Keithley 2015 Page 67 Service Manual Download

Page: 67 / 158

4-4

Troubleshooting

Power-on self-test

During the power-on sequence, the Model 2015 will perform a checksum test on its EPROM

(U156 and U157) and test its RAM (U151 and U152). If one of these tests fails, the instrument
will lock up.

Summary of Contents for 2015

Page 1: ...SHIFT LOCAL POWER RANGE R SHIFT CH1 REM TALK LSTN SRQ STAT REL FILT 4W BUFFER MATH REAR SCAN TIMER STEP CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 HOLD TRIG FAST MED SLOW AUTO ERR EXIT ENTER DIGITS RATE REL...

Page 2: ...90 days LIMITATION OF WARRANTY This warranty does not apply to defects resulting from product modification without Keithley s express writ ten consent or misuse of any product or part This warranty a...

Page 4: ...nda are numbered sequentially When a new Revision is created allAddenda associated with the previous Revision of the manual are incorporated into the new Revision of the manual Each new Revision inclu...

Page 5: ...nt A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring Users of this product must be protected from electric shock at all times The responsibl...

Page 6: ...before performing the indicated procedure The CAUTION heading in a manual explains hazards that could damage the instrument Such damage may invalidate the warranty Instrumentation and accessories shal...

Page 7: ...Verifying DC current 1 12 Verifying AC current 1 13 Verifying resistance 1 14 Verifying temperature 1 16 Verifying frequency 1 17 Verifying total harmonic distortion 1 18 Verifying function generator...

Page 8: ...ction generator calibration 2 23 Programming calibration dates 2 23 Saving calibration constants 2 23 Locking out calibration 2 23 Manufacturing calibration 2 24 Recommended test equipment 2 24 Unlock...

Page 9: ...oval 5 6 DMM board removal 5 6 DSP board removal 5 7 Front panel disassembly 5 8 Removing power components 5 8 Instrument reassembly 5 9 Input terminal wire connections 5 9 Power module wire connectio...

Page 10: ...A 14 Temperature A 14 B Calibration Reference Introduction B 2 Command summary B 3 Miscellaneous calibration commands B 5 CODE B 5 COUNt B 5 INIT B 6 LOCK B 6 LOCK B 7 SAVE B 7 DATE B 8 NDUE B 8 DC ca...

Page 11: ...ror Available bit B 20 Generating an SRQ on error B 20 Detecting calibration step completion B 21 Using the OPC query B 21 Using the OPC command B 21 Generating an SRQ on calibration complete B 22 C C...

Page 12: ...on 1 19 2 Calibration Low thermal short connections 2 8 Connections for DC volts and ohms calibration 2 9 Connections for DC and AC amps calibration 2 12 Connections for AC volts calibration 2 13 Conn...

Page 13: ...14 Distortion and function generator calibration summary 2 15 DC voltage calibration programming steps 2 18 Resistance calibration programming steps 2 19 DC current calibration programming steps 2 20...

Page 14: ...ions 4 25 5 Disassembly Input terminal wire colors 5 9 Power module wire colors 5 9 6 Replaceable Parts DMM mother board parts list 6 3 Display board parts list 6 9 Distortion DSP board parts list 6 1...

Page 15: ...1 Performance Verification...

Page 16: ...that it was not damaged during ship ment and that the unit meets factory specifications If the instrument s accuracy is questionable Following calibration WARNING The information in this section is i...

Page 17: ...n 80 unless otherwise noted Warm up period Allow the Model 2015 Multimeter to warm up for at least one hour before conducting the ver ification procedures If the instrument has been subjected to tempe...

Page 18: ...200ppm 1 0V 82ppm 10V 82ppm 100V 90ppm 700V 85ppm 10mA 60ppm 100mA 70ppm 1A 110ppm 2 2A 94ppm 1A 690ppm 2 2A 682ppm 100 17ppm 1k 12ppm 10k 11ppm 100k 13ppm 1M 18ppm 10M 37ppm 100M 120ppm Fluke 5725A...

Page 19: ...Assume you are testing the 10V DC range using a 10V input value Using the Model 2015 one year accuracy specification for 10V DC of 30ppm of reading 5ppm of range the cal culated limits are Reading li...

Page 20: ...e instrument to its factory defaults as follows 1 Press SHIFT and then SETUP The instrument will display the following prompt RESTORE FACT 2 Using either range key select FACT then restore the factory...

Page 21: ...that the front panel input jacks are selected with the INPUTS switch Do not use autoranging for any verification tests because autorange hysteresis may cause the Model 2015 to be on an incorrect rang...

Page 22: ...sed by noise or thermal effects Connect the shield to the calibrator s output LO terminal Figure 1 1 Connections for DC volts verification Output HI Output LO 2015 THD MULTIMETER RANGE F 500V PEAK FRO...

Page 23: ...f the DC volts verification tests 5 Source positive and negative and full scale voltages for each of the ranges listed in Table 1 2 For each voltage setting be sure that the reading is within stated l...

Page 24: ...1 2 Figure 1 2 Connections for AC volts verification Output HI Output LO 2015 THD MULTIMETER RANGE F 500V PEAK FRONT REAR 3A 250V AMPS HI INPUT LO SENSE 4 WIRE INPUTS 350V PEAK 1000V PEAK AUTO SHIFT L...

Page 25: ...all within stated limits Table 1 3 ACV reading limits ACV range Applied AC voltage 1kHz reading limits 1 year 18 C 28 C 50kHz reading limits 1 year 18 C 28 C 100mV 1V 10V 100V 750V 100 0000mV 1 000000...

Page 26: ...re within stated limits Table 1 4 DCI limits DCI range Applied DC current Reading limits 1 year 18 C 28 C 10mA 100mA 1A 3A 10 0000mA 100 0000mA 1 000000A 2 20000A 9 99460 to 10 00540mA 99 9100 to 100...

Page 27: ...scale AC currents as summarized in Table 1 5 and verify that the readings are within stated limits Table 1 5 ACI limits ACV range Applied AC voltage Reading limits 1kHz 1 year 18 C 28 C 1A 3A 1 00000...

Page 28: ...e the SLOW integration rate with the RATE key 4 Set the Model 2015 for the 100 range and make sure the FILTER is on 5 Recalculate reading limits based on actual calibrator resistance values Output LO...

Page 29: ...10 00410M 99 8470 to 100 1530M __________ to __________ __________ to __________ k __________ to __________ k __________ to __________ k __________ to __________ M __________ to __________ M ________...

Page 30: ...the thermocouple type TYPE J C Select a type J temperature sensor then press ENTER The unit then displays the reference junction type JUNC SIM D Make certain that the simulated reference junction typ...

Page 31: ...ncy verification Model 2015 2015 THD MULTIMETER RANGE F 500V PEAK FRONT REAR 3A 250V AMPS HI INPUT LO SENSE 4 WIRE INPUTS 350V PEAK 1000V PEAK AUTO SHIFT LOCAL POWER RANGE R SHIFT CH1 REM TALK LSTN SR...

Page 32: ...HD function by pressing SHIFT then THD 5 Use the down RANGE key to select the 1V range 6 Verify that the Model 2015 THD reading is 0 004 Model 2015 2015THD MULTIMETER RANGE F 500V PEAK FRONT REAR 3A 2...

Page 33: ...function and choose the 10V range 4 Verify that the AC voltage reading is between 3 986V and 4 014V Model 2015 2015 THD MULTIMETER RANGE F 500V PEAK FRONT REAR 3A 250V AMPS HI INPUT LO SENSE 4 WIRE I...

Page 34: ...2 Calibration...

Page 35: ...only for qualified service per sonnel Do not attempt these procedures unless you are qualified to do so All the procedures require accurate calibration equipment to supply precise DC andAC volt ages...

Page 36: ...instrument has been subjected to temperature extremes those outside the ranges stated in the above section allow extra time for the instrument s internal temperature to stabilize Typ ically allow one...

Page 37: ...ing equipment If an error occurs during calibration the Model 2015 will generate an appropriate error message See Appendix B for more information WARNING The maximum common mode voltage voltage betwee...

Page 38: ...The factory default code is 002015 Use the left and right arrow keys to move among the digits use the up range key to increment numbers and press the down range key to specify alphabetic letters Conf...

Page 39: ...rocedures You can use alternate equipment such as a DC transfer standard and characterized resistors as long that equipment has specifications at least as good as those listed in the table Table 2 1 R...

Page 40: ...alibration DC current calibration AC voltage calibration AC current calibration Distortion calibration Function generator calibration Setting calibration dates Preparing the Model 2015 for calibration...

Page 41: ...to avoid thermal drift which could affect calibration accuracy Procedure Menu choice Procedures Full calibration DCV DCI and ohms ACV and ACI Distortion Function generator ALL DC AC DIST FGEN All com...

Page 42: ...te If your calibrator does not have provisions for turning external sense on and off disconnect the sense leads when external sensing is to be turned off and connect the sense leads when external sens...

Page 43: ...nishes each step The unit will display the CALI BRATING message while calibrating NOTE If your calibrator cannot output the values recommended in Table 2 3 use the left and right arrow keys and the up...

Page 44: ...d in Table 2 4 For each step Set the calibrator to the indicated value and place the unit in operate If the cali brator cannot output the exact resistance value use the Model 2015 left and right arrow...

Page 45: ...calibration proceed to Setting calibration dates Table 2 5 DC current calibration summary Calibration step Calibrator current Allowable range 10mA 100mA 1A 10 00000mA 100 0000mA 1 000000A 9mA to 11mA...

Page 46: ...kHz 10V AC at 1kHz 10V AC at 50kHz 100V AC at 1kHz 100V AC at 50kHz 700V AC at 1kHz 10 00000mV 1kHz 100 0000mV 1kHz 100 0000mV 50kHz 1 000000V 1kHz 1 000000V 50kHz 10 00000V 1kHz 10 00000V 50kHz 100 0...

Page 47: ...alibration summary Distortion calibration 1 FollowingAC current calibration the Model 2015 will prompt you for the first distortion calibration point see Table 2 8 1V AT 137 HZ 2 Connect the low disto...

Page 48: ...ER RANGE R SHIFT CH1 REM TALK LSTN SRQ STAT REL FILT 4W BUFFER MATH REAR SCAN TIMER STEP CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 HOLD TRIG FAST MED SLOW AUTO ERR EXIT ENTER DIGITS RATE REL FILTER TRIG EX...

Page 49: ...unless you choose the YES option Previous calibration constants will be retained if you select NO Remote calibration Follow the steps in this section to perform comprehensive procedures via remote Se...

Page 50: ...ion function by sending this command CAL PROT CODE KI002015 The above command shows the default code KI002015 Substitute the correct code if changed 6 Send the following command to initiate calibratio...

Page 51: ...hen external sensing is to be turned on 2 Perform the calibration steps summarized in Table 2 9 For each step Set the calibrator to the indicated voltage and make sure the unit is in operate Use the r...

Page 52: ...is in operate Use the recommended resistance or the closest available value Send the indicated programming command Change the command parameter if you are using a different calibration resistance tha...

Page 53: ...t if possible Send the indicated programming command Change the current parameter if you are using a different calibration current Wait until the Model 2015 completes each step before continuing NOTE...

Page 54: ...2015 completes each step before continuing Table 2 12 AC voltage calibration programming steps Calibration step Calibrator voltage frequency Calibration command 10mV AC at 1kHz 100mV AC at 1kHz 100mV...

Page 55: ...function generator to output a 1V RMS sine wave at a frequency of 137Hz 3 Send the following command to perform the 137Hz calibration step see also Table 2 14 CAL PROT DIST STEP1 4 Set the function ge...

Page 56: ...ands CAL PROT DATE year month day CAL PROT NDUE year month day For example the following commands assume calibration dates of 12 15 97 and 3 14 98 respectively CAL PROT DATE 1997 12 15 CAL PROT NDUE 1...

Page 57: ...2 15 Recommended equipment for manufacturing calibration Unlocking manufacturing calibration To unlock manufacturing calibration press and hold in the SOURCE key while turning on the power Measuring...

Page 58: ...cal Set the synthesizer to output a 1V RMS 3Hz sine wave Use the left and right arrow keys and the range keys to adjust the display to agree with the synthesizer amplitude you measured previously the...

Page 59: ...te comprehensive calibration procedure discussed earlier in this section See Comprehensive calibration 7 Connect the synthesizer to the Model 2015 INPUT jacks as shown in Figure 2 7 Select the front i...

Page 60: ...3 Routine Maintenance...

Page 61: ...wdriver into the power module by the fuse holder assem bly see Figure 3 1 Gently push in and to the left Release pressure on the assembly and its internal spring will push it out of the power module 2...

Page 62: ...fast blow Keithley part number FU 99 1 Line Voltage Rating Keithley Part No 100 120V 1 2A 250V 5 20 mm slow blow FU 71 200 240V 1 4A 250V 5 20 mm slow blow FU 96 4 Model 2015 1 3 5 2 4 6 VMC EXT TRIG...

Page 63: ...use with a higher current rating than specified or instrument damage may occur If the instrument repeatedly blows fuses locate and cor rect the cause of the trouble before replacing the fuse 4 Install...

Page 64: ...4 Troubleshooting...

Page 65: ...iscretion of the repair technician to select the appropriate tests and documentation needed to troubleshoot the instrument WARNING The information in this section is intended only for qualified servic...

Page 66: ...degrees of disassembly However it is recommended that the Front Panel Tests be performed prior to any disassembly The disassembly instruc tions for the Model 2015 are contained in Section 5 of this ma...

Page 67: ...ooting Power on self test During the power on sequence the Model 2015 will perform a checksum test on its EPROM U156 and U157 and test its RAM U151 and U152 If one of these tests fails the instrument...

Page 68: ...key However the second consecutive press of EXIT aborts the test and returns the instrument to normal operation DISP test The display test allows you to verify that each segment and annunciator in the...

Page 69: ...uitry block diagram Figure 4 6 Sine generator circuitry block diagram Power supply The following information provides some basic circuit theory that can be used as an aid to troubleshoot the power sup...

Page 70: ...a power transformer secondary at F1 and F2 and then routed to the display board Each DC supply uses a rectifier and a capacitive filter and many supplies use an IC regulator Table 4 1 summarizes recti...

Page 71: ...al section via theTXB line to the microcontroller RDI terminal In a similar manner key data is serially sent back to the digital section through the RXB line via TDO The 4MHz clock for the microcontro...

Page 72: ...to the main microprocessor using proprietary encod ing schemes Digital circuitry Refer to Figure 4 2 for the following discussion on digital circuitry Microprocessor U135 is a 68306 microprocessor tha...

Page 73: ...h as handshaking while U160 and U161 provide the necessary buffer ing and drive capabilities Trigger circuits Buffering for Trigger Link input and output is performed by U146 Trigger input and output...

Page 74: ...SSP are open The DC voltage signal is routed through the DCV Divider Q114 and Q136 on to the DCV switch ing circuit Distortion Analog Circuitry See Figure 4 5 Digital Circuitry See Figure 4 2 ADC U16...

Page 75: ...the circuit by turning on Q121 Signal switching and gain for ACV FREQ and ACA is done by the AC Switching Gain circuit which is primarily made up of K102 U102 U103 U105 U112 U118 U111 and U110 Note t...

Page 76: ...igure 4 4 Distortion digital circuitry block diagram ROM U330 OSC DSP U329 J T A G J3 DIGITAL See Figure 4 2 FPGA U327 U312 U313 U316 U317 U318 U319 OPTO ISO OPTO ISO DISTORTION ANALOG CIRCUITRY See F...

Page 77: ...olled by oscillatorY303 DSP reset is per formed by U333 through U327 and U326 ROM U330 stores the firmware code for the DSP JTAG interface J3 is the JTAG interface and it is used for monitoring and de...

Page 78: ...e rest of the DMM measurements see U165 in Figure 4 3 This ADC is a high speed high resolution low distortion sigma delta type The ADC digital output is sent to the DSP through opto isolators shown in...

Page 79: ...is set by the microprocessor through the FPGA U334 and the opto isolators U304 U320 and U321 Attenuator U303 U334 U335 and U302 form the adjustable attenuator that adjusts the sine wave output amplitu...

Page 80: ...d U321 Outputs The Model 2015 has two outputs U305 U306 U307 and U308 form the main sine wave output stage The secondary output may be either an inverted sine wave of the same magnitude and fre quency...

Page 81: ...Step Item component Required condition Remarks 1 2 3 4 5 6 7 Front panel DISP test P1005 PIN 5 P1005 PIN 9 U401 PIN 1 U401 PIN43 U401 PIN 32 U401 PIN 33 Verify that all segments operate 5V 5 37V 5 Goe...

Page 82: ...1 pin 2 U348 pin 3 U349 pin 3 U350 pin 3 Check continuity 120V 240V as required Plugged into live receptacle power on 5V 5 37V 5 15V 5 15V 5 5V 5 5V 3 15V 5 15V 5 5V 5 Remove to check Check power modu...

Page 83: ...pin 90 U135 pin 89 RAM OK ROM OK Digital common 5V Low on power up then goes high Check for stuck bits Check for stuck bits 14 7456MHz Pulse train during RS 232 I O Pulse train during RS 232 I O Pulse...

Page 84: ...ON ON OFF OFF OFF OFF OFF SET SET SET SET SET OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON OFF OFF OFF OFF OFF ON ON ON ON ON ON ON K101 set states Pin 8 switched to Pin 7 Pin 3 switched to Pin 4...

Page 85: ...switched to Pin 7 Pin 3 switched to Pin 4 Pin 8 switched to Pin 9 Pin 3 switched to Pin 2 Range Q101 Q102 Q114 Q136 Q109 K101 Q113 Q105 Q104 Q108 Q121 100 1k 10k 100k 1M 10M 100M ON ON ON ON ON ON ON...

Page 86: ...es U129 that set up the gain for the final amplifier stage U166 Table 4 12 DCV signal multiplexing and gain Table 4 13 ACV and ACA signal multiplexing and gain Range K103 10mA 100mA 1A 3A ON OFF OFF O...

Page 87: ...100 100 100 10 Range Signal U163 U129 pin 1 U129 pin 8 U129 pin 9 Gain U166 100 1k 10k 100k 1M 10M 100M S4 S4 S4 S4 S4 S4 S4 OFF OFF OFF OFF ON ON ON OFF ON ON ON OFF OFF OFF ON OFF OFF OFF OFF OFF OF...

Page 88: ...diagram Table 4 17 Switching device locations Switching devices Analog circuit section see Figure 4 3 Q101 Q102 Q114 Q136 Q109 K101 Q113 Q105 Q104 Q108 Q121 K102 U103 U105 U111 U133 Q120 Q123 Q124 Q12...

Page 89: ...5 Disassembly...

Page 90: ...5 2 Disassembly Introduction This section explains how to handle clean and disassemble the Model 2015 Multimeter Dis assembly drawings are located at the end of this section...

Page 91: ...board traces or components not associated with repair Do not touch areas adjacent to electrical contacts Use dry nitrogen gas to clean dust off PC boards Solder repairs Observe the following precautio...

Page 92: ...build up Typically you will receive these parts in anti static containers made of plastic or foam Keep these devices in their original containers until ready for installation Remove the devices from t...

Page 93: ...these drawings for information about the Keithley part numbers of most mechanical parts in the unit The drawings are located at the end of this section of the manual Front Panel Assembly 2015 040 Cha...

Page 94: ...Each ear is marked RIGHT or LEFT on its inside surface 3 Remove Rear Bezel To remove the rear bezel loosen the two captive screws that se cure the rear bezel to the chassis Pull the bezel away from t...

Page 95: ...embly replace the board and start the IEEE 488 and RS 232 connector nuts and the mounting screw Tighten all the fasteners once they are all in place and the board is correctly aligned 6 Remove the DMM...

Page 96: ...nel 4 Remove the switch pad by pulling it from the front panel Removing power components The following procedures to remove the power transformer and or power module require that the case cover and mo...

Page 97: ...e connect the black ground wire to the mounting stud on bottom of the chassis Be sure to install the bottom case screws to assure a good case to chassis ground connection Input terminal wire connectio...

Page 98: ...rument as explained in Case cover removal 2 The resistors used to select the trigger link lines are located next to the Trigger Link connector as shown in Figure 5 1 The resistors are actually solder...

Page 99: ...firmware 1 Remove the case cover as described earlier in this section 2 Locate U156 EVEN and U157 ODD EPROMs on the DMM 106 board They are the only devices installed in chip carriers sockets CAUTION...

Page 100: ...5 12 Disassembly...

Page 101: ...6 Replaceable Parts...

Page 102: ...sure to include the following information Instrument model number Model 2015 Instrument serial number Part description Component designation if applicable Keithley part number Factory service If the...

Page 103: ...POLYCARBONATE C 482 33 C117 147 151 191 234 237 CAP 1UF 20 50V CERAMIC C 418 1 C120 CAP 270PF 5 100V CERAMIC C 465 270P C121 132 134 140 CAP 220PF 10 100V CERAMIC C 451 220P C123 245 CAP 1000P 10 100...

Page 104: ...F 82 E101 102 SURGE ARRESTOR CG3 1 5L SA 4 J1006 CONN MICRODIN W GND FINGERS CS 792 J1007 CONN RT ANGLE MALE 9 PIN CS 761 9 J1008 CONN RIGHT ANGLE 24 PIN CS 501 J1014 CONN HEADER STRAIGHT SOLDER PIN C...

Page 105: ...125mW METAL FILM R 391 1K R123 RES 73 2K 1 100MW THICK FILM R 418 73 2K R127 RES 33 2K 1 100MW THICK FILM R 418 33 2K R129 RES 215 1 100MW THICK FILM R 418 215 R130 176 177 179 183 186 191 193 336 RES...

Page 106: ...S 470 5 125MW METAL FILM R 375 470 R226 228 235 237 250 252 255 RES 475 1 100MW THICK FILM R 418 475 R234 RES 5 11K 1 100MW THICK FILM R 418 5 11K R238 244 254 293 RES 4 75K 1 100MW THICK FILM R 418 4...

Page 107: ...1B IC 877 U106 109 121 130 134 IC 8 STAGE SHIFT STORE MC14094BD IC 772 U107 108 IC PHOTO DARLINGTON TRANS PS2506L 1 IC 911 U110 IC TRMS TO DC CONVERTER 637JR IC 796 U112 IC J FET OP AMP LF357M IC 966...

Page 108: ...OGRAMMED 2015 803 U158 IC GPIB ADAPTER 9914A LSI 123 U159 IC 5V RS 232 TRANSCEIVER MAX202 IC 952 U160 IC OCTAL INTERFACE BUS 75160 IC 646 U161 IC OCTAL INTER BUS TRANS 75161 IC 647 U163 IC 8 CHANANA M...

Page 109: ...6 3 TANTALUM C 417 22 CR401 402 DIODE MBR0520LT1 RF 103 DS401 DISPLAY DD 52 P1014 CABLE ASSEMBLY CA 123 16A R401 402 403 404 406 409 411 414 416 RES 15k 1 100MW THICK FILM R 418 15K R405 408 410 412 R...

Page 110: ...521 47 C350 CAPACITOR C 473 4700 C353 357 388 389 CAP 01UF 10 50V CERAMIC C 491 01 C358 365 523 524 CAP 100PF 5 100V CERAMIC C 465 100P C367 CAP 22UF 20 25V TANTALUM C 440 22 C368 376 551 558 563 564...

Page 111: ...0 100MW THICK FILM R 418 10 R309 311 313 320 557 RES 100 1 100MW THICK FILM R 418 100 R312 RES 174 1 100MW THICK FILM R 418 174 R314 317 319 339 342 534 535 RES 100 1 100MW THICK FILM R 418 100 R315 3...

Page 112: ...9K R544 RES 7 5K 1 100MW THICK FILM R 418 7 5K R545 RES 1 74K 1 100MW THICK FILM R 418 1 74K R549 RES 3 65K 1 100MW THICK FILM R 418 3 65K R560 RES 0499 1 100MW THICK FILM R 418 0499 R561 RES 26 7K 1...

Page 113: ...MED ROM 2015 805 U331 5A POSITIVE FIXED REGULATOR IC 1202 U332 345 IC SUPPLY VOLT SUPERVISOR TL7705A IC 860 U334 INTEGRATED CIRCUIT SMT IC 1245 U336 338 IC CMOS ANAL SWITCH DG444DY IC 866 U346 PROGRAM...

Page 114: ...22A 2 FOOT RUBBER FE 6 1 FRONT PANEL OVERLAY 2000 303B 1 FRONT REAR SWITCH ROD 2001 322A 1 FUSE HOLDER FH 35 1 1 FUSE 5A 250V FU 71 1 FUSE 3A 250 FU 99 1 1 HANDLE 428 329F 2 HOLDER FERRITE 2001 367A...

Page 115: ...A Specifications...

Page 116: ...o 20kHz2 20Hz to 20kHz THD n 1 5 dB 0 056 or 65dB 100Hz to 20kHz2 20Hz to 20kHz SINAD 1 5dB 65dB 100Hz to 20kHz2 20Hz to 20kHz AC Level 0 13 of reading V rms 0 009 of range 20Hz to 20kHz Distortion Me...

Page 117: ...EQUENCY TEMPERATURE COEFFICIENT 100ppm over operating temperature range SOURCE OUTPUT Waveform Sinewave Amplitude Range 2V rms 50 and 600 or 4V rms HI Z Amplitude Resolution 0 5mV rms 50 and 600 or 1m...

Page 118: ...g 10ppm 0 001 TEMPERATURE TEST CURRENT COEFFICIENT OR BURDEN INPUT 24 HOUR14 90 DAY 1YEAR 0 18 C FUNCTION RANGE RESOLUTION VOLTAGE RESISTANCE 23 C 1 23 C 5 23 C 5 28 50 C VOLTAGE 100 0000 mV 0 1 V 10...

Page 119: ...f range except on 1000V 3A and Diode SPEED AND NOISE REJECTION RMS NOISE RATE READINGS S DIGITS 10V RANGE NMRR12 CMRR13 10 PLC 5 61 2 1 5 V 60 dB 140 dB 1 PLC 50 61 2 4 V 60 dB 140 dB 0 1 PLC 500 51 2...

Page 120: ...00000 A 10 A 90 Day 1 Year 0 35 0 06 0 15 0 06 TEMPERATURE COEFFICIENT8 0 035 0 006 0 015 0 006 HIGH CREST FACTOR ADDITIONAL ERROR of reading 7 CREST FACTOR 1 2 2 3 3 4 4 5 ADDITIONAL ERROR 0 05 0 15...

Page 121: ...5 DETector BANDwidth 300 NPLC 0 01 6 Maximum useful limit with trigger delay 175ms 7 Applies to non sinewaves 5Hz 8 Applies to 0 18 C and 28 50 C TRIGGERING AND MEMORY READING HOLD SENSITIVITY 0 01 0...

Page 122: ...ICATIONS POWER SUPPLY 100V 120V 220V 240V 10 LINE FREQUENCY 45Hz to 66Hz automatically sensed at power up POWER CONSUMPTION 25 VA OPERATING ENVIRONMENT Specified for 0 C to 50 C Specified to 80 R H at...

Page 123: ...to 5 0002V DC current and resistance calculations are performed in exactly the same manner using the pertinent specifications ranges and input signal values Calculating AC characteristics accuracy AC...

Page 124: ...ristics accuracy it can be shown that 0 998815V has an uncertainty of 36 96445 V or 0 998778V to 0 998852V using one year specifications of the 1VDC range Expressing 0 998778V as dBm and expressing 0...

Page 125: ...eading accuracy is 10mV 36 V or 10 036mV to 9 964mV Applying the voltage reading accuracy into the dB equation yields Thus the actual reading accuracy is 60dB 0 031213dB to 60dB 0 031326dB dBm and dB...

Page 126: ...filter ON up to 100 readings Distortion Select 6 digits filter ON up to 100 readings distortion frequencyAUTO autorange ON Optimizing measurement speed The configurations listed below assume that the...

Page 127: ...B Calibration Reference...

Page 128: ...detailed information about the various Model 2015 remote calibration commands Section 2 of this manual covers detailed calibration procedures For information about additional commands to control othe...

Page 129: ...constants to EEROM DATE year month day Send cal date to 2015 DATE Request cal date from 2015 NDUE year month day Send next due cal date to 2015 NDUE Request next due cal date from 2015 DC DC cal steps...

Page 130: ...00V AC at 50kHz step STEP10 700V AC at 1kHz step STEP11 100mA AC at 1kHz step STEP12 1A AC at 1kHz step STEP13 2A AC at 1kHz step1 STEP14 1V AC at 3Hz step1 STEP15 1V AC at 1kHz step1 DIST Distortion...

Page 131: ...fore sending any other comprehensive or manufacturing calibration command The default calibration code is KI002015 NOTES The CODE command should be sent only once before performing either the compre h...

Page 132: ...her DC AC or factory calibration Do not send INIT before each calibration step Example CAL PROT INIT Initiate calibration LOCK CALibration PROTected LOCK Purpose To lock out comprehensive or manufactu...

Page 133: ...ock state SAVE CALibration PROTected SAVE Purpose To save calibration constants in EEROM after the calibration procedure Format cal prot save Parameter None Description The SAVE command stores interna...

Page 134: ...meters must be delimited by commas Examples CAL PROT DATE 1998 12 16 Send cal date 12 16 98 CAL PROT DATE Request cal date NDUE CALibration PROTected NDUE Purpose To send the next calibration due date...

Page 135: ...the front panel input jacks before sending this command Example CAL PROT DC STEP1 Perform short circuit calibration Command Description Parameter limits CALibration PROTected DC STEP1 Front terminal...

Page 136: ...on step Format cal prot dc step3 Cal_voltage Parameter Cal_voltage 9 to 11 V Description STEP3 programs the 10V DC comprehensive calibration step The allow able range of the calibration voltage parame...

Page 137: ...ot dc step6 Cal_resistance Parameter Cal_resistance 900 to 1 1E3 Description STEP6programs the 1k 4 wire resistance comprehensive calibration step The allowable range of the calibration resistance par...

Page 138: ...cal prot dc step9 Cal_resistance Parameter Cal_resistance 900E3 to 1 1E6 Description STEP9 programs the 1M comprehensive calibration step The allowable range of the calibration resistance parameter is...

Page 139: ...from 90E 3 to 110E 3 Use the 100E 3 value whenever possible for best results Example CAL PROT DC STEP11 0 1 Program 100mA step STEP12 CALibration PROTected DC STEP12 Purpose To program the 1A comprehe...

Page 140: ...libration step STEP2 100mV AC at 1kHz calibration step STEP3 100mV AC at 50kHz calibration step STEP4 1V AC at 1kHz calibration step STEP5 1V AC at 50kHz calibration step STEP6 10V AC at 1kHz calibrat...

Page 141: ...ion step 7 10V AC at 50kHz calibration step 8 100V AC at 1kHz calibration step 9 100V AC at 50khz calibration step 10 700V AC at 1kHz calibration step 11 100mA AC at 1kHz calibration step 12 1A AC at...

Page 142: ...calibration steps Apply the 1V RMS 137Hz or 844Hz calibration signal to the INPUT jacks before sending these commands Example CAL PROT DIST STEP1 Perform 137Hz step FGEN STEP1 CALibration PROTected FG...

Page 143: ...scription The AC STEP14 and AC STEP 15 commands program the two manu facturing AC calibration steps The appropriate signal must be connected to the instrument when programming each step as summarized...

Page 144: ...full scale error 406 1k 2 w zero error 407 10k 2 w zero error 408 100k 2 w zero error 409 10M 2 w zero error 410 10M 2 w full scale error 411 10M 2 w open error 412 1k 4 w zero error 413 10k 4 w zero...

Page 145: ...or 463 100 vac full scale error 464 750 vac zero error 465 750 vac full scale error 466 750 vac noise error 467 Post filter offset error 468 1 aac zero error 469 1 aac full scale error 470 3 aac zero...

Page 146: ...tatus byte will be set Use the STB query or serial polling to obtain the status byte then test bit 2 to see if it is set If the EAV bit is set an error has occurred and you can use the SYST ERR query...

Page 147: ...o detect the completion of each calibration step To use OPC to detect the end of each calibration step you must do the following 1 Enable operation complete by sending ESE 1 This command sets the OPC...

Page 148: ...to detect operation complete instead of repeatedly polling the Model 2015 To use this method send both ESE 1 and SRE 32 to the instrument then include the OPC command at the end of each calibration co...

Page 149: ...C Calibration Program...

Page 150: ...EE 488 interface for the computer Two shielded IEEE 488 connecting cables Keithley Model 7007 Software requirements In order to use the calibration program you will need the following software Microso...

Page 151: ...ged modify the CAL PROT CODE parameter accordingly 7 Run the program and follow the prompts on the screen to perform calibration Program C 1 Model 2015 calibration program Model 2015 calibration progr...

Page 152: ...T Connect calibrator to J and INPUT LO jacks GOSUB KeyCheck PRINT 1 OUTPUT 4 Msg PRINT 1 OUTPUT 4 OPER END SELECT IF I 2 AND I 26 THEN GOSUB Settle PRINT 1 OUTPUT 16 C Cmd OPC Send cal command to 2015...

Page 153: ...2 E Err IF E 0 THEN PRINT Err GOTO ErrCheck Display error RETURN Settle Calibrator settling routine DO PRINT 1 OUTPUT 4 ISR Query status register PRINT 1 ENTER 4 INPUT 2 s LOOP UNTIL s AND H1000 Test...

Page 154: ...V 50 KHZ AC STEP7 DATA OUT 100 V 1 KHZ AC STEP8 DATA OUT 100 V 50 KHZ AC STEP9 DATA OUT 700 V 1 KHZ AC STEP10 DATA OUT 100 MA 1 KHZ AC STEP11 DATA OUT 1 A 1 KHZ AC STEP12 DATA OUT 2 A 1 KHZ AC STEP13...

Page 155: ...tage DC current and resistance A 13 A 14 DC volts calibration 2 9 2 18 DC STEP0 B 17 Detecting calibration step completion B 21 Digital circuitry 4 9 Digital circuitry checks 4 20 Disassembly 5 1 Disa...

Page 156: ...placing the AMPS fuse 3 3 Resistance calibration 2 11 2 19 Restoring factory defaults 1 6 Routine maintenance 3 1 S SAVE B 7 Saving calibration constants 2 23 Setting calibration dates and saving cali...

Page 157: ...zero Unstable Overload Will not read applied input Calibration only Certificate of calibration required Data required attach any additional sheets as necessary Show a block diagram of your measuremen...

Page 158: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...

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Keithley 2015, Service Manual

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