Chapter 5 Specifications; Analog Input - Measurement Computing PCI-DAS6402/16 User Manual

Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Analog input

A/D converter type
Resolution
Number of channels
Input ranges (SW
programmable)
Polarity
A/D pacing (SW
programmable)
Burst mode
A/D gate sources
A/D gating modes
A/D trigger sources
A/D triggering modes
Data transfer
Configuration memory
Channel/gain queue
A/D conversion time
Calibration
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Table 1. Analog input specifications
AD976A, successive approximation ADC
16 bits
64 single ended; 32 differential
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
Unipolar/Bipolar, software selectable
Internal counter – ASIC
External source (A/D external pacer)
Software polled
Software selectable option, burst rate = 5 µS. Valid for a fixed input range only.
External digital (A/D Pacer Gate)
External analog (Analog Trigger In)
External digital: Programmable, active high or active low, level, or edge
External analog: Software-configurable for:
! Above or below reference
! Positive or negative hysteresis
! In or out of window
Trigger levels set by D/A OUT 0 and/or D/A OUT 1.
External digital (A/D start trigger in and A/D stop trigger in)
External analog (analog trigger in)
External digital: Software-configurable for rising or falling edge.
External analog: Software-configurable for positive or negative slope.
Trigger levels set by D/A OUT 0 and/or D/A OUT 1.
Pre-/post-trigger: Unlimited number of pre-trigger samples, 16 Meg post-trigger samples.
Compatible with both digital and analog trigger options.
From 8k RAM buffer via DMA (demand or non-demand mode) using scatter gather.
Programmed I/O
8K words
Up to 8K elements. Programmable channel, gain, and offset.
5 µS
Auto-calibration, calibration factors for each range stored on board in non-volatile RAM.
5-1
Chapter 5