TB 9-6625-2124-24
(32) Disconnect multimeter from A7TP4 and connect to A8TP9 (fig. 6). Adjust A8R18
(fig. 6) for multimeter indication of 0.000 V dc (R).
21. Swept Frequency and Marker Accuracy
a. Performance Check
(1) Connect equipment as shown in figure 4.
(2) Press function keys and enter corresponding data on keyboard as listed in as
listed in (a) through (j) below:
INSTR PRESET key.
(a)
START key, DATA ENTRY 10 MHz.
(b)
STOP key, DATA ENTRY 17.5 GHz.
(c)
M1 key, DATA ENTRY 1 GHz.
(d)
M2 key, DATA ENTRY 4 GHz.
(e)
M3 key, DATA ENTRY 8 GHz.
(f)
M4 key, DATA ENTRY 14 GHz.
(g)
M5 key, DATA ENTRY 17 GHz.
(h)
SWEEP TIME key, DATA ENTRY 25 ms.
(i)
POWER LEVEL key, DATA ENTRY 0 dBm.
(j)
(3) Press AMPTD MKR and RF BLANK keys to ON.
(4) Adjust oscilloscope controls as necessary to display the TI sweep output. Five
markers will be present on display.
NOTE
A break in oscilloscope trace will be present at each TI band
switch point (2.4, 7.1, and 13.5 GHz).
birdie (notch) appears on oscilloscope display.
(6) Adjust oscilloscope position control to display M1 (first) marker on crt,
increasing oscilloscope horizontal timing setting as necessary.
the leading edge of M1 marker on oscilloscope display. Synthesized signal generator will
indicate between 0.850 and 1.150 GHz.
NOTE
If an out-of-tolerance condition is noted in (7) above or (8)
through (40) below, perform b below.
(8) Repeat technique of (6) and (7) above for TI markers listed in table 6.
Synthesized signal generator will indicate as specified.