TB 9-6625-2071-35
(2) Set FUNCTION switch to FREQ C and FREQ RESOLUTION, N switch to
.1 kHz, 104.
(3) Set signal generator for a 100 MHz, 1 mV output. Slowly increase signal
generator amplitude until TI indication is stable at approximately 100 MHz. If signal
generator amplitude exceeds 15 mV, perform b below.
(4) Repeat (3) above at 5 and 512 MHz (30 and 500 MHz for AN/USM-459 and
5328AF096).
b. Adjustments
NOTE
For serial number prefix 2138A and greater containing A8
board number 05328-60045, perform only b (3) below.
(1) Set signal generator for a 100 MHz, 15 mV output. Adjust A8R82 (fig. 1) until
TI indication is stable at approximately 100 MHz. Slowly decrease signal generator
amplitude while adjusting A8R82 (fig. 1) until maximum sensitivity is obtained (R).
(2) Set signal generator for a 500 MHz, 15 mV output. Adjust A8R85 (fig. 1) until
TI indication is stable at approximately 500 MHz. Slowly decrease signal generator
amplitude while adjusting A8R85 (fig. 1) until maximum sensitivity is obtained (R).
(3) Set signal generator for a 100 MHz, 15 mV output. Adjust A8R12OFST (fig. 1)
until TI displays a stable indication at approximately 100 MHz. Slowly decrease signal
generator amplitude while adjusting A8R12OFST (fig. 1) until maximum sensitivity is
obtained (R).
a. Performance Check
(1) Position controls as listed in (a) through (e) below:
(a)
FUNCTION switch to DVM.
(b)
FREQ RESOLUTION, N switch to 1Hz, 106.
(c)
DCV RANGE switch to AUTO.
(d)
FILTER switch to OFF.
(e)
READ A and READ B pushbuttons out.
(2) Short TI HI and LO.
If TI display does not indicate between -0.0004 and
+0.0004 V, perform b (1) below.
(3) Disconnect short from TI HI and LO.
(4) Connect calibrator OUTPUT HI and LO to TI HI and LO.
(5) Set calibrator output to settings listed in table 6. If TI does not indicate within
limits specified, perform corresponding adjustment.
