12.4.8
Configuring and using the bridge amplifier
This section describes the procedures required when configuring and using the
bridge amplifier for both the hardware as well as the software (Perception).
In the Perception software, a simplified block diagram is used as reference and
complementary control.
Figure 12.39:
Perception Bridge Amplifier simplified block diagram
A
Channel select
B
Start bridge wizard
C
Legend
D
Bridge representation (click to toggle bridge completion)
E
Sense on/off (S1a and S1b in Figure 12.31 on page 250)
F
Show connector pinning on/off
G
Excitation type
H
Excitation value
I
Excitation on/off (S2a and S2b in Figure 12.31 on page 250)
Bridge completion
The Wheatstone bridge used in most strain gauge measurement circuits usually
consists of (a) the gages for actively measuring the strains and (b) precision
resistors for completing the circuit. In GN410 and GN411, bridge completion
can be for full
-
bridge, half
-
bridge and quarter
-
bridge configurations. Completion
resistors can be internal (incorporated in the GN410 and GN411) or external
(when required).
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