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HP E1429A/B 2-Channel Digitizer Servcie Manual

1. ON OFF defaults to ON none Comments e CALibration VALue specifies the voltage to be used as the full scale value for calibration This voltage must be between 85 0 and 99 5 of the full scale reading for the current configuration The 99 5 upper limit ensures that noise will not cause erroneous full scale overload readings 82 CALibration Commands Appendix A Before executing CALibration GAIN do the following steps If you use CONFigure it must be sent first Otherwise several settings such as CALibration SECure STATe and CALibration V ALue are reset to their RST values 1 Disable calibration security with CALibration SECure STATe OFF 2 Use CONFigure or use SENSe VOLTage RANGe and SENSe FUNCtion to place the digitizer to the desired range and port 3 As applicable set the input filter and impedance to the desired settings with INPut FILTer and INPut IMPedance respectively 4 Use CALibration VALue to set the voltage value to be applied This value must be 85 to 99 5 of the full scale input for the range being calibrated Since CONFigure resets this setting do this after using the CONFigure command 5 Connect a standard DC voltage input to the port to be calibrated with the input value the same as specified with the CALibration VALue command MINimum and MA Ximum are not allowed with this command Optional parameters left blank are filled from left to right Therefore you may nee
2. header J1 O path to digitizer J1 O Path from digitizer Turn FORMAT OFF for array data Set PACKed format Query calibration data hold the data Read the calibration constants Strip off leftover line feed Description CALibration lt chan gt DELay calibrates the delay constant for both channels of the A D converter Since this calibration determines a nominal value for 25 C the CAL DELay command should be executed at an ambient temperature as close to 25 C as possible Executable When Initiated no Query Command no Coupled Command no RST Condition unaffected Parameters Parameter Parameter Range of Default Name Type Values Units chan numeric 1or2 none Comments e Before executing this command set both channels to the single ended setting and 1 0235 volt range using RST or CONF1 ARR VOLT 1 1 0 1 followed by CONF2 ARR VOLT 1 1 0 2 This setting was calibrated at the factory Under normal conditions it is not necessary to execute this command again You may need to do this calibration is if the fastest sample rate appears to be 10 MHz instead of 20 MHz especially at higher ambient operating temperatures such as 50 to 60 degrees C e This command calibrates the delay constants for the A D converters on both channels of the digitizer Appendix A CALibration Commands 81 e If CALibration STORe AUTO is ON the new settings will
3. 24 Verification Tests Chapter 3 Test F 1 Self Test Description The self test provides a high degree of confidence that the HP E1429A B digitizer is functional The test uses TST to self test the digitizer and takes about 30 seconds to complete During the test sequence e First all front panel LEDs should turn ON e Next the relays should activate e Then the 50 2 LEDs should turn ON Test Procedure 1 Execute the self test TST Self test command 2 Read the result A 0 indicates that the test passed If a failure occurs the instrument returns a 1 and generates an error message that identifies the cause of the failure NOTE If self test fails do the Electronic Adjustments in Chapter 4 Adjustments and rerun the self test If the test still fails replace the instrument Example Program This program performs a self test on the digitizer IRE STORE SELFTEST DIM Err_msg 255 ASSIGN Dig TO 70905 Assign Dig to digitizer OUTPUT Dig TST Send self test command ENTER Dig Result IF Result lt gt 0 THEN PRINT SELF TEST FAILED PRINT REPEAT OUTPUT Dig SYST ERR ENTER Dig Code Err_msg PRINT Code Err_msg UNTIL Code 0 ELSE PRINT SELF TEST PASSED END IF END Chapter 3 Verification Tests 25 Test F 2 DC CMRR Test Description NOTE Equipment Setup WARNING This test checks the DC common mode rejection ratio DC CMRR for the differential inputs of the digitizer There are two
4. Ne MVA3A4 1429 RE Remove A1 A2 PCAs 4 1429 REMVA1A2 73 Service Chapter 6 Re alr Guidelines to repair and maintain an HP E1429A B digitizer follow Maintenance including Guidelines e ESD precautions e Soldering printed circuit boards e Post repair safety checks CAUTION Do not touch the digitizer edge connector pins at any time unless you are actively using a static free workstation ESD Electrostatic discharge ESD may damage CMOS and other static sensitive Precautions _ devices in the digitizers such as ROM or RAM ICs This damage can range from slight parameter degradation to catastrophic failure When handling digitizer modules follow these guidelines to avoid damaging components e Always use a static free work station with a pad of conductive rubber or similar material when handling module components e After you remove a module from the frame place the module on a conductive surface to guard against ESD damage e Do not use pliers to remove a CMOS device from a high grip socket Instead use a small screwdriver to pry the device up from one end Slowly lift the device up one pair of pins at a time e After you remove a CMOS device from a module place the device onto a pad of conductive foam or other suitable holding material e Ifa device requires soldering be sure the device is placed on a pad of conductive material Also be sure
5. ROBINSON NUGENT INC NEW ALBANY IN US 47150 06776 DUPONT E DE NEMOURS amp CO WILMINGTON DE US 19801 SPECIALTY CONNECTOR CO FRANKLIN IN US 46131 18873 HEWLETT PACKARD CO US 94304 CORPORATE PALO ALTO CA 24931 US 60016 LITTELFUSE INC DES PLAINES IL US 60525 28480 GRAYHILL INC LA GRANGE IL US 61125 ELCO INDUSTRIES INC ROCKFORD IL US 91201 SEASTROM MFG INC GLENDALE CA 75915 81073 83486 86928 Com onent Figures 5 1 and 5 2 show locations of selected replaceable parts for the g p p Locato rs HP E1429A B digitizers Chapter 5 Replaceable Parts 65 S E D o a n im a 3 TION CAL POSI NP USER FROM CAI ERMINAI 64 CHANNEL FET MULTIPLEXER Figure 5 1 Replaceable Mechanical Parts Chapter 5 66 Replaceable Parts LM ice 2 FA E1429 J201 5 NS A O N LO N gt o y sF gt o 9 XA A 227 E Figure 5 2 A1 A4 PCAs Replaceable Parts Replaceable Parts 67 Chapter 5 Notes 68 Replaceable Parts Chapter 5 Chapter 6 Service Introduction WARNING Equipment Required Service Aids Recommended Repair Strategy This chapter contains information to service the HP E1429A B digitizers including recommended repair strategy troubleshooting guidelines and
6. DC Voltage Accuracy Measurements 320 PRINT 330 PRINT Port I 340 PRINT Range Vdc Range J 350 PRINT Input Vdc Input K 360 PRINT 370 PRINT 1 Connect DC source output to Port 380 PRINT 2 Set DC source output to Input K Vdc continued on next page 36 Verification Tests Chapter 3 390 400 410 420 430 440 450 460 IF ABS Input K 70 THEN BEEP PRINT PRINT WARNING HIGH VOLTAGE OUTPUT FROM SOURCE END IF DISP Press Continue when voltage is input PAUSE OUTPUT Dig MEAS amp VAL Chan amp ARR VOLT 100 amp VAL Range J amp DEF amp VAL I amp 470 480 490 500 510 520 530 540 550 560 570 580 590 ENTER Dig Reading Result l J K SUM Reading 100 IF l 1 OR l 2 THEN Delta 1 J K ABS 004 Input K 005 Range J ELSE Delta 1 J K ABS 005 Input K 02 Range J END IF Upper l J K Input K Delta l J K Lower l J K Input K Delta l J K IF Result I J K lt I J K OR Result 1 J K gt Upper I J K THEN Flag 1 J K FAIL GOTO Test fail END IF 600 Next_meas 610 620 630 640 650 660 NEXT K NEXT J 670 Print_res 680 690 700 710 720 730 740 750 760 770 780 CLEAR SCREEN INPUT Do you want to print P or display D the results Ans IF Ans P OR Ans p THEN Ptr_addr 701 INPUT Enter printer address 701 is default Ptr_addr PRINTER IS Ptr_addr ELSE PRINTER IS 1 END IF PRINT HP E1429A B Digitizers DCV Acc
7. Dig CAL amp VAL Chan amp STOR Store new calibration constants OUTPUT Dig CAL SEC STAT ON Turn calibration security ON END Chapter 2 Setting Calibration Values 21 P rotected User This section shows how to read existing protected user data and how to Data enter new protected user data into memory as required As desired you can enter and read information in protected user data memory Since calibration security must be OFF to write to this memory area you can use PUD to store sensitive information such as date of last calibration the number of the last calibration etc PUD reads the current protected user data in IEEE 488 2 definite length block format PUD returns the information regardless of the state of calibration security Example Reading Entering Protected User Data An example program follows to enter data into protected user data memory and to read the result In this program you must enter the proper header and the header must account for all characters and spaces For example in line 90 Last Calibration 17 Feb 1994 has 29 spaces and characters so the header is 229 Use the current calibration security code in line 80 IRE STORE PRO_DATA ASSIGN Dig TO 70905 Assign Dig to 70905 DIM Pro_data 256 OUTPUT Dig CAL SEC STAT OFF E1429 Turn calibration security OFF OUTPUT ODig PUD 229Last Calibration 17 Feb 1994 Enter desired message information OUTPUT Dig CAL SEC STAT O
8. disassembly repair guidelines Do not perform any of the service procedures shown unless you are a qualified service trained person and have read the WARNINGS and CAUTIONS in Chapter 1 Equipment required for HP E1429A B digitizers troubleshooting and repair is listed in Table 1 1 Recommended Test Equipment To avoid damage to the screw head slots use T8 and T10 Torx drivers as described in the Disassembly section in this chapter See Chapter 5 Replaceable Parts for descriptions and locations of HP E1429A B replaceable parts Service notes and service literature for the digitizers may be available through Hewlett Packard For information contact your nearest Hewlett Packard Sales and Support Office The recommended repair strategy for the HP E1429A B digitizers is module replacement e Before replacing an HP E1429A B digitizer check fuses F401 through F407 on the A2 Printed Circuit Assembly PCA and check other replaceable parts listed in Table 5 2 e If the fault can be traced to a part listed in Table 5 2 repair the fault and retest the instrument If not exchange or replace the entire HP E1429A B Individual PCAs cannot be exchanged or replaced e See Shipping Guidelines in Chapter 1 General Information to return an HP E1429A B digitizer to Hewlett Packard Chapter 6 Service 69 T rou b I es h O oti n g To troubleshoot an HP E1429A B digitizer problem you should first Guidelines NOTE Iden
9. the measurement uncertainty is that of the Datron 4708 Test Accuracy Ratio TAR for the digitizers is defined by Maximum Value Input TAR Measurement Uncertainty where Maximum largest amount of variation from the expected reading the input and measurement uncertainty 1s that of the test equipment Datron Standard If a TAR exceeds 10 1 the entry in Table 3 1 is gt 10 1 Appendix B Calculating Digitizer Accuracy 93 Digitizer Accuracy Calculations DC Voltage Accuracy Equations NOTE Example Calculate Single Ended Port DCV Accuracy Example Calculate Differential Port DCV Accuracy For the HP E1429A B digitizers performance verification tests DC voltage accuracy is defined using the 1 year specifications in Appendix A Specifications of the HP El429A B User s Manual The assumed test conditions are e year since the last adjustment e Operating temperature 23 C 5 C e Atleast one hour warmup for the source From Appendix A Specifications of the HP El429A B User s Manual for single ended inputs ports 1 and 2 DC voltage 1 year accuracy 0 4 of reading 0 25 of peak to peak full scale For differential inputs ports 3 and 4 DC voltage 1 year accuracy 0 5 of reading 1 0 of peak to peak full scale For single ended port inputs DC Accuracy is specified for the average of 100 readings with CAL ZERO performed within 24 hours prior to reading in a
10. 0 50546 Vdc If the Datron is set to the 1 0 Vdc range Measurement Uncertainty UV 2 0 x 0 5 2 x 0 4 x 1 2 x 0 5 2 8 uV 2 8E 6 Vdc Thus TAR 0 50546 0 50000 2 8E 6 1950 1 Since this value is gt 10 1 the entry in Table 3 1 is gt 10 1 Example Calculate For this example assume a 5 0 Vdc input to Port 3 or 4 with the digitizer Differential Port TAR set to the 5 1125V to 5 115V range Then from Table 3 1 the Maximum value 5 127 Vdc If the Datron is set to the 10 0 Vdc range Measurement Uncertainty UV 1 0 x 5 0 2 x 0 15 x 10 1 5 x 5 0 15 5 uV 1 55E 5 Vdc Thus TAR 5 127 5 000 1 55E 5 8193 1 Since this value is gt 10 1 the entry in Table 3 1 is gt 10 1 96 Calculating Digitizer Accuracy Appendix B Appendix C Error Messages Introduction Digitizer Error This appendix lists HP E1429A B digitizers error messages Table C 1 lists HP E1429A B digitizers error messages Messages Table C 1 HP E1429A B Error Messages Code Message Description 101 Invalid character Unrecognized character in parameter 102 Syntax error Command missing a space or comma between parameters 103 Invalid separator Parameter is separated by a character other than a comma 104 Data type error The wrong data type number character string expression was used when specifying the parameter 105
11. 1 4 DIM Input 1 10 Range 1 10 DATA 1 0 0 1 0 2 0 5 2 0 5 0 10 0 20 0 50 0 50 0 READ Input DATA 1 0 0 1 0 2 0 5 2 0 5 0 10 0 20 0 50 0 100 0 READ Range FOR Port 1 TO 4 IF Port 1 OR Port 3 THEN Chan 1 continued on next page Factory set logical address Assign Dig to digitizer address Reset instrument Query calibration count shared by both channels Enter calibration count Turn cal security OFF both channels Turn off storage of cal constants Adjust A D converter delay constant both channels Zero offset adjustment for channel 1 Zero offset adjustment for channel 2 Enter voltage source input values Enter digitizer voltage ranges Gain adjustments for all four ports 50 Adjustments Chapter 4 360 IF Port 2 OR Port 4 THEN Chan 2 370 IF Port 1 OR Port 2 THEN Nbr 4 380 IF Port 3 OR Port 4 THEN Nbr 10 390 FOR l 1 TO Nbr 400 Retry 410 CLEAR SCREEN 420 PRINT HP E1429A B Digitizer Gain Adjustments 430 PRINT 440 PRINT Port Port Range Range l Vdc 450 PRINT 460 IF Port 1 OR Port 2 THEN 470 PRINT 1 Connect DC source output to Port Port 480 PRINT 2 Set DC source output to Input l Vdc 490 ELSE 500 PRINT 1 Connect DC source output to Port Port HI 510 PRINT 2 Set DC source output to Input l Vdc 520 ENDIF 530 IF 1 10 THEN 540 PRINT 550 PRINT WARNING 560 PRINT 570 PRINT The input for the 100V range is 50 Vdc NOT 580 PR
12. 10 225 7 7 24 6 76 7 8E 5 gt 10 1 to 3 3 22 2 78 6 2E 5 gt 10 1 10 230 3 2 78 3 22 6 2E 5 gt 10 1 7 6 76 7 24 7 8E 5 gt 10 1 20 45 14 14 48 13 32 1 1E 4 gt 10 1 to 6 6 44 5 56 7 4E 5 gt 10 1 20 46 6 5 56 6 44 7 4E 5 gt 10 1 14 13 52 14 48 1 1E 4 gt 10 1 51 125 35 36 2 33 8 1 9E 4 gt 10 1 to 15 16 1 13 9 1 1E 4 gt 10 1 51 15 15 13 9 16 1 1 1E 4 gt 10 1 35 33 8 36 2 1 9E 4 gt 10 1 102 25 70 72 4 67 6 3 3E 4 gt 10 1 to 30 32 2 27 8 1 7E 4 gt 10 1 102 30 30 27 8 32 2 1 7E 5 gt 10 1 70 67 6 72 4 3 3E 4 gt 10 1 Chapter 3 Performance Tests 45 Notes 46 Performance Tests Chapter 3 Chapter 4 Adjustments Introduction The procedures in this chapter show how to perform electronic and mechanical adjustments for the HP E1429A B digitizers including e Electronic Adjustments A D converter delay constant zero offset adjustments Channel gain adjustments e Mechanical Adjustments AC common mode rejection ratio AC CMRR Flatness adjustments Adjustments Guidelines Table 4 1 summarizes suggested adjustments procedures for the HP E1429A B digitizers Note that the adjustments MUST be done in the order listed above electronic adjustments followed by mechanical adjustments Table 4 1 HP E1429A B Digitizers Adjustment Guidelines If this test fails Do these adjustments After you do the adjustments Test F 1 Self Test Electronic
13. Loop for channels I and 2 110 FOR Input 1 TO 2 Loop for 1 kHz and 100 kHz inputs 120 CLEAR SCREEN 130 IF Input 1 THEN 140 PRINT Flatness Adjustments Port Chan 2 HI 150 PRINT 160 PRINT 1 Connect AC source to Port Chan 2 HI 170 PRINT 2 Connect BNC shorting cap to Port Chan 2 LO 180 PRINT 3 Set AC source output to 16 0 Vac PP 190 ELSE 200 PRINT Flatness Adjustments Port Chan 2 LO 210 PRINT 220 PRINT 1 Connect AC source to Port Chan 2 LO 230 PRINT 2 Connect BNC shorting cap to Port Chan 2 HI 240 PRINT 3 Set AC source output to 16 0 Vac PP 250 END IF 260 DISP Press Continue when ready 270 PAUSE 280 Retry 290 CLEAR SCREEN 300 FOR Freq 1 TO 2 310 IF Freg 1 THEN PRINT Set AC source output to 990 Hz 320 IF Freg 2 THEN PRINT Set AC source output to 99990 Hz 330 DISP Press Continue when ready PAUSE CLEAR SCREEN Chapter 4 Adjustments 61 390 OUTPUT Dig MEAS amp VAL Chan amp ARR VOLT 1000 Make 1000 measurements on the 10 0 DEF amp VAL Chan 2 amp specified port with the digitizer set to 10 0V range 400 ENTER ODig A Store 1000 readings 410 IF Freq 1 THEN Rms1 ABS MAX A SQRT 2 Compute rms value at 1 kHz 420 IF Freq 2 THEN Rms2 ABS MAX A SQRT 2 Compute rms value at 100 kHz 430 NEXT Freq 440 IF Rms2 Rms1 THEN GOTO Compl Avoid potential divide by zero error 450 Db 20 LGT Rms2 Rms1 Compute relative gain in dB 460 470 480 490 IF Db lt 1 T
14. Next K continued on next page 38 Verification Tests Chapter 3 1200 CLEAR SCREEN 1210 IF Next K E OR Next K e THEN GOTO Print_res 1220 IF Next K R OR Next K r THEN 1230 Flag l J K 1240 GOTO Retry 1250 END IF 1260 IF Next K N OR Next K n THEN 1270 GOTO Next_meas 1280 ELSE 1290 DISP You entered an incorrect letter Please reenter desired action 1300 GOTO Reenter 1310 END IF 1320 1330 1340 1350 Err_msg 1360 CLEAR SCREEN 1370 BEEP 1380 PRINT Error messages 1390 PRINT Correct errors listed and then rerun this program 1400 PRINT 1410 REPEAT 1420 OUTPUT Dig SYST ERR 1430 ENTER Dig Err_msg 1440 PRINT Err_msg 1450 UNTIL Err_msg 0 No error 1460 STOP 1470 End_prog 1480 END Typical Result HP E1429A B Digitizers DC Accuracy Test Date 11 Feb 1994 Time 14 30 01 Port Range Input Minimum Measurement Maximum Pass Fail Vdc Vdc Vdc Vdc Vdc 1 10230 07 07079 07001 06921 4 102 30000 70 00 67 60400 69 91 72 39600 Chapter 3 Verification Tests 39 Pe rfo rmance Table 3 1 HP E1429A B Digitizers Performance Test Record is a form T R r you can copy and use to record performance verification test results for est eee d the digitizers This table shows digitizer instrument accuracy Datron 4708 source measurement uncertainty and test accuracy ratio TAR values See Appendix B Calculating Digitizer Acc
15. Test PRINT PRINT 1 Connect AC source to Port Chan 2 HI and LO PRINT 2 Set AC source output to 20 0 Vac PP 999990 Hz DISP Press Continue when ready to start PAUSE CLEAR SCREEN continued on next page Chapter 3 Verification Tests 31 200 210 OUTPUT Dig MEAS amp VAL Chan amp ARR VOLT 1000 Take 1000 readings on specified port 0 1 DEF amp VAL Chan 2 amp with digitizer set to 0 1V range 220 ENTER ODig Value Enter 1000 readings 230 240 250 260 FOR l 1 TO 1000 270 A l Value l 2 280 NEXT I 290 Std_dev SQR 1000 0 SUM A SUM Value 2 9 9999E 5 Compute standard deviation 300 Cmrr 20 0 LGT 7 0714356 Std_dev Compute AC CMRR 310 IF Chan 1 THEN Cmrr1 Cmrr 320 IF Chan 2 THEN Cmrr2 Cmrr 330 NEXT Chan 340 350 360 370 PRINT AC Common Mode Rejection Ratio CMRR Test 380 PRINT 390 PRINT Channel 1 AC CMMR DROUND Cmrr1 3 dB 400 PRINT Channel 2 AC CMMR DROUND Cmrr2 3 dB 410 END Typical Result A typical result follows AC Common Mode Rejection Ratio CMRR Test Channel 1 AC CMMR 84 1 dB Channel 2 AC CMMR 82 4 dB 32 Verification Tests Chapter 3 Operation The operation verification test for the HP E1429A B digitizers is the same Verifi c atio n as the performance verification test except that only one measurement per range for each port is made as listed in the following table Test HP
16. be stored to nonvolatile calibration RAM Calibration security must be OFF CAL SEC STAT OFF for the new constants to be permanently stored in nonvolatile calibration RAM CALibration COUNt is incremented with this command when the values are stored to calibration RAM CALibration SECure STATe CALibration STORe CALibration STORe AUTO Related Commands Example Adjust calibration delay CAL SEC STAT OFF E1429 Set calibration security OFF assuming factory code of E1429 Adjust calibration delay for both channels CAL DEL CALibration GAIN Description CALibration lt chan gt GAIN lt readings gt lt period gt lt flag gt performs a gain calibration using a specified number of readings and sample rate A linearity calibration is also done on the 1V measurement range with the single ended port port 0 or 2 This linearity calibration may be disabled by setting the flag parameter to OFF Omitting the optional flag parameter will cause linearity calibration to be performed Executable When Initiated no Query Command no Coupled Command no RST Condition none Parameters Parameter Name Parameter Type Range of Values Default Units chan numeric 1or2 none readings numeric 100 to 32767 DEFault 1000 none period numeric reference period to reference period 4E8 DEFault 1 0E 4 seconds flag boolean
17. calibration constants will be A 12 lt mode gt automatically stored when commands such as CAL GAIN and CAL ZERO complete CALibration lt chan gt VALue lt number gt Specifies voltage level to be supplied at input A 13 Value is then used in subsequent CAL GAIN or CAL ZERO commands CALibration lt chan gt ZERO lt readings gt Performs a zero offset adjustment using the A 14 lt period gt lt mode gt specified number of readings and sample rate PUD lt mask gt Store retrieve data in nonvolatile protected user A 16 data area Appendix A CALibration Commands 77 CALibration COUNt Description Parameters Comments Related Commands Example CALibration lt chan gt COUNt returns the number of times the digitizer has been calibrated Executing CAL GAIN CAL ZERO or CAL STORe increments the count so CALibration COUNt can be used to detect accidental or unauthorized HP E1429A B calibrations Executable When Initiated yes Query Command query only Coupled Command no RST Condition unaffected Parameter Parameter Range of Default Name Type Values Units chan numeric 1or2 none Before using your digitizer query the calibration count to determine the initial value You may want to record and store the initial count value The digitizer stores the calibration count in nonvolatile calibration RAM that remains even when
18. disk in the disk drive select the disk drive as the primary drive type LOAD filename and press RUN For example to run the HP E1429A B Self Test Test F 1 in Chapter 3 load the disk and type LOAD SELFTEST Then press RUN to run the program The following table summarizes Service Programs disk contents HP E1429A B Service Programs Chap Category filename Description 2 Calibration Security CAL_CODE Allows user to set new calibration code Calibration Constants READ_CAL Reads the existing calibration count and constants LOAD_CAL Allows user to enter new calibration constants Protected User Data PRO_DATA Allows user to enter data into protected user data memory 3 Functional Verification SELFTEST Performs a digitizer self test Tests DC_CMRR Checks DC common mode rejection ratio for 10 Vdc input AC_CMRR Checks AC common mode rejection ratio for 20 Vac input Performance PERFTEST Measures DCV inputs for all channels and checks inputs Verification Test against specification limits 4 Electronic Adjustments ADJUST Performs A D converter delay constant adjustment zero offset adjustment and channel gain adjustments for chan 1 and 2 Mechanical Adjustments AC_ADJS Allows user to minimize the differential channel voltage offset by adjusting the AC CMRR to maximum FLATNESS Allows user to adjust each channel for maximum flat frequency response maximum flatness Chapter 1 General Information 11 Recom me nded Se
19. finished responding to a query command 420 Query UNTERMINATED The controller computer attempted to read a query response from the digitizer without having first sent a complete query command 430 Query DEADLOCKED The digitizer s input and output buffers are full and the digitizer cannot continue 440 Query UNTERMINATED Occurs when the IDN query is not the last query executed in a after indefinite response command string 1002 Cal security enabled Calibration security must be disabled to calibrate the digitizer to read or write calibration data to change the security code or to change protected user data 1004 Cal write fail Writing calibration or protected user data PUD to nonvolatile memory failed 1005 Error during CAL An error occurred during calibration Refer to the statement appended to this message for a description of the error 1007 Cal security defeated A jumper was moved to defeat calibration security 1008 Error during zero cal An error occurred during calibration of the zero offset Refer to the statement appended to this message for a description of the error 1009 Error during gain cal An error occurred during gain calibration Refer to the statement appended to this message for a description of the error 1010 Error during linearity cal An error occurred during linearity calibration Refer to the statement appended to this message for a description of the error 1015 A D control reg not resp The serial interface
20. new security code on Table 2 1 if desired and store the result in a secure place NOTE If you do not know the current calibration code but want to disable calibration security you must disassemble the instrument and reset jumpers See Defeating Calibration Security for procedures if this is required Example Setting New Calibration Security Code An example program follows to allow you to set a new calibration security code Note that the new calibration security code applies to both channel 1 and channel 2 If the existing calibration security code is not E1429 change line 40 to reflect the new code For example if the desired new code is NEW_CODE change line 40 to 40 OUTPUT Dig CAL SEC STAT OFF NEW_CODE RE STORE CAL_CODE 20 30 ASSIGN Dig TO 70905 Assign Dig to 70905 40 OUTPUT Dig CAL SEC STAT OFF E1429 Disable cal security on both channels assuming factory set security code 50 Retry 60 CLEAR SCREEN 70 INPUT Enter new calibration security code New_code User enters new security code 80 PRINT New calibration code New_code Display new code 90 INPUT Is this code correct Y N Ans User verification of new code 100 IF Ans Y OR Ans y THEN 110 GOTO Correct 120 ELSE 130 GOTO Retry Reenter security code if incorrect 140 ENDIF 150 Correct 160 OUTPUT Dig CAL SEC CODE New_code New security code stored 170 OUTPUT Dig CAL SEC STAT ON Reenable cal security on
21. power if turned OFF Both channels share the same counter so channel 1 and channel 2 return the same result The count increments whenever either channel stores calibration data to memory Maximum count value is 2 147 483 647 after which the count returns to 0 Executing CALibration GAIN or CALibration ZERO with calibration security disabled CALibration SECure STATe OFF and with CALibration STORe AUTO ON increments the calibration count With CALibration STORe AUTO ON a complete calibration of all input ranges increments the number by several counts By setting CALibration STORe AUTO to OFF you can defer storing calibration constants until CALibration STORe is sent CALibration GAIN CALibration SECure STATe CALibration STORe CALibration STORe AUTO CALibration ZERO Query Calibration Count CAL COUN Query calibration count 78 CALibration Commands Appendix A CALibration DATA Description CALibration lt chan gt DATA block data gt sets queries calibration constants CAL DATA sends calibration constants to the digitizer in indefinite or definite length arbitrary block format CAL DATA returns current calibration constant values in definite length arbitrary block format Executable When Initiated no Query Command yes Coupled Command no RST Condition none Parameters Parameter Parameter Range of Default Name Type Values Units chan numeric 1or2 none block
22. register was not working properly at power on 1016 Illegal during LBUS or VME The command cannot be executed while a VME bus or Local bus memory transfer data transfer is in progress 1017 Battery too low data may Battery does not have sufficient charge to maintain memory over be lost an extended period Error occurs when readings are taken when the battery is enabled disabled or during the self test 1018 Battery backed data corrupt Error is due to low battery charge or if the battery is enabled after readings are in memory 1213 Illegal when initiated Command cannot be initiated while digitizer is INITiated 2003 Memory addres incorrect Address specified by DIAG POKE or DIAG PEEK is not valid 2004 Invalid address for Attempting a 32 bit read from an odd numbered address 32 bit access 2007 Bus error Error during DIAG POKE or DIAG PEEK 100 Error Messages Appendix C
23. setting 35 offset for differential 2046 V range 5 A to D chip internal setting 36 gain msb for differential 2046 V range 6 linearity bit 5 left 37 gain Isb for differential 2046 V range 7 linearity bit 5 right 38 offset for differential 5115 V range 8 linearity bit 6 left 39 gain msb for differential 5115 V range 9 linearity bit 6 right 40 gain Isb for differential 5115 V range 10 linearity bit 7 left 41 offset for differential 1 0230 V range 11 linearity bit 7 right 42 gain msb for differential 1 0230 V range 12 linearity bit 8 left 43 gain Isb for differential 1 0230 V range 13 linearity bit 8 right 44 offset for differential 2 046 V range 14 linearity bit 9 left 45 gain msb for differential 2 046 V range 15 linearity bit 9 right 46 gain Isb for differential 2 046 V range 16 linearity bit 10 left 47 offset for differential 5 115 V range 17 linearity bit 10 right 48 gain msb for differential 5 115 V range 18 gain msb 49 gain Isb for differential 5 115 V range 19 gain Isb 50 offset for differential 10 230 V range 20 conversion delay adjust 51 gain msb for differential 10 230 V range 21 trigger level negative 52 gain Isb for differential 10 230 V range 22 trigger level positive 53 offset for differential 20 46 V range 23 offset for single ended 10230 V range 54 gain msb for differential 20 46 V range 24 gain msb for single ended 10230 V range 55 gain Isb for differential 20 46 V range 25 gain Isb for single ended 10230 V range 56 offset fo
24. specifications are the performance standards or limits against which the instrument may be tested Figure 1 2 shows Hewlett Packard serial number structure HP E1429A B digitizers covered by this manual are identified by the serial number prefixes listed on the title page Hewlett Packard Serial Nu er YYYYY Serial Number Prefix Identifies a series of identical instruments Country of Origin A United States mber Suffix Serial Nu Assigned sequentially to each instrument SERIAL Figure 1 2 Hewlett Packard Serial Numbers Options There are no options for the HP E1429A B digitizers However the HP E1429B digitizer includes a Local Bus that is not available in the HP E1429A digitizer 10 General Information Chapter 1 Operating Sto rage The HP El429A B digitizers should be stored in a clean dry environment Environments The following table shows recommended operating shipping environments Service Programs for the digitizers Operating Shipping Environments Temperature Relative Humidity Operating Environment 0 C to 55 C lt 65 0 C to 40 C Storage Shipment 40 C to 75 C lt 65 0 C to 40 C An AP El429A B Service Programs disk is shipped with this manual The Disk programs on the disk are in LIF format with the program filename shown in line 10 of each program To run a program load the
25. start adjustments PAUSE CLEAR SCREEN 210 Read 220 OUTPUT Dig MEAS amp VAL Chan amp ARR VOLT 1000 Take 1000 readings on specified port 0 1 DEF amp VAL Chan 2 amp with digitizer set to 0 1V range 230 240 250 260 270 280 290 300 310 320 ENTER ODig Value Enter 1000 readings FOR l 1 TO 1000 Loop to calculate error values A l Value l 2 Calculate error values NEXT Std_dev SQR 1000 0 SUN A SUM Value 2 9 9999E 5 Calculate std deviation of errors Cmrr 20 0 LGT 7 0714356 Std_dev Compute AC CMRR continued on next page Chapter 4 Adjustments 57 330 340 350 PRINT TABXY 1 1 AC CMRR Adjustments for Channel Chan 360 IF Chan 1 THEN 370 PRINT TABXY 1 4 1 Adjust C306 for maximum CMRR value Channel I user adjustments 380 PRINT TABXY 1 5 2 Press Return key for Channel 2 adjustments 390 ENDIF 400 IF Chan 2 THEN 410 PRINT TABXY 1 4 1 Adjust C406 for maximum CMRR value Channel 2 user adjustments 420 PRINT TABXY 1 5 2 Press Return key to end this program 430 ENDIF 440 PRINT TABXY 1 8 AC Common Mode Rejection Ratio DROUND Cmrr 3 dB 450 PRINT TABXY 1 5 Cmrr 65 10 CHR 252 CHR 32 460 PRINT TABXY 1 11 70dB 75dB 80dB 85dB 90dB 470 ON KBD GOTO Compl Go to next channel or end program when user presses keyboard key 480 GOTO Read Loop until user presses keyboard key 490 Compl 500 NEXT Chan 510 CLEAR SCREEN 520 E
26. steps to this test First an input of 0 0 Vdc is applied simultaneously to the HI and LO inputs of differential port 3 or port 4 with the digitizer set to the 0 1 V range The differential input value difference between the HI and LO port readings is measured by the digitizer we ll call this value Vos Next an input of 10 0 Vdc is applied simultaneously to the HI and LO inputs of differential port 3 or port 4 with the digitizer set to the 0 1V range The differential input value difference between the HI and LO port readings is measured by the digitizer we ll call this value Vavg The DC CMRR is then computed using the following formula The result should be a DC CMRR gt 68 dB 10 0 dc_cmrr 20 log 10 hee Vel Vave Z Vos If the DC CMRR test fails CMRR lt 68 dB perform the Electronic Adjustments in Chapter 4 Adjustments and rerun the test If the test still fails replace the digitizer e Set up the equipment as shown in Figure 3 1 e Set DC source output to 0 0 Vdc The DC Standard Datron 4708 Option 10 can produce dangerous voltages that are present on the terminals Do not touch the front or rear panel terminals unless you are sure no dangerous voltage is present 26 Verification Tests Chapter 3 oY HA ol ye E74298 Figure 3 1 DC CMRR Test Setup Bill El Q c WW Test Procedure 1 Make Channel 1 meas
27. the input This voltage value is then used in subsequent CALibration GAIN or CALibration ZERO commands Executable When Initiated no Query Command yes Coupled Command no RST Condition number 1 0185 Parameters Parameter Parameter Range of Default Name Type Values Units chan numeric 1or2 none number numeric 101 80 to 101 85 volts Comments e The following table shows allowable CALibration V ALues closest to full scale for the specified voltage range Maximum Gain Voltage Range Allowable Calibration Values V Volts Ports 10180 and 10185 0 1023 1 2 3 4 2036 and 2037 0 2046 1 2 3 4 5090 and 50925 0 5115 1 2 3 4 1 0180 and 1 0185 1 023 1 2 3 4 2 036 and 2 037 2 046 3 4 5 090 and 5 0925 5 115 3 4 10 180 and 10 185 10 23 3 4 20 360 and 20 370 20 46 3 4 50 900 and 50 925 51 15 3 4 101 80 and 101 85 102 3 3 4 lt 48 925 and gt 48 975 102 3 3 4 Appendix A CALibration Commands 89 Related Commands e The digitizer cannot distinguish between a value which is exactly full scale and an overload both cases generate the same measured value Therefore the voltage specified for CALibration VALue must be at least 85 of full scale and cannot be closer than 10 counts from absolute full scale approximately 99 5 of full scale Calibration values on the 102 35 volt range have a special low end allowed so that vo
28. you the pad and the soldering iron tip are grounded to the device Apply as little heat as possible when soldering Soldering Printed The etched circuit boards on digitizer module printed circuit assemblies Circuit Boards PCAs have plated through holes that allow a solder path to both sides of the insulating material Soldering can be done from either side of the board with equally good results When soldering to any circuit board keep in mind the following guidelines 74 Service Chapter 6 CAUTION Do not use a sharp metal object such as an awl or twist drill since sharp objects may damage the plated through conductor e Avoid unnecessary component unsoldering and soldering Excessive replacement can result in damage to the circuit board and or adjacent components e Do not use a high power soldering iron on etched circuit boards as excessive heat may lift a conductor or damage the board e Use a suction device or wooden toothpick to remove solder from component mounting holes When using a suction device be sure the equipment is properly grounded to prevent electrostatic discharge from damaging CMOS devices Post Repair Safety After making repairs to digitizer components inspect the device for any Checks _ Signs of abnormal internally generated heat such as discolored printed circuit boards or components damaged insulation or evidence of arcing Determine and correct the cause of the condition Then run the power on s
29. 1 3 38 3 62 7 24 6 76 3 22 2 78 2 78 3 22 6 76 7 24 14 48 13 32 6 44 5 56 5 56 6 44 13 52 14 48 36 2 33 8 16 1 13 9 13 9 16 1 33 8 36 2 72 4 67 6 32 2 27 8 27 8 32 2 67 6 72 4 44 Performance Tests Chapter 3 Table 3 1 HP E1429A B Digitizers Performance Test Record Page 5 of 5 Test 3 1 DC Voltage Measurement Accuracy Port 4 Measurements All values in Vdc Range Input Minimum Measured Maximum M U TAR 0 10225 0 07 0 0724 0 0676 1 1E 6 gt 10 1 to 0 03 0 0322 0 0278 9 2E 7 gt 10 1 0 10230 0 03 0 0278 0 0322 9 2E 7 gt 10 1 0 07 0 0676 0 0724 1 1E 6 gt 10 1 0 2045 0 15 0 1548 0 1452 1 4E 6 gt 10 1 to 0 06 0 0644 0 0556 1 0E 6 gt 10 1 0 2046 0 06 0 0556 0 0644 1 0E 6 gt 10 1 0 15 0 1452 0 1548 1 4E 6 gt 10 1 0 51125 0 35 0 362 0 338 2 2E 6 gt 10 1 to 0 15 0 161 0 139 1 4E 6 gt 10 1 0 5115 0 15 0 139 0 161 1 4E 6 gt 10 1 0 35 0 338 0 362 2 2E 6 gt 10 1 1 0225 0 7 0 724 0 676 4 8E 6 gt 10 1 to 0 3 0 322 0 278 3 8E 6 gt 10 1 1 0230 0 3 0 278 0 322 3 8E 6 gt 10 1 0 7 0 676 0 724 4 8E 6 gt 10 1 2 045 1 4 1 448 1 352 6 5E 6 gt 10 1 to 0 6 0 644 0 556 4 5E 6 gt 10 1 2 046 0 6 0 556 0 644 4 5E 6 gt 10 1 1 4 1 352 1 352 6 5E 6 gt 10 1 5 1125 3 5 3 62 3 38 1 2E 5 gt 10 1 to 1 5 1 61 1 39 6 8E 6 gt 10 1 5 115 1 5 1 39 1 61 6 8E 6 gt 10 1 3 5 3 38 3 62 1 2E 5 gt 10 1
30. 10 0 Vdc 120 DISP Press Continue when ready 130 PAUSE 140 CLEAR SCREEN 150 160 Compute Avg Value for OV Input Vos 170 180 OUTPUT Dig MEAS amp VAL Chan amp ARR VOLT 100 Measure differential input on channel 0 1 DEF amp VAL Chan 2 amp lor2 190 ENTER Dig A Enter results 200 Vos ABS SUM A 100 Find avg value of 100 OV inputs 210 PRINT Set DC source output to 10 0 Vdc 220 DISP Press Continue when ready 230 PAUSE 240 CLEAR SCREEN 250 260 Compute Avg Value for 10V Input Vavg 270 280 OUTPUT Dig MEAS amp VAL Chan amp ARR VOLT 100 Measure differential input on channel 0 1 DEF amp VAL Chan 2 amp lor2 290 ENTER ODig B Enter results 300 Vavg ABS SUM B 100 Find avg value of 100 10V inputs 310 320 Compute DC CMRR 330 340 Cmrr 20 LGT 10 0 ABS Vavg Vos Compute CMRR based on 10 Vdc and OVdc inputs 350 IF Chan 1 THEN Cmrr1 Cmrr Store channel I results 360 IF Chan 2 THEN Cmrr2 Cmrr Store channel 2 results 370 NEXT Chan 380 continued on next page 28 Verification Tests Chapter 3 PRINT DC Common Mode Rejection Ratio CMRR Test PRINT PRINT Channel 1 DC CMRR DROUND Cmrr1 3 dB Display channel 1 results PRINT Channel 2 DC CMRR DROUND Cmrr2 3 dB Display channel 2 results END A typical result is DC Common Mode Rejection Ratio CMRR Test Channel 1 DC CMRR 84 8 dB Channel 2 DC CMRR 82 9 dB Test F 3 A
31. 15 0 35 0 7 Port 3 0 07 0 15 0 35 0 7 1 4 3 5 7 14 35 70 Inputs 0 03 0 06 0 15 0 3 0 6 ES 3 6 15 30 0 03 0 06 0 15 0 3 0 6 1 5 3 6 15 30 0 07 0 15 0 35 0 7 1 4 3 5 7 14 35 70 Port 4 0 07 0 15 0 35 0 7 1 4 3 5 7 14 35 70 Inputs 0 03 0 06 0 15 0 3 0 6 1 5 3 6 15 30 0 03 0 06 0 15 0 3 0 6 1 5 3 6 15 30 0 07 0 15 0 35 0 7 1 4 3 5 7 14 35 70 Chapter 3 Verification Tests 35 Example Program This program measures the DC input voltage for each value in the preceeding table and displays the results RE STORE PERFTEST 20 30 40 50 Addr 70905 60 INPUT Enter digitizer logical address default 70905 Addr 70 ASSIGN Dig TO Addr 80 DISP CHR 129 90 DIM Input 1 40 Range 1 10 Reading 1 100 Result 1 4 1 10 1 112 100 DIM Lower 1 4 1 10 1 112 Delta 1 4 1 10 1 112 110 DIM Upper 1 4 1 10 1 112 Flag 1 4 1 10 1 112 4 120 DATA 1023 2046 5115 1 023 2 046 130 DATA 5 115 10 23 20 46 51 15 102 3 140 READ Range 150 DATA 07 03 03 07 15 06 06 15 35 15 15 35 160 DATA 7 3 3 7 1 4 6 6 1 4 3 5 1 5 1 5 3 5 170 DATA 7 3 3 7 14 6 6 14 35 15 15 35 70 30 30 70 180 READ Input 190 200 210 220 FOR l 1 TO 4 Iports 230 IF l 1 OR l 3 THEN Chan 1 240 IF l 2 OR 4 THEN Chan 2 250 IF l 1 OR 2 THEN Nbr 4 260 IF l 3 OR l 4 THEN Nbr 10 270 FOR J 1 TO Nbr lranges 280 FOR K 4 J 3 TO 4 J linputs 290 Retry 300 CLEAR SCREEN 310 PRINT
32. 19 Reading Calibration Constants gt ss css cossens RRR REDE EER RR RR RG 19 Setting New Calibration Constants 226504 see eee ew OR eS He es w 21 Protected User Dein ne aige AIRNE Ae AC RS ab RANA We Re eke Ar ab E 22 Chapter 3 Verification Tests so sa saastest ora AAA 23 OEO ari A A ES SE Oe 23 Test Conditions Procedutes s A A oS 23 PeriormanceTest Record ocio 23 Verification Test IEXADID ES lt lt po oo 23 Funchonal Verilticaon TES corras A a SS 24 Operation Verification Test corporal 33 Performance Venlication TeSt se ssa vanidad dia 33 Performance Test REGOLA e ew es dpr AC Ce Tag ar a a A EOS AR RES 40 as Tet Lite sa a ek aea III 40 Measurement Uncertainty 2 46646 a koe ROE RE HR Ree e 40 Test Accuracy Raho TAR cirios eR ES REREAD SHORES 40 HP E1429A B 2 Channel Digitizer Service Manual Contents 1 Chapter 4 Adjustments so RR RR CH RC A EEE EHO RED OE RH OS 47 ical i a ee a a ee ee RIOR RA 47 Adjustments Tds sacar ek aS SA OARS AES SEER EERE a 47 Adjustments Environment e ee GE ERE RR EERE HH ERS 47 Making Electrome Adjustment ios correr bee owe eR EES EHS 48 DECOM sa he PSEA Me ERE AAA A 48 Eerie Sc 62454264262 Se bebe eC Re ni D SS bee SSeS 48 Adjustment Procedure 444 424 444 804 4418 b oes A 49 Example PEE Lars De eho Ae ee A Oe OS 50 Typa REME sa 63 ee kde E ea Es EM ee ES 33 Making Mechanical Adjustments scr 4 42658 4 466 be dd Re 55 AC Common Mode Rejec
33. 2 1 147 index 1 939 index 61 307 For channel 2 index 0 150 index 1 939 index 61 310 Since this program generates 30 adjustments 2 for zero offset adjustments 8 for channel gain adjustments on Ports 1 and 2 and 20 for channel gain adjustments on Ports 3 and 4 the difference between the starting and ending calibration count should be 30 counts Chapter 4 Adjustments 53 HP E1429A B Digitizer Calibration Constants Date 17 Feb 1994 Time 10 15 23 Starting calibration count 189 Ending calibration count 219 Channel 1 Calibration Constants 147 939 533 336 819 450 21 59 30 58 21 88 15 57 21 99 42 43 387 310 117 2047 2048 328 397 300 306 407 290 290 413 284 343 385 312 310 387 310 293 391 306 277 390 307 279 393 304 279 397 300 281 391 306 280 392 305 281 395 302 281 390 307 Channel 2 Calibration Constants 150 939 533 336 819 450 21 59 30 58 21 88 15 57 21 99 42 43 387 310 117 2047 2048 328 397 300 306 407 290 290 413 284 343 385 312 310 387 310 293 391 306 277 390 307 279 393 304 279 397 300 281 391 306 280 392 305 281 395 302 281 390 310 54 Adjustments Chapter 4 Making Mechanical Adjustments NOTE AC Common Mode Rejection Ratio Adjustments Description This section shows how to make mechanical adjustments for the HP E1429A B digitizers including e AC Common Mode Rejection Ratio AC CMRR Adju
34. 480 E1400 84105 HDL2 E1400 84106 1 EXT HANDLE KIT TOP 28480 E1400 84106 HDW11 HDW14 2950 0054 4 NUT HEX DBL CHAM 1 2 28 THD 125 IN THK 28480 2950 0054 HDW15 HDW18 3050 0604 4 WASHER FL 7 16 IN 5 IN ID 75 IN OD 86928 5710 94 16 PNL1 E1429 00201 1 FRONT COVER E1429A 28480 E1429 00201 PNL1 E1429 00211 1 FRONT COVER E1429B 28480 E1429 00211 SCR1 SCR8 0515 1135 9 SCREW M3 X 0 5 25MM LG FLAT HD 28480 0515 1135 SCR9 0515 0430 1 SCREW M3 X 0 5 6MM LG PAN HD 28480 0515 0430 SCR10 0515 1135 SCREW M3 X 0 5 25MM LG FLAT HD 28480 0515 1135 SCR11 SCR12 0515 1968 2 SCREW M2 5 X 0 45 11MM LG PAN HD 28480 0515 1968 SCR13 SCR14 0515 0368 2 SCREW M2 5 X 0 45 12MM LG PAN HD 28480 0515 0368 SCR15 SCR16 0515 1375 2 SCREW M2 5 X 0 45 6MM LG FLAT HD 83486 343 300 02506 SHD1 E1429 00601 1 TOP SHIELD E1429A 28480 E1429 00601 SHD1 E1429 00604 1 TOP SHIELD E1429B 28480 E1429 00604 SHD2 E1429 00602 1 BOTTOM SHIELD 28480 E1429 00602 SHD3 E1429 00603 1 SHIELD 28480 E1429 00603 SHD4 E1429 00605 1 SHIELD RFI BNC E1429B 28480 E1429 00605 A1 PCA REPLACEABLE PARTS FIG 5 2 A1J101 1252 4857 1 CONN POST TYPE 120 CONTACT 06776 P50L 120S RR1 TG3022 A1J201 J202 1250 2012 4 CONN RF BNC RCPT 50 OHM 00779 27676 1 A1J601 J602 1250 2012 CONN RF BNC RCPT 50 OHM 00779 2227676 1 A1P101 P201 P301 1252 5406 3 CONN POST TYPE 20 CONTACT 00779 104549 2 A2 PCA REPLACEABLE PARTS FIG 5 2 A2 F401 F407 2110 0699 7 FUSE SUBMINIATURE 5A 125V NTD 75915 R251005T1 A2
35. 6 gt 10 1 to 0 06 0 0613 0 0587 1 0E 6 gt 10 1 0 2046 0 06 0 0587 0 0613 1 0E 6 gt 10 1 0 15 0 1484 0 1516 1 4E 6 gt 10 1 0 51125 0 35 0 3540 0 3460 2 2E 6 gt 10 1 to 0 15 0 1532 0 1468 1 4E 6 gt 10 1 0 5115 0 15 0 1468 0 1532 1 4E 6 gt 10 1 0 35 0 3460 0 3540 2 2E 6 gt 10 1 0 7079 0 6921 0 3063 0 2937 1 0230 l 0 2937 0 3063 0 6921 0 7079 M U 90 day accuracy of the Datron 4708 23 C 1 C TAR Test Accuracy Ratio Digitizer Accuracy Source M U shown Chapter 3 Performance Tests 43 Table 3 1 HP E1429A B Digitizers Performance Test Record Page 4 of 5 Test 3 1 DC Voltage Measurement Accuracy Port 3 Measurements All values in Vdc Range Input Minimum Measured Maximum M U TAR 0 10225 0 07 0 0724 0 0676 1 1E 6 gt 10 1 to 0 03 0 0322 0 0278 9 2E 7 gt 10 1 0 10230 0 03 0 0278 0 0322 9 2E 7 gt 10 1 0 07 0 0676 0 0724 1 1E 6 gt 10 1 0 2045 0 15 0 1548 0 1452 1 4E 6 gt 10 1 to 0 06 0 0644 0 0556 1 0E 6 gt 10 1 0 2046 0 06 0 0556 0 0644 1 0E 6 gt 10 1 0 15 0 1452 0 1548 1 4E 6 gt 10 1 0 51125 0 35 0 362 0 338 2 2E 6 gt 10 1 to 0 15 0 161 0 139 1 4E 6 gt 10 1 0 5115 0 15 0 139 0 161 1 4E 6 gt 10 1 0 35 0 338 0 362 2 2E 6 gt 10 1 0 724 0 676 0 322 0 278 1 0230 0 278 0 322 0 676 0 724 2 045 1 448 1 352 to 0 644 0 556 2 046 0 556 0 644 1 352 1 352 3 62 3 38 1 61 1 39 1 39 1 6
36. Adjustments Rerun the self test If the test still fails replace the instrument Test F 2 DC CMRR Electronic Adjustments Rerun the DC CMRR test If the test still fails replace the instrument Test F 3 AC CMRR Electronic Adjustments Rerun the AC CMRR test If the test still fails replace the instrument Test 3 1 DC Accuracy Electronic Adjustments followed by Mechanical Adjustments After doing the Electronic Adjustments rerun the DC Accuracy Test If the test then fails do the Mechanical Adjustments and rerun the test If the test still fails replace the instrument Adjustments Environment See Table 1 1 in Chapter 1 General Information for test equipment required for the procedures described in this chapter Before performing adjustments allow the HP E1429A B digitizer to warm up for at least one hour The temperature should be within 5 C of the temperature of the most recent adjustments and between 18 C and 28 C Chapter 4 Adjustments 47 Making Electronic Adjustments NOTE Description Equipment Setup WARNING This section shows how to make electronic adjustments for the HP E1429A B digitizers including adjustments for e A D converter delay constant e Zero offset e Channel gain Perform electronic adjustments if the self test DC CMRR AC CMRR or DC Accuracy test in Chapter 3 Verification Tests fails Electronic adjustments must be done in
37. C CMRR Test This test checks the AC common mode rejection ratio AC CMRR for the differential inputs of the digitizer An input of 20 0 Vac PP E 1 MHz is applied simultaneously to the HI and LO inputs of differential port 3 or port 4 with the digitizer set to the 0 1V range The differential input value difference between the HI and LO port readings is then measured by the digitizer NOTE Do not run the AC CMMR test before doing the DC CMRR test Test F 2 If the DC CMRR test fails do NOT run the AC CMRR test If the DC CMRR test passes but the AC CMRR test fails perform the electronic adjustments A D converter delay constant zero offset and gain shown in Chapter 4 Adjustments and rerun the test If the test still fails replace the digitizer To calculate the AC CMRR we will compare the rms value of the input 20 Vac PP 10 Vac Pk 7 0714356 Vrms with the measured rms voltage The rms value is the standard deviation of the measured voltage as calculated from the following formula with n 1000 readings and vi measured voltages n n 1 ny amp 2 02 i l i l n n 1 std_dev Chapter 3 Verification Tests 29 From this the AC CMRR is calculated from the following formula The result should be an AC CMRR gt 60 dB Vrms input 7 0714356 acom S20 10819 Vms detected log19 std_dev Equipment Setup e Set up the equipment as shown in Figure 3 2 e Set DC source output to 20 0 Vac PP E 999990 H
38. Chapter 4 Adjustments 59 WARNING The DC Standard Datron 4708 Option 20 can produce dangerous voltages that are present on the terminals Do not touch the front or rear panel terminals unless you are sure no dangerous voltage is present Figure 4 5 Flatness Adjustments Setup Test Procedure 1 Make Port 3 HI measurements MEAS1 ARR VOLT 1000 10 0 DEF 3 Set digitizer for ch 1 meas 1000 readings 10 0V range input on port 3 HI ENTER statement A Store 1000 readings in A 2 Compute CMRR Rms1 ABS MAX A SQRT 2 RMS value at 1 kHz Rms2 ABS MAX A SQRT 2 RMS value at 100 kHz Db 20 LGT Rms2 Rms1 Calculate relative gain 3 Repeat test for Port 3 LO Make connections to port 3 LO Repeat steps 1 through 3 for channel 2 port 4 HI and LO 60 Adjustments Chapter 4 Example Program This program allows you to adjust each channel for maximum flatness The display is similar to the following Adjust the appropriate front panel Svc Only capacitor until the difference between the measured values at 1 kHz and 100 kHz relative gain is minimized ideally O dB Relative Gain 1 3 dB RE STORE FLATNESS 20 30 40 50 CLEAR SCREEN 60 Addr 70905 Factory set address 70 DIMA 1 1000 Dimension array to store 1000 readings 80 INPUT Enter digitizer logical address default 70905 Addr User enters digitizer address 90 ASSIGN Dig TO Addr Assign Dig to digitizer address 100 FOR Chan 1 TO 2
39. Contents HP E1429A B 2 Channel Digitizer Service Manual Edition 1 Click here to Return to HP TS 5400 Systems On Line Manuals Main Contents Chapter 1 General Information o o 7 o 6 44 AE 2 2 GRE ORME ERED EEO RE DA Oe eRe EES 7 Safety OM e e Ag kA ORES EES AES DEES EEaSRE GEESE ERE RES 8 WHIMS oe RS ERE REESE R EERE REE OS EERE OG OS REE TO 8 COG chean oe eee bh eee eee es oP he eS eee Sees 9 POMELO a sea n BC a he EE DERE RRS ERO ER EE GM 9 Dente noo wk od eke ASK A SSE A A 9 SPECIAL se oa he ae ER ORR AR EERE EEE ES CER Re aD 10 SEAL NUGOSIS sa AR Che Oe eR EOS e ee BE ERS SHS 10 COPIE ea a Rb OR REA DEO OD REED SARE Dee EES eA 10 Operating Storage Environments gt 245 dk ek GAL RE EREE EASE EERE SEES 11 Aces POR DER 63 5 os SES Se OR ee EERE REESE SSE ES Ti Recommended Test Bquipmient 0 90 28 Rao oe Ree Ae ee A 12 Inspections SIPPING se ac BR ODES DEG OS rra 12 Il IEC se AA eek he AR TA ai Re Ek Is Sh ppd CMDS o ERS UR EES 14 Chapter 2 Setting Calibration Values 2 eee eee eee er eee eens 15 ice ee AAA 15 Berme VOU Recalde 2425 4 L i ok oe SSE SESS OE SERRE SE OS 15 Calibration Information Table sia ie ABC 6466 oS do aes RC de A 15 Calibration Security ig AIE AA IE AR IR CCR IR daa A 17 Setting Calibration Security Code 244006545 eb eo a be Gee a A 17 Delcatine Calibration Sectrity iria dar dada 18 Calibration COMES s sc mson 2 Oe ERE ER ERE RED ER ORES
40. E1429A B Digitizers Operation Verification Test Values Ports Range Vdc Input Vdc 1 and 2 0 10225V to 0 10230V 0 07 0 2045V to 0 2046V 0 15 0 51125V to 0 5115V 0 35 1 0225V to 1 0230V 0 70 3 and 4 0 10225V to 0 10230V 0 07 0 2045V to 0 2046V 0 15 0 51125V to 0 5115V 0 35 1 0225V to 1 0230V 0 70 2 045V to 2 046V 1 40 5 1125V to 5 115V 3 50 10 225V to 10 230V 7 00 20 45V to 20 46V 14 0 51 125V to 51 15V 35 0 102 25V to 102 30V 70 0 Pe rfo rmance Performance verification tests are used to test the HP E1429A B digitizer s Ve rifi cat ion electrical performance using the specifications in Appendix A T Specifications of the HP E1429A B User s Manual as the performance est standards These tests are suitable for incoming inspection and troubleshooting The results of the performance verification tests should be recorded in Table 3 1 HP E1429A B Digitizers Performance Test Record at the end of this chapter HP E1429A B performance verification includes the following test HP E1429A B Digitizers Performance Verification Test Test Test Name Measures 3 1 DC Voltage DC voltage accuracy for Accuracy single ended ports 1 and 2 and for differential ports 3 and 4 Chapter 3 Verification Tests 33 Test 3 1 DC Voltage Accuracy Description NOTE Equipment Setup WARNING The purpose of this test is to verify that the HP E1429A B digitizer meets its specifications for DC Voltage Accu
41. F Error 311 Calibration security on is generated You must know the current security code to disable calibration security The factory set calibration security code is E1429 Before using your digitizer you should change the code to prevent unauthorized calibration Record the new security code and store in a secure place If you forget the new code defeating security requires instrument disassembly Related Commands CALibration SECure STATe Example Changing the calibration security code CAL SEC STAT OFF E1429 Disable security for both channels CAL SEC CODE NEW_CODE Set new security code for both channels CAL SEC ON Reenable security on both channels Appendix A CALibration Commands 85 CALibration SECure STATe Description Parameters Comments Related Commands Example CALibration lt chan gt SECure STATe lt mode gt lt code gt enables or disables calibration security Disable calibration security to calibrate the digitizer change the security code or to change protected user data Executable When Initiated yes Query Command yes Coupled Command no RST Condition unaffected Parameter Parameter Range of Default Name Type Values Units chan numeric 1or2 none mode boolean OFF O ON 1 none code character data 1 to 12 characters none This command enables disables calibration security for both channels simultaneously The code parameter must
42. GET not allowed An HP IB Group Execute Trigger was included in a command string sent to the digitizer 108 Parameter not allowed More parameters were received than expected for the command header 109 Missing parameter Command requires a parameter or parameters 112 Program mnemonic too long Command keyword gt 12 characters 113 Undefined header Command header keyword was incorrectly specified 121 Invalid character in number A character other than a comma or number is in the middle of a number 123 Exponent too large Then magnitude of the exponent is larger than 32000 124 Too many digits More than 255 digits were used to specify a number 128 Numeric data not allowed A number was specified when one is not allowed 131 Invalid suffix Parameter suffix was incorrectly specified e g 10 MZ rather than 10 MHz Appendix C Error Messages 97 Table C 1 HP E1429A B Error Messages cont d 138 Suffix not allowed Parameter suffix is specified when one is not allowed 141 Invalid character data Discrete parameter specified is not a valid choice 144 Character data too long A character data type parameter is gt 12 characters 148 Character data not allowed Discrete parameter was specified when another type e g numeric boolean is required 151 Invalid string data The string data specified such as for the OUTPut ECLTrg FEED sources command is not a valid choic
43. HEN GOTO Compl 500 IF Input 1 THEN 510 PRINT Flatness Adjustments for Port Chan 2 HI 520 PRINT 530 PRINT Relative Gain dB DROUND Db 3 dB 540 PRINT 550 PRINT 1 Adjust port Chan 2 HI Svc Only capacitor 560 ELSE 570 PRINT Flatness Adjustments for Port Chan 2 LO 580 PRINT 590 PRINT Relative Gain dB DROUND Db 3 dB 600 PRINT 610 PRINT 1 Adjust port Chan 2 LO Svc Only capacitor 620 END IF 630 PRINT 2 Press Continue to check new value 640 ON KBD GOTO Compl User presses keyboard key to go to next channel or to end program 650 PAUSE 660 GOTO Retry 670 Compl 680 IF Input 1 THEN PRINT Relative Gain for Port Chan 2 HI 0 dB 690 IF Input 2 THEN PRINT Relative Gain for Port Chan 2 LO 0 dB 700 IF Chan 2 AND Input 2 THEN 710 GOTO End of test 720 ELSE 730 PRINT Press Continue for next adjustment 740 END IF 750 PAUSE 760 NEXT Input 770 NEXT Chan 780 End of test 790 PRINT Flatness Adjustments Completed 800 END 62 Adjustments Chapter 4 Chapter 5 Replaceable Parts Introduction This chapter contains information to order replaceable parts and or exchange modules for the HP E1429A B digitizers To order a part or exchange assembly listed in this chapter specify the Hewlett Packard part number and the quantity required Send the order to your nearest Hewlett Packard Sales and Support Office Exchange Modules Table 5 1 lists modules t
44. IMPedance respectively 3 To automatically store the new constants in nonvolatile calibration RAM when CAL ZERO completes set CALibration STORe AUTO ON and turn calibration security OFF 4 To store new constants only after a complete calibration set CALibration STORe AUTO OFF and use CALibration STORe to store the constants e MINimum and MA Ximum are not allowed with this command Optional parameters left blank are filled from left to right Therefore you may need to use the DEFault syntax to show that a parameter has been defaulted For example to default the number of readings and specify a sample rate the command would appear as CAL ZERO DEF 05 ONE CALibration ZERO forces the internal reference 20 MHz oscillator to be used Sample rates are attained using that reference The default number of readings is 1000 and the default period is 1 0E 4 seconds so that the product of the two is a period is an integral multiple of both 50 Hz and 60 Hz line cycles 0 1 second e The product of the period and number of readings is checked If it exceeds 10 seconds Error 221 Settings conflict Calibration time too long occurs The default lt mode gt is ONE which calibrates using the current settings of SENSe VOLTage RANGe and SENSe FUNCtion Specifying lt mode gt ALL performs a zero calibration on all voltage range settings for both ports on the specified channel Related Commands CALibration GAIN CALibrati
45. INT 100 Vdc To avoid possible shock hazard do NOT 590 PRINT input more than 50 Vdc for this adjustment 600 END IF 610 DISP Press Continue when voltage is input 620 PAUSE 630 OUTPUT Dig CONF amp VAL Chan amp ARR VOLT 1000 CONFigure digitizer to known state amp VAL Input l amp DEF amp VAL Port amp 640 OUTPUT Dig CAL amp VAL Chan amp VAL Input Specify input voltage 650 OUTPUT Dig CAL amp VAL Chan amp GAIN DEF DEF Perform channel gain on specified port 660 DIM Err_msg 256 670 OUTPUT 70905 SYST ERR Check for gain adjustment errors 680 ENTER 70905 Code Err_msg 690 IF Code lt gt 0 THEN GOTO Err_chk Call error routine on error 700 NEXT I Next adjustment 710 NEXT Port Next port 720 730 740 750 Dimension header parameters 760 Turn FORMAT OFF for array data 770 continued on next page Chapter 4 Adjustments 51 780 FOR J 1 TO 2 79 OUTPUT Dig CAL amp VAL J amp DATA Query channel calibration constants 800 ENTER Digu USING X K K Ndig Count 1 VAL Ndig Strip off header 810 IF J 1 THEN 820 ALLOCATE INTEGER Cal1_data 1 VAL Count 2 Allocate array for channel 1 data 830 ENTER Digu Cal1_data Enter channel 1 data 840 ENTER Dig USING B Line_feed Strip off leftover line feed 850 ELSE 860 ALLOCATE INTEGER Cal2_data 1 VAL Count 2 Allocate array for channel 2 data 870 ENTER Digu Cal2_data Enter channel 2 data 880 ENTE
46. J2 J3 1251 5150 2 CONN POST TYPE 12 CONTACT 18873 67996 612 A2J101 J103 1252 4568 5 CONN POST TYPE 3 CONTACT 18873 89602 603 A2J201 J202 1252 4568 CONN POST TYPE 3 CONTACT 18873 89602 603 A2P1 P2 1252 1596 2 CONN POST TYPE 96 CONTACT 06776 DIN 96CPC SRI TR A2P110 P111 1252 4481 2 CONN POST TYPE 80 CONTACT 00779 104549 9 A2P112 1252 4859 1 CONN POST TYPE 120 CONTACT 06776 P50L 120P RR1 TG3076 A2SP601 SP602 3101 2243 2 SWITCH DIP ROCKER 8 1A 0 05A 30VDC 81073 YY22318ST A3 PCA REPLACEABLE PARTS FIG 5 2 A3J101 J201 J301 1252 5404 3 CONN POST TYPE 20 CONTACT 00779 104550 2 A3 J302 J305 1250 1846 4 CONN RF BNC RCPT 50 OHM 24931 28JR342 1 A3 J402 J405 1250 1846 CONN RF BNC RCPT 50 OHM 24931 28JR342 1 A4 PCA REPLACEABLE PARTS FIG 5 2 A4J110 J111 1252 4572 2 CONN POST TYPE 80 CONTACT 00779 104550 8 64 Replaceable Parts Chapter 5 Table 5 3 HP E1429A B Digitizers Reference Designators Reference Designators Moi assembly Pon electrical conn plug uretra ici fuse PNL ooocccniccnnnnincnccnnenirnenons panel Darren handle SCR uiieeeneeneeneereenensanaa screw ies electrical connector jack SHD ieeereeneeneeneneeneas shield MP siii misc mech part SP switch push button Table 5 4 HP E1429A B Digitizers Code List of Manufacturers Mfr Manufacturer Name Manufacturer Address Zip Code Code 00779 AMP INC HARRISBURG PA US 17111
47. N Turn calibration security ON OUTPUT Dig PUD Read protected user data ENTER Dig Pro_data Enter data includes header CLEAR SCREEN PRINT HP E1429A B Digitizers Protected User Data PRINT PRINT Pro_data POS Pro_data CHR 32 LEN Pro_data END A typical return follows HP E1429A B Digitizers Protected User Data Last Calibration 17 Feb 1994 22 Setting Calibration Values Chapter 2 Chapter 3 Verification Tests Introduction WARNING Test Conditions Procedures PerformanceTest Record Verification Test Examples The three levels of test procedures described in this chapter are used to verify that the HP E1429A B digitizers e are functional Functional Verification e meet selected testable specifications Operation Verification e meet all testable specifications Performance Verification Do not perform any of the following verification tests unless you are a qualified service trained technician and have read the WARNINGS and CAUTIONS in Chapter 1 See Table 1 1 for test equipment requirements You should complete the performance verification tests at least once a year For heavy use or severe operating environments perform the tests more often The temperature should be between 18 C and 28 C The verification tests assume that the person performing the tests understands how to operate the mainframe the amplifier and specified test equipment The test procedures do not s
48. ND Typical Result A typical result for Channel 1 follows AC CMMR Adjustments for Channel 1 1 Adjust C306 for maximum CMRR value 2 Press Return key for Channel 2 adjustments AC Common Mode Rejection Ratio 84 3 dB mu 75 dB 80dB 85dB 90 dB 58 Adjustments Chapter 4 Flatness Adjustments NOTE Description Equipment Setup This adjustment measures the voltage at 1 kHz reference value and the voltage at 100 kHz and allows the user to adjust the digitizer so that the two values are as nearly as possible equal flat frequency response Do NOT perform flatness adjustments unless the electronic adjustments A D converter delay constant zero offset and gain for channels 1 and 2 have been performed the digitizer has passed the DC CMRR test and the AC CMRR adjustments have been performed As shown in Figure 4 4 for flatness adjustments a 16 0 Vac PP signal 990 Hz is input to Port 3 HI and is measured to form a reference value The input is then changed to 99990 Hz and the value is again measured The user adjusts the front panel Port 3 HI Svc Only adjustment until the value at 100 kHz matches the 1 kHz reference value This procedure is repeated for Port 3 LO Port 4 HI and Port 4 LO Y AKA Y O o ae h NAVA J Front Fane no ANN ve ni ve UO ly Figure 4 4 Flatness Adjustments e Set up the equipment as shown in Figure 4 5 e Set DC source output to 16 0 Vac 990 Hz
49. OOO0O000 OOO0O000 Please write any comments and or suggestions in the space provided below Use additional pages if you wish The more specific your comments the more useful they are to us Your Name Company Address Job Title City State Telephone Zip Postal Code Country Chapter 1 General Information l n t rod u ct ion This service manual contains information to test troubleshoot and repair the HP E1429A B 2 Channel 20 MSa s Digitizers digitizers The HP E1429A B digitizers are identical except that the HP E1429B adds a Local Bus capability not available in the HP E1429A Figure 1 1 shows a typical HP E1429A B digitizer NOTE See Inspection Shipping if you need to perform incoming initial inspection of your digitizer Before you use the digitizer see Chapter 2 Setting Calibration Values for guidelines to record initial calibration data values Failed Annunciator ne Error Annunciator Sample Annunciotor oao Chan 1 5000 0750 O hannel 1 P 1 Sinc nded Inpt Channel 1 Port 3 Differential Inputs lt 7 AAN Channel 2 Port 2 Single Ended Input Channel 2 Port 4 Differential Inputs lt a Ext 1 Input Ext 2 Input Figure 1 1 HP E1429A B Digitizers Chapter 1 General Information 7 Safety Information Warnings WARNING The HP E1429A B digitizers are Safety Class I instruments that are provided with a protectiv
50. OUTPUT Dig FORM PACK CAL1 SEC STAT OFF E1429 Assign I O path to 70905 Turn FORMAT OFF for array data Set PACKed format Turn calibration security OFF assuming factory code of E1429 OUTPUT Dig USING K CAL1 DATA 3124 Specify 124 bytes OUTPUT Digu Array CHR 10 END OUTPUT Dig CAL STOR coming 62 constants Send array of calibration constants Store calibration constants in nonvolatile RAM Appendix A CALibration Commands 87 CALibration STORe AUTO Description CALibration lt chan gt STORe AUTO lt mode gt selects whether calibration constants will be stored when commands such as CALibration GAIN and CALibration ZERO complete Executable When Initiated yes Query Command yes Coupled Command no RST Condition mode ON Parameters Parameter Parameter Range of Default Name Type Values Units chan numeric 1or2 none mode boolean ON 1 OFF O none Comments e Enabling CAL STOR AUTO for either channel enables storage for both channels Related Commands CALibration GAIN CALibration SECure STATe CALibration STORe CALibration ZERO Example Turn automatic storage of calibration constants OFF CAL STOR AUTO OFF Disable automatic storage of calibration constants 88 CALibration Commands Appendix A CALibration VALue Description CALibration lt chan gt VALue lt number gt specifies the voltage level to be supplied at
51. R Dig USING B Line feed Strip off leftover line feed 890 ENDIF 900 910 920 930 940 OUTPUT Dig CAL1 STOR 950 OUTPUT Dig CAL2 STOR 960 OUTPUT Dig CAL COUN 970 ENTER ODig Cal_count 980 990 1000 1010 CLEAR SCREEN 1020 PRINT HP E1429A B Digitizer Calibration Constants 1030 PRINT 1040 PRINT Date DATE TIMEDATE 1050 PRINT Time TIME TIMEDATE 1060 PRINT Starting calibration count Cal_ct_orig 1070 PRINT Ending calibration count Cal_count 1080 PRINT 1090 PRINT Channel 1 Calibration Constants 1100 PRINT 1110 PRINT Cal1_data 1120 PRINT 1130 PRINT Channel 2 Calibration Constants 1140 PRINT 1150 PRINT Cal2_data 1160 GOTO No _err 1170 continued on next page 52 Adjustments Chapter 4 1200 Err_chk 1210 CLEAR SCREEN 1220 PRINT 1230 PRINT Gain Adjustment Error 1240 PRINT 1250 PRINT Port Port 1260 PRINT Range Range l Vdc 1270 PRINT Input Value l Vdc 1280 BEEP 1290 PRINT 1300 PRINT Code Err_msg Display error message 1310 PRINT 1320 PRINT 1 Check input value port connections 1330 PRINT 2 Correct as necessary and rerun this adjustment 1340 DISP Press Continue to rerun this adjustment 1350 PAUSE 1360 GOTO Retry 1370 No_err 1380 OUTPUT Dig CAL SEC STAT ON Turn cal security ON both channels 1390 END Typical Result A typical result follows In the following display for channel 1 index 0 in Table
52. RINT Time TIME TIMEDATE PRINT Calibration Count Cal_count PRINT PRINT Channel 1 Calibration Constants PRINT PRINT Cal1_data PRINT PRINT Channel 2 Calibration Constants PRINT PRINT Cal2_data END A typical result follows where channel 1 index 0 in Table 2 1 147 index 1 939 index 61 307 and channel 2 index 0 248 index 1 939 index 61 310 HP E1429A B Digitizer Calibration Count Constants Date 24 Sep 1993 Time 10 15 23 Calibration Count 3 Channel 1 Calibration Constants 147 939 533 336 819 450 21 59 30 58 21 88 15 57 21 99 42 43 387 310 117 2047 2048 328 397 300 306 407 290 290 413 284 343 385 312 310 387 310 293 391 306 277 390 307 279 393 304 279 397 300 281 391 306 280 392 305 281 395 302 281 390 307 Channel 2 Calibration Constants 248 939 533 336 819 450 21 59 30 58 21 88 15 57 21 99 42 43 387 310 117 2047 2048 328 397 300 306 407 290 290 413 284 343 385 312 310 387 310 293 391 306 277 390 307 279 393 304 279 397 300 281 391 306 280 392 305 281 395 302 281 390 310 20 Setting Calibration Values Chapter 2 Setti ng New If you need to set new calibration constants or reset existing calibration Calibration constants you can use the following program The new calibration constants take effect immediately but are not saved to nonvolatile Constants calibration memory unless the CAL STOR com
53. adings on the 5V range CAL SEC STAT OFF E1429 Disable calibration security assuming security code E1429 CAL STOR AUTO OFF Disable automatic storage of calibration constants CAL1 VAL 4 8 Set value to gt 85 of positive full scale on 5 V range CAL1 GAIN DEF DEF Calibrate channel I for gain using default sample rate and number of points Linearity is not done since this is not the 1V range CAL1 STOR Store new gain settings into calibration RAM 84 CALibration Commands Appendix A CALibration SECure CODE Description CALibration lt chan gt SECure CODE lt code gt sets the code required to disable calibration security Calibration security must be previously disabled to use this command Executable When Initiated yes Query Command no Coupled Command no RST Condition unaffected Parameters Parameter Parameter Range of Default Name Type Values Units chan numeric 1 or 2 none code character data 1 to 12 characters none Comments e Valid calibration security codes must begin with a letter and can contain letters digits and underscores Lower case letters are automatically converted to upper case The calibration code is shared by both channels The digitizer stores the security code in its nonvolatile calibration RAM and the code remains in RAM even with power off If calibration security has not been previously disabled with CALibration SECure STATe OF
54. applied to port Repeat Step 5 for all ranges and ports in the order shown in the following table Ports Range Input Ports Range Input Vdc Vdc Vdc Vdc 1 2 1 0230 1 0 3 4 1 0230 1 0 0 1023 0 1 0 1023 0 1 0 2046 0 2 0 2046 0 2 0 5115 0 5 0 5115 0 5 2 046 2 0 5 1125 5 0 10 23 10 0 20 46 20 0 51 15 50 0 102 30 50 0 Do NOT exceed 50 Vdc for the 102 Vdc range 6 Store cal constants read ending cal number CAL1 STOR Store chan 1 cal const CAL2 STOR Store chan 2 cal const CAL COUN Query calibration number 7 Turn calibration security ON CAL SEC STAT ON Turn calibration security ON for both channels Chapter 4 Adjustments 49 Example Prog ram An example program follows to perform an A D converter delay constant adjustment zero offset adjustment and channel gain adjustments for channels 1 and 2 This program performs all adjustments using default settings If you do not want to use the default settings see Appendix A CALibration Commands for guidelines to set changes RE STORE ADJUST CLEAR SCREEN Addr 70905 INPUT Enter digitizer logical address default 70905 Addr ASSIGN Dig TO Addr OUTPUT Dig RST CLS OUTPUT Dig CAL COUN ENTER Dig Cal_ct_orig OUTPUT Dig CAL SEC STAT OFF E1429 OUTPUT Dig CAL STOR AUTO OFF OUTPUT Dig CAL DEL OUTPUT Dig CAL1 ZERO DEF DEF ALL OUTPUT Dig CAL2 ZERO DEF DEF ALL Gain adjustments for all ranges on ports
55. be present to disable the security or Error 109 Missing parameter is generated The code value must match the currently programmed code or Error 224 Illegal parameter value is generated A 1 second delay occurs before the digitizer executes any subsequent commands To enable calibration security the code parameter is not required but is checked if it is present If an incorrect code is supplied Error 224 Illegal parameter value is generated Security must be disabled to calibrate the digitizer or to use the PUD command CALibration GAIN CALibration SECure CODE CALibration STORe CALibration ZERO PUD Disabling calibration security CAL SEC STAT OFF E1429 Disable security assuming factory set security code 86 CALibration Commands Appendix A CALibration STORe Description CALibration lt chan gt STORe stores current calibration constants into nonvolatile calibration RAM Executable When Initiated no Query Command no Coupled Command no RST Condition none Parameters Parameter Parameter Range of Default Name Type Values Units chan numeric 1or2 none Comments e CALibration SECure STATe must be OFF before executing this command Related Commands CALibration COUNt CALibration DATA CALibration SECure STATe CALibration STORe AUTO Example Sending and storing new calibration constants ASSIGN Dig TO 70905 ASSIGN Digu TO 70905 FORMAT OFF
56. both channels 180 END Chapter 2 Setting Calibration Values 17 Defeating If you do not know the current calibration security code you can defeat the Calibration Secu rity calibration security feature by disassembling the digitizer and moving the jumper on connector J201 see Figure 2 1 to the unsecured position left most pins See Chapter 6 Service for disassembly instructions To prevent accidental or unauthorized calibration move the jumper back to the secured position right most pins as soon as the security code has been set to the desired value To do this you will need to move the jumper to the unsecured position reassemble the instrument enter the new lt code gt value disassemble the instrument again set the jumper back to the secured position and reassemble the instrument JATRON 4708 Figure 2 1 Defeating Calibration Security 18 Setting Calibration Values Chapter 2 Cal I b ratio n This section shows how to read existing calibration constants and Con sta nt S calibration count and how to enter new calibration constants as required Reading Calibration Before using the digitizer we suggest you record the initial calibration Constants count and calibration constants on Table 2 1 and store the results in a secure place Note that the calibration count applies to both channels 1 and 2 so a single count is returned
57. bration constants WARNING To avoid possible hazardous electrical shock do not perform electrical tests if there are signs of shipping damage to the shipping container or to the instrument 12 General Information Chapter 1 Check Carton otify HP Keep carton for See Series C Installation and Getting Started Guide Chapter 2 Setting Calibration Values Figure 1 3 Initial Incoming Inspection Guidelines Chapter 1 General Information 13 Shipping Guidelines Follow the steps in Figure 1 4 to return an HP E1429A B digitizer to a Hewlett Packard Sales and Support Office or to a Service Center Figure 1 4 Recommended Shipping Guidelines 14 General Information Chapter 1 Chapter 2 Setting Calibration Values Introduction Before You Recalibrate Calibration Information Table This chapter shows how to read existing calibration values for your digitizer and how to change these values as required It includes e setting defeating calibration security e reading setting calibration constants e reading setting protected user data Before you recalibrate your digitizer you may want to set a new calibration security code and record the initial calibration count and calibration constants See Setting Calibration Security Code to set a new calibration security code See Reading Calibration Constants to read the initial calibration count and constants Table 2 1 HP E1429A B Digitiz
58. d to use the DEFault syntax to note that a parameter has been defaulted For example to default the number of readings and specify a sample rate the command would appear as CAL GAIN DEF 05 one CALibration GAIN forces the internal reference 20 MHz oscillator to be used Sample rates are attained using that reference The default number of readings is 1000 and the default period is 1 0E 4 seconds These values were selected so that the product of the two is a period that is an integral multiple of both 50 Hz and 60 Hz line cycles 1 second The product of the period and number of readings is checked to see if it exceeds 10 seconds If so Error 221 Settings conflict Calibration time too long occurs When calibrating gain on differential ports the error All readings have same value in cal_mean routine could occur The most likely cause of this error is that the two differential inputs on the port are not grounded properly and a common mode overload is occurring Appendix A CALibration Commands 83 e Normally new gain values are automatically stored in nonvolatile calibration RAM However if CALibration STORe AUTO OFF is set the new gain values are stored to calibration RAM only when CALibration STORe is executed Related Commands CALibration SECure STATe CALibration STORe CALibration STORe AUTO CALibration VALue Example Performing gain calibration CONF ARR VOLT 100 4 8 DEF 1 Configure for 100 re
59. data IEEE 488 2 2048 to 2047 none block data Comments e Sending calibration constants with this command causes the digitizer to calibrate to the new constants Error 222 Data out of range results 1f the constants are not within valid ranges e The new calibration constants take effect immediately but are not saved to nonvolatile calibration RAM until CALibration STORe is executed As desired you can prepare calibration constants tables to be downloaded whenever the characteristics of the device connected to the digitizer change Storage and retrieval from memory of these tables is then under control of the host controller external to the digitizer e CAL DATA returns the current calibration constants for the digitizer These may not be the same values stored in nonvolatile calibration RAM unless CALibration STORe has previously been executed on these constants e Each channel contains 62 calibration constants as shown in the following table Note that the array index starts with 0 Appendix A CALibration Commands 79 HP E1429A B Digitizers Calibration Constants Definitions Index Contents Index Contents 0 offset for 1 0235V range 31 gain Isb for single ended 5115 V range 1 A to D chip internal setting 32 offset for differential 10230 V range 2 A to D chip internal setting 33 gain msb for differential 10230 V range 3 A to D chip internal setting 34 gain Isb for differential 10230 V range 4 A to D chip internal
60. digitizer from the mainframe or when handling a digitizer Also be sure to tighten the front panel screws when installing an HP E1429A B in a mainframe slot This section summarizes information for the HP E1429A B digitizers in the following areas digitizer description digitizer specifications digitizer serial number information digitizer options digitizer environmental limits service programs disk The HP E1429A B digitizers are VXIbus C Size message based servant and register based A24 slaves with A16 A24 D8 D16 and D32 read capability The digitizers can operate in a C Size VXIbus mainframe using an HP E1406A Command Module and Standard Commands for Programmable Instruments SCPI The digitizers also support register based programming Chapter 1 General Information 9 Specifications Serial Numbers The digitizers can sample input transient waveforms at sample rates of 0 05 to 20 MSa s in 1 2 5 sequence Each of the two channels includes a differential and single ended input The single ended inputs can be programmed for 50 Q or 75 Q Battery backed memory allows 512 K readings per channel Arm and trigger signals can be generated internally or received from a variety of sources on the VXI backplane or the faceplate BNCs Self tests power on and TST are available to verify digitizer operation See Appendix A Specifications in the HP El429A B User s Manual for HP E1429A B digitizer specifications These
61. e 158 String data not allowed A string was specified when another parameter type i e discrete numeric boolean is required 161 Invalid block data The number of bytes in a definite length data block does not equal the number of bytes indicated by the block header 168 Block data not allowed Block data was specified when another parameter type i e discreter numberic boolean is required 171 Invalid expression The expression used to calculate a parameter value is invalid 178 Expression data not allowed An expression cannot be used to calculate a parameter value 181 Invalid outside macro def A macro parameter placeholder lt number was encountered outside of a macro definition 183 Invalid inside macro def A command was encountered that is not allowed inside a macro 184 Macro parameter error A command inside the macro definition had the wrong number or wrong type of parameters 211 Trigger ignored A trigger was received and the digitizer was not in the wait for trigger state Or a trigger was received from a source other than the specifiied source 212 Arm ignored An arm was received and the digitizer was not in the wait for arm state Or an arm was received from a source other than the specified source 213 Init ignored INITiate IMMediate received while the digitizer was initiated 214 Trigger deadlock Readings cannot be retrieved using FETCh or READ because TRIGger STARt COUNt INFinite is set Also occurs wit
62. e 5115V range offset diff 10230V range gain msb diff 10230V range gain Isb diff 10230V range offset diff 2046V range gain msb diff 2046V range gain Isb diff 2046V range offset diff 51175V range gain msb diff 5115V range gain Isb diff 5115V range offset diff 1 0230V range gain msb diff 1 0230V range gain Isb diff 1 0230V range offset diff 2 046V range gain msb diff 2 046V range gain Isb diff 2 046V range offset diff 5 115V range gain msb diff 5 115V range gain Isb diff 5 115V range offset diff 10 230V range gain msb diff 10 230V range gain Isb diff 10 230V range offset diff 20 46V range gain msb diff 20 46V range gain Isb diff 20 46V range offset diff 51 15V range gain msb diff 51 15V range gain Isb diff 51 15V range offset diff 102 30V range gain msb diff 102 30V range gain Isb diff 102 30V range s e single ended input Ports 1 and 2 diff differential ports Ports 3 and 4 16 Setting Calibration Values Chapter 2 Cal I bratio n This section shows how to set a calibration security code for your digitizer Secu rity and how to defeat calibration security if required Setti ng Calibration When the HP E1429A B digitizer was shipped from the factory the Security Code calibration security code was set to E1429 Before using the digitizer and as necessary we recommend you change the calibration security code to prevent unauthorized or accidental calibration Record the
63. e Table 1 1 for test equipment recommended to test and service the HP Te st Eq u i pme nt E1429A B digitizers Essential requirements for each piece of test equipment are listed in the Requirements colamn You may substitute other equipment if it meets the requirements in Table 1 1 Table 1 1 Recommended Test Equipment Instrument Requirements Recommended Use Model Controller HP IB compatibility as defined by IEEE HP 9000 Series 300 F P HP IB Standard 488 1987 and the identical ANSI Standard MC1 1 SH1 AH1 T2 TEO L2 LEO SRO RLO PPO DCO DTO and C1 2 3 4 5 Mainframe Compatible with HP E1405B or HP E1400B HP E1400T F P HP E1406A or HP E1401A each mainframe requires HP E1405B or E1406A Command Module DC Source Voltage range 100 Vdc Datron 4708 Option 10 F P A Tools Alignment Tool HP P N 8710 0630 Supplied A Adjustment Tool HP P N 8710 2106 Supplied A Adjustments F Functional Verification Tests P Performance Verification Tests T Troubleshooting Inspection This section shows initial incoming inspection and shipping guidelines for S h i ppi n g the HP E1429A B digitizers Initial Inspection Use the steps in Figure 1 3 as guidelines to perform initial incoming inspection of the HP E1429A B digitizers After the digitizer passes its initial inspection see Chapter 2 Setting Calibration Values to set a new calibration security code and record initial cali
64. e earth terminal when installed in the mainframe Check the mainframe and all related documentation for safety markings and instructions before operating or servicing a digitizer See the WARNINGS page page 111 for a summary of safety information Safety information to test and service the HP E1429A B digitizers follows and is also found throughout this manual Follow the WARNINGS listed to avoid possible injury to yourself or others when operating repairing or servicing a digitizer SERVICE TRAINED PERSONNEL ONLY The information in this manual is for service trained personnel who are familiar with electronic circuitry and are aware of the hazards involved To avoid personal injury or damage to the instrument do not perform procedures in this manual or do any servicing unless you are qualified to do so CHECK MAINFRAME POWER SETTINGS Before applying power verify that the mainframe setting matches the line voltage and the correct fuse is installed An uninterruptible safety earth ground must be provided from the main power source to the supplied power cord set GROUNDING REQUIREMENTS Interruption of the protective grounding conductor inside or outside the mainframe or disconnecting the protective earth terminal will cause a potential shock hazard that could result in personal injury Grounding one conductor of a two conductor outlet is not sufficient protection IMPAIRED PROTECTION Whenever it is likely that instrument prot
65. ection has been impaired the mainframe must be made inoperative and be secured against any unintended operation REMOVE POWER IF POSSIBLE Some procedures in this manual may be performed with power supplied to the mainframe while protective covers are removed Energy available at many points may if contacted result in personal injury If service can be performed without power applied remove the power 8 General Information Chapter 1 WARNING Cautions CAUTION Product Information Description USING AUTOTRANSFORMERS If the mainframe is to be energized via an autotransformer for voltage reduction make sure the common terminal is connected to neutral that is the grounded side of the main s supply USE PROPER FUSES For continued protection against fire hazard replace the line fuse s only with fuses of the same current rating and type such as normal blow time delay etc Do not use repaired fuses or short circuited fuseholders Follow the CAUTIONS listed to avoid possible damage to the equipment when performing instrument operation service or repair MAXIMUM INPUT VOLTAGE CURRENT To avoid possible damage to the instrument maximum input voltage terminal to terminal and terminal to chassis is 42 V peak STATIC ELECTRICITY Static electricity is a major cause of component failure To prevent damage to the electrical components in the digitizers observe anti static techniques when removing a
66. elf test to verify that the digitizer module is operational NOTE As desired you may want to run the functional and or performance verification tests in Chapter 3 Verification Tests Chapter 6 Service 75 Notes 76 Service Chapter 6 Appendix A CALibration Commands Command This appendix describes the CALibration subsystem commands used for the S HP E1429A B digitizers Table A 1 summarizes CALibration commands umma ry for the digitizers Table A 1 HP E1429A B Digitizers CALibration Commands Command Description Page CALibration lt chan gt COUNt Returns the number of times the digitizer has been A 2 calibrated CALibration lt chan gt DATA lt block data gt Use to set or query current calibration constants A 3 CALibration lt chan gt DELay Adjusts delay constant for the A D converter A 5 CALibration lt chan gt GAIN lt readings gt Performs gain adjustment using specified number A 6 lt period gt flag of readings and sample rate CALibration lt chan gt SECure CODE Sets code to disable calibration security Factory A 9 lt code gt set to E1429 CALibration lt chan gt SECure STATe Enables or disables calibration security A 10 lt mode gt lt code gt CALibration lt chan gt STORe Stores current calibration constants into nonvolatile A 11 RAM CALibration lt chan gt STORe AUTO Selects whether
67. ents for the instruments 5 Replaceable Lists part numbers of replaceable parts for the instruments Also includes Parts information to order spare parts and to exchange replace instruments 6 Service Procedures to aid in fault isolation and repair of the instruments A CALibration Summarizes the CALibration subsystem commands for the instruments Commands B Calculating Shows how to calculate digitizer accuracy source measurement uncertainty Digitizer Accuracy and test accuracy ratio TAR for the digitizers C Error Messages Lists error messages associated with performance verification tests and adjustments What s in this Manual HP 75000 Series C Service Documentation Suggested Sequence to Use Manuals Service Manua C_SEQ Manual Descriptions Title Description Series C Installation and Step by step instructions for all aspects of plug in module mainframe and command Getting Started Guide module installation Also contains programming information and examples Mainframe User s Manual Information to prepare the mainframe and to install plug in modules Command Module User s Programming information for the command module and general programming Manual information for instruments installed in the mainframe Command Module Service Command module service information Includes information and procedures for Manual functional verification operation verification performance verification troubleshoot
68. ers Calibration Information on the following page is a form you can copy and use to record the current value of the calibration count calibration constants for each channel and your current calibration security code We recommend that you use this form to record the initial values before you use the digitizer and whenever you change values Chapter 2 Setting Calibration Values 15 Table 2 1 HP E1429A B Digitizers Calibration Information Table General Information Digitizer Serial Number Date Time Calibration Constants Values Calibration Security Code Calibration Count Index Contents Contents 0 1 2 3 4 5 6 7 8 offset for 1 0230V range A to D chip internal setting A to D chip internal setting A to D chip internal setting A to D chip internal setting A to D chip internal setting linearity bit 5 right linearity bit 5 left linearity bit 6 right linearity bit 6 left linearity bit 7 right linearity bit 7 left linearity bit 8 right linearity bit 8 leftt linearity bit 9 right linearity bit 9 left linearity bit 10 right linearity bit 10 left gain msb gain Isb conversion delay adjust trigger level negative trigger level positive offset s e 10230V range gain msb s e 10230V range gain Isb s e 10230V range offset s e 2046V range gain msb s e 2046V range gain Isb s e 2046V range offset s e 5115V range gain msb s e 5115V range gain Isb s
69. ers Performance Test Record Page 2 of 5 Model Report No Date Test Equipment Used Description Model No Trace No Cal Due Date 42 Performance Tests Chapter 3 Table 3 1 HP E1429A B Digitizers Performance Test Record Page 3 of 5 Test 3 1 DC Voltage Measurement Accuracy Port 1 Measurements All values in Vdc Range Input Minimum Measured Maximum M U TAR 0 10225 0 07 0 0708 0 0692 1 1E 6 gt 10 1 to 0 03 0 0306 0 0294 9 2E 7 gt 10 1 0 10230 0 03 0 0294 0 0306 9 2E 7 gt 10 1 0 07 0 0692 0 0708 1 1E 6 gt 10 1 0 2045 0 15 0 1516 0 1484 1 4E 6 gt 10 1 to 0 06 0 0613 0 0587 1 0E 6 gt 10 1 0 2046 0 06 0 0587 0 0613 1 0E 6 gt 10 1 0 15 0 1484 0 1516 1 4E 6 gt 10 1 0 51125 0 35 0 3540 0 3460 2 2E 6 gt 10 1 to 0 15 0 1532 0 1468 1 4E 6 gt 10 1 0 5115 0 15 0 1468 0 1532 1 4E 6 gt 10 1 0 35 0 3460 0 3540 2 2E 6 gt 10 1 1 0225 0 7 0 7079 0 6921 4 8E 6 gt 10 1 to 0 3 0 3063 0 2937 3 8E 6 gt 10 1 1 0230 0 3 0 2937 0 3063 3 8E 6 gt 10 1 0 7 0 6921 0 7079 4 8E 6 gt 10 1 Range Input Minimum Measured Maximum M U TAR 0 10225 0 07 0 0708 0 0692 1 1E 6 gt 10 1 to 0 03 0 0306 0 0294 9 2E 7 gt 10 1 0 10230 0 03 0 0294 0 0306 9 2E 7 gt 10 1 0 07 0 0692 0 0708 1 1E 6 gt 10 1 0 2045 0 15 0 1516 0 1484 1 4E
70. estProcedure 1 Make Channel 1 measurements MEAS1 ARR VOLT 1000 0 1 DEF 3 Set digitizer for ch 1 meas 1000 readings 0 1V range input on port 3 ENTER statement Values Store 1000 readings in data array A 2 Compute AC CMRR Cmrr 20 LGT 7 0714356 Std_dev Calculate AC CMRR for 20 0 Vac input see Test F 3 in Chap 3 3 Repeat the test for Channel 2 input Make connections to port 4 Hl and LO MEAS2 ARR VOLT 1000 0 1 DEF 4 Set digitizer for ch 2 meas 1000 readings 0 1V range input on port 4 56 Adjustments Chapter 4 Example Program This program allows you to adjust C306 channel 1 or C406 channel 2 for 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 maximum AC CMRR The display is similar to the following Adjust C306 or C406 until the AC CMRR value is maximized AC Common Mode Rejection Ratio 84 3 dB Ee 70dB 75dB 80dB 85dB 90dB RE STORE AC_ADJS Addr 70905 Factory set address INPUT Enter digitizer logical address default 70905 Addr Enter digitizer address ASSIGN Dig TO Addr Assign Dig to digitizer address DIM A 1 1000 Value 1 1000 Dimension arrays for values FOR Chan 1 TO 2 Loop for both channels CLEAR SCREEN PRINT AC Common Mode Rejection Ratio Adjustments Channel Chan PRINT PRINT 1 Connect AC source to Port Chan 2 HI and LO PRINT 2 Set AC source output to 20 0 Vac PP 1 MHz DISP Press Continue when ready to
71. for the digitizer The calibration constants however are unique to each channel Example Reading Calibration Count and Constants An example program follows to read the existing calibration count and calibration constants for channels 1 and 2 IRE STORE READ_CAL ASSIGN ODig TO 70905 Assign Dig to 70905 OUTPUT Dig CAL COUN Query calibration count ENTER Dig Cal_count Enter calibration count DIM Ndig 1 Count 9 Dimension parameters for header ASSIGN Digu TO 70905 FORMAT OFF Turn FORMAT OFF for array data OUTPUT Dig FORM PACK Set PACKed format OUTPUT Dig CAL1 DATA Query calibration data ENTER Digu USING X K K Ndig Count 1 VAL Ndig Strip off header preceeding data ALLOCATE INTEGER Cal1_data 1 VAL Count 2 Allocate array to hold channel 1 data ENTER Digu Cal1_data Read channel 1 calibration constants ENTER Dig USING B Line_feed Strip off leftover line feed OUTPUT Dig CAL2 DATA Query calibration data ENTER Digu USING X K K Ndig Count 1 VAL Ndig Strip off header preceeding data ALLOCATE INTEGER Cal2_data 1 VAL Count 2 Allocate array to hold channel 2 data ENTER Digu Cal2_data Read channel 2 calibration constants ENTER Dig USING B Line feed Strip off leftover line feed continued on next page Chapter 2 Setting Calibration Values 19 CLEAR SCREEN PRINT HP E1429A B Digitizer Calibration Count Constants PRINT PRINT Date DATE TIMEDATE P
72. h READ and TRIGger STARt SOURce HOLD or TRIGger STARt SOURce BUS set 215 Arm deadlock Readings cannot be retrieved using FETCh or READ because ARM STARt COUNt INFinite is set Also occurs with READ and ARM STARt SOURce BUS or ARM STARt SOURce OFF set 98 Error Messages Appendix C Table C 1 HP E1429A B Error Messages cont d 221 Settings conflict Refer to the statement appended to the Settings conflict message for a description of the conflict and how it was resolved 222 Data out of range Parameter value is out of range for any digitizer configuration 224 Illegal parameter value An exact value from a list of possible choices was expected 230 Data corrupt or stale Attempting to FETch data from the digitizer following a reset or other digitizer configuration change 231 Data questionable Reading accuracy is questionable An example is when the expected value and resolution parameters of the CONFigure or MEASure command are specified If the resolution is too fine for the expected value this error occurs 240 Hardware error The command could not be executed due to a hardware failure 270 Macro error RMC lt name gt was executed but the name is not defined 271 Macro syntax error A syntax error occurred among the commands within the macro 272 Macro execution error Macro program data sequence could not be executed due to a syntax erro
73. hat may be replaced on an exchange basis Exchange Modules Exchange modules are available only on a trade in basis Defective modules must be returned for credit Order modules for spare parts stock by the new module part number Table 5 1 HP E1429A B Digitizers Exchange New Modules Model Description Exchange Part New Part Number Number HP E1429A HP E1429B 2 Channel 20 MSa s Digitizer w Memory E1429 69201 E1429 66201 2 Channel 20 MSa s Digitizer w Memory E1429 69202 E1429 66202 and Local Bus NOTE Replaceable Parts Lists If an HP E1429A B digitizer defect can be traced to a fuse or replaceable mechanical part replace the fuse and or part and retest the module If the defect cannot be traced to a fuse or replaceable mechanical part replace the entire module Individual printed circuit assemblies PCA Al through A4 cannot be returned for replacement or exchange Table 5 2 lists replaceable parts for the HP E1429A B digitizers See Component Locators Figures 5 1 and 5 2 for locations of parts in Table 5 2 Table 5 3 shows reference designators for parts in Table 5 2 and Table 5 4 shows the manufacturer code list for the parts Chapter 5 Replaceable Parts 63 Table 5 2 HP E1429A B Digitizers Replaceable Parts Reference HP Part Qty Description Mfr Mfr Part Number Designator Number Code HP E1429A B HARDWARE PARTS FIG 5 1 HDL1 E1400 84105 1 EXT HANDLE KIT BOTTOM 28
74. heck Reference Designator Check Action Notes Heat Damage _i _ Discolored PC board If there is damage do not Damaged insulation operate the module until you Evidence of arcing have corrected the problem Fuses Jumpers A2F401 F407 Fuse continuity Replace fuses s as required Switches A2 PCA A2J2 Jumper position Factory set at IRQ Level 3 A2J201 Jumper position Factory set to SECURITY A2SP601 Logical address setting Factory set to 40 A2SP602 Servant area switch Factory set to 255 Replaceable Parts See Table 5 2 for Bent damaged connectors Repair replace as required replaceable parts Testing the Module You can use the tests and checks in Chapter 3 Verification Tests to identify a problem with the instrument See Chapter 5 Replaceable Parts for locations of mechanical parts D isassem b ly To perform digitizer disassembly you will need a e 5 8 15 875 mm nut driver e T 8 TORX driver e T 10 TORX driver See the following figures for steps to disassemble a digitizer Reverse the steps to reassemble the digitizer CAUTION Do not handle or disassemble the digitizer module unless you are familiar with the precautions listed in the Repair Maintenance Guidelines section of this chapter Chapter 6 Service 71 Remove Top Shield 429 REMVETOP Remove Front Panel 2 E1429 REMFTPNL 72 Service Chapter 6 A Dyn anny Remove A3 A4 PCAs 3 VG
75. ing and repair Plug In Module User s Plug in module programming and configuration information Contains programming Manuals examples and SCPI command reference for the module Plug In Module Service Plug in module service information Depending on the module includes information Manuals and procedures for functional verification operation verification performance verification adjustment troubleshooting and repair Suggested Sequence to Use Manuals Manual Comment Sheet HP E1429A B 2 Channel 20 MSa s Digitizers Service Manual Manual Part Number E1429 90010 Edition 1 September 1993 You can help us improve our manuals by sharing your comments and suggestions Please complete this questionnaire after becoming familiar with the manual and then return it to us In appreciation of your time we will enter your name in a quarterly drawing for a Hewlett Packard calculator Please describe the system configuration programming language and plug in modules you are using with this product Please pencil in one circle for each statement below as it applies to this documentation Disagree Agree The manual is well organized Instructions are easy to understand The manual is clearly written Examples are clear and useful Manual contains enough examples Illustrations are clear and helpful Manual meets my expectations OOO0O000 OOO0O000 OO0O0O000
76. ltages much less than full scale may be used to calibrate gain on this range Values lt 48 975 and gt 48 975 are accepted as legal values for calibrating the 102 35 volt range CALibration GAIN Example Setting calibration value CAL2 VAL 5 00 Specified value to be input to Channel 2 is 5 00 V CALibration ZERO Description CALibration lt chan gt ZERO lt readings gt lt period gt lt mode gt performs a zero offset calibration using a specified number of readings and sample rate on the specified range s Executable When Initiated no Query Command no Coupled Command no RST Condition none Parameters Parameter Parameter Range of Default Name Type Values Units chan numeric 1or2 none readings numeric 100 to 32767 DEFault 1000 none period numeric reference period to reference seconds period 4E8 DEFault 1 0E 4 mode discrete ALL ONE none Comments e When this command completes the new calibration constants are automatically stored to nonvolatile calibration RAM unless CALibration STORe AUTO OFF is set 90 CALibration Commands Appendix A e Before executing CALibration ZERO do the following steps 1 If mode is not ALL use CONFigure or SENSe VOLTage RANGe and SENSe FUNCtion to place the digitizer to the desired range and port 2 Program the input filter and impedance if applicable to the desired settings with INPut FILTer and INPut
77. mand is executed Example Setting New Calibration Constants The following program loads 62 calibration constants into the digitizer and then stores the new constants to nonvolatile calibration RAM If you want to verify that the new constants are stored you can run the READ_CAL program in Reading Calibration Constants Substitute the values of your calibration constants for the example values listed in lines 120 160 IRE STORE LOAD_CAL ASSIGN Dig TO 70905 Assign Dig to 70905 ASSIGN Digu TO 70905 FORMAT OFF Turn FORMAT OFF for array data INTEGER Array 0 61 Dimension array for cal constants INPUT Enter channel number 1 or 2 for constants Chan DATA 147 939 533 336 819 450 21 59 30 58 21 88 15 57 21 DATA 99 42 43 387 310 117 2047 2048 328 397 300 306 407 DATA 290 290 413 284 343 385 312 310 387 310 293 391 DATA 306 277 390 307 279 393 304 279 397 300 281 391 DATA 306 280 392 305 281 395 302 281 390 307 READ Array Read new calibration constants OUTPUT Dig FORM PACK Set PACKed format OUTPUT Dig CAL amp VAL Chan amp SEC STAT OFF E1429 Turn calibration security OFF assuming factory set code of E1429 OUTPUT Dig CAL amp VAL Chan amp STOR AUTO OFF Disable storage of cal constants OUTPUT Dig USING K CAL amp VAL Chan amp DATA 3124 Specify 124 bytes 62 constants OUTPUT Digu Array CHR 10 END Send array of calibration constants OUTPUT
78. on SECure STATe CALibration VALue Appendix A CALibration Commands 91 Example PUD Description NOTE Parameters Comments Related Commands Example Performing a zero calibration CAL SEC STAT OFF E1429 CAL1 ZERO DEF DEF ALL Disable security assuming factory set security code Calibrate channel 1 using default sample rate and number of points and calibrate all gain ranges on ports 1 and 3 PUD lt mask gt stores specified data in digitizer nonvolatile calibration RAM The data must be sent in IEEE 488 2 definite or indefinite block format Calibration security must have previously been disabled The query form returns the current protected user data in IEEE 488 2 definite block format The query form can be executed regardless of the state of calibration security When shipped from the factory the protected user data area contains the date of the digitizer s last calibration string characters Executable When Initiated yes Query Command yes Coupled Command no RST Condition unaffected Parameter Parameter Range of Default Name Type Values Units mask block data or 0 through 63 none e Calibration security must have previously been disabled to send data to the protected user data area e If there is no data in protected user memory Error 312 PUD memory lost occurs CALibration SECure STATe Sending protected user data PUD 229La
79. pecify equipment settings for test equipment except in general terms It is assumed that a qualified service trained technician will select and connect the cables adapters and probes required for the test The results of each performance verification test may be recorded in Table 3 1 HP E1429A B Digitizers Performance Test Record This form can be copied if desired Each verification test procedure includes an example program that performs the test All example programs assume the following e Controller is an HP 9000 Series 200 300 computer e Programming language is HP BASIC e Digitizer address is 70905 logical address is 40 Chapter 3 Verification Tests 23 Functional Verification Tests NOTE The purpose of the functional verification tests is to verify that the HP E1429A B digitizer is functioning properly The following table lists functional verification tests for the HP E1429A B digitizers For a quick functional verification test of the HP E1429A B digitizers do only Test F 1 Self Test HP E1429A B Digitizers Functional Verification Tests Test Descripton Test Passes if F 1 Self Test Test module functions using TST TST returns 0 F2 DC Common Mode Rejection Ratio DC CMRR Check DC CMRR for 10 Vdc input DC CMRR gt 68 dB F3 AC Common Mode Rejection Ratio AC CMRR Check AC CMRR for 20 Vac PP input 1MHz AC CMRR gt 60 dB
80. r differential 51 15 V range 26 offset for single ended 2046V range 57 gain msb for differential 51 15 V range 27 gain msb for single ended 2046 V range 58 gain Isb for differential 51 15 V range 28 gain Isb for single ended 2046 V range 59 offset for differential 102 30 V range 29 offset for single ended 5115 V range 60 gain msb for differential 102 30 V range 30 gain msb for single ended 5115 V range 61 gain Isb for differential 102 30 V range Related Commands CALibration STORe Example 1 Sending array of new calibration constants ASSIGN Dig TO 70905 Assign I O path to 70905 ASSIGN Digu TO 70905 FORMAT OFF Turn FORMAT OFF for array data OUTPUT Dig FORM PACK Set PACKed format CAL1 SEC STAT OFF E1429 Turn calibration security OFF assuming factory set code of E1429 OUTPUT Dig USING K CAL1 DATA 3124 Specify 124 bytes coming 62 constants OUTPUT Digu Array CHR 10 END Send array of calibration constants 80 CALibration Commands Appendix A Example 2 Query calibration constants on channel 2 DIM Ndig 1 Count 9 ASSIGN To TO 70905 ASSIGN From TO 70905 FORMAT OFF OUTPUT To FORM PACK OUTPUT To CAL2 DATA ENTER From USING X K K Ndig Count 1 VAL Ndig Strip the header preceeding data ALLOCATE INTEGER Cal_data 1 VAL Count 2 Allocate an array to ENTER From Cal_data ENTER To USING B Line_feed CALibration DELay Dimension parameters for
81. r within the macro definition 273 Illegal macro label The macro label defined in the DMC command was too long the same as a common command keyword or contained invalid header syntax 274 Macro parameter error The macro definition improperly used a macro parameter placeholder 275 Macro definition too long The commands within the macro could not be executed because the string or block contents were too long 276 Macro recursion error A macro program data sequence could not be executed because the sequence leads to the execution of a macro being defined 277 Macro redefinition not A macro label in the DMC command could not be executed allowed because the macro label was already defined 278 Macro header not found A legal macro label in the GMC query could not be executed because the header was not previously defined 312 PUD memory lost The protected user data saved by the PUD command has been lost 313 Calibration memory lost The nonvolatile calibration data used by the CAL command has been lost 330 Self test failed Note the information associated with the message for a description of the failure 350 Queue overflow The digitizer error queue is full and additional errors have occurred Appendix C Error Messages 99 Table C 1 HP E1429A B Error Messages cont d 410 Ouery INTERRUPTED The digitizer was sent a command before it was
82. racy on all ports If the digitizer fails the DC voltage accuracy test perform the electronic adjustments in Chapter 4 Adjustments and rerun the test If the test then fails do the mechanical adjustments in Chapter 4 and rerun the test If the test still fails replace the instrument e Set up the equipment as shown in Figure 3 3 e Set the source output for 0 07 Vdc The DC Standard Datron 4708 Option 10 can produce dangerous voltages that are present on the terminals Do not touch the front or rear panel terminals unless you are sure no dangerous voltage is present E1429 33 Figure 3 3 DCV Accuracy Test Setup 34 Verification Tests Chapter 3 Test Procedure 1 Set Port 1 to measure DCV input MEAS1 ARR VOLT 100 1 DEF 1 Set digitizer for 100 readings on port 1 2 Input specified voltage from Datron 4708 Use values in following table 3 Read measurement and record the reading in Table 3 1 ENTER statement Returns reading Perform steps 1 3 for each port range and input in the following table DC Voltage Accuracy Test Ranges Inputs Vdc Range 1023V 2046V 5115V 1 023V 2 046V 5 115V 10 23V 20 46V 51 15V 102 3V Port 1 0 07 0 15 0 35 0 7 Inputs 0 03 0 06 0 15 0 3 N A N A N A N A N A N A 0 03 0 06 0 15 0 3 0 07 0 15 0 35 0 7 Port 2 0 07 0 15 0 35 0 7 Inputs 0 03 0 06 0 15 0 3 N A N A N A N A N A N A 0 03 0 06 0 15 0 3 0 07 0
83. s where Datron Accuracy ppm Accuracy Relative to Calibration Standards ppm OUTPUT ppm FS and FS 2 x range for all ranges The assumed test conditions are e Temperature of 23 C 1 C e Maximum of 90 days since calibration Calculate DCV From Section 6 Specifications of the Datron 4708 User s Handbook Measurement DC Voltage Option 10 Accuracy follows where Datron Accuracy Uncertainty ppm OUTPUT ppm FS Datron Range Datron Calibration Measurement Volts Accuracy Uncertainty Uncertainty Equation ppm ppm in u V 1 0000000 V 2 0 4 2 4 0 x Input in V 0 8 10 000000 V 1 0 15 1 5 2 5 x Input in V 3 0 100 00000 V 2 0 25 2 4 0 x Input in V 50 0 Example Calculate DC Since Measurement Uncertainty Datron Accuracy Calibration Voltage Measurement Uncertainty for a 5 0 Vdc OUTPUT and 10 000000 V range the Uncertainty Measurement Uncertainty uV 1 0 x 5 0 2 x 0 15 x 10 1 5 x 5 0 15 5 uV 1 55 E 5 V Appendix B Calculating Digitizer Accuracy 95 Test Accu racy For the HP E1429A B digitizers Test Accuracy Ratio TAR is Ratio TAR Maximum Input C a l cu lat ions le Measurement Uncertainty where Maximum Input and Measurement Uncertainty are in Vdc Example Calculate For this example assume a 0 5 Vdc input to Port 1 or 2 with the digitizer Single Ended Port TAR setto the 0 51125V to 0 5115V range From Table 3 1 Maximum
84. st Calibration 27 May 1993 Send information to protected user data area 92 CALibration Commands Appendix A Appendix B Calculating Digitizer Accuracy Introduction NOTE Digitizer Accuracy Definition Measurement Uncertainty Definition Test Accuracy Ratio TAR Definition This appendix shows how HP E1429A B digitizer accuracy source equipment measurement uncertainty and test accuracy ratio TAR values are defined and calculated for the performance verification tests for the digitizers See Table 3 1 HP E1429A B Digitizers Performance Test Record for 1 year specification values of digitizer accuracy 90 day specification values for the Datron 4708 measurement uncertainty and test accuracy ratios TARs Digitizer accuracy measurement uncertainty and test accuracy ratios in Table 3 1 are valid ONLY for the specified test conditions and assumptions described in this manual Digitizer accuracy is the expected accuracy of the measurement due ONLY to the digitizer The Minimum entry in Table 3 1 is the lower value of digitizer accuracy while the Maximum entry is the upper value of digitizer accuracy If a measured reading is between the Minimum and Maximum values in Table 3 1 the test passes for this input Measurement Uncertainty is the expected accuracy of the source used to input signals to the multimeter Since the Datron 4708 Autocal Multifunction Standard is the source used for inputs
85. stable environment For differential port inputs DC Accuracy is specified for the average of 100 readings with inputs terminated in lt 1 kQ with CAL ZERO performed within 24 hours prior to reading in a stable environment For this example assume a 0 5 Vdc input to Port 1 or 2 with the digitizer set to the 0 51125V to 0 5115V range From Appendix A Specifications of the HP E1429A B Digitizers User s Manual DCV Accuracy 0 4 of reading 0 25 of peak to peak full scale For a 0 5 Vdc input DC Accuracy 0 004 x 0 5 0 0025 x 0 5115 0 51125 0 00456 Vdc Thus in Table 3 1 Maximum 0 5 0 00456 0 50456 Vdc and Minimum 0 5 0 00456 0 49544 Vdc For this example assume a 5 0 Vdc input to Port 3 or 4 with the digitizer set to the 5 1125V to 5 115V range From Appendix A Specifications of the HP E1429A B Digitizers User s Manual DC Accuracy 0 5 of reading 1 0 of peak to peak full scale For a 5 0 Vdc input DCV Accuracy 0 005 x 5 0 0 01 x 5 115 5 1125 0 127 Vdc Thus in Table 3 1 Maximum 5 0 0 127 5 127 Vdc and Minimum 5 0 0 127 4 873 Vdc 94 Calculating Digitizer Accuracy Appendix B Measu reme nt Measurement uncertainties for the Datron 4708 source are calculated using U nce rtai nty the 90 day accuracy specifications in the Datron 4708 User s Handbook C I Measurement Uncertainty Datron Accuracy Calibration Uncertainty aicu ation
86. stments e Flat Frequency Response Flatness Adjustments The electronic adjustments shown in Making Electronic Adjustments MUST be done before doing any of the mechanical adjustments Also the AC CMRR adjustment must be done before the Flatness adjustment This procedure allows the user to minimize the differential voltage by adjusting AC CMRR to maximum This procedure adjusts the digitizer so that AC Common Mode Rejection Ratio AC CMRR for the differential input ports is maximized This in turn minimizes the differential voltage for the digitizer As shown in Figure 4 2 to perform AC CMRR adjustments an input of 20 0 Vac PP 999990 Hz is applied simultaneously to the HI and LO inputs of differential port 3 or port 4 with the digitizer set to the 0 1V range Capacitor C306 for channel 1 or C406 for channel 2 is then adjusted until the differential voltage is minimized AC CMRR e 2 LA VV Figure 4 2 AC CMRR Adjustments Chapter 4 Adjustments 55 Equipment Setup e Set up the equipment as shown in Figure 4 3 e Set DC source output to 20 0 Vac PP E 999990 Hz WARNING The DC Standard Datron 4708 Option 20 can produce dangerous voltages that are present on the terminals Do not touch the front or rear panel terminals unless you are sure no dangerous voltage is present Adjust With Adjustment Too lt f i pplied Figure 4 3 AC CMRR Adjustments Setup T
87. the order shown above This procedure adjusts each range for ports 1 through 4 on the digitizer This procedure uses default settings for the zero offset and gain adjustments See Appendix A CALibration Commands to change settings as required e Connect the equipment as shown in Figure 4 1 e Set the DC source output to 1 0 Vdc The DC Standard Datron 4708 Option 10 can produce dangerous voltages that are present on the terminals Do not touch the front or rear panel terminals unless you are sure no dangerous voltage is present rt 3 HI Port 3 LO Port 4 HI 4 LO 100 00 O Figure 4 1 Electronic Adjustments Setup 48 Adjustments Chapter 4 Adjustment 1 Reset the digitizer Procedure RST CLS Reset digitizer 2 Read starting number of calibrations CAL COUN Query calibration count 3 Adjust A D converter delay constant CAL STOR AUTO OFF Do not store cal constants CAL SEC STAT OFF E1429 Turn cal security OFF CAL DEL Calibrate delay constant for A D converter 4 Make zero offset adjustments for channels 1 and 2 CAL1 ZERO DEF DEF ALL Zero offset cal on channel 1 CAL2 ZERO DEF DEF ALL Zero offset cal on channel 2 5 Make gain adjustments for all ranges on ports 1 4 CONF lt chan gt ARR VOLT 1000 lt input gt DEF lt port gt Configure each channel for 1000 readings for the input and port specified CAL lt chan gt VAL lt input gt Specify voltage level to be
88. tifying the Problem Making Visual Checks NOTE identify the problem and then isolate the cause to a replaceable part See Chapter 5 Replaceable Parts for digitizer replaceable parts If the problem cannot be isolated to a replaceable part listed in Table 5 2 exchange or replace the entire instrument Individual PCAs cannot be exchanged or replaced See Table 5 1 for exchange part numbers Table 6 1 lists some common problems for the HP E1429A B digitizers along with symptoms and possible solutions If a problem cannot be identified using these steps replace or exchange the entire module Table 6 1 HP E1429A B Digitizers Typical Problems Symptom Recommended Action Non zero error code in response to SYST ERR See Appendix C Error Messages Module not responding to commands See Making Visual Checks Module fails verification test See Testing the Module Chapter 3 Verification Tests Visual checks for the digitizers include the following See Table 6 2 for typical checks e Check for heat damage e Check fuses switches jumpers e Check connector contacts See the HP E1429A B User s Manual for information on logical address and IRQ settings If there are no apparent problems following the visual checks run the verification tests in Chapter 3 to see if the module is defective 70 Service Chapter 6 Table 6 2 HP E1429A B Digitizers Visual Checks Test C
89. tion Ratio Adjustments 040 55 Fiatness BAJISTAS ss 6444524884 RE RA DEERE EER ER SR S A 39 Chapters Replaceable Paris asa RA a da ARE A A AA 63 IMESAUCI N Sari o RA AR 63 Exchatice Modules EIA ER SR ah CB Re ER OSE A 63 Replaceable Pars LIIS an os oH 64 SSG s nos s sh SCRE HOSES BSG ARSED 63 ECOMPONRSIELOCIOES cir 24444440444 o oR eR EOE RO EES 65 Chapter Gy Senes ace E AAA ERED A HS AR BERR ER SDS HES 69 INGUNONON 6 ee ek oa dh hi oe ee ee Re ee ee EE N 69 Bquipment Khequited 2445446842444 420 ph bebe bSeOEEES EDA 69 PIS PIS inh Regie heh Dae koe a oO ee ke ee me 69 Recommended Repair Strategy ss pe a GB SB CB Se OE SEEDERS EWE OE OS 69 TroubleshootingGuidelnes ss cerere eae HES ERS RE eRe GS EES A aD 70 identiyme the Problem soso ARG GSAS SEDED ERE USE ODS 70 Makas Visual Check 22 ek dk ee ROH RRR ERE REE EE ARES SEES 70 T stine the Module 2444602260284 48485548408 6 sh See boo amp S 71 DISASSEMIDIY cocos OA GRA AR AR de DOE ESS OA F l Repair Maintenance Guidelines gt ss cab ed SR ACRA AA 74 ESD PERU 2 3 6h Bw Ha e se EWES E A ri SUES 74 Soldering Printed Circuit Boards es 244660645 he bee eRe RO oi 74 Post Kepait Safety Checks gt gt o cos scr To Appendix A CALibration Commands oo an ai ewer een nee 77 Command SUNOS derredor EMERGES ROA SDR SSS ey Appendix B Calculating Digitizer Accuracy 1 lt lt ee ee ee 93 Lice Sis ee ee ee ae ea ee ee 93 Digi
90. tizer Accuracy Calculations c 2444424424256 54 SRR SRS eriti 94 DC Voltage Accuracy Equations 24 sie i bata de wee bie eee cans 94 Measurement Uncertainty Calculations lt 24k h2 e 2858802 AR SDR e EH aS 95 Calculate DCV Measurement Uncertainty o e ee ee is 95 Test Accuracy Ratio TAR Calculations sa osa sosar ea ee eee ew es 96 Appendix C Error Message 640 4a ck vara AAA AA 97 Introduction 2 4 44 AGREE KR OOS E ERK abh SB OE EE dh Ab Ee KORE EEE EOS 97 Digitizer Error Messages aca ey eh eGR EROS RSS AR ES 97 2 Contents HP E1429A B 2 Channel Digitizer Service Manual What s in this Manual Manual Overview This manual shows how to service the HP E1429A B 20 MSa s Digitizers See the HP E1429A B User s Manual for additional information on installing configuring and operating the instrument Consult the appropriate mainframe manual for information on configuring and operating the mainframe Manual Content Chap Title Content 1 General Lists basic instrument descriptions tools and test equipment required for Information service and procedures to inspect and ship the instruments 2 Setting Calibration Shows how to read enter calibration constants and protected user data and Values how to enter a new calibration security code 3 Verification Describes self tests and functional verification tests for the instruments Tests 4 Adjustments Shows how to perform adjustm
91. uracy Test PRINT continued on next page Chapter 3 Verification Tests 37 790 PRINT Date DATE TIMEDATE 800 PRINT Time TIME TIMEDATE 810 PRINT 820 PRINT Port Range Input Minimum Measured Maximum Pass Fail 830 PRINT Vdc Vdc Vdc Vdc Vdc 840 PRINT 850 Fmt IMAGE D 3X 3D 5D 3X S3D 2D 3X S3D 5D 3X S3D 5D 3X S3D 5D 4X 4A 860 FOR l 1 TO 4 870 IF l 1 OR 2 THEN Nbr_print 4 880 IF l 3 OR l 4 THEN Nbr_print 10 890 FOR J 1 TO Nbr print 900 FOR K 4 J 3 TO 4 J 910 PRINT USING Fmt l Range J Input K Lower l J K Result l J K Upper l J K Flag l J K 920 IF Next K E OR Next K e THEN End_print 930 NEXT K 940 NEXT J 950 NEXT I 960 End print 970 GOTO End prog 980 1000 1010 Test fail 1020 CLEAR SCREEN 1030 Flag l J K FAIL 1040 BEEP 1050 PRINT NOTE 1060 PRINT 1070 PRINT The measurement test FAILED for the Input K V input 1080 PRINT on the Range J V range 1090 PRINT 1100 PRINT Measured voltage DROUND Result I J K 4 V 1110 PRINT Expected voltage DROUND Input K 4 V 1120 PRINT Maximum Limit DROUND Upper l J K 4 1130 PRINT Minimum Limit DROUND Lower l J K 4 1140 PRINT 1150 PRINT Be sure the DC Standard OUTPUT is set to Input K V 1160 PRINT and the DC Standard OUTPUT switch is set to ON 1170 PRINT 1180 Reenter 1190 INPUT End this test E retry this measurement R or do next measurement N
92. uracy for information on accuracy measurement uncertainty and TAR calculations Digitizer Test Test limits are defined using the 1 year specifications in Appendix A Limits Specifications of the HP E1429A B User s Manual See Appendix B Calculating Digitizer Accuracy in this manual for sample calculations of digitizer test limits Measurement For the performance verification tests in this manual the measurement Unce rtainty uncertainties are based on the 90 day accuracy specifications for the Datron 4708 Source See Appendix B Calculating Digitizer Accuracy in this manual for sample calculations of measurement uncertainty Test Accu racy Test Accuracy Ratio TAR for the HP E1429A B digitizers is defined as Ratio T A R Digitizer Accuracy divided by Measurement Uncertainty where accuracy maximum allowable value expected reading input That is Maximum Input TARS MeasurementUncertainty For TARs that exceed 10 1 the entry is gt 10 1 40 Performance Tests Chapter 3 Table 3 1 HP E1429A B Digitizers Performance Test Record Page 1 of 5 Test Facility Name Report No Address Date City State Customer Phone Tested by Model Ambient temperature C Serial No Relative humidity Options Line frequency Hz nominal Firmware Rev Special Notes Chapter 3 Performance Tests 41 Table 3 1 HP E1429A B Digitiz
93. urements for 0 Vdc input Set Datron output to 0 0 Vdc MEAS1 ARR VOLT 100 0 1 DEF 3 ENTER statement A Vos SUM A 100 Set digitizer for ch I meas 100 readings 0 1V range input on port 3 Store 100 readings in data array A Compute average value for 0 0 Vdc input Vos 2 Make Channel 1 measurements for 10 0 Vdc input Set Datron output to 10 0 Vdc MEAS1 ARR VOLT 100 0 1 DEF 3 ENTER statement B Vavg SUM B 100 3 Compute DC CMRR Cmrr 20 LOG10 10 0 Vavg_Vos 4 Repeat the test for Channel 2 Vdc input Make connections to port 4 HI and LO MEAS2 ARR VOLT 100 0 1 DEF 4 Set digitizer for ch I meas 100 readings 0 1V range input on port 3 Store 100 readings in data array B Compute average value for 10V input Vavg Calculate DC CMRR Set digitizer for ch 2 meas 100 readings 0 1 V range input on port 4 Chapter 3 Verification Tests 27 Example Program This program makes 100 readings of the offset voltage on channels 1 and 2 and displays the DC Common Mode Rejection Ratio DC CMRR for each channel RE STORE DC_CMRR 20 30 40 50 ASSIGN Dig TO 70905 Assign Dig to digitizer address 60 DIM A 1 100 B 1 100 Dimension arrays for measured values 70 FOR Chan 1 TO 2 Loop for channels I and 2 80 PRINT Channel Chan DC Common Mode Rejection Ratio Test 90 PRINT 100 PRINT 1 Connect DC source to Port Chan 2 HI and LO 110 PRINT 2 Set DC source output to
94. z WARNING The DC Standard Datron 4708 Option 20 can produce dangerous voltages that are present on the terminals Do not touch the front or rear panel terminals unless you are sure no dangerous voltage is present N 7 Figure 3 2 AC CMRR Test Setup 30 Verification Tests Chapter 3 Test Procedure 1 Make Channel 1 measurements MEAS1 ARR VOLT 1000 0 1 DEF 3 Set digitizer for ch 1 meas 1000 readings 0 1V range input on port 3 ENTER statement A Store readings in array A 2 Compute AC CMRR Std_dev see formula on page 3 8 Calculate standard deviation of measurements Cmrr 20 LGT 7 0714356 std_dev Calculate AC CMRR for 20 0 Vac PP 1 MHz 3 Repeat the test for Channel 2 input Make connections to port 4 HI and LO MEAS2 ARR VOLT 1000 0 1 DEF 4 Set digitizer for ch 2 meas 1000 readings 0 1V range input on port 4 Repeat steps 1 through 3 for channel 2 Example Program This program takes 1000 readings of the voltage on channels 1 and 2 and displays the AC Common Mode Rejection Ratio AC CMRR RE STORE AC CMRR Addr 70905 Factory set address INPUT Enter digitizer Logical Address default 70905 Addr User selects Logical Address ASSIGN Dig TO Addr Assign Dig to digitizer address DIM A 1 1000 Dimension array to hold readings FOR Chan 1 TO 2 Loop for both channels CLEAR SCREEN PRINT Channel Chan AC Common Mode Rejection Ratio

HP E1429A/B 2-Channel Digitizer Servcie Manual

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