TB 9-5915-214-35
15. Power Supply and DC Adjustments
a. Connect multimeter to microprocessor card TP 6 and card ground (fig. 2).
b. Adjust R105 (fig. 2), located to the left of the rear panel CH 1 INPUT BNC
connector for multimeter indication of -15 V r0.05 V.
c. Connect multimeter to microprocessor card TP 5 and card ground (fig. 2).
d. Adjust R102 (fig. 2) for multimeter indication of +15 V r0.05 V.
e. Connect multimeter to microprocessor card TP 7 and TP 8 individually, and card
ground (fig. 2).
f.
Verify multimeter indicates +5 V r0.2 V for both test points.
NOTE
Perform procedures of paragraphs 16 through 19 using CH 1,
then repeat procedures using CH 2. When performing CH 2
adjustments, add the number 200 to all capacitor or resistor
references. For example referenced in step j below for CH 1 is
C167. When performing the same procedure for CH 2, the
capacitor would be C367.
a. Press MODE parameter key until CUTOFF FREQUENCY display indicates L.P.
b. Press INPUT(db) ’ and OUTPUT GAIN(db) ’ control keys until displays indicate 00.
c. Press TYPE parameter key until CUTOFF FREQUENCY display indicates bu.
d. Press SHIFT parameter key.
e. Press TYPE parameter key; dC should be displayed in the CUTOFF
FREQUENCY display. If CUTOFF FREQUENCY display does not indicate dC, repeat
steps d and e until dC is displayed.
f. Press corresponding keys as listed in (1) through (4) below and verify CUTOFF
FREQUENCY indicates 25.00.
(1) 2 data entry key.
(2) 5 data entry key.
(3) KILO parameter key.
(4) FREQ parameter key.
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