User Contributed MET/CAL PROCEDURE ================================================================================ INSTRUMENT: HEWLETT-PACKARD 1742A: PART 1 DATE: 09-Jun-82 AUTHOR: User Contributed REVISION: V1.0 ADJUSTMENT THRESHOLD: 70% NUMBER OF TESTS: 60 NUMBER OF LINES: 245 CONFIGURATION: 74 =============================================================================== STEP FSC RANGE NOMINAL TOLERANCE MOD1 MOD2 3 4 CON 1.001 ASK+ R N P J S M A L T W 1.002 ASK- N P F 1.003 DRAW 4 78 4 78 86 15 43 55 1.004 HEAD {VERTICAL AMPLIFIER BANDWIDTH} 1.005 DISP Connect a 50 ohm BNC cable to the Channel A input... 1.006 SET A COUPLING: 50 OHM[DRAW14,15,F] 1.007 SET B COUPLING: 50 OHM[DRAW14,45,F] 1.008 RSLT = CHANNEL A VERTICAL BANDWIDTH > 100MH 1.009 MESS Adjust A POSITION control for a centered display... 1.009 MESS Adjust system frequency for 5.65 divisions of display... 1.010 6071 100MH 20% .08VP -D N L 1.011 MEMC 100MH -0U +20% 2.001 SET DISPLAY MODE: B[DRAW29,35,F] 2.002 SET TRIGGER: B[DRAW13,35,F] 2.003 RSLT = CHANNEL B VERTICAL BANDWIDTH > 100MH 2.004 DISP Move the 50 ohm BNC cable to the channel B input... 2.005 MESS Adjust B POSITION control for a centered display... 2.005 MESS Adjust system frequency for 5.65 divisions of display... 2.006 6071 100MH 20% .08VP -D N L 2.007 MEMC 100MH -0U +20% 3.001 CON 0 3.002 DISP Disconnect the cable from channel B... 3.003 HEAD {CHECK COMMON MODE REJECTION RATIO} 3.004 DISP Connect 9 inch bnc cables to Channel A and Channel B 3.004 DISP thru a 50 ohm power divider Tee. Connect the other end 3.004 DISP of the Tee to a 50 ohm bnc cable. 3.005 SET DISPLAY MODE: A[DRAW29,35,F] 3.006 MESS Adjust system stimulus for 8 divisions of vertical 3.006 MESS deflection... 3.007 6071 .08VP 3% 20MH -D N L 3.008 SET CH B INVT: ON[DRAW0,40,F] 3.009 SET DISPLAY MODE: A+B (COMPOSITE)[DRAW29,35,F] 3.010 6071 VP 20MH S 3.011 MESS 3.012 RSLT = COMMON MODE REJECTION RATIO @ 20MH 3.013 EVAL {Is deflection less than .8 divisions ?} 4.001 CON 0 4.002 DISP Disconnect all connections to the Unit Under Test... 4.003 HEAD {CHECK INTERNAL TRIGGERING} 4.004 SET DISPLAY MODE: A[DRAW29,35,F] 4.004 SET CH B INVT: OUT 4.005 SET TRIGGER: A[DRAW14,35,F] 4.006 RSLT = 25MH @ .3 DIVISIONS INTERNAL TRIGGERING 4.007 DISP Connect a 50 ohm bnc cable to Channel A Input. 4.008 MESS Adjust system stimulus for a .3 division display... 4.009 6071 3mVP 3% 25MH -D N L 4.010 6071 mVP 25MH S L 4.011 SET MAIN TIME/DIV: .05uS[DRAW43,80,F] 4.012 MESS 4.013 EVAL Can a stable display be obtained by adjusting main trigger ? 5.001 RSLT = 100MH @ 1 DIVISION INTERNAL TRIGGERING 5.002 MESS Adjust system stimulus for a 1 division display... 5.003 6071 .01VP 3% 100MH -D N L 5.004 6071 VP 100MH S L 5.005 MESS Readjust Main Trigger Level to obtain a stable display 5.006 EVAL Can a stable display be obtained ? 6.001 RSLT = 100MH @ 1 DIVISION INTERNAL DELAYED TRIGGERING 6.002 6071 VP 100MH S L 6.003 SET MAIN TIME/DIV: .1uS[DRAW43,80,F] 6.004 SET DELAYED TIME/DIV: .05uS[DRAW43,80,F] 6.005 DISP SWEEP AFTER DELAYED: TRIG (IN)[DRAW45,90,F] 6.006 SET SWEEP MODE: DELAYED[DRAW57,75,F] 6.007 MESS 6.008 DISP Adjust delayed TRIGGER LEVEL to obtain stable display 6.008 DISP (readjustment of MAIN TRIGGER LEVEL may be required) 6.009 EVAL Can a stable display be obtained? 7.001 6071 3mVP 25MH S L 7.002 RSLT = 25MH @ 3mV INTERNAL DELAYED TRIGGERING 7.003 DISP Readjust DELAYED and MAIN trigger levels if necessary 7.003 DISP to obtain stable display. 7.004 EVAL Can a stable display be obtained? 8.001 DISP Disconnect all connections to the Unit Under Test... 8.002 CON 0 8.003 DISP SWEEP AFTER DELAY: AUTO 8.004 HEAD {CHECK EXTERNAL TRIGGERING} 8.005 DISP Connect a 9 inch 50 ohm cable to Channel A, connect a 8.005 DISP 9 inch 50 ohm cable to MAIN EXT TRIGGER thru a 50 ohm 8.005 DISP terminator. Connect each 9 inch cable to a 50 ohm power 8.005 DISP divider. Connect the other end of the divider to a 48 8.005 DISP inch BNC cable. 8.006 SET A VOLTS/DIV: .05V[DRAW14,20,F] 8.007 DISP MAG X10: IN[DRAW57,75,F] 8.008 SET MAIN TRIGGER INT/EXT: EXT (IN)[DRAW29,65,F] 8.009 RSLT = 50MH @ .05V EXTERNAL TRIGGERING 8.010 6071 .05VP 50MH S 8.011 MESS Can a stable display be obtained by adjusting the 8.012 EVAL Main trigger level? 9.001 6071 .1VP 100MH S 9.002 MESS 9.003 DISP Adjust MAIN TRIGGER LEVEL to obtain stable triggering... 9.004 SET MAIN TRIGGER INT/EXT: INT (OUT)[DRAW29,65,F] 9.005 DISP DELAYED TRIGGER INT/EXT: EXT (IN)[DRAW16,90,F] 9.006 DISP SWEEP AFTER DELAY: TRIG 9.007 DISP Disconnect cable from MAIN EXT TRIGGER and reconnect 9.007 DISP to DELAYED EXT TRIGGER input.... 9.008 DISP Adjust DELAYED TRIGGER LEVEL (and MAIN TRIGGER LEVEL if 9.008 DISP required) to obtain a stable display... 9.009 RSLT = 100MH @ .1V EXTERNAL TRIGGERING 9.010 EVAL Can a stable display be obtained ? 10.001 6071 .05VP 50MH S 10.002 DISP Adjust DELAYED TRIGGER LEVEL and MAIN TRIGGER LEVEL as 10.002 DISP necessary to obtain a stable display. 10.003 RSLT = 50MH @ 50mV EXTERNAL TRIGGERING 10.004 EVAL Can a stable display be obtained ? 11.001 6071 .1VP 100MH S L 11.002 DISP Adjust DELAYED TRIGGER LEVEL and MAIN TRIGGER LEVEL as 11.002 DISP necessary to obtain a stable display. 11.003 RSLT = 100MH @ .1V EXTERNAL TRIGGERING 11.004 EVAL Can a stable display be obtained ? 12.001 CON 0 12.002 DISP Disconnect all connections to the Unit Under Test... 12.003 DISP SWEEP AFTER DELAY: AUTO 12.004 DISP DELAYED TRIGGER INT/EXT: INT[DRAW14,85,F] 12.005 HEAD {CHECK SWEEP TIME ACCURACY} 12.006 DISP Connect the pulsehead to the Channel A input... 12.007 DISP Connect a BNC cable to the MAIN EXTERNAL TRIGGER input.. 12.008 SET MAIN TRIGGER INT/EXT: EXT (IN)[DRAW29,65,F] 12.009 SET A COUPLING: DC 12.009 SET SWEEP MODE: MAIN[DRAW57,75,F] 12.010 DISP MAG X10: OUT 12.011 SET DELAYED TIME/DIV: OFF[DRAW43,80,F] 12.012 ASK+ R 12.013 MEM2 = TIME/DIV 12.014 SET A VOLTS/DIV: .2V[DRAW25,18,F] 12.015 MESS Adjust the horizontal position control to align markers 12.015 MESS with graticules. 12.016 5001 .05 .05uT 2% 12.017 JMP 17.002 13.001 5001 .1 .1uT 2% 13.002 JMP 17.002 14.001 5001 .2 .2uT 2% 14.002 JMP 17.002 15.001 5001 .5 .5uT 2% 15.002 JMP 17.002 16.001 5001 1 1uT 2% 16.002 JMP 17.002 17.001 JMP 17.007 17.002 SET MAIN TIME/DIV: 1uS 17.003 5001 1uT S 17.004 DISP {Adjust A8R43 on MAIN SWP ASSY board} for one marker per 17.004 DISP division[DRAW43,40,R] 17.005 5001 * S 17.006 JMP 12.016 17.007 5001 2 2uT 2% 17.008 JMP 20.002 18.001 5001 5 5uT 2% 18.002 JMP 20.002 19.001 5001 10 10uT 2% 19.002 JMP 20.002 20.001 JMP 20.007 20.002 SET MAIN TIME/DIV: 10uS 20.003 5001 10uT S 20.004 DISP {Adjust A8R12 on MAIN SWP ASSY board} for one marker per 20.004 DISP division[DRAW43,40,R] 20.005 5001 * S 20.006 JMP 17.007 20.007 5001 20 20uT 2% 20.008 JMP 26.002 21.001 5001 50 50uT 2% 21.002 JMP 26.002 22.001 5001 .1 .1mT 2% 22.002 JMP 26.002 23.001 5001 .2 .2mT 2% 23.002 JMP 26.002 24.001 5001 .5 .5mT 2% 24.002 JMP 26.002 25.001 5001 1 1mT 2% 25.002 JMP 26.002 26.001 JMP 26.007 26.002 SET MAIN TIME/DIV: 1mS 26.003 5001 1mT S 26.004 DISP {Adjust A8R13 on MAIN SWP ASSY board} for one marker 26.004 DISP per division[DRAW43,40,R] 26.005 5001 * S 26.006 JMP 20.007 26.007 5001 2 2mT 2% 26.008 JMP 31.002 27.001 5001 5 5mT 2% 27.002 JMP 31.002 28.001 5001 10 10mT 2% 28.002 JMP 31.002 29.001 5001 20 20mT 2% 29.002 JMP 31.002 30.001 5001 50 50mT 3% 30.002 JMP 31.002 31.001 JMP 31.007 31.002 SET MAIN TIME/DIV: 50mS 31.003 5001 50mT S 31.004 DISP {Adjust A8R14 on MAIN SWP ASSY board} for one marker per 31.004 DISP division[DRAW43,40,R] 31.005 5001 * S 31.006 JMP 26.007 31.007 5001 .1 .1T 3% 32.001 5001 .2 .2T 3% 33.001 5001 .5 .5T 3% 34.001 5001 1 1T 3% 35.001 5001 2 2T 3% 36.001 HEAD {MAIN TIME/DIV ACCURACY X10 MODE} 36.002 DISP MAG X10: IN[DRAW57,75,F] 36.003 5001 .05 .005uT 3% 37.001 5001 .1 .01uT 3% 38.001 5001 .2 .02uT 3% 39.001 5001 .5 .05uT 3% 40.001 5001 1 .1uT 3% 41.001 5001 2 .2uT 3% 42.001 5001 5 .5uT 3% 43.001 5001 10 1uT 3% 44.001 5001 20 2uT 3% 45.001 5001 50 5uT 3% 46.001 5001 .1 .01mT 3% 47.001 5001 .2 .02mT 3% 48.001 5001 .5 .05mT 3% 49.001 5001 1 .1mT 3% 50.001 5001 2 .2mT 3% 51.001 5001 5 .5mT 3% 52.001 5001 10 1mT 3% 53.001 5001 20 2mT 3% 54.001 5001 50 5mT 4% 55.001 5001 .1 .01T 4% 56.001 5001 .2 .02T 4% 57.001 5001 .5 .05T 4% 58.001 5001 1 .1T 4% 59.001 5001 2 .2T 4% 60.001 DISP MAG X10: OUT END