DESCRIPTION OF TEST CONSOLE TEST BENCH 2A2 (cont)
The test console test bench consists of an electrical equipment cabinet and the
Programmable digitizer 2A2A1
Matrix switch 2A2A1O
VHF cable entry panel 2A2A2
Multiprogrammer extender 2A2A11
Optical signal generator 2A2A3
Switch controller 2A2A12
Test adapter panel 2A2A4
Analog to digital converter 2A2A13
Cable entry panel 2A2A14
Electronics drawer 2A2A7
Electrical-optical calibration kit
ELECTRICAL EQUIPMENT CABINET
(1) The electrical equipment steel cabinet consists of a 30 inch high floor
standing rack bolted to a standard 68 inch high full size rack.
The cabinet is
centered on and bolted to a structured steel electrical equipment mounting base.
Located at the bottom of the full size rack is a blower assembly that forces air up
and around the electrical/electronic chassis assemblies and out through louvered open-
ings at the top of the cabinet.
(2) Assemblies 2A2A1, A3, A6, A7, A8, A1O thru A13 are individual slide mounted
Assemblies 2A2A2, A4, A5, A14, and A15 are hard mounted to equipment
All assemblies except 2A2A11 thru 2A2A15 are accessed from the
front of the test console test bench.
Two removable side panels are located on each
side of the test console test bench.
Before these panels can be removed, the dayside
and/or nightside test benches will have to be moved.
Cable assemblies, cable
carriers, cable mounting hardware, equipment rear panel controls and devices, and
ground leads are accessed by pulling open or removing the applicable electronic assem-
The electrical cables that mate with each slide mounted electronic assembly are
secured to spring retracting steel cable carriers.
As the assembly is pulled out, the
cable and carrier arm extend with the assembly.
A chain attached to the cable carrier
and the back panel of each electronic assembly, prevents putting tension on electrical
When the electronic assembly is removed, the cable carrier and
attaching electrical cable assemblies retract to the rear.
(3) Cable entry panel 2A2A14 provides power and signal distribution. Power
input, routed from the electronic station AC control panel assembly, is 115v, 60 Hz
Power distribution within the test console test bench is routed by two
plugmold cable assemblies.
Eight ground terminal bonding positions 2A2E1 thru 2A2E8
provide chassis and cabinet grounding against shock hazard.