BNC 645 - Manual (Page 143)

143
FUNCtion:PULSe:HOLD? [WIDTh|DCYCle]
Query either the value of the pulse width or the duty cycle being held. The value
of duty cycle in percent or the value of pulse width in seconds is returned.
FUNCtion:PULSe:WIDTh {<seconds>|MINimum|MAXimum }
Specify the pulse width in seconds. The range is from 20 ns to 2000 seconds.
The default is 100μs.
z
The pulse width represents the time from the 50% threshold of the rising
edge of the pulse to the 50% threshold of the next falling edge.
z
The minimum value of the pulse width is 20 ns and the maximum value is
1999.99 seconds.
z
The minimum pulse width is restricted by the period as below:
Wmin=20 ns when period is not greater than 10s.
Wmin=200 ns when period is greater than 10 s, but not greater than 100s.
Wmin=2μs when period is greater than 100d, not greater than 1000s.
Wmin=20μs when period is greater than 1000s.
z
The specified pulse width must be less than the difference between the
period and the minimum pulse width.
Pulse Width ≤Period – Wmin
The waveform generator adjusts the edge time first, and then the width if
necessary to accommodate the period. From the remote interface, a “Setting
conflict” error is generated and the pulse width is adjusted.
z
The specified pulse width must be less than the difference between the
period and the edge time.
Pulse Width ≤Period – (1.6x Edge time)
The waveform generator adjusts the edge time first, and then the width if
necessary to accommodate the period. From the remote interface, a “Data out
of range” error is generated and the pulse width is adjusted.
z
The specified pulse width must be greater than the total time of one edge:
Pulse Width ≧ 1.6x Edge time