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Note
Using the Multiplexers in a VXIbus System
Identifying the
Terminal Module
Relay Multiplexers
Note
14
Getting Started with the Strain Gage Multiplexers
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•
Full Bridge Measurements
- 8 Channels
- Bending Full Bridge
- Bending Poisson Full Bridge
- Poisson Full Bridge
•
Guarded DCV Voltage and 2-wire Resistance Measurements
- 8 Channels
- Allowed with strain measurements on adjacent channels
•
Diagnostics
- Leadwire Resistance (channels 0 and 1)
- Internal Half Bridge Voltage
- Shunt Verification (E1355A and E1356A only)
- Guard Voltage
- Bridge Excitation Voltage
Strain measurement examples are found in Chapter 3. The diagnostics are
covered in Appendix C.
The electrical characteristics and strain measurement circuitry used by the
strain gage multiplexers are covered in Chapter 4.
This section prepares the strain gage multiplexers for use in a VXIbus
system.
The card ID jumpers and card ID switch (Figure 1-1) indicates which
terminal assembly is used. Since the HP E1345-66201 and HP
E1351-66201 assemblies are used with a variety of terminal modules, the
ID jumpers or ID switch may need to be changed. To reduce setup time and
avoid configuration errors, check the jumper or switch setting to make sure
they match the terminal module used.
When the relay strain gage multiplexers are shipped from the factory, the card
ID jumpers are set according to the terminal module (E1355A/E1356A)
shipped with them (Figure 1-1). The system is able to identify the multiplexer
with or without the terminal module attached.
If the jumper setting does not match the terminal module attached, the
system will identify the card based on the jumper setting.
Chapter 1
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