1-26. TEST PROGRAM SETS (TPS) (cont)
(b) The azimuth gimbal alignment tool provides the capability of nulling
the resolver at O degrees, testing backlash between the bull gear and pinion gear,
checking the limit switches, and checking the limit stops of the PNVS azimuth drive
(c) The HOD and IVD optical alignment assembly aligns the IVD with the
It provides the electronics to display test patterns on the CRT screen
of the IVD and simulates the HOD being connected to the IVD. It enables the oper-
ator to control brightness, contrast, vertical spacing and position, and horizontal
spacing and position of the CRT.
(d) The terminal box assembly provides impedance termination to the con-
It allows sampling of FLIR video outputs to go to the TV monitor
of the AN/USM-410 test station.
(e) The insert/adapter assembly is the mounting fixture for the TADS night
sensor assembly and the nightside alignment tool assembly. It holds the UUT or
alignment tool in place by a gimbal clamp assembly.
The insert/adapter assembly is
serialized to a particular sensor mount assembly. The numbered guide pins on the
insert/adapter assembly match with the numbered holes on the sensor mount assembly.
(f) The PNVS interface structure insert provides mounting capabilities of
the PNVS night sensor assembly to the nightside test bench.
(g) The day/night sensor assembly adapter is part of the insert/adapter
It provides mounting capabilities of the UUT to the test bench.
(h) The channel balance adapter assembly enable the UUT to rotate on its
axis when mounted to the nightside test bench.
It allows the UUT to pan up and down
the target in the test bench so the target spans the channels of the UUT. A detent
thumbscrew is provided to select the amount of rotation necessary.
(i) The nightside alignment tool assembly is an optical alignment device
used to obtain data before testing the UUT.
It mounts to the insert/adapter assem-
bly and then to the nightside test bench.
Once mounted the operator looks through
it at the target in the test bench to obtain the X and Y coordinates of the target.
This data is saved to compare with the UUT measurements during testing.
(j) The illuminator fiber optic assembly is a fiber optic cable that con-
nects between a calibrated light source and the OSA. It illuminates the OSA cavity
to calibrate the photomultiplier tube prior to testing the IVD.
(k) The optical alignment - IVD reticle assembly measures the IVD CRT dis-
plays while testing.
Test patterns of known size and dimension are displayed on the
CRT, then the reticle is used to measure and verify these known dimensions.