TB 9-6625-2021-24
(15) Increment signal generator frequency from 250 to 500 MHz. If TI does not
display a stable indication at each frequency increment, perform b below.
(16) Set signal generator frequency to 500 MHz and level output to -35 dBm. TI will
display a stable indication of applied frequency.
(17) Increment signal generator frequency from 500 MHz to 10 GHz. If TI does not
display a stable indication at each frequency increment, perform b below.
(18) Set signal generator frequency to 10 GHz and level output to -25 dBm. TI will
display a stable indication of applied frequency.
(19) Increment signal generator frequency from 10 GHz to 18 GHz. If TI does not
display a stable indication at each frequency increment, perform b below.
b. Adjustments
(1) Connect signal generator output to TI INPUT 50 .
(2) Set signal generator frequency to 100 MHz and level output to -25 dBm.
(3) Adjust A17A1R22 (fig. 1) fully ccw.
(4) Adjust A17A1R11 (fig. 1) for a stable indication on TI.
(5) Decrease signal generator level output and adjust A17A1R11 (fig. 1) until
maximum sensitivity is obtained (R).
(6) Increase signal generator level output for a stable indication. Record signal
generator level output indication.
(7) Adjust A17A1R22 (fig. 1) fully cw. TI will display all zeros.
(8) Increase signal generator level output by 1 dB from level recorded in (6) above
and adjust A17A1R22 (fig. 1) ccw until TI display indicates 100 MHz (R).
(9) Verify that sensitivity is at least -32 dBm.
12. Power Supply
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check. Connect multimeter between test points listed in table 4 and
chassis ground.
If multimeter does not indicate within limits specified, perform
corresponding adjustments in table 4.