Input Sequencer - Omega OMB-DAQBOARD-3000 Series User Manual

Maximum Usable Input Voltage
Ranges
0.5, 1, 2, 5, 10V
0.1, 0.2V
A/D Specifications
Type: Successive approximation
Resolution: 16 bit
Maximum Sample Rate: 1 MHz
Nonlinearity (Integral): ±2 LSB maximum
Nonlinearity (Differential): ±1 LSB maximum

Input Sequencer

Analog, digital and counter inputs can be scanned synchronously based on either an internal programmable
timer, or an external clock source. Analog and digital outputs can be synchronized to either of these clocks.
Scan Clock Sources: 2
Note: The maximum scan clock rate is the inverse of the minimum scan period. The minimum scan period
is equal to 1µs times the number of analog channels. If a scan contains only digital channels then
the minimum scan period is 83 ns times the number of digital channels.
Internal, programmable
1.
Analog Channels from 1 µs to 19 hours in 20.83 ns steps
Digital Channels and Counters from 83.33 ns to 19 hours in 20.83 ns steps
External, TTL level input
2.
Analog Channels down to 1 µs minimum
Digital Channels and Counters down to 83.33 ns minimum
Programmable Parameters per Scan: Channel (random order), gain
Depth: 512 location
On-board Channel-to-Channel Scan Rate:
Analog: 1 MHz maximum
Digital: 12 MHz if no analog channels are enabled, 1 MHz with analog channels enabled
Voltage
Range*
-10V to
-5V to
-2V to
-1V to
-500 mV to
-200 mV to
-100 mV to
* Specifications assume differential input single-channel scan, 1-MHz scan rate, unfiltered,
CMV=0.0V, 30 minute warm-up, exclusive of noise.
** Noise reflects 10,000 samples at 1-MHz, typical, differential short, CA-G56
7-2 Specifications
+ Common Mode Voltage
Maximum
(CMV + V )
in
10.5V
2.1V
Accuracy
±(% Reading + % Range)
23ºC ± 10°C, 1 year
10V 0.031% + 0.008%
5V 0.031% + 0.009%
2V 0.031% + 0.010%
1V 0.031% + 0.012%
500 mV 0.031% + 0.018%
200 mV 0.036% + 0.012%
100 mV 0.042% + 0.018%
988093
Temperature Coefficient
± (ppm of Reading + ppm Range)/ºC
0ºC to 13°C and 33ºC to 60ºC
14 + 8
14 + 9
14 + 10
14 + 12
14 + 18
14 + 12
14 + 18
Note: Specifications are subject to change without notice.
Noise**
(cts RMS)
1.5
2.0
1.6
2.5
4.0
5.0
9.0