Measurement Computing DaqBoard 1000 Series - Manual (Page 82)

7-4 Specifications – DaqBoard/2000 Series 889094 Note: Specifications subject to change without notice.
4. Digital Pattern Triggering: 8 or 16-bit pattern triggering on any of the digital input ports.
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
5. 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
6. Software Triggering: Trigger can be initiated under program control.
Analog Output Applicable to DaqBoard/2000, /2001, /2003, /2004
The analog output channels are updated synchronously relative to scanned inputs, and clocked from
either an internal onboard clock, or an external clock source. Analog outputs can also be updated
asynchronously, independent of any other scanning in the system. Bus mastering DMA provides
CPU and system-independent data transfers, ensuring accurate outputs that are irrespective of other
system activities. Streaming from disk or memory is supported, allowing continuous, nearly-infinite
length, waveform outputs (limited only by available PC system resources).
Channels: DaqBoard/2000: 2 DAC channels (DAC0, DAC1)
DaqBoard/2001, /2003, /2004: 4 DAC channels each (DAC0, DAC1, DAC2, and DAC3)
Resolution: 16 bits
Output voltage range: ±10 V
Output current: ±10 mA
Offset error: ±0.0045 V maximum
Digital Feedthru: 50 mV when updated
Gain error: ±0.01%
Update rate: 100 kHz maximum, 1.5 Hz minimum (no minimum with external clock)
Settling Time: 10 µs maximum to 1 LSB for full-scale step
Clock Sources: 4
1. Onboard D/A clock, independent of scanning input clock
2. Onboard scanning input clock
3. External D/A input clock, independent of external scanning input clock
4. External scanning input clock
Digital I/O Applicable to DaqBoard/2000, /2001, /2002, /2004, /2005
Channels: 40, expandable to 208 with external DBK options
Input Scanning Modes: 2
1.
Asynchronous, under program control at any time relative to input scanning
2.
Synchronous with input scanning
Ports: 3 x 8-bit (82C55 emulation), and 1 x 16-bit. Each port is programmable as input or output.
Input Characteristics: 100 Ω series, 20 pF to common
Input protection: ±8 kV ESD clamp diodes parallel
I/O levels: TTL
Sampling/Update rate: 200 kHz maximum