Section V
TM 11-6625-2781-14&P-2
ADJUSTMENT PROCEDURES (cont' )
d
5-31. APC Tuning Stabilizer Final Check (cont'd)
ANALYZER Control Settings (cont'd)
INPUT ATTENUATION................................ ................................ ................................ ................................ .... 10 dB
BASE LINE CLIPPER ................................ ................................ ................................ ................................ ..Max ccw
SCAN TIME PER DIVISION ................................ ................................ ................................ ... 10 MILLISECONDS L
LOG REF LEVEL ................................ ................................ ................................ ................................ ........ +10 dBm
LOG REF LEVEL Vernier................................ ................................ ................................ ................................ ........ 0
VIDEO FILTER ................................ ................................ ................................ ................................ .................. OFF
SCAN MODE ................................ ................................ ................................ ................................ ....................... INT
SCAN TRIGGER ................................ ................................ ................................ ................................ ............ AUTO
LOG/LINEAR ................................ ................................ ................................ ................................ ..................... LOG
A6 APC SEARCH ................................ ................................ ................................ ................................ ...... NORMAL
8406A:
COMB FREQUENCY (MC) ................................ ................................ ................................ ........................... 100 MC
INTERPOLATION AMPLITUDE................................ ................................ ................................ ......................... OFF
OUTPUT AMPLITUDE................................ ................................ ................................ ................................ .3 o'clock
2.
Connect the comb signal to the analyzer RF INPUT.
3.
Tune the FREQUENCY control to center the display. Keep FINE TUNE centered.
4.
Turn SCAN WIDTH PER DIVISION to 2 kHz. Use FINE TUNE to center the display.
5.
Turn TUNING STABILIZER to on. Observe the amount of signal shift. The display should shift no more than 5
divisions (10 kHz).
______________ 5 Div
6. Center the display with the FINE TUNE control.
7. Turn TUNING STABILIZER to OFF, and observe the amount of signal shift. The display should shift no more
than 5 divisions (10 kHz).
______________ 5 Div
5-24
