TM 11-6625-3081-23
1-23. DAYSIDE TEST BENCH 2A1 (cont)
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(4) Radiometer Assembly 2A1A2A3.
The radiometer assembly detects laser radiation
from the UUT and transmits output signals to the programmable digitizer 2A2A1. The
programmable digitizer converts these signals to digital data for analysis by the
computer. The radiometer is used for making laser power tests, detecting missed
pulses, determining pulse width, and pulse-to-pulse energy stability.
(5) Dayside Sensor Mount Assembly 2A1A2A4.
The dayside sensor mount assembly
supports and positions the TADS day sensor assembly UUT, for testing. The UUT is
locked in place by use of the sensor mount handle, which contains two optical switch
assemblies that sense the lock and unlock positions.
The dayside sensor mount
assembly contains the following assemblies.
Laser interface assembly
Laser attenuator assembly
Laser safety shield assembly
(a) The laser interface assembly supports the laser spot tracker and the
laser range receiver UUTS for testing.
A handle on the left side is turned to move
the laser interface assembly right (carriage in) or left (carriage out). Two optical
switches sense the carriage in and carriage out positions, and transmit CARRIAGE
SENSOR 1 (in) and CARRIAGE SENSOR 2 (out) signals to multiprogrammer assembly 2A2A6.
(b) The laser attenuator assembly is located on the front of the laser
interface assembly.
It consists of an attenuator lens which is moved in and out of
the optical path by a lever (attenuator handle).
Two optical switches sense the
attenuator in and attenuator out positions, and transmit SHIELD SENSOR 1 (in) and
SHIELD SENSOR 2 (out) signals to multiprogramner assembly 2A2A6.
(c) The laser safety shield assembly is located between the laser interface
assembly and the shutter assembly.
It has a handle on the left side which is used to
move the shield to the right (closed) and to the left (open). Before the shield can
be opened, the laser interlock handle must be moved to the down position (unlocked).
After closing the shield, pull the laser interlock handle up to lock. This actuates
the interlock actuator switch (part of the laser interlock circuit) and mechanically
locks the UUT mounting adapter, located inside the laser cover.
Two optical switches
sense the shield open and shield closed positions, and transmit SHIELD SENSOR 1 (in)
and SHIELD SENSOR 2 (out) signals to multiprogramner assembly 2A2A6. The interlock
actuator switch completes the interlock circuit on the SWITCH and SWITCH RTN lines to
the laser cover assembly 2A1A2A19.
(6) Laser Fold Mirror Assembly 2A1A2A6.
(a) The laser fold mirror assembly consists of a two-position translator
with a single fold mirror.
The translator positions the mirror in the optical path to
direct laser energy from the laser transceiver UUT to the CID video camera. The
translator removes the mirror from the path to permit the inner module shutter
aperture to be used for laser spot tracker and optical device testing. The mirror is
“in” for laser transceiver unit tests and “out” for all other devices.
Two optical
switches sense the mirror in and mirror out positions.
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