TB 9-6625-2155-24
(19) Using TUNE KNOB, tune the test instrument from 2 to 12.2 GHz. Verify that
the difference between the minimum and maximum power indications are equal to or less
than 3 dB.
(20) Press TI RCL and 3 keys.
(21) Using TUNE KNOB, tune the test instrument from 12.300003 to 17.59999901 GHz.
Record minimum and maximum measuring receiver indications and frequencies where they
occur.
(22) Adjust A1A8R67 (fig. 6) to minimize difference between minimum and
maximum power indications (R).
(23) Press TI SWEEP MODE OFF, FREQUENCY, 2, and GHz keys.
(24) Adjust A1A2A2R29 (fig. 5) for a measuring receiver indication of -3.0 dBm.
(25) Press service switch A2A2S1 (fig. 4).
(26) Reduce TI RF output level to minimum.
(27) Replace TI top cover.
12. Pulse Modulation
a. Performance Check
(1) Disconnect cable from local oscillator RF OUTPUT connector.
(2) Connect equipment as shown in figure 7.
Figure 7. Pulse modulation hookup.
(3) Press TI keys as listed in (a) through (g) below.
RCL 0.
(a)
Adjust OUTPUT LEVEL for 3 dB.
(b)
ALC INTERNAL on.
(c)
RF OUTPUT on.
(d)