TB 9-6625-2296-24
(c) DATA ENTRY 5 ......................
RF Gen Setup
(d) DATA ENTRY 1 ......................
RF Gen Freq
(e) DATA ENTRY 1 2 1 . 1 M ......
121.1 MHz
(f) DATA ENTRY 2 ......................
RF Gen Level
(g) DATA ENTRY 0 ENTER .......
0 dBm
(h) Ret (F5) ....................................
Return
(4) Press MODE MTRS (Meter Menu), AUX (F6) (Auxiliary Functions Menu), and
DATA ENTRY 1 keys (calibrations).
(5) Press FIELD SELECT arrow keys until 13. Gen Modulation is highlighted,
and press DATA ENTRY ENTER key.
(6) Press DATA ENTRY 1 (AM Modulation (90%)) 1 8 0 and ENTER keys
(correction factor of 180).
(7) Adjust A9 AM MOD ADJ (fig. 2) on 90 MHz board assembly to set modulation
reading on measuring receiver to 90% 4.5%.
(8) Press ESC (F6) (Escape), MODE RF GEN (MODE RF GEN Display), DATA
ENTRY SHIFT, and Y keys (Backup Cal Data ? y/n).
(9) Press Source (F4) (Modulation Source), and DATA SCROLL arrow keys to
select SOURCE 1 MOD AM, and press DATA ENTRY ENTER key (selects AM
modulation).
(10) Press Mod (F5) (Modulation Mode), DATA ENTRY 9 0 and ENTER keys
(90% AM).
(11) Press A Freq (F1) (Audio Frequency Mode), DATA ENTRY 1 0 0 and ENTER
keys (100 Hz modulation frequency).
(12) Verify that the measuring receiver indicates 90% AM 4.5%.
(13) Press A Freq (F1) (Audio Frequency mode), ENTER keys (10 kHz modulation
frequency).
(14) Set measuring receiver low pass filter to 15 kHz and verify measuring receiver
indicates 90% AM 4.5%.
21. Generator Frequency Modulation
a. Performance Check
NOTE
All references to low pass filter settings of >20 kHz pertain to
measurement at 900 MHz only for the rest of this paragraph.
(1) Press key sequence listed in (a) through (f) below:
(a) MODE MTRS ..................................... Meters Menu