VXI VT1422A, User Manual

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58 Programming the VT1422A & VT1529A/B for Remote Strain Measurement Chapter 3
Instrument Setup for Remote Strain Measurements
This section involves:
•
Preparing the VT1422A for installation into a VXIbus Mainframe
•
Preparing the VT1529A/B for use
•
Connecting the VT1422A to VT1529A/B Remote Strain Completion
units.
•
Connecting Excitation power supplies to the VT1529A/B
•
Connecting strain bridges to the VT1529A/B
Preparing the
VT1422A for
Installation
The VT1422A requires VT1539A SCPs to control Remote Signal
Conditioning Units like the VT1529A/B Remote Strain Conditioning Unit.
Chapter 1 “Getting Started” covers everything which is needs to be done
before installing the VT1422A in its mainframe. This includes switch settings
and SCP installation. After performing the operations in Chapter 1, return
here for Remote Strain specific operations.
Overview
Before getting into the specifics of configuring a Remote Strain Measuring
System, it might be helpful to see the overall set up. Figure 3-1 shows the
components and connections of a remote strain measuring system. The
circled letters identify connections that will be referenced in later sections.
Figure 3-1. Components of the Remote Strain Measuring System
Each VT1422A with VT1539A SCPs
and VT1529A/B Remote Strain Units
can support up to 512 strain gages
VT1539A
SCP (Up to 8)
VT1529A/B
VT1529A/B
VT1422A Multifunction
DAC Module shown with
an Option 001 RJ-45
Connector Module
Up to 4 excitation supplies
B
C A
Up to 32 strain
gages
Up to four excitation supplies
Up
to
1
6
V
T
15
29
A/Bs
Up to 32 strain
gages
A