1-13. DESCRIPTION OF TEST CONSOLE TEST BENCH 2A2 (cont)
k. MATRIX SWITCH ASSEMBLY 2A2A1O
(1) The matrix switch assembly 2A2A1O consists of a model HP 9414A matrix switch,
four quadrant control CCAS (model HP 94140B), 64 relay switch CCAS (model
HP 94140A), and a pair of drawer slide assemblies.
Two dedicated cables, one dc power
cable (HP 09412-60003), and a control cable (HP 09412-60004) are supplied with the
These cables interface the matrix switch with the switch controller
A 23 cable connector distribution bus cable assembly interfaces the matrix
switch with test console test bench assemblies 2A2A4, 2A2A7, 2A2A11, and 2A2A14. A
shorting plug is installed between matrix ground terminal El and matrix number 16
A cabinet ground wire is installed on El.
The matrix switch consists of a mainframe, a motherboard assembly, an interface
extender assembly, a front section and a rear panel. The mainframe is divided into
Each quadrant contains a quadrant control CCA and 16 relay switch
CCAs that connect to the motherboard.
All of these CCAs are electrostatic discharge
Quandrant one and two is located on the upper side of the motherboard and
quadrant three and four on the lower side of the motherboard. The interface extender
assembly consists of two CCAs plugged into the four motherboard output connectors.
The interface extender CCA labeled TOP is electrically connected to quadrants one and
two and the other to quadrants three and four.
Each interface extender CCA contains
two fuses F1 and F2.
The front section, where the interface extender assembly is
located, interfaces the cabling between the matrix switch and the test adapter panel
The rear panel assembly contains the electrical connections required
for accepting the cabling from the test console test bench assemblies.
(2) The purpose of the matrix switch assembly is to operate under the control of
the switch controller 2A2A12 and provide for the proper switching and sequencing of
signals via the test adapter panel assembly to the UUT.
Length: 22 in
Height: 12 in
60 lb (includes the 68 CCAs)
+5 vdc and -12 vdc for logic
+12 vdc for relays
Operating Temperature: 32° thru 131°F
95% relative humidity at 32° thru 104°F (0° thru 40°C)