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4
Chapter 4 Remote Interface Reference
Pulse Configuration Commands
FUNCtion:PULSe:WIDTh {<seconds>|MINimum|MAXimum}
FUNCtion:PULSe:WIDTh? [MINimum|MAXimum]
Set the pulse width in seconds. 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. You can vary the pulse width from 20 ns to
2000 seconds (see restrictions below). The default pulse width is 100 µs.
MIN = 20 ns. MAX = 1999.99 seconds. The :WIDT? query returns the
pulse width in seconds.
• The minimum pulse width (Wmin) is affected by the period.
Wmin = 20 ns for period < 10 s.
Wmin = 200 ns for period > 10 s, but < 100 s.
Wmin = 2 µs for period > 100 s, but < 1000 s.
Wmin = 20 µs for period > 1000 s.
• The specified pulse width must also be less than the difference
between the period and the minimum pulse width as shown below.
The function generator will adjust the pulse edge time and then the
pulse width as needed to accommodate the specified period. From the
remote interface, a "Settings conflict" error will be generated and the
pulse width will be adjusted as described.
Pulse Width < Period – Wmin
• The specified pulse width must be less than the difference between
the period and the edge time as shown below. The function generator
will limit the pulse edge time first, and then the pulse width as
needed to accommodate the specified period. From the remote
interface, a "Data out of range" error will be generated and the pulse
width will be limited as described.
Pulse Width < Period – (1.6 X Edge Time)
• The pulse width must also be greater than the total time of one edge
as shown below.
Pulse Width > 1.6 X Edge Time
Note: This function is affected by the FUNC:PULS:HOLD command,
which determines the value to be held constant as the period is adjusted:
the specified pulse width value, or the specified pulse duty cycle value.
See the FUNC:PULS:HOLD command for further information.
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