Block

Mask

Description

The National Instruments 6711 and 6713 cards feature analog inputs, analog outputs, digital I/O lines and counters. This block is used to control one of the two counters to perform pulse width measurement(PWM)

This block supports PXI and PCI cards.

Parameters

Bus Type	Select the bus type (PCI or PXI) of the board in this list.
Card Type	Select the card model on this list.
Card index	Index of the card on the bus (for example, if only one card is present in the computer, enter "0" in the corresponding field).
Counter	Each NI671x board has two counters. Select the counter to be used (0 or 1)
Clock source	Sets the counting clock of the counter to either20MHz or 100kHz. Clock selection has a direct impact on the resolution
Timing Mode	Select the measurement type: either the frequency of the PWM or the length in seconds of the PWM pulse.
Gate	Selects the input for the counter.
Synchronize	see definition.

Inputs

This block has no inputs.

Outputs

PWM	Returns the measured pulse width, or the period, in seconds.

Characteristics and Limitations

Connections Requirements

Connect the input signal to be measured to the GATE pin of the selected counter.

Direct Feedthrough	No
Discrete sample time	No
XHP support	Yes
Work offline	No

RT-LAB Documentation

OpNI671x PWM In