TB 9-6625-2102-35
Test instrument
FREQ/PERIOD MULT (Hz/s)
Oscilloscope
VARIABLE
Switch
settings
indications
control fully
10/1k
ccw
< 10 Hz
.1/10
cw
> 10 Hz
-
< .1 Hz
ccw
(8) Perform steps as listed in (a) through (c) below for each row in table 5.
(a) Set TI FREQ/PERIOD MULT (Hz/s) to switch settings.
(b) Adjust TI VARIABLE control to settings.
NOTE
All out-of-tolerance indications, perform b below:
Test instrument
Oscilloscope duty cycle
indications
FREQ/PERIOD MULT
(%)
(Hz/s)
VARIABLE
Switch
Min
Max
settings
control fully
10/1k
cw
49
51
-
ccw
49
51
1K/100K
ccw
49
51
-
cw
45
55
(9) Disconnect TI from oscilloscope.
b. Adjustments
(1) Connect TI MODULATION GENERATOR OUT (600 Ω) to audio analyzer
INPUT HIGH.
(2) Set up audio analyzer to measure frequency.
(3) Set FREQ/PERIOD MULT (Hz/s) switch to 1K/100K and adjust VARIABLE
control fully cw.
(4) Adjust R48 (fig 1) until audio analyzer indicates between 100.0 and 100.4 kHz (R).
CHANGE 1
6