Measurement-computing WBK Options Manuel d'utilisateur Page 25

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WBK14, Dynamic Signal Input Module
988396
WBK14, pg. 1
WBK14
Dynamic Signal Input Module
Description…… 1
Current Source …… 2
High-Pass Filter (HPF) …… 2
Programmable Gain Amplifier (PGA) …… 2
Programmable Low-Pass Filter Phase Equalizer …… 3
Programmable Low-Pass Anti-Aliasing Filter…… 2
Simultaneous Sample and Hold…… 3
Excitation Source …… 3
Calibration …… 3
Hardware Setup …… 4
Configuration…… 4
Power…… 4
Assembly…… 4
Software Setup …… 5
Using Accelerometers with WBK14 …… 6
Overview …… 6
Accelerometer Specification Parameters …… 6
Electrical Grounding…… 8
Cable Driving…… 8
WBK14 – Specifications …… 9
Description
The WBK14 is a dynamic analog signal input module for the WaveBook data acquisition system. The
WBK14 provides a complete system to interface to piezoelectric transducers that include accelerometers,
microphones, force/pressure transducers, and others.
Reference Note:
Information regarding accelerometers begins on page 6 of this document module.
Each WBK14 channel has a:
current source for transducer biasing
high-pass filter
programmable gain amplifier
anti-aliasing low-pass filter
simultaneous sample-and-hold (SSH) amplifiers
The gain, filter cut-off frequencies and current biasing levels are software programmable.
WBK14 includes a built-in programmable excitation source. This source stimulates dynamic systems for
transfer function measurements, and serves as a reference signal for calibration.
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