GE VMIVME-4514A 16-Channel Scanning Analog I/O Board

GE VMIVME-4514A 16-Channel Scanning Analog I/O Board

DESCRIPTION

This product provides the user  with 16 analog outputs and 16 analog input channels. The  resolution of inputs and outputs is 12 bits. The analog  outputs are designed with an S&H output per channel. The  16 analog inputs are digitized by a 12-bit Analog-to-Digital  Converter (ADC) controlled by a scanner which scans and  stores data in a dual-port memory.

The VMIVME-4514A Analog I/O (AIO) Board  provides 16 high-quality analog output channels which can  be programmed with on-board jumpers to operate in a  variety of voltage ranges. Each output can source or sink  10 mA at ±10 V. For off-line testing, the analog outputs can  be disconnected from the I/O connector.

FEATURES

• Continually digitizes all input channels and stores the results in a dedicated  channel dual-port register (autoscanning mode) 

• Three A/D operating modes 

— Autoscanning mode (entered on power up) 

— Random polling mode 

— Scanning poll mode 

• P2 I/O connection 

• Built-in-Test on-board 

— Tests 100 percent of active components 

— Semiconductor output switches  

— Do not compromise accuracy (0.1 Ω output impedance) 

• 16 SE/Diff analog input channels 

— 12-bit A/D converter 

— Unipolar (0 to +10 V, 0 to +5 V) or bipolar (±2.5 V, ±5 V, ±10 V) 

— 40 kHz A/D throughput 

— Optional low pass filter 

— Overvoltage protected

— Fail-safe with power off 

• 16 S&H analog output channels 

— 12-bit D/A converter 

— Output short circuit protected 

— Unipolar (0 to +10 V, 0 to +5 V) or bipolar (±2.5, ±5 V, ±10 V) 

— Program-selectable scan rates provide improved response for complex  output functions 10 mA outputs 

• Power up board replacement

APPLICATIONS 

• Factory automation and instrumentation 

• Process control 

• Laboratory instrumentation 

• Machine monitoring 

• Data acquisition system 

• Simulation and training

FUNCTIONAL CHARACTERISTICS

Operating Modes:

Autoscanning Mode: The mode is executed by a  power up system reset, or program selection. All  channels are continuously scanned and the digitized  data is stored in sixteen 16-bit dual-port registers. No  other programming is required other than a read from  the dual-port register.

Random Polling Mode: This mode requires the  controlling program to generate a single conversion.  End-of-conversion is determined by polling an  end-of-conversion status bit.

Scanning Poll Mode:This is a scanning mode which  executes a single scan of all channels. An end-of-scan  control bit is polled to determine when the scan is  completed.

Board Address: The physical address for the board  may be selected by on-board jumpers. VMEbus  address lines A06 through A15 are decoded for board  selection.

ANALOG INPUTS

Input Type: Sixteen differential or 16 single-ended

A/D Conversion Time: 15 µs

Analog Input Acquisition Time: 10 µs

A/D Throughput: 40 kHz (maximum)

Monotonicity: Monotonic over full temperature range

Common-Mode Range: ±11 V (maximum)

Common-Mode Rejection: 82 dB

Channel Conversion Rate: 40 kHz ÷ number of  scanned channels