GE VMIVME-4105 8-Channel 12 Bit Multiplicative Digital to Analog Converter Board

GE VMIVME-4105 8-Channel 12 Bit Multiplicative Digital to Analog Converter Board

Product Overview

VMIVME-4105 is an 8-channel 12 bit multiplication analog-to-digital converter board that uses a dual European card (6U) format and comes with a front panel fault LED indicator. It is compatible with the VMEbus specification and needs to be paired with VMIVME-31xx to implement built-in testing functions. It is suitable for scenarios that require multi-channel analog output.

Core Features

Channels and outputs: 8 multiplication analog output channels, the output can be selected to P2 or the front panel (P3 connector) through jumper wires, supporting output ranges of ± 10 V or 0 to -10 V, selected through jumper wires.

Resolution and multiplier: 12 bit resolution, supports 2-quadrant or 4-quadrant multipliers, can be selected through jumper wires.

Reference voltage: Supports 8 independent or 1 shared AC or DC voltage references, which can be selected through jumper wires. There is an internal DC reference to support built-in testing.

Test mode: compatible with other VMIC boards and VMIC AMXbus ™ The backplane is used for fault detection and isolation, with two dedicated analog buses. During testing, 8 DAC outputs can be isolated from the P3 connector to avoid affecting user device connections. However, real-time fault detection and isolation are not supported when using the multiplication DAC option, and built-in testing is not supported when using the P2 output.

Simulation test mode: Any 8-channel analog output can be switched to the simulation test bus (Test Bus 1 or Test Bus 2), which is used to verify the multiplexer expansion board and each DAC channel of the VMIVME-4105 board through the ADC board.

Functional characteristics

Simulated output equation

Unipolar operation (two quadrant multiplier): V OUT=- V REF 4096 (DigitalCode 10)

Offset binary bipolar operation (four quadrant multiplier):

V OUT=−V REF+V REF 4,096(DigitalCode 10)×2

Board address: Select through a 12 bit DIP switch, decode VMEbus address lines A04 to A15 for board selection.

VMEbus access: decode address modification bits to support non privileged short I/O or monitoring short I/O access, selected through a single jumper.

Data transmission: During write operations, the data destination is controlled by data bit 15. When bit 15 is 1, it is written to the control register, and when it is 0, it is written to the addressed digital to analog converter (DAC); Read any valid board address to read the board status. The digital data of the DAC is contained in data bits D00 to D11. Unipolar operation uses unipolar binary code, and bipolar operation can use offset binary or complement code.

Mode selection: By writing control registers to select the operating mode of the board, the control registers use data bits D08 to D14, each with different functions. For example, D08 enables DAC output to P3 connector, D09 selects internal or external reference, etc.

System reset: Initialize the board through the system reset signal of VMEbus, disconnect all analog outputs from the output connector (P3), and disconnect the analog test output from the P2 connector.

Front panel fault LED: When an error condition is detected, the front panel fault LED can be illuminated under software control to provide visual fault indication. It will light up when powered on and cleared, and turn off after successful diagnosis.

DAC reference: 8 DAC channels can share high-precision, low drift references, or choose user provided references. Independent references for each channel can be obtained through P2 connectors.

Ordering Options

A=0 (option reserved for future use)

B is the channel/built-in test option: 1 is a 4-channel 12 bit multiplication analog output without built-in testing; 2 is an 8-channel 12 bit multiplication analog output without built-in testing; 3 is an 8-channel 12 bit multiplication analog output with built-in testing.

C=0 (option reserved for future use)

Connector data

Compatible cable connector: Panduit No.120-332-435E

Strain relief: Panduit No.100-000-042

Printed circuit board plug connector: Panduit No.120-332-033A

Electrical characteristics

Data transmission: A16/D16

Analog output (voltage output when load resistance=2k Ω, reference voltage=+10V)

Single pole: 0 to -10V

Bipolar: -10 to+10V, 5mA

DAC input code: unipolar binary code for unipolar, offset binary or complement code for bipolar

Resolution: 12 bits

Accuracy at 25 ° C: Gain error adjusted to ± 1/2 LSB, offset ± 0.5mV, relative accuracy ± 1 LSB

Gain temperature coefficient: ± 10 PPM/° C

External DAC reference input: maximum ± 10VDC input, maximum ± 10V peak to peak AC input

Output accuracy and frequency (AC reference input sine wave): 1% of full scale below 10kHz

Reference output: Voltage output 0V (± 0.5mV), temperature coefficient 5 PPM/° C, long-term stability 25 PPM/1000 hours, available current for external use 10mA

Establishment time: Maximum 6 µ s to ± 1/2 LSB

Monotonicity: monotonicity throughout the entire temperature range

Output isolation resistance: The maximum output switch resistance is 100 Ω, and the on-site isolation switch is optional

Physical/Environmental Characteristics