TB 9-6625-2002-35
b. Adjustments
(1) Press POWER switch on the power module to off position.
(2) Remove TI from power module and remove cover from TI.
(3) Connect TI to power module, using extender and pull POWER switch to ON.
(4) Adjust R191 GAIN ADJUST (fig. 1) for a 2.5 V rms indication on the true
(5) Press POWER switch on the power module to off position.
(6) Remove extender and reinstall TI in power module.
Pull module POWER
switch to ON.
a. Performance Check
(1) Connect TI ~ 600 OHM output to the audio analyzer INPUT HIGH through a
600 Ω feedthrough termination (voltage divider, model 11047A).
(2) Position controls as listed in (a) through (d) below:
(a)
(b)
MULTIPLIER X1K pushbutton pressed.
(c)
VAR ATTENUATOR/AMPLITUDE control fully cw.
(d)
STEP ATTEN pushbuttons released.
(3) Position audio analyzer controls to measure distortion.
Audio analyzer will
indicate less than .1 percent distortion.
(4) Position FREQUENCY Hz dial and MULTIPLIER pushbutton to settings
listed in table 4. Audio analyzer will indicate within limits specified.
b. Adjustments. No adjustments can be made.
Test instrument
MULTIPLIER
Audio analyzer
FREQUENCY HZ
pushbutton
indications
dial settings
settings
(%)
2
X10
<0.1
5
X100
<0.1
5
X1K
<0.1
5
X10K
<0.1
1
X100K
<1.0