TB 9-6625-2259-24
(42) Press FREQUENCY RANGE CW F1 key and wait 10 seconds for frequency
count to settle.
(43) Press FREQUENCY RANGE CW F2 key and wait 10 seconds for frequency
count to settle.
(44) Repeat (42) and (43) above two more times.
(45) Press FREQUENCY RANGE CW F1 key.
(46) Remove TI top cover.
(47) Adjust A8R12 (fig. 3) for a microwave frequency counter indication between
12,499 and 12,501 MHz (R).
(48) Replace TI top cover.
(49) Press LEVEL key and set LEVEL display to 0.0 dBm by pressing 0 with DATA
ENTRY key and then by pressing GHz/dBm/SEC DATA ENTRY key.
(50) Press FREQUENCY RANGE CW F2 key and wait 10 seconds for frequency
count to settle.
(51) Remove TI top cover.
(52) Adjust A8R6 (fig. 3) for a microwave frequency counter indication between
19.998 and 20.000 GHz (R).
(53) Replace TI top cover and wait 5 minutes before proceeding to (54) below.
(54) Repeat (42) through (53) above until both FREQUENCY RANGE F1 and F2
frequencies are within the specified limits.
(55) Remove TI top cover and replace CCA boards hold-down screw.
(56) Replace and secure TI top cover.
9. Harmonic Attenuation Test
a. Performance Test
(1) Press RESET key.
.
to spectrum analyzer INPUT 50
(2) Connect RF OUTPUT 50
(3) Press LEVEL key and set LEVEL display to +13.0 dBm by pressing 13 with
DATA ENTRY keys and then by pressing GHz/dBm/SEC DATA ENTRY key.