TB 9-6625-2071-35
(5) Repeat (2) above at 20 Hz, 1 kHz, 10 kHz, 100 kHz, and 1 MHz.
(6) Disconnect function generator from TI.
(7) Connect signal generator OUTPUT RF to TI INPUT A using 50 Ω feedthrough
termination (omit termination for option H60).
(8) Set TI FREQ RESOLUTION, N switch to 10Hz, 105.
(9) Set signal generator for a 10 MHz, 1 mV output. Slowly increase signal
generator amplitude until TI indication is stable at approximately 10 MHz. If signal
generator amplitude exceeds 25 mV (15 mV for AN/USM-459 and 5328AF096), perform b(1)
through (4) below (b (5) through (10) below for AN/USM-459 and 5328AF096).
(10) Repeat (9) above at 34 MHz.
(11) Repeat technique of (9) above at 50 and 100 MHz. If signal generator amplitude
exceeds 50 mV, perform b (1) through (4) below (b (5) through (10) below for AN/USM-459
and 5328AF096).
(12) Set TI CHANNEL A DC/AC switch to DC and repeat (9) through (11) above.
b. Adjustments
(1) Connect signal generator OUTPUT RF to TI INPUT A using 50 Ω feedthrough
termination (omit termination for option H60).
(2) Set signal generator for a 40 MHz, 25 mV output.
approximately 40 MHz (R).
NOTE
Do not adjust sensitivity below 10 mV.
(4) Slowly decrease signal generator output and repeat (3) above.
(5) Connect TI CHANNEL A MARKER OUTPUT to oscilloscope Vertical 1 input
using a 50 Ω feedthrough termination.
(6) Set oscilloscope channel 1 for DC input coupling, 1 MΩ input, 500mV/div
amplitude and 10 s/div sweep.
(7) Set oscilloscope triggering for positive slope, auto level, channel 1 source
and DC coupling.
(8) Connect function generator Function Outputs Unbalanced to TI INPUT A
using a 50 Ω feedthrough termination.
(9) Set function generator for a sine wave, 10 kHz, 42 mVp-p, 50 Ω output.
(10) Adjust oscilloscope controls as necessary to view waveform. Adjust A12R26
(11) Adjust A12R55 (fig. 1) for a stable TI indication of approximately 10 kHz (R).
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