In this situation, a sensor is used with only one resistor, R4. This resistor is
placed between A and C.
Three additional resistors must be provided: R1, R2 and R3 to complete the
bridge. You do this by using the half-bridge completion as described in the
previous section and then adding the additional R3 resistor between C and D.
There are two ways of doing this:
1 Use the standard 350
Ω resistor inside the acquisition card.
2 Provide a resistor.
Nothing needs to be done to the hardware for the first situation.
For the second situation, a resistor needs to be added to the plug-in module in
the location marked QB. Please refer to Figure 12.31 on page 250 for electrical/
schematic details and to Figure 12.32 on page 252 for mechanical/location
details.
Additional wiring needs to be added for the quarter-bridge completion resistor.
Depending on the selection made, connect either Pin 10 (350 Ohm) or Pin 9
(user) to the bridge connection marked C in the diagram, or directly to Pin 6
(-amp in) of the connector. Please refer to Figure 12.34 for connection details.
Inform the Perception software when a quarter bridge is used.
To select quarter-bridge completion in Perception
To select half-bridge completion in Perception, proceed as follows:
1 In Perception, go to the Settings sheet.
2 In the task pane, select the Bridge in the Input section.
3 Select one or more channels.
GEN3i
262 I3763-3.1 en HBM: public
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