TM 9-4935-481-14-1
Table 3-20. IR Transmitter Performance Test
Table 3-20. IR Transmitter Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
NOTE
the target source is clear of personnel before starting, unless
The major units and panels will be identified by the
window is hooded with mask.
initials as indicated below
CAUTION
DMS-D
Do not start the IR target source with
window cover in place. Overheating and
POWER panel
subsequent lamp failure may result. Before
PP
removing target source window cover,
DIGITAL MULTIMETER
ensure that the PS/M is deenergized.
DMM
Warning decals which are clearly visible
MONITOR/CONTROL panel
shall be affixed to the target source.
NOTE
COUNTER-TIMER
External power source referred to in this
procedure is Sorenson DCR 40-125A, or
CT
5
OSCILLOSCOPE (AN/USM-338)
equivalent.
Turn the external power source on and adjust it to
OSC
POWER SUPPLY/MODULATOR (IR XMTR)
approximately +24 Vdc.
6
PSM
MCP
BEACON TARGET SOURCE (IR XMTR)
Adjust the external power source CURRENT control to 50
7
amps.
BTS
BEACON TARGET ADAPTER
DMM LO switch to 5.
BTA
Prepare the DMS-D for testing per paragraph 2-6.
NOTE
1
If the power control card has been
MAIN POWER and DMS switches to ON.
replaced, perform the initial alignment as
2
per (1).
PP
Connect the cables as depicted in fig. 3-38.
3
CB1 switch to ON.
Uncover the lens of the target source and place the unit under a
8
4
PSM
hood or direct it away from personnel. (Insure sufficient air flow
BTS
is allowed around the for cooling of the lamp).
WARNING
Do not look at the operating IR target source when
closer than 50 meters unless wearing Jackson
produce series 70 safety goggles (or equivalent).
Serious eye burn may result. Ensure that a
52-meter radius from
3-325
