II. SPECIFICATIONS: MODEL 4007-137 RACK ADAPTER ASSEMBLY
RACK CONFIGURATION:
The rack adapter assembly is 19"W x 16 1/2"D x 7"H. It accommodates one Model 843
power supply module and seven Model 635 amplifier modules.
REAR PANEL CONNECTORS:
There are five types of termination on the rear of the rack, as follows:
TAPE OUTPUT:
One insulated BNC per amplifier channel. These are low power, buffered outputs for tape
recorders, oscilloscopes and other high impedance instrumentation.
MONITOR OUTPUT:
One 18-pin bulkhead connector per rack for the high- power output circuit of each
amplifier module. These outputs are used for driving low impedance loads with high shunt capacitance cables, ie: 50
ohms, .056uf.
DC OUTPUTS:
Seven 3-pin bulkhead connectors per rack connect to the output of the fixed DC channels.
BRIDGE/AMPLIFIER INPUT:
One 6-pin bulkhead connector per amplifier channel for interfacing the strain gages to
their respective amplifiers.
CAL:
One insulated BNC per rack, accepts external calibration signal.
AUTO-BAL:
One insulated BNC per rack accepts external auto-balance command.
REMOTE:
One insulated BNC per rack, through which a circuit closure, either switched or from a computer,
disconnects the normal inputs of each amplifier module and replaces it with the "EXT. CAL" signal.
LINE CORD RECEPTACLE:
Accepts 3-wire cord to plug into 115VAC, +,-10%,50/60Hz power line.
Summary of Contents for 635-002
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