TB 9-6625-2071-24
(13) Disconnect function generator from TI.
(14) Connect signal generator RF OUTPUT to TI INPUT B using 50 Ω feedthrough
termination (omit termination for option H60).
(15) Set TI FREQ RESOLUTION, N switch to 10Hz, 105.
(16) Set signal generator for outputs listed in table 9. Slowly increase signal
generator amplitude until TI indicates as listed in table 9. If adjusted signal generator
amplitude exceeds limits specified, perform b (1) through (4) below (b (5) through (11)
below for AN/USM-459 and 5328AF096).
Table 9. Channel B Sensitivity.
Signal generator
Adjusted signal
output
Test instrument
generator output
Amplitude
indications
(mV)
(MHz)
(mV)
≤ 251
10
1.0
1.00000
≤ 251
30
1.0
3.00000
≤ 50
60
1.0
6.00000
≤ 50
90
1.0
9.00000
≤ 50
100
1.0
10.00000
<15 mV for AN/USM-459 and 5328AF096.
1
(17) Disconnect signal generator from TI.
b. Adjustments
(1) Connect signal generator RF OUTPUT to TI INPUT B using 50 Ω feedthrough
termination (omit termination for option H60).
(2) Set signal generator for a 40 MHz, 25 mV output.
NOTE
Do not adjust sensitivity below 10 mV.
(4) Slowly decrease signal generator output and repeat (3) above.
(5) Connect TI CHANNEL B MARKER OUTPUT to oscilloscope Vertical 1 input
using a 50 Ω feedthrough termination.
(6) Set oscilloscope channel 1 for DC input coupling, 1MΩ input, 500mV/div
amplitude and 10 μs/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 B using
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 A12R28
(fig. 1) for a symmetrical square wave on oscilloscope.
(11) Adjust A12R54 (fig. 1) for a stable TI 0.00100 indication.
10
