K-WANG
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
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