Block

Mask

Description

The National InstrumentsNI671x - NI673x cards feature analog outputs, digital I/O lines and counters. This block supports NI671x - NI673x PXI and PCI compatible cards. It monitors the 4 or 8 analog output channels depending on the card selected.

The OpNI671x AnalogOut block has two working modes: an Immediate Mode in which the analog output values are immediately updated when a new input voltage value is available and a Trigger Mode in which the analog output channels are updated only when a rising edge occurs on the triggering signal. The source the triggering signal can be one of the PFI pins of the68pin IO connector (see the Connector Pin Assignments section below), or the RTSI0 signal of the RTSI bus.

The NI671x-NI673x cards also support an external reference voltage (EXTREF) pin.

Parameters

Inputs

At each calculation step of the model, the block updates the NI671x analog output channels with the current values of its inputs pins. These input values must be specified in Volts.
When an external voltage is used to define the voltage range, the input values must be scaled to the external voltage reference value before being sent to the block. For this reason, it is recommended to connect the external voltage reference signal to an analog input channel so that the model knows its exact value and can use it for scaling the analog outputs.

Three sets of input values must be specified :

Outputs

This block has no outputs.

Characteristics and Limitations

Connector Pin Assignments

The following table gives the description of the signals related to the analog output channels and is followed by the connector pin assignments of the NI671x 68-pinI/O connector.

68-pin I/O Connector Pin Assignment