Product Description

The VMIVME-3122 is a member of VMIC’s extensive VMEbus analog I/O product line.

It features 16-bit digital resolution, program-controlled gain, selectable slew rates, and auto-scanning for 64 differential or single-ended channels,

Auto-scan for 64 differential or single-ended analog inputs.

The VMIVME-3122 has excellent dynamic range and analog input channel density. Multiple modes of operation are supported, including auto-scan, data burst, and external synchronization.

The board interfaces directly with VMIC’s family of signal conditioning boards to digitize the outputs of thermocouples, RTDs, and strain gages.

Individual channel gains can be downloaded for use during scanning operations, or the board can be configured for fixed gains. The boards can be configured for fixed gain common to all channels.

Multiple boards can be synchronized together, allowing up to 16 boards to start each scan simultaneously.

Interval timers, bus interrupters, channel counters, and mid-scan/end-of-scan flags simplify monitoring of data in the dual-port data buffer.

System applications that can benefit from the features of the VMIVME-3122 include factory automation, process control, data acquisition systems, training simulators, and laboratory instrumentation

The following overview of key features illustrates the flexibility and performance of the VMIVME-3122:

– 16. 32. or 64 differential or single-ended analog inputs

– 16-bit A/D conversion

– Selectable sweep rates from 381 Hz to 100 kHz (high performance option), 381 Hz to 50 kHz (standard performance option)

– Programmable gain of x1 or x10

– A/D converter ranges of ±2.5 V, ±5 V, ±10 V, 0 to +5 V, 0 to +10 V

– Programmable channel gain

– 16- to 1.024-word dual-port data buffer

– Operates in short I/O (A16), standard (A24), or extended (A32) data spaces

– Programmable channel block size and buffer size

– Optional low-pass input filter

– Continuous and burst operation modes

– Free-run or external/internal trigger

– Bus interrupter for mid-scan or end-scan indication

– Programmable interval timer for timing data bursts

– Direct wiring from VMIC signal conditioning boards

– Initialized after reset in Auto Scan mode, gain = x1