Measurement Computing PCI-DAS6023 - Manual (Page 31)

31
Chapter 5
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog inputs
Table 1. Analog input specifications
A/D converter type Successive approximation type, min 200 kS/s conversion rate.
Resolution 12 bits, 1-in-4096
Number of channels 16 single ended / 8 differential. Software selectable
Input ranges ±10 V, ±5 V, ±500 mV, ±50 mV. Software selectable
A/D pacing
(SW programmable) Internal counter – ASIC. Software selectable time base:

Internal 40 MHz, 50 ppm stability
External source via AUXIN<5:0>. Software selectable.
External convert strobe: A/D CONVERT
Software paced
Burst mode Software selectable option, burst rate = 5 µS.
A/D gate sources External digital: A/D GATE
A/D gating modes External digital: Programmable, active high or active low, level or edge
A/D trigger sources External digital: A/D START TRIGGER
A/D STOP TRIGGER
A/D triggering modes External digital: Software-configurable for rising or falling edge.
Pre-/Post-trigger: Unlimited number of pre-trigger samples, 16 Meg post-trigger samples.
ADC pacer out Available at user connector: A/D PACER OUT
RAM buffer size 8 k samples
Data transfer DMA
Programmed I/O
DMA modes Demand or non-demand using scatter gather.
Configuration memory Up to 8 k elements. Programmable channel, gain, and offset
Streaming-to-disk rate 200 kS/s, system dependent
Accuracy
200 kS/s sampling rate, single channel operation and a 15-minute warm-up. Accuracies listed are for
measurements made following an internal calibration. They are valid for operational temperatures within ±1 °C
of internal calibration temperature, and ±10 °C of factory calibration temperature. Calculations for Absolute
Accuracy are based on the average of 100 measurements performed at the max input voltage for a given range,
measured after one year. Calibrator test source high side tied to channel 0 high, and low side tied to channel 0
low. Low-level ground is tied to channel 0 low at the user connector.
Table 2. Absolute accuracy specifications
Range Absolute Accuracy
±10 V ±2.0 LSB
±5 V ±2.0 LSB
±500 mV ±3.0 LSB
±50 mV ±4.0 LSB