TB 9-5915-214-35
b. Press POWER pushbutton to ON and allow at least 20 minutes for equipment to
warm-up.
NOTE
Perform dc adjustment checks c through u below for both CH 1
and CH 2. When performing CH 2 adjustments, add the
number 200 to all resistor and capacitor references. For
example referenced in step g below for CH 1 is R253. When
performing the same procedure for CH 2, the resistor would be
R453.
NOTE
When performing CH 1 adjustments, TP 4 is referenced; when
performing CH 2 adjustments, TP 11 needs to be referenced.
When performing CH 1 adjustments, TP 2 is referenced; when
performing CH 2 adjustments, TP 9 needs to be referenced.
c. Short rear panel CH 1 INPUT.
d. Press MODE parameter key until CUTOFF FREQUENCY display indicates h.P.
e. Press OUTPUT GAIN(db) ' control key until display indicates 20.
f. Connect multimeter to rear panel CH 1 OUTPUT.
g. Adjust DC ADJ R253 (fig. 1), located to the right of rear panel CH 1 OUTPUT BNC
connector for multimeter indication of 0 V dc r1 mVdc.
h. Press OUTPUT GAIN(db) ’ control key until display indicates 00.
i. Adjust R268 (fig. 1) until multimeter indicates between 0 V dc r1 mVdc.
j.
Repeat e and g above.
k. Repeat h and i above.
l. Press corresponding keys as listed in (1) through (3) below and verify CUTOFF
FREQUENCY indicates 2.000.
(1) 2 data entry key.
(2) KILO parameter key.
(3) FREQ parameter key.
m. Press MODE parameter key until CUTOFF FREQUENCY display indicates L.P.
n. Press SHIFT parameter key.
4