Multiplexor

OVERVIEW

The TMG2000MS 16 Differential Multiplexer is an electronic switching device designed to be used in combination with any TMG2000MS A/D card. It will allow an input channel to be expanded to 16 independent channels. Up to four Model 16 Multiplexers can be used with one A/D. In conjunction with Model 66 Expansion Modules, up to 32 multiplexers can be handled by a single A/D card. The control output lines on the A/D determine which input is selected. Both the plus and minus connections are switched so that system flexibility and noise rejection are maximized. All inputs are protected against over voltages of up to 150 volts.

The Model 16 Differential Multiplexer is a self-contained unit which connects to the computer via 7 or 8 wires. Because 16 differential circuits, each with a ground, require 48 wires, having the multiplexer outside the computer substantially reduces wiring congestion and the attendant hazards. The standard Model 16 Differential Multiplexer accommodates input signal levels between plus 5.5 and minus 5.5 volts. The Model 16 can also be connected as a dual 16-channel single-ended multiplexer. environment.
SPECIFICATIONS

SIGNAL INPUTS: 16 channels Both plus and minus inputs are switched

SIGNAL INPUT RANGE: +/- 5.5 volts

SWITCHING TIME: 0.5 ms maximum

SWITCH RESISTANCE TYPICAL: On resistance 20 K ohms Off resistance 100 Megohms

INPUT PROTECTION: All inputs protected against over voltages of up to 130 volts transitory or 60 volts continuous

CONTROL INPUTS: Fully compatible with all Lawson Labs A/D cards

TYPICAL CONTROL INPUT CURRENT: 0.06 milliamps Active low