading in amperes on the power supply keypad and press The readout will return to normal when the calibration is complete cL21 Current Full Scale Calibration To calibrate the ful...

Page 285: ...ut Current Full Scale Calibration To calibrate the parallel output full scale current perform the following steps 1 Verify that the PARA indicator lights up on the display 2 Enter the DMM current reading on the power supply keypad and press The readout will return to normal when the calibration is complete ...

Page 286: ...Instructions Manual TAS 200 Series Oscilloscopes 070 9855 00 ...

Page 287: ...st Equipment 7 Set Up 8 Vertical Check 9 Horizontal Check 14 Trigger Check 16 Cursor Check 18 Adjustment Procedures 20 List of Adjustments 20 Test Equipment 22 Preparation for Adjustment 23 Power Supply Adjustments 26 Vertical Adjustments 29 Horizontal Adjustments 36 Trigger Adjustments 39 Probe Compensation 41 Cursors and Readout Adjustments 42 ...

Page 288: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 289: ...ing features High beam transmission and high intensity CRT displays for clear waveforms at high sweep speeds High stability low drift temperature compensation circuits to reduce baseline and DC balance drift Trigger feature Set to 50 that eliminates triggering adjustments when displaying regular video and large duty cycle ratio signals Synchronization separator and trigger circuitry that permits t...

Page 290: ...than 1 kHz Table 1 Vertical Deflection Characteristics Characteristic TAS 220 Description TAS 250 Description Frequency Bandwidth 3 dB DC to 20 MHz 5 mV div to 5 V div at 5 to 35 C DC to 50 MHz at 0 to 10 C and 35 to 40 C DC to 15 MHz DC to 40 MHz at 0 to 5 C and 35 to 40 C DC to 10 MHz 1mV div to 2 mV div DC to 15 MHz Vertical Gain 15 to 35 C 5 mV div to 5 V div 3 1 mV div to 2 mV div 5 Variable ...

Page 291: ...utput Typical 100 mV div open circuit 50 mV div into 50 W CH 2 INV Balance Typical 1 division balanced point variation Table 2 Horizontal Characteristics TAS 200 Series Characteristic Description Standard Sweep Time Accuracy 15 to 35 C 3 0 to 15 C and 35 to 40 C 4 Magnified Sweep Time Accuracy 1 ms div to 0 5 sec div 5 0 1 to 0 5 ms div 8 Sweep Linearity Standard 3 X10 MAG 5 X10 MAG 0 1 to 0 5 ms ...

Page 292: ...ristic Description Maximum Input Voltage 50 V DC peak AC Sensitivity 3 Vp p Trace becomes brighter with negative input Frequency Bandwidth DC to 5 MHz Input Resistance 5 k Table 6 Typical X Y Mode Operation Characteristic TAS 220 Description TAS 250 Description Sensitivity Same as CH 1 vertical axis Sensitivity Accuracy 5 mV to 5 V div 4 1 to 2 mV div 6 Frequency Bandwidth DC to 1 MHz DC to 2 MHz ...

Page 293: ... 5 Five cycles 120 hours referenced to MIL T 28800D paragraph 4 5 1 2 2 for type III class 5 instruments Operating and nonoperating at 90 0 5 relative humidity Vibration Operating 15 minutes along each of three major axes at a total displacement of 0 015 inch peak to peak 2 4 g at 55 Hz with frequency varied from 10 Hz to 55 Hz to 10 Hz in one minute sweeps Hold for 10 minutes at 55 Hz in each of ...

Page 294: ... of instrument electrical characteristics and function under the following conditions H The instrument operates in a 20_ to 30_ C ambient environment H The oscilloscope warms up for at least 20 minutes H The cabinet remains installed on the oscilloscope Table 11 lists the equipment needed to do the performance verification proce dures The TAS 200 series performance verification consists of the che...

Page 295: ...Performance Verification Test Equipment Description Minimum Requirements Example Product Leveled Sine Wave Generator 200 kHz to 250 MHz variable amplitude from 5 mV to 4 Vp p into 50 W Wavetek 9100 Universal Calibration System with Oscilloscope Calibration 50 Time Mark Generator Variable marker frequency from 10 ms to 10 ns accuracy within 2 ppm Module Option 250 Fluke 5500A Multi product Calibrat...

Page 296: ...settings listed below Table 12 Oscilloscope Initial Settings Control Setting INTENSITY Visible Display CURSOR ON OFF Off VERTICAL POSITION Midrange MODE CH1 VOLTS DIV 10 mV VARIABLE CAL GND In HORIZONTAL SEC DIV 10 ms POSITION Midrange MAG Off Out X Y Off Out SWEEP VARIABLE CAL TRIGGER SLOPE Positive push switch out LEVEL Midrange MODE AUTO SOURCE CH 1 COUPLING DC ...

Page 297: ...S 200 series oscilloscope CH 1 CH 2 input See Figure 2 below Calibration generator Precision cable Figure 2 Gain and Voltage Check Setup 2 Set up the oscilloscope as follows VERTICAL MODE CH1 CH2 CH 1 CH 2 AC DC DC CH 1 CH 2 VOLTS DIV 1 mV TRIGGER MODE AUTO HORIZONTAL SEC DIV 0 5 ms CH 1 CH 2 GND Out release 3 Set the oscilloscope CH 1 VOLTS DIV Scale and calibration generator output to each of th...

Page 298: ... 15 div 200 mV 1 V 4 85 to 5 15 div 500 mV 2 V 3 88 to 4 12 div 1 V 5 V 4 85 to 5 15 div 2 V 10 V 4 85 to 5 15 div 5 V 20 V 3 88 to 4 12 div 4 Set the calibration generator output to 5 mV 5 Return the oscilloscope CH 1 CH 2 VOLTS DIV control to 1 mV 6 Rotate the oscilloscope CH 1 CH 2 VERTICAL VARIABLE control counterclockwise off of the CAL position until the amplitude of the displayed waveform i...

Page 299: ... CH 1 CH 2 AC DC DC CH 1 CH 2 VOLTS DIV 1 mV HORIZONTAL SEC DIV 10 ms TRIGGER MODE AUTO TRIGGER COUPLING DC TRIGGER SOURCE CH 1 CH 2 CH 1 CH 2 GND Out release 3 To confirm the bandwidth of the input channel perform the following substeps a through c at the settings and limits noted in Table 14 a Set the oscilloscope CH 1 CH 2 VOLTS DIV control as indicated b Set the leveled sine wave generator to ...

Page 300: ... mV 6 divisions 4 2 divisions 20 MHz 50 MHz 100 mV 6 divisions 4 2 divisions 20 MHz 50 MHz 200 mV 6 divisions 4 2 divisions 20 MHz 50 MHz 500 mV 6 divisions 4 2 divisions 20 MHz 50 MHz 1 V 4 divisions 2 8 divisions 20 MHz 50 MHz 4 Repeat steps 1 through 3 for CH 2 To check DC balance accuracy perform the following steps 1 Set up the oscilloscope as follows VERTICAL MODE CH1 CH2 CH 1 CH 2 GND In CH...

Page 301: ...e fully counterclockwise positions of the CH 1 VARIABLE control 3 Repeat steps 1 and 2 above for CH 2 To check CH 2 Inverted balance accuracy perform the following steps 1 Set up the oscilloscope as follows VERTICAL MODE CH2 CH 2 GND In 2 Position the oscilloscope trace on the center horizontal graticule line using the CH 2 POSITION control 3 Verify that there is minimal trace shift 1 divisions on...

Page 302: ...rator 50 W Termination Precision cable Figure 4 Timing Check Setup 2 Set up the oscilloscope as follows VERTICAL MODE CH1 CH 1 AC DC DC CH 1 VOLTS DIV 0 5 V CH 1 GND Out release HORIZONTAL SEC DIV 1 ms TRIGGER MODE AUTO TRIGGER COUPLING DC 3 Set up the time mark generator to produce 0 1 ms markers 4 Center the time marks vertically on the oscilloscope display 5 Position the rising edge of the seco...

Page 303: ... 24 division 1 ms 0 1 ms 0 24 division 2 ms 0 2 ms 0 24 division 5 ms 0 5 ms 0 24 division 1 ms 1 ms 0 24 division 2 ms 2 ms 0 24 division 5 ms 5 ms 0 24 division 7 Set the oscilloscope HORIZONTAL SEC DIV control to either 5 ms TAS 220 or 1 ms TAS 250 8 Set the oscilloscope HORIZONTAL X10 MAG push switch to the on position in 9 Set the time mark generator to 20 ns 10 Position the edge of the secon...

Page 304: ...n out Trigger Check The following check verifies the trigger accuracy of your oscilloscope 1 Use the 50 W precision coaxial cable to connect the output of the leveled sine wave generator to the 50 W termination then connect the 50 W termination to the TAS 200 series instrument CH 1 input See Figure 5 below Sine Wave Generator Precision Cable 50 Termination Figure 5 Trigger Level Check Setup 2 Set ...

Page 305: ...Frequency Trigger 1 5 divisions 20 MHz 50 MHz 4 Reduce the leveled sine wave generator output until the minimum trigger waveform amplitude is equal to the value listed in Table 17 If necessary adjust the oscilloscope TRIGGER LEVEL to maintain a stable waveform during the operation 5 Set the leveled sine wave generator for a four division output at the high frequency trigger level listed in Table 1...

Page 306: ...tch 6 Toggle the TRACKING O REF push switch to select only the O cursor 7 Position the O cursor 4 divisions to the right of the display vertical center with the CURSOR POSITION switch 8 Verify that the DT readout at the top left corner of the display reads between 7 72 and 8 28 ms 9 Set the VERTICAL MODE switch to CH2 and repeat steps 4 through 8 for CH 2 To check cursor DV measurement accuracy im...

Page 307: ...ice 19 6 Position the O cursor 3 divisions below the display horizontal center with the CURSOR POSITION switch 7 Verify that the DV1 2 readout at the top left corner of the display reads between 5 78 and 6 22 V 8 Set the VERTICAL MODE switch to CH2 and repeat steps 3 through 7 for CH 2 ...

Page 308: ...ment Step by step adjustment procedures The procedures in this section do not verify performance To confirm that your oscilloscope meets factory specifications implement the procedures in the Performance Verification section List of Adjustments Use the adjustments listed in Table 18 to return TAS 220 and TAS 250 oscillo scopes to factory calibration Table 18 TAS 220 and TAS 250 Adjustments Power S...

Page 309: ... TAS 250 Adjustments Cont Horizontal Adjustments X10 Magnification Registration Horizontal Position 1 ms Timing 1 ms and 1 ms Timing X Gain Accuracy X Axis Offset Trigger Adjustments Trigger DC Offset Trigger Slope Balance Trigger Center Probe Compensation Cursors and Readout Adjustments Cursor Accuracy Drift ...

Page 310: ...enerator 1 kHz to 250 MHz variable amplitude from 5 mV to 4 Vp p into 50 W Wavetek 9100 Universal Calibration System with Oscilloscope Calibration 50 Time Mark Generator Variable marker frequency from 1 ms to 10 ns accuracy within 2 ppm Module Option 250 Fluke 5500A Multi product Calibrator with C 5500 C DC Calibration Generator DC voltage levels from 100 mV to 10 V 5500 C Oscilloscope Calibration...

Page 311: ...instrument for at least 20 minutes H Do not alter a setting unless a performance characteristic cannot be met at the current setting H Do not alter any setting without reading the entire adjustment procedure first H Read the Safety Summary at the beginning of this manual NOTE Altering the 12 V ADJ setting may require a complete readjustment of the instrument You must remove the instrument cover to...

Page 312: ...0 Series Adjustment Procedures 24 Handheld and Benchtop Instruments Basic Service Rear panel mounting screws 4 Rear panel Instrument cover Cover screws 2 Figure 6 TAS 220 and TAS 250 Instrument Cover Removal ...

Page 313: ...illoscope Initial Settings Control Setting INTENSITY Visible display CURSOR ON OFF Off VERTICAL CH 1 CH 2 POSITION Midrange MODE CH1 CH2 CH 1 CH 2 VOLTS DIV 10 mV CH 1 CH 2 VOLTS DIV VARIABLE CAL CH 1 CH 2 GND In HORIZONTAL POSITION Midrange X10 MAG Out X Y Out SWP UNCAL Out TRIGGER LEVEL Midrange MODE AUTO COUPLING AC SOURCE CH 1 CH 2 SLOPE Rising push switch out Initial Settings ...

Page 314: ...aution when adjusting the power supply The high voltages present can cause a fatal injury Instrument front Test points ASTIG VR604 SUB INTENSITY VR603 SUB FOCUS VR602 12V ADJ VR601 12V FREQ ADJ VR701 Figure 7 Power and High Voltage Board Viewed from the Instrument Bottom Use the following procedure to adjust the 12 V power supply 1 On the Power and High Voltage board connect the voltmeter common l...

Page 315: ... Set up the oscilloscope as follows HORIZONTAL SEC DIV 1 ms TRIGGER HOLDOFF NORM 2 Rotate the front panel INTENSITY control to the fully counterclockwise position then rotate the control clockwise to the 90_ nine o clock position 3 Locate VR603 on the Power and High Voltage board see Figure 7 for the adjustment location Adjust VR603 until the trace is barely visible 4 Rotate the INTENSITY control ...

Page 316: ...he display center Rotate the INTENSITY control to give the dot a sharp edge 4 Adjust VR604 on the Power and High Voltage board and the oscilloscope front panel FOCUS control until the dot becomes circular See Figure 7 for the adjustment location 5 Set the front panel HORIZONTAL X Y push switch to the out position 6 Repeat steps 1 through 5 for best performance ...

Page 317: ...rocedures refer to Figures 8 9 and 10 The Main board occupies the bottom right side of the instrument VR401 VR407 VR206 VR301 VR112 VR110 VR109 VR113 VR104 VR102 VR202 VR204 VR213 VR207 VR210 VR405 VR408 VR502 VR303 VR108 VR103 VR208 VR203 VR404 VC106 VC105 VC205 VC206 Instrument front VR802 VR106 VR107 Figure 8 Main Board Viewed from the Instrument Top ...

Page 318: ... is less than two divisions when switching the VOLTS DIV control between 1 mV and 2 mV 6 Set the VERTICAL MODE to CH2 and repeat steps 2 through 5 for CH 2 Use the following procedure to adjust the variable DC balance 1 Set up the oscilloscope as follows VERTICAL MODE CH1 CH2 CH 1 CH 2 VOLTS DIV 10 mV CH 1 CH 2 VARIABLE CAL CH 1 CH 2 GND In 2 On the Main board adjust VR106 VR206 for a minimal trac...

Page 319: ...H 1 CH 2 VARIABLE CAL CH 1 CH 2 GND In 2 Position both traces on the center horizontal graticule line using the CH 1 and CH 2 VERTICAL POSITION controls 3 Set the VERTICAL MODE control to the ADD position 4 On the Main board adjust VR301 to position the trace on the center horizontal graticule line See Figure 8 for the adjustment location 5 Set the VERTICAL MODE switch to BOTH CH2 and then CH1 ver...

Page 320: ...VERTICAL MODE to CH2 and repeat steps 2 and 3 for CH 2 Use the following procedure to adjust the high frequency compensation 1 Set up the oscilloscope as follows VERTICAL MODE CH1 CH2 CH 1 CH 2 VOLTS DIV 10 mV CH 1 CH 2 VARIABLE CAL CH 1 CH 2 AC DC AC HORIZONTAL SEC DIV 0 2 ms 2 Connect a 20 MHz sine wave to the CH 1 CH 2 input Adjust the generator output to produce a waveform four divisions in am...

Page 321: ...put Adjust the generator output to produce a waveform six divisions in amplitude on the display 10 Increase the frequency to 20 MHz for the TAS 220 or 50 MHz for the TAS 250 Verify that the waveform amplitude exceeds 4 2 divisions at these frequencies 11 Set the oscilloscope CH 1 CH 2 VOLTS DIV to 1 mV and the sine wave generator to 50 kHz Adjust the generator output to produce a waveform eight di...

Page 322: ... overshoot See Figure 10 for the adjustment locations Instrument front VC101 VC103 VC102 VC104 VC203 VC201 VC202 VC204 1 10 1 100 1 10 1 100 STEP BAT VR101 X AXIS DC OFFSET VR401 TRIG BAL VR403 TRIG CENT VR407 STEP BAT VR201 Figure 10 Main Board Viewed from the Instrument Bottom 4 Set the CH 1 CH 2 VOLTS DIV control to 1 V 5 Readjust the generator output to produce a waveform five divisions in amp...

Page 323: ...Figure 10 for the adjustment locations 16 For each setting of the CH 1 CH 2 VOLTS DIV control adjust the generator output to produce a waveform five divisions in amplitude Evaluate the waveform for optimum symmetry and flatness at each setting 17 Set the VERTICAL MODE to CH2 and repeat steps 2 through 16 for CH 2 Use the following procedure to adjust the channel 1 output DC offset 1 Set up the osc...

Page 324: ...HORIZONTAL POSITION control to reposition the trace to the display center 4 Set the HORIZONTAL X10 MAG push switch to the out position Adjust VR502 to position the trace edge to the display vertical center See Figure 8 for the adjustment location 5 Repeat steps 3 and 4 until the trace edge remains within 1 division of the display center when pressing the HORIZONTAL X10 MAG push switch in and out U...

Page 325: ... CH1 CH 1 VERTICAL POSITION Midrange HORIZONTAL SEC DIV 1 ms HORIZONTAL SWP UNCAL Out 2 Connect the time mark generator to the CH 1 input with a 50 W coaxial cable and 50 W termination 3 Set up the generator to produce a 1 ms output 4 Adjust the generator output to produce a waveform one division in amplitude on the display 5 Adjust VR404 for a one marker per division display See Figure 8 for the ...

Page 326: ...ollowing procedure to adjust the X axis DC offset 1 Set up the oscilloscope as follows CH 1 VERTICAL POSITION Midrange VERTICAL MODE CH1 CH 1 VOLTS DIV 50 mV CH 1 GND In HORIZONTAL SEC DIV 1 ms HORIZONTAL X Y Out TRIGGER MODE AUTO 2 Position the trace vertically to the horizontal center graticule line 3 Position the left edge of the trace horizontally to the first vertical graticule line extreme l...

Page 327: ...onnect a 50 kHz sine wave to the CH 1 CH 2 input Adjust the generator output to produce a waveform eight divisions in amplitude on the display 3 Rotate the TRIGGER LEVEL control to set the trigger point at the center of the signal swing 4 Alternate the TRIGGER COUPLING control between the AC and DC positions Adjust VR110 VR210 until the oscilloscope triggers at the same amplitude for both switch p...

Page 328: ...Adjust VR403 for a 0 4 division downward vertical shift at the beginning of the sweep See Figure 10 for the adjustment location Use the following procedure to adjust the trigger center 1 Set up the oscilloscope as follows HORIZONTAL SEC DIV 1 ms TRIGGER SOURCE CH 1 TRIGGER SET TO 50 In CH 1 AC DC AC 2 Connect a 50 kHz sine wave to the CH 1 input Adjust the generator output to produce a waveform ei...

Page 329: ...Viewed from the Instrument Bottom 1 Set up the oscilloscope as follows VERTICAL MODE CH1 CH 1 VOLTS DIV 0 5 V CH 1 AC DC DC HORIZONTAL SEC DIV 0 2 ms TRIGGER COUPLING DC TRIGGER SOURCE CH 1 2 Connect the probe to the CH 1 input connector 3 Touch the probe tip to the PROBE COMP tab on the left side of the front panel 4 Adjust the probe compensation for a flat topped square wave on the display 5 Adj...

Page 330: ...rsor accuracy 1 Simultaneously press the front panel PROBE X1 X10 and the V T 1 T push switches to display the cursor calibration square Figure 12 Cursor Calibration Display 2 On the Control and I O board adjust the following potentiometers to position the alignment square as shown in Figure 12 See Figure 13 for the adjustment locations X Gain VRA01 X Position VRA02 Y Gain VRA03 Y Position VRA04 3...

Page 331: ...llowing procedure to minimize the readout drift 1 If the display readouts are not visible simultaneously press the front panel PROBE X1 X10 and the CURSOR ON OFF push switches 2 While toggling the VERTICAL MODE switch between BOTH and ADD positions adjust VRA05 on the Control and I O board to minimize the character drift 3 Simultaneously press the PROBE X1 X10 and the V T 1 T push switches to turn...

Page 332: ...TAS 200 Series Adjustment Procedures 44 Handheld and Benchtop Instruments Basic Service ...

Page 333: ...Instructions Manual THM420 Digital Multimeter 070 9856 00 ...

Page 334: ...ents Basic Service i Table of Contents THM420 Digital Multimeter 1 Specifications 2 Performance Verification 7 Test Equipment 8 Verification Procedure 8 Adjustment Procedures 14 Preparation for Adjustment 14 Adjustment Procedure 16 ...

Page 335: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 336: ... The THM420 includes the following features 3 digits 4000 count LCD display with bargraph Waveform display with the press of a button A variety of measurement functions DC AC voltage DC AC current resistance frequency diode testing continuity checking True RMS measurements Autoranging for DMM and waveform display Measurement hold Input overvoltage and overcurrent warning beeper Figure 1 THM420 Ins...

Page 337: ... digit 4000 count LCD Polarity Display Automatic Overrange Display OVER is displayed Low Voltage Indicator Battery indicator is displayed Measurement Rate 50 ms Automatic power off time Approximately 30 minutes Power Six AA UM 3 R6 dry cell batteries Battery Life Back light Off typically greater than 10 hours using six alkaline batteries Maximum Floating Voltage 600 VACRMS CAT II or 850 VDC betwee...

Page 338: ...MW paralleled by 100 pF Current DC Ranges 400 mA 8 A AC Ranges 400 mA 8 A DC Accuracy 400 mA Range 0 6 of reading 3 counts 8 A Range 0 8 of reading 4 counts AC Accuracy 40 to 1 kHz 400 mA Range 1 8 of reading 5 counts 8 A Range 1 8 of reading 5 counts Overload protection mA Connector 500 mA 350 V fast blow fuse A Connector 15 A 600 V fast blow fuse Resistance Ranges 400 W 4 kW 40 kW 400 kW 4 MW 40...

Page 339: ...e is approximately 30 W or less Diode Test Test Current 1 0 mA Test Voltage 5 V maximum Table 3 Waveform Display Characteristics Characteristic Description Display Region 8 Horizontal divisions and 4 vertical divisions 16 dots division Vertical Voltage Input Bandwidth 20 mV to 1 V div DC to 5 MHz 2 V to 200 V div DC to 3 MHz Current Inputs Rise Time Limits 400 mA Connector 500 ns 8 A Connector 5 m...

Page 340: ... after trigger point Right edge 8 divisions shown after the trigger point Trigger Trigger Mode Auto Coupling DC Slope Positive or negative Table 4 Physical Characteristics Characteristic Description Height 6 5 cm 2 56 inch Width 9 cm 3 54 inch Depth 20 8 cm 8 19 inch Weight With batteries approximately 640 g 22 6 oz Table 5 Environmental Characteristics Characteristic Description Temperature Opera...

Page 341: ...to 500 Hz 3 axes 10 minutes each 2 66 gRMS Nonoperating 5 to 500 Hz 3 axes 10 minutes each 3 48 gRMs Table 6 Optical Interface Characteristics Characteristic Description Infrared Wavelength 945 nm Carrier Wavelength 38 kHz Reception Range Approximately 1 meter Table 7 Certifications Characteristic Description Certifications Listed UL3111 1 and CSA C22 2 No 1010 1 ...

Page 342: ...a valid confirmation of instrument electrical characteristics and function under the following conditions The instrument operates in an 18 to 28 C environment with a relative humidity of less than 80 The instrument remains fully assembled do not remove the bottom cover The THM420 performance verification consists of the checks listed in Table 8 Table 8 Performance Verification Checks DC Voltage AC...

Page 343: ...warm up the test equipment according to the manufacturer s recommendations Verification Procedure WARNING The following tests use hazardous voltages If you use standard banana plugs to apply test signals to the THM420 instrument do not touch the exposed conductors NOTE For the following series of tests set the METER SCOPE button to the METER mode To verify the performance of your THM420 instrument...

Page 344: ... measurement accuracy 1 Set the THM420 DC AC button to ACV 2 Configure the voltage source to output AC 3 Set the controls of the THM420 and the voltage source to each of the values listed in Table 10 then verify that the THM420 readout remains within the readout limits Table 10 AC Voltage Accuracy AC Voltage Source Readout Limits THM420 Range Voltage Frequency Minimum Maximum 400 mV 300 0 mV 1 kHz...

Page 345: ...99 4 kW 100 6 kW 40 MW 10 00 MW 9 80 MW 10 20 MW 4 Disconnect the test setup The following check verifies diode and continuity measurement accuracy 1 Turn the THM420 rotary switch to and 2 Connect the THM420 COM input to the V W Hz input with a shorting strap 3 Verify that the THM420 readout indicates approximately 0 000V and the beeper sounds 4 Disconnect the test setup The following check verifi...

Page 346: ...420 COM and the V W Hz input connectors 5 Set the controls of the THM420 and the current source to each of the values listed in Table 13 then verify that the THM420 readout remains within the readout limits Table 13 DC Amperes Accuracy TH 4 a Readout Limits THM420 Rotary Switch DC Current Source Minimum Maximum mA 200 0 mA 198 5 mA 201 5 mA A 2 000 A 1 94 A 2 06 A 6 Do not disconnect the test setu...

Page 347: ...ry switch to V 2 Connect the THM420 COM input to the V W Hz input with a shorting strap 3 Verify that there is no trace shift while using the buttons to switch between SCALE settings vertical volts division 4 Disconnect the test setup The following check verifies trace slope accuracy 1 Turn the THM420 rotary switch to V 2 Set the DC AC button to AC V 3 Set the SCALE to 200 V with the buttons 4 Set...

Page 348: ... the voltage source output 10 Disconnect the test setup The following check verifies printer operation 1 Press and hold the THM420 PRINT button for two seconds Verify that the icon appears in the upper right corner of the display The following check verifies that the display back light operates properly 1 Press the THM420 LIGHT button and verify that the back light is on Printer Back Light ...

Page 349: ...nt adjustments H Perform all adjustments in a 20 to 30_ C 68_ to 86_ F ambient environ ment H Before making any adjustment warm up the instrument for at least 20 minutes H Do not alter any setting without reading the entire adjustment procedure first H Do not alter a setting unless a performance characteristic cannot be met at the current setting H Read the Safety Summary at the beginning of this ...

Page 350: ...oard to make adjustments To expose the board refer to Figure 3 while performing the following steps 1 Remove the two circuit board mounting screws with a Phillips head screwdriver 2 Lift the top circuit board up and position it to the side Do not disconnect any cables 3 Fold back the insulating shield that separates the top circuit board from the bottom circuit board To reinstall the top circuit b...

Page 351: ...n the THM420 rotary switch to V 2 Press the METER SCOPE button to select SCOPE mode 3 Set the AC DC button to DC 4 Connect the COM input to the V W Hz input with a shorting strap 5 Set the vertical offset POS to 0 mV 6 Set the vertical SCALE to 200 V 7 Adjust R80 to align the trace to the display center line See Figure 4 for the adjustment location 8 Set the vertical scale to 20 mV 9 Adjust R84 to...

Page 352: ...1 Turn the rotary switch to mA 12 Press the METER SCOPE button to select SCOPE mode 13 Set the AC DC button to DC 14 Set the vertical offset POS to 0 mA 15 Set the vertical SCALE to 2 mA 16 Adjust R86 to align the trace to the display center R80 R86 R84 Figure 4 Adjustment Locations ...

Page 353: ...THM420 Adjustment Procedures 18 Handheld and Benchtop Instruments Basic Service ...

Page 354: ...Instructions Manual THM500 Series Instruments 070 9857 00 ...

Page 355: ... Benchtop Instruments Basic Service i Table of Contents THM500 Series Instruments 1 Specifications 3 Performance Verification 9 Test Equipment 10 Functional Test 11 DMM Verification 12 Oscilloscope Verification 15 ...

Page 356: ...Table of Contents ii Handheld and Benchtop Instruments Basic Service ...

Page 357: ...held value D Hold AC and DC current measurement with optional current probe The oscilloscope portion of the instruments feature an autoranging mode that completely automates operation In this mode a usable signal is always displayed without operator intervention If desired you can switch to manual mode by selecting any control In manual mode you can specify general oscilloscope operations such as ...

Page 358: ...instruments will also store waveforms settings and displays With these features you can do the following Recall settings Automate test procedures Save waveforms and screens in the field for later analysis Transfer waveforms and screens to a personal computer requires optional communications adapter ...

Page 359: ...d for the convenience of the user The specifications listed for the THM565 also apply to the THM57x series except as noted in Table 1 Table 1 How THM565 and THM57x Series Products Differ 57x 565 Modes Line Test D Motor Test D Automotive preconfigured test setups D Vertical Mathematics capability D Invert capability D Measurements Voltage Measurement D Timing Measurement D Power Measurement D THDF ...

Page 360: ...5 counts D D D Normal Mode Rejection 60 dB typical at user selectable 50 or 60 Hz D D D Common Mode Rejection 100 dB typical at user selectable 50 or 60 Hz D D D AC Voltage Range and Resolution True RMS Range Resolution 400 mV 0 1 mV 4 V 1 mV 40 V 10 mV 400 V 100 mV 600 V 1 V Autorange not available on 400 0 mV range D D D Accuracy 2 of reading 5 counts for 50 or 60 Hz sine wave Add 2 of reading p...

Page 361: ...es drop outs and substantial frequency variations will be captured and counted D D H Automatic print of failures D D H Automatic screen save on failures 1 8 H Time and date stamp on failure D Motor Test Will stabilize trigger on pulse width modulated signals generated by variable speed AC motor drives D Vertical Channels Each channel is identical 1 2 2 Probe Interface Shrouded banana jack Accepts ...

Page 362: ...y D D D Roll 200 ms div to 60 s div D D D Measurements Cursors Voltage difference between cursors DV Time difference between cursors DT Reciprocal of DT in Hertz 1 DT D D D Voltage and Amperes For voltage or current probes Maximum MAX Minimum MIN Peak Peak P P D D D Timing Frequency FREQ Period PER D D D Power Calculates true RMS current voltage true power and power factor from CH 1 current using ...

Page 363: ...per Twisted Liquid Crystal Display D D D Size Width 120 mm 4 72 inch Height 60 mm 2 36 inch D D D Display Resolution 256 pixels horizontal 128 pixels vertical D D D Contrast User adjustable D D D Backlight Electroluminescent D Waveform Graticule 8 divisions vertical 10 divisions horizontal Default crosshair grid or none 1 vertical division 15 pixels 1 horizontal division 25 pixels D D D Power Sour...

Page 364: ...nce found Test performed on each of three axes D D D Half sine Shock Operating 30 g with pulse duration of 11 ms Three shocks per axis Test Duration 10 minutes at the peak resonance condition 33 Hz if no resonance found Test performed on each of three axes D D D EMC Emissions EN 55011 radiated class A D D D Immunity IEC 801 2 electrostatic discharge Up to 8 kV IEC 801 3 radiated immunity 3 V meter...

Page 365: ... within the environmental conditions specified in Table 4 on page 8 during the verification process The instrument operates continuously for a 5 minute period before the verification begins Table 6 lists the equipment needed to complete the performance verification procedures The THM500 Series performance verification consists of the checks listed in Table 5 Table 5 Performance Verification Checks...

Page 366: ...ents Example Product Leveled Sine Wave Generator Output must provide 5 V into 50 W with 3 amplitude regulation at 50 kHz to 5 MHz Wavetek 9100 Universal Calibration System with Oscilloscope Calibration Module Option 250 Time Mark Generator Output must provide 1 ms markers 0 5 at 1 V amplitude Fluke 5500A Multi product Calibrator with Oscilloscope Calibration Option 5500 SC Calibrator C 5500 C DC V...

Page 367: ...utton to display the menus NOTE The THM575 can display the menus in more than one language The language selections are located in the Utility menu 4 Select UTILITY STATUS DISPLAY from the menus 5 Press the SELECT button Verify that the correct THM500 series instrument model number is displayed 6 Use the menus to select RESET ALL It will appear underlined 7 Press the SELECT button and wait for the ...

Page 368: ... the lower right does not indicate AUTO press the Y and B buttons simultaneously to set the RANGE to AUTO 2 Connect the voltage source output to the THM500 series instrument DMM and COM inputs as shown in Figure 2 Assure that the ground connection for each adapter connects to the common or ground connector of its associated instrument 3 Set the voltage source for DC output Voltage source THM5xx CO...

Page 369: ...does not indicate AUTO press the Y and B buttons simultaneously to set the RANGE to AUTO 2 Set the voltage source to 60 Hz AC output 3 For each row of Table 8 use the Y and B buttons to set the THM500 series instrument to the range specified in the first column then set the voltage source to the output voltage specified in the second column Verify that the THM500 series instrument readout is withi...

Page 370: ...M500 series instrument to the range specified in the first column then set the resistance source to the resistance specified in the second column Verify that the THM500 series instrument readout is within the range listed in the third column Table 9 Resistance Accuracy Test Limits Instrument Range Resistance Source Instrument Readout 400 100 99 3 to 100 7 4 k 1 k 0 993 to 1 007 40 k 10 k 9 93 to 1...

Page 371: ...essary press the SELECT button to point to CH 1 2 Use a patch cord to short the THM500 series instrument COM and CH 1 inputs as shown in Figure 4 THM5xx CH 1 COM Patch cord Figure 4 Noise Test Setup 3 Press the SCALE button until the readout in the lower right corner indicates SCALE then use the Y and B buttons to set the vertical scale to 10 mV div 4 Use the menus to set the sampling mode to SPIK...

Page 372: ...E button until the readout in the lower right corner shows POS then use the Y and B buttons to position the trace vertically at the center of the display 5 Verify that as you remove the shorting patch cord the waveform does not move more than three pixels vertically 6 If your THM500 series instrument is equipped with two channels repeat steps 2 through 5 above for CH 2 7 Disconnect the test setup ...

Page 373: ...ent menus to set CH 1 CPLG to DC then turn the menus off 6 Press the THM500 series instrument CURSORS TRIGGER button until the readout shows TRIG in the lower right corner then use the Y and B buttons to set the trigger level to one division above the bottom of the displayed signal Use the A or button to set the trigger to rising edge 7 Press the THM500 series instrument POSITION SCALE button unti...

Page 374: ...to apply test signals to the THM500 series instrument do not touch the exposed conductors 3 For each row of Table 10 perform the following steps a Use the THM500 series instrument Y and B buttons to set the vertical scale to the setting listed in the first column b Set the voltage source output to the value in the second column c Press the THM500 series instrument POSITION SCALE button to show POS...

Page 375: ...o 648 V 4 If your THM500 series instrument is equipped with two channels repeat Step 3 all tests above on CH 2 5 Disconnect the test setup The following check assesses the analog bandwidth 1 Connect the leveled sine wave generator output to the THM500 series instrument CH 1 and COM inputs Use a 50 W termination as shown in Figure 8 Assure that the ground connection for each adapter connects to the...

Page 376: ...ent is greater than or equal to the value listed in the third column Use the cursors for greater accuracy Table 11 Bandwidth Test Settings THM500 Series Vertical Scale Leveled Sine Wave Generator Amplitude Leveled Sine Wave Generator Test Frequency Instrument Waveform Amplitude 100 mV div 6 divisions 600 mVp p readout 5 MHz 4 2 divisions1 420 mV cursor readout 500 mV div 6 divisions 3 00 Vp p read...

Page 377: ...A and buttons to set the time base to 2000 ms div 5 Use the THM500 series instrument menus to set the sampling mode to SPIKE DETECT then remove the menus from the display 6 Verify that the peak to peak amplitude is less than 0 5 divisions 25 mVp p The following check assesses the crosstalk between oscilloscope channels If your instrument has only one channel THM550 do not perform this test 1 Conne...

Page 378: ...strument menus to set the sampling mode to SPIKE DETECT then remove the menus from the display 5 Adjust the leveled sine wave generator to display five divisions peak to peak at 5 MHz NOTE The 5 MHz waveform is aliased and appears untriggered 6 Press the THM500 series instrument WAVEFORM ON OFF button to turn the CH 1 waveform display off 7 Press the THM500 series instrument SELECT button to selec...

Page 379: ... POSITION SCALE button until the readout shows SCALE in the lower right corner then use the Y and B buttons to set the CH 1 vertical scale to 5 mV div 6 Verify that the offset is less than four pixels from the center graticule line 7 Use the Y and B buttons to set the vertical scale to the next range 8 Repeat steps 6 through 7 above until you have checked all ranges 10 mV div through 500 V div 9 I...

Page 380: ...THM500 Series Performance Verification 24 Handheld and Benchtop Instruments Basic Service ...

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Tektronix DCM300, Technical Reference

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