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The SQUare:PWIDth command will return error -200,"Execution
error" if range S1S2 (autoranging) is selected.
Example
& SQU:PWID 0.0012
& SQU:PWID?
$ +1.197910E-03
Calculation example
The pulse width can be stepped through 256 steps, with each step equivalent
to 1/(256 × frequency). The input value is always calculated to the duty cycle
first.
The duty cycle value calculated in the equation above will be used to calculate
the nearest duty cycle step available in the U3606B.
U3606B Programmer's Reference
( )
Pulse width s ( )
Duty cycle %
=
( )
0.0012 s ( )
Duty cycle %
=
(
Nearest step Duty cycle
(
Nearest step Duty cycle
*
All decimal parts are truncated, for example 184.32 is truncated to 184.
[SOURce:]SQUare[:LEVel][:IMMediate]:PWIDth
This command sets the square-wave output
pulse width to approximately 1.2 ms.
This query returns the square-wave output duty
cycle.
×
Frequency Hz
×
(
)
×
600 Hz
100 %
×
Duty cycle
256
⎛
------------------------------------------- -
⎝
100
)
--------------------------------------------------- -
=
256
*
×
72
256
⎛
⎞
-------------------- -
⎝
⎠
100
)
×
---------------------------- -
=
100
256
SOURce Subsystem
(
)
×
( )
100 %
( )
( )
=
72 %
*
⎞
⎠
×
100
( )
=
71.875 %
11
289
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