Transmitter Frequency

TB 9-4920-358-35

(3) Measure pulse power output of TI. If measured output power is not between -5

and -7 dBm, perform b below.

b. Adjustments. Adjust A1R2 (fig. 2) until power meter indicates -6 dBm. Reinstall

RF module cover (R).

12. Transmitter Frequency

a. Performance Check

NOTE

RF module cover must be in place for the following checks.

(1) Connect equipment as shown in figure 3.

Figure 3. Transmitter frequency/pulse equipment setup.

(2) Set TI switches as listed in (a) through (d) below:

(a)

MODE switch to 2.

(b)

REFERENCE CODE switches to 7700.

(c)

FUNCTION switch to SYSTEM.

(d)

SYSTEM TYPE switch to SINGLE CHANNEL.

(3) Initialize radar test set by selecting FUNCTION and ENTER. Set radar test

set INTERROGATOR menus as listed below:

(a) Menu 3 - M2 to 7700, RANGE DELAY to 0 µs, SIF2 to OFF.

(b) Menu 4 - SIF CODE to 7700, DELAY to 3 µs, TRIG SOURCE to

EXTERN+.

10 CHANGE 1