Pull Up/ Pull Down- Open Circuit Detection; Figure 1-9. Gain Selection - Brainboxes AD-1200 H User Manual

Reference
_____ _ ____________ GAIN Gain Selected
Gain 1
Gain 10
Gain 100
Gain 1000

Pull Up/ Pull Down- Open Circuit Detection.

______________________________________ _
Open circuit inputs can be detected by the installation of
resistors to pull the differential input lines to a known state
The two VOPT jumpers can pull the INPUT+ line, via a 100k
resistor R13, to isolated grounds or to the isolated +15volt
supply. To disconnect this pull up/down remove both jumpers.
Resistor R14 pull the INPUT- line to the isolated ground level in
the event of floating inputs. To disconnect this pull down
remove R14.
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Figure 1-9. Gain Selection.

Analog Relay Mux Board
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