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The
100KHz bandwidth VT1529B unit provides all the circuitry needed for
bridge measurements, no additional signal conditioning is required.
This includes:
- bridge
completion
- bridge
excitation via external power supplies
- bridge
sensing
- bridge
excitation sensing
-
offset/shunt calibration etc.
Data
Acquisition is by VT1432A´s connected to the dynamic outputs (100 KHz
bandwidth) of the VT1529B to measure the bridge voltages. They are
triggered on one of their external trigger inputs.
The
additional external power supplies which are routed through the
VT1529B box to the strain gauges (bridges) providing ample power
(current) for very long sensor leads (100 meters +). Insufficient
power is a common shortcoming of many systems that rely on build-in
bridge excitation supply per channel.
Since the
VT1432A´s can be used in AC coupled mode this eliminates
the requirement for DC offset calibration and provide excellent
performance to the 1Hz cut-off frequency. At the higher end the
VT1432B option provides sampling frequencies to 102kHz on every
channel. Other cards are available to 200kS/s on every channel.
SmartOffice Throughput Wizard is used for
acquiring data and recording directly to disc. Further processing of
the
data is
done with SmartOffice, Shock Response analysis, and data can also be
exported in a variety of industry standard formats for use in other
packages including Matlab and MTS I-DEAS.
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