Functionality

The VMIVME-4140 Analogue Output Board provides 32 high quality analogue output channels with 12-bit resolution, capable of outputting or sinking 10 mA at ±10 V. The outputs all have a dedicated D/A converter (DAC).

The outputs each have a dedicated D/A converter (DAC).

The analogue outputs can be disconnected from the field wiring for off-line testing. Calibration and self-test are initiated by a VMEbus system reset or by executing a software command.

During calibration, offset and gain factor tables are compiled and stored in RAM. Each of the 32 channels configured over the six output voltage ranges has a corresponding offset and gain.

Self-Test: A self-test is run automatically after a system reset.

The self-test register indicates success or failure and can display the channel that failed.

Front Panel Status LEDs: The LEDs illuminate after a system reset. After a successful self-test and auto-calibration, the LED is off. The LED can also be turned on or off under software control.

Functions

– 32 analogue output channels

– Maximum output current per channel is 10mA.

– One 12-bit D/A converter (DAC) per output channel

– 0.8Ω output impedance

– Random update (non-scanning)

– Software or external synchronised update of double buffered outputs

– Single reference potentiometer – no additional manual calibration required

– Auto-calibration initiated by reset or software command

– Unipolar (0 to +10V, 0 to +5V, 0 to +2.5V) or bipolar (±2.5. ±5 and ±10V) software selectable

– Discrete or bulk terminated cables

– Self-testing

– Extensive on-board diagnostic test capabilities

– Outputs can be disconnected from the field for off-line operation

– PMC expansion slots

– Self-test

– Front panel status LEDs

– Front panel analogue output connector

– Front panel reference voltage access

– Applications

– Data acquisition systems

– Control systems

– Precision analogue stimulus

– Automatic Test Equipment (ATE)

Front Panel Reference Voltage Access: Isolated BNC connectors on the front panel allow access to the internal reference voltage. The front panel allows the reference voltage to be adjusted accordingly.