User Contributed                                           MET/CAL PROCEDURE
================================================================================
INSTRUMENT:            HEWLETT-PACKARD 1742A: PART 4
DATE:                  09-Jun-82
AUTHOR:                User Contributed
REVISION:              V1.0
ADJUSTMENT THRESHOLD:  70%
NUMBER OF TESTS:       24
NUMBER OF LINES:       122
CONFIGURATION:         66
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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-                        P                            F
  1.003  HEAD         {DEFLECTION FACTOR}
  1.004  DISP         Connect the pulsehead to the channel A input and a 50
  1.004  DISP         ohm BNC cable to the MAIN EXT TRIGGER input...
  1.005  SET          A COUPLING: GND
  1.005  SET          DISPLAY MODE: A
  1.006  DISP         Use the A POSITION control to set the trace on the
  1.006  DISP         bottom graticule of the display...
  1.007  SET          A COUPLING: DC
  1.008  MEM2         ={Channel A}
  1.009  5001   20    160VP          3%
  1.010         JMP   11.002
  2.001  5001   10    80VP           3%
  2.002         JMP   11.002
  3.001  5001   5     40VP           3%
  3.002         JMP   11.002
  4.001  5001   2     16VP           3%
  4.002         JMP   11.002
  5.001  5001   1     8VP            3%
  5.002         JMP   11.002
  6.001  5001   .5    4VP            3%
  6.002         JMP   11.002
  7.001  5001   .2    1.6VP          3%
  7.002         JMP   11.002
  8.001  5001   .1    .8VP           3%
  8.002         JMP   11.002
  9.001  5001   .05   .4VP           3%
  9.002         JMP   11.002
 10.001  5001   .02   .16VP          3%
 10.002         JMP   11.002
 11.001  JMP          11.007
 11.002  SET          A VOLTS/DIV: .2V
 11.003  5001         1VP                                               S
 11.004  DISP         {Adjust A3R65 (composite gain) on Vertical Preamplifier}
 11.004  DISP         Assy board for 5 divisions[DRAW33,55,T]
 11.005  5001         *                                                 S
 11.006  JMP          1.009
 11.007  SET          DISPLAY MODE: B
 11.008  MEM2         ={Channel B}
 11.009  DISP         Disconnect pulse head from Channel A and connect to
 11.009  DISP         Channel B...
 11.010  SET          B COUPLING: GND
 11.011  DISP         Use the B POSITION control to position the trace on the
 11.011  DISP         bottom graticule of the display...
 11.012  SET          B COUPLING: DC
 11.013  5001   20    160VP          3%
 11.014         JMP   21.003
 12.001  5001   10    80VP           3%
 12.002         JMP   21.003
 13.001  5001   5     40VP           3%
 13.002         JMP   21.003
 14.001  5001   2     16VP           3%
 14.002         JMP   21.003
 15.001  5001   1     8VP            3%
 15.002         JMP   21.003
 16.001  5001   .5    4VP            3%
 16.002         JMP   21.003
 17.001  5001   .2    1.6VP          3%
 17.002         JMP   21.003
 18.001  5001   .1    .8VP           3%
 18.002         JMP   21.003
 19.001  5001   .05   .4VP           3%
 19.002         JMP   21.003
 20.001  5001   .02   .16VP          3%
 20.002         JMP   21.003
 21.001  5001         *                                                 S
 21.002  JMP          21.009
 21.003  SET          B VOLTS/DIV: .2V
 21.004  5001         1VP                                               S
 21.005  DISP         {Adjust A3R46 (Channel B GAIN)} for 5 divisions of
 21.005  DISP         deflection [DRAW33,55,T]
 21.006  5001         *                                                 S
 21.007  JMP          11.013
 21.008  CON          0
 21.009  DISP         Disconnect all connections to the Unit Under Test...
 21.010  HEAD         {CALIBRATOR VERIFICATION}
 21.011  SET          A VOLTS/DIV: .2V
 21.011  SET          MAIN TIME/DIV: .5mS
 21.012  SET          DISPLAY MODE: A
 21.013  DISP         Connect the CAL 1V output to the input of the comparator
 21.013  DISP         head marked FROM DUT CALIBRATOR. Connect the CHOPPED
 21.013  DISP         OUTPUT of the comparator to channel A INPUT.
 21.014  MESS         Set the comparator head on Int. termination 'OPEN' and
 21.014  MESS         depress 'AUTO'. Adjust stimulus for waveform coincidence
 21.015  5001         1VP            1%                           -D CO
 22.001  DISP         Disconnect the comparator head and connect the CAL 1V
 22.001  DISP         output to Channel A input.
 22.002  SET          A VOLTS/DIV: .1V
 22.002  SET          MAIN TIME/DIV: .05uS
 22.003  MESS         Rotate variable 'CAL' to obtain 6 divisions of display
 22.004  EVAL   {Is the rise time < .1uS ?}
 23.001  HEAD         {ASTIGMATISM AND FOCUS ADJUSTMENT}
 23.002  SET          MAIN TIME/DIV: 1S
 23.003  DISP         TIME/DIV VERNIER: FULLY COUNTER-CLOCKWISE[DRAW29,75,F]
 23.004  DISP         BEAM INTENSITY: BARELY VISIBLE SPOT[DRAW57,60,F]
 23.005  MESS         While spot slowly moves across CRT, adjust FOCUS on
 23.005  MESS         panel and ASTIGMATISM on rear panel for smallest and
 23.005  MESS         best defined spot
 23.006  EVAL   {Can a well defined spot be obtained ?}
 24.001  DISP         Disconnect all connections to the Unit Under Test...
END