Measurement Computing PCI-DAS1602/16 - Manual (Page 21)

20
Chapter 5
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
All specifications are subject to change without notice.
Analog input
Table 1. Analog input specifications
A/D converter type AD976ABN
Resolution 16 bits
Number of channels 16 single-ended / 8 differential, software selectable
Input ranges, software
selectable ±10 V, ±5 V, ±2.5 V, ±1.25 V
0 to 10 V, 0 to 5 V, 0 to 2.5 V, 0 to 1.25 V
Polarity Unipolar/bipolar, software selectable
A/D pacing
(software programmable) Internal counter - 82C54.
External source (A/D EXTERNAL PACER)
Software polled
Burst mode Software selectable option, rate = 5 µs
A/D trigger sources External digital (A/D EXTERNAL TRIGGER)
External analog (ANALOG TRIGGER IN)
A/D triggering modes External digital: Software configurable for:
 Edge (triggered)
 Level-activated (gated)
 Programmable polarity (rising/falling edge trigger, high/low gate)
External analog: software-configurable for:
 Positive or negative slope.
 Above or below reference
 Positive or negative hysteresis
 In or out of window
Trigger levels set by DAC0 and/or DAC1, 4.88 mV resolution.
Unlimited pre- and post-trigger samples. Total # of samples must be > 256. Compatible
with both Digital and Analog trigger options.
Data transfer From 512 sample FIFO via interrupt w/ REPINSW
Interrupt
Software polled
A/D conversion time 5 µs max
Throughput 200 kHz
Calibration Auto-calibration, calibration factors for each range stored on board in non-volatile RAM.
Common mode range ±10 V min
CMRR @ 60 Hz -70 dB
Input leakage current ±200 nA max
Input impedance 10 MΩ min
Absolute maximum input
voltage ±15 V