Active pulse measurement of PulseWidth counter channel
When working with the session-based interface , the ActivePulse
property
displays the pulse width measurement in seconds of your counter channel,
with PulseWidth
measurement type.
Active pulse measurement values include:
'High'
'Low'
Create a session object, add a counter input channel, with the 'EdgeCount'
MeasurementType
.
s = daq.createSession('ni'); ch = addCounterInputChannel(s,'cDAQ1Mod5', 0,'PulseWidth')
ch = Data acquisition counter input pulse width channel 'ctr0' on device 'cDAQ1Mod5': ActivePulse: High Terminal: 'PFI4' Name: empty ID: 'ctr1' Device: [1x1 daq.ni.DeviceInfo] MeasurementType: 'PulseWidth
Change the ActiveEdge
property to Low
.
ch.ActivePulse = 'Low'
ch = Data acquisition counter input pulse width channel 'ctr0' on device 'cDAQ1Mod5': ActivePulse: Low Terminal: 'PFI4' Name: empty ID: 'ctr1' Device: [1x1 daq.ni.DeviceInfo] MeasurementType: 'PulseWidth'