TB 9-6625-2188-24
a. Connect TI to power module using extender.
b. Connect power module to a 115 V ac source.
c. Pull power module PULL ON POWER switch to ON and allow at least 30 minutes
for TI to reach operating temperature.
8. Frequency Accuracy
a. Performance Check
(1) Connect SYNC OUT to frequency counter.
(2) Position controls as listed in (a) through (g) below.
FREQUENCY Hz dial to 4.
(a)
Frequency multiplier pushbutton x1k pressed.
(b)
OUTPUT LEVEL (dBm) switch to 0.
(c)
OUTPUT LEVEL (dBm) CAL control fully cw (to detent).
(d)
ON-OFF pushbutton to ON (in).
(e)
GNDED FLTG pushbutton to FLTG (out).
(f)
INTERMOD TEST SIG pushbutton to OFF (out).
(g)
(3) If frequency counter does not indicate between 3.880 and 4.120 kHz,
perform b below.
(4) Position controls for values listed in table 3 below.
Frequency counter will
indicate within limits specified.
Table 3. Dial Accuracy
Test instrument
Frequency counter indications
FREQUENCY
Frequency multiplier
HZ
pushbuttons positions
dial positions
(In)
Min
Max
1
x10
9.700
Hz
10.300
Hz
5
x10
48.500
Hz
51.500
Hz
10
x10
97.000
Hz
103.000
Hz
1
x100
97.000
Hz
103.000
Hz
5
x100
485.000
Hz
515.000
Hz
10
x100
0.970
kHz
1.030
kHz
1
x1 k
0.970
kHz
1.030
kHz
5
x1 k
4.850
kHz
5.150
kHz
10
x1 k
9.700
kHz
10.300
kHz
1
x10 k
9.700
kHz
10.300
kHz
5
x10 k
48.500
kHz
51.500
kHz
10
x10 k
97.000
kHz
103.000
kHz
(5) Press frequency multiplier x1k pushbutton and adjust FREQUENCY Hz dial
for a frequency counter indication of 1.000 kHz.
(6) Adjust FREQ VERN control fully ccw. Frequency counter will indicate 0.990
kHz or less.
(7) Adjust FREQ VERN control fully cw. Frequency counter will indicate 1.010
kHz or greater.
