Omega OMB-DAQ-54 User Manual page 27

At a measurement duration of 610 milliseconds, the last two bits are considered unreliable, resulting in a
resolution of 22 bits. At a very fast measurement duration (12.5 milliseconds), the nine most least
significant bits are unreliable, resulting in 15 bit accuracy.
Speed Designation
Very Slow, 50 / 60 Hz rejection
Slow, 50 Hz rejection
Slow, 60 Hz rejection
Medium, 50 Hz rejection
Medium, 60 Hz rejection
Medium
Fast
Very Fast
Notes: 1. Each channel can have independent measurement duration and resolution.
2. The sample rates and resolutions shown were obtained with a 10-channel scan and with
3. Duration does not include the use of CJC measurements.
Note: When measuring variable input signals (as opposed to relatively steady input signals), the variable
signals will require more samples/sec to obtain a realistic signal representation. Available sample
rates range from 1.6 samples per second up to 80 samples per second as indicated in the preceding
table.
2-6 General Information & Specifications
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Speed vs. Resolution
Measurement
Duration
(per channel)
610 ms
370 ms
310 ms
130 ms
110 ms
40 ms
20 ms
12.5 ms
continuous self-calibration disabled.
1
Maximum
2
Sample Rate
(Samples/sec) (-4 V to +4 V range)
1.6 / sec
2.7 / sec
3.2 / sec
7.7 / sec
9.2 / sec
25 / sec
48 / sec
80 / sec
878595
2
Resolution
(Bits RMS)
22
22
22
21
21
19
17
15
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