Measurement Computing DaqBoard 1000 Series - Manual (Page 76)

6-2 Specifications – DaqBoard/1000 Series 889094 Note: Specifications subject to change without notice.
A/D Specifications Applicable to DaqBoard/1000, /1005
Type: Successive approximation, 200 kHz maximum conversion rate
Resolution: 16 bits
Conversion Time: 5 µs
Maximum Sample Rate: 200 kHz
Differential Nonlinearity: ±2 LSB maximum
Integral Nonlinearity: ±1 LSB maximum
Missing Codes: None, over full operating temperature range
Input Sequencer Applicable to DaqBoard/1000, /1005
Analog, digital and counter inputs can be scanned synchronously based either on 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
1. Internal, programmable from 5 µs to 5.96 hours maximum in 1 µs steps
2. External, TTL level input up to 200 kHz maximum
Programmable parameters per scan: channel (random order), gain
Depth: 512 location
On-board Channel to channel scan rate: 5 or 10 µs per channel, programmable
External Acquisition Scan Clock Input Applicable to DaqBoard/1000, /1005
Maximum rate: 200 kHz
Clock Signal Range: 0V to +5V
Minimum pulse width: 50 ns high, 50 ns low
Triggering Applicable to DaqBoard/1000, /1005
Trigger Sources:4, individually selectable for starting and stopping an acquisition. Stop acquisition
can occur on a different channel than start acquisition; stop acquisition can be triggered via modes 2,
3, or 4 described below. Pre-trigger is supported with fixed or variable pre-trigger periods.
1. Single-Channel Digital Trigger: A separate digital input is provided for digital triggering.
Latency: 5 µs max.
2. Digital Pattern Triggering: 8 or 16-bit pattern triggering on any digital input. Programmable for
trigger on equal, above, below, or within or outside of a window. Individual bits can be masked for
“don’t care” condition. Latency: One scan period maximum.
3. Counter/Totalizer Triggering: Counter/totalizer inputs can trigger an acquisition. User can select
to trigger on a frequency or on total counts that are equal, above, below, or within/outside of a
window. Latency: One scan period maximum.
4. Software Triggering: Trigger can be initiated under program control.