PROCEDUREv2.10
U P /R
    ***** DCX-127 PROGRAMMABLE DC OUTPUT ADJUSTMENT PROCEDURE *****/R/R
          Copyright (C) 1988, 1991, 1992 Audio Precision Inc./R/R/R/R/R/R/R
A PRECISION DC VOLTMETER (<0.01%) IS REQUIRED FOR CALIBRATION.  PERFORM/R
ANY ADJUSTMENTS BETWEEN +20C AND +25C ONLY./R
/R/R/R/R/R/R/R
PRESS <Enter> TO CONTINUE, <F1> TO ABORT.../E
L T DCVOFF/R
/F2 /R/R/R/R/R/R/R
CONNECT THE PRECISION DC VOLTMETER TO DC OUTPUT-1./R
ADJUST R5403 FOR 0.0 mV, +\-0.1 mV.../R/R
     -------------------------------------------------/R
     |  DCX-127/R
     |/R
     |/R
     |        R5403--> O O O O/R
     |/R
     |/R
     |/R
     |                 O   O/R
     -------------------------------------------------/E
L T DCV1CAL/R
/F2 /R/R/R/R/R/R/R
ADJUST R5404 FOR A DC OUTPUT OF +10.000 V, +\-0.003V.../R/R/R
     -------------------------------------------------/R
     |  DCX-127/R
     |/R
     |/R
     |                 O O O O/R
     |                    \/R
     |                    R5404/R
     |/R
     |                 O   O/R
     -------------------------------------------------/E
L T DCVOFF/R
/F2 /R/R/R/R/R/R/R
CONNECT THE PRECISION DC VOLTMETER TO DC OUTPUT-2./R
ADJUST R5503 FOR 0.0 mV, +\-0.1 mV.../R/R
     -------------------------------------------------/R
     |  DCX-127/R
     |/R
     |/R
     |                 O O O O/R
     |                      \/R
     |                      R5503/R
     |/R
     |                 O   O/R
     -------------------------------------------------/E
L T DCV2CAL/R
/F2 /R/R/R/R/R/R/R
ADJUST R5504 FOR A DC OUTPUT OF +10.000 V, +\-0.003 V.../R/R/R
     -------------------------------------------------/R
     |  DCX-127/R
     |/R
     |/R
     |                 O O O O <--R5504/R
     |/R
     |/R
     |/R
     |                 O   O/R
     -------------------------------------------------/E
L T DCV1CMRR/R
U P /R
DISCONNECT THE PRECISION DC VOLTMETER./R/R
CONNECT DC OUTPUT-1 TO THE INPUT TERMINALS OF THE DCX-127 MULTIMETER,/R
ALSO CONNECT THE "-" TERMINAL OF OUTPUT-1 TO THE "+" TERMINAL OF OUTPUT-2./R/R
WHEN THE SWEEPING GRAPH APPEARS ON THE NEXT SCREEN, ADJUST R8402 FOR/R
THE MINIMUM CHANGE IN OUTPUT VOLTAGE VERSUS COMMON MODE VOLTAGE.  THE/R
OUTPUT IS NOT PERMITTED TO CHANGE BY MORE THAN 8 mV FROM -2V TO +2V./R/R/R
     -------------------------------------------------/R
     |  DCX-127/R
     |/R
     |/R
     |                 O O O O/R
     |/R
     |/R
     |/R
     |        R8402--> O   O/R
     -------------------------------------------------/R/R/R
PUSH <Enter> TO CONTINUE.../E
/A9/E
L T DCV2CMRR/R
U P /R/R/R
CONNECT DC OUTPUT-2 TO THE INPUT TERMINALS OF THE DCX-127 MULTIMETER,/R
ALSO CONNECT THE "-" TERMINAL OF OUTPUT-2 TO THE "+" TERMINAL OF OUTPUT-1./R/R
WHEN THE SWEEPING GRAPH APPEARS ON THE NEXT SCREEN, ADJUST R8502 FOR/R
THE MINIMUM CHANGE IN OUTPUT VOLTAGE VERSUS COMMON MODE VOLTAGE.  THE/R
OUTPUT IS NOT PERMITTED TO CHANGE BY MORE THAN 8 mV FROM -2V TO +2V./R/R/R
     -------------------------------------------------/R
     |  DCX-127/R
     |/R
     |/R
     |                 O O O O/R
     |/R
     |/R
     |/R
     |                 O   O <--R8502/R
     -------------------------------------------------/R/R/R
PUSH <Enter> TO CONTINUE.../E
/A9/E
U P /R/R/R
DCX-127 DC OUTPUTS CALIBRATED./E
U END