TM 11-5820-890-30-4
3-13. ASSEMBLY AND INSTALLATION OF STANDARD TEST SETUP. Continued
ITEM
ACTION
REMARKS
c. Mounting adapter For AM-7239/VRC:
Remove cover and check position of
d. RT
e. Audio cable
f. Reference fixture
g. Reference fixture
shorting bar. See figure 3-5. If equipped
with one, it should connect TB2-1 to TB2-2.
Install cover and torque screws to 12 in-lb.
For AM-7239B/VRC:
Set LCL/RMT switch to LCL. See figure 3-5.
Remove protective cap from connector P1.
Set switch CB1 to OFF. Install mounting
adapter in mounting base. Tighten outer
thumbscrews.
Install holding battery. See figure 3-5.
Remove protective caps from connectors J6
and P1. Install in lower slot in the mounting
adapter. See figure 3-5. Tighten thumbscrews.
Connect to RT AUD/DATA connector and
mounting adapter DATA connector J5.
Insure all thumbscrews are tight. Perform
operational check in paragraph 3-18.
Normal presets are:
CHAN
MAN
1
2
3
4
5
6
CUE
FREQUENCY (MHz)
30.000
37.875
42.975
43.375
49.075
56.200
68.775
87.975
Also, load FH sync time (TOD),
TRANSEC, and hopset.
Preset switch settings:
CB1:
ON
MODE:
SC
RF:
LO
CHAN:
MAN
FCTN:
OFF
DATA:
OFF
VOL:
As required
DIM:
As required
NOTE:
When the reference fixture
is not going to be used for
long periods (overnight), set
FCTN switch to STW position
to extend holding battery life.
The presets will have to be
reloaded afterward.
3-21
