Thermo Scientific Micro-Tech 9101, Reference Manual

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A-44 Micro-Tech 9101/9201 Reference Manual, Rev J Thermo Fisher Scientific
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Resistive load: 800 ohms max.
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Capacitive load: No limit
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Field wiring: Connections are made to the terminal strip on end of
the Analog I/O Board. Note that connector is removable for ease of
termination.
Board Diagram
Part number = 102949
This is an optional board. Install in one of the motherboard expansion
slots J10–J13. For use with model 9101 only.
Each load-cell channel provides its own buffer amplifiers for driving the
A/D converter IC’s differential reference voltage from the excitation
sense voltage resistive divider. The load-cell signals are individually
filtered then connected directly to the differential signal input of the A/D
converter. Each load-cell also has an individual R-Cal relay and
individual R-Cal resistor.
“Channel 1,” top connector has jumpers J14 and J15 that allow selection
of either external excitation sense (6-wire LC hook-up) or internal
excitation sense (4-wire LC hook-up).
Dual-Plant
Load-Cell A/D
Board