1-13. DESCRIPTION OF TEST CONSOLE TEST BENCH 2A2 (cont)
SWITCH CONTROLLER ASSEMBLY 2A2A12
(1) The switch controller assembly 2A2A12 consists of a model HP 9411A switch
controller, two drawer slide assemblies (extension slides, rack mounting kit, slide
mounting kit), and a quick disconnect ground lead.
(a) Some of the important electronic components in the switch controller are
the main control CCA, self-test CCA, connector CCA, fan assembly, and dc power supply.
The main control CCA is modified with HP option 26.
The self-test CCA mounts on top
of the main control CCA and the connector CCA is at the rear of the main frame.
of these CCAS are electrostatic discharge sensitive.
(b) The front panel contains the power LINE ON switch and two LED indica-
tors, HP-IB addressed indicator (talk or listen) and the service requested indicator.
(c) The rear panel contains a fuse, address selector switch, HP-IB and
switch control connectors, and input and output power connectors.
(2) The purpose of the switch controller is to provide the control signals and
relay power for the matrix switch assembly 2A2A1O.
It also provides a switching self-
test function for the matrix switch assembly.
The switch controller is in direct
communication with the HP-IB CCA of the digital computer assembly 1A1O.
Weight: 27 lb
Electrical Input: 115 vac +11, -7 48 Hz thru 66 HZ
0° to 55°C (32° to 131°F)
95% relative humidity at 32° thru 104°F