Measurement Computing DaqScan 2000 Series - Manual (Page 68)

Specifications are subject to change without notice.
11-2 Specifications 898095 DaqScan/2000 Series
Ranges: Software programmable via sequencer on a per-channel basis.
Accuracy (Note 2)
One Year, 0 to 35°C
±(% reading + % range)
Input Noise (Note 3)
(LSB rms)
10 Hz to 200 kHz
Voltage Range
(Note 1)
Absolute Typical
0 to +10 V 0.015 + 0.005 1
0 to +5 V 0.015 + 0.005 1
0 to +2.5 V 0.015 + 0.005 1
0 to +1.25 V 0.015 + 0.008 2
0 to +0.625 V 0.015 + 0.008 2
0 to +0.3125 V 0.015 + 0.008 2
-10 to +10 V 0.015 + 0.005 1
-5 to +5 V 0.015 + 0.005 1
-2.5 to +2.5 V 0.015 + 0.005 1
-1.25 to +1.25 V 0.015 + 0.005 2
-0.625 to +0.625 V 0.015 + 0.008 2
-0.3125 to +0.3125 V 0.015 + 0.008 3
-0.156 to +0.156 V 0.020 + 0.008 3
Notes:
1) Specifications assume differential input single channel scan, 200 kHz scan rate, unfiltered.
2) Accuracy specification is exclusive of noise. Measurements were taken at P1.
3) Inputs shorted to Signal Ground (SGND). 8192 samples.
Input Sequencer
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
•
Internal, programmable from 5
µs to 5.96 hours maximum in 1 µs steps
•
External, TTL level input up to 200 kHz maximum
Programmable Parameters per Scan: channel (random order), gain, unipolar or bipolar
Depth: 16,384 locations
On-board Channel-to-Channel Scan Rate: 5 or 10
µs per channel, programmable
Expansion Channel Scan Rate: 5 µs,10
µs, or 1000 µs per channel, programmable
External Acquisition Scan Clock Input
Maximum Rate: 200 kHz
Clock Signal Range: 0V to +5V
Minimum Pulse Width: 50 ns high, 50 ns low
External Sync Ports
Number of External Sync Ports: 2, on rear panel
Maximum Number of Units to be Synchronized: 4 units, scan-synchronous (post trigger)
Maximum Length of Sync Cables: 15 feet (4.57 m), total for all cables
Triggering
Trigger Sources: 6, 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, 4, 5, or 6 described
below. Pre-trigger is supported with fixed or variable pre-trigger periods.
1. Single-Channel Analog Hardware Trigger
Any analog input channel, including any of the analog expansion channels, can be software programmed as
the analog trigger channel.
Input Signal Range: -10V to +10V max
Trigger Level: Programmable, 11-bit resolution
Hysteresis: Programmable, 11-bit resolution
Latency: 5 µs max