Measurement Computing WaveBook rev.4.0 - Manual (Page 11)

WaveBook User’s Manual 05-22-01 An Introduction to WaveBook 2-1
An Introduction to WaveBook and Optional WBKs 2
What are WaveBooks? …… 2-1
How do the different WaveBook models compare with each other?…… 2-2
What are WBKs?…… 2-3
How do WaveBooks and WBKs interrelate? …… 2-5
How are WaveBook systems powered?…… 2-6
WaveBook Specifications …… 2-7
What are WaveBooks?
WaveBooks are high-speed portable data acquisition devices that can be used in a variety of applications,
such as testing engine strain, multi-channel acoustics, mechanical integrity, and vibration/shock/strain.
WaveBook features include:
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Power Options: Power can be supplied from an AC-to-DC adapter, battery, DBK30A rechargeable
battery module, DBK34 or DBK34A uninterruptible power supply modules.
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Easy Connection to Notebook or Desktop PCs.
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Analog Input Channels: BNC connectors keep input signals isolated from the chassis and commons.
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High-Speed Digital Inputs: 8 high-speed digital inputs (16 for WaveBook/516).
•
Digital Signal Processing (DSP): Allows you to define a channel scan-sequence and associated gains
across all channels. Also provides for real-time digital calibration on a per-sample basis.
•
Programmable Scan Sequencing: A 128-location scan sequencer allows you to program the analog
channel scan sequence, the associated unipolar/bipolar A/D range, and the input amplifier gain.
WaveBook performs 1 MHz scanning and gain switching over both its built-in and expansion channels.
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Single, or Multi-Channel Triggering
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Pre- and Post-Trigger Readings
In addition to the features just listed, the following apply to WaveBook/516:
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Digital-Pattern Trigger: Trigger occurs when a Digital I/O pattern is equal too, not-equal too, greater
than, or less than a user-defined 16-bit digital pattern. This is useful when trying to capture noise,
vibrations or some other physical disturbance that occurs at a particular point in a digitally-sequenced
process, such as a relay-logic-control system. Trigger latency of the digital pattern trigger is less than
200 ns for post-trigger acquisitions.
•
Pulse Trigger: Enables triggering and the correlation of lower-speed waveforms with the occurrence of
a user-defined, high-speed pulse.
•
20 kHz Low Pass Filter: Each of the eight channels has its own low pass, anti-alias filter.
•
External Clock Input: The external clock is useful when data collection depends on rotational speed
or axial position. Note that the external clock’s input can be reset to a slower rate.