Measurement Computing PCI-DAS1602/12 - Manual (Page 22)

21
Chapter 5
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog input
Table 1. Analog input specifications
A/D converter type ADS7800
Resolution 12 bits
Number of channels 16 single ended / 8 differential, software selectable
Input ranges
(SW programmable)
Bipolar: ±10 V, ±5 V, ±2.5 V, ±1.25 V
Unipolar: 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
(SW programmable)
Internal counter
External source (A/D External Pacer)
Software polled
Burst mode Software selectable option, burst rate = 3 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 > 512. Compatible
with both digital and analog trigger options.
Data transfer From 1024 sample FIFO via REPINSW
Programmed I/O
A/D conversion time 3.0 µS max
Throughput 330 kS/s min
Calibration Auto-calibration, calibration factors for each range stored on board in non-volatile RAM.