Model 6220/6221 Reference Manual
Wave Functions (6221 Only)
7-31
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15. SOUR:WAVE:DUR:TIME <NRf>
‘ Set duration of waveform in time
This command sets the time duration in seconds that the waveform will run
after being started with the INIT command. The default setting is INFinity sec-
onds, and valid choices range from 100e-9 seconds to 999999.999 seconds,
or INFinity. The last duration type sent takes precedence. This command is
not accepted while the wave is armed (Error +404 Not allowed with Wave
Armed).
16. SOUR:WAVE:DUR:CYCL <NRf>
‘ Set duration of waveform in cycles
This command sets the time duration in number of cycles that the waveform
will run after being started with the INIT command. The default setting is
INFinity, and valid choices range from 0.001 cycles to 99999999900 cycles, or
INFinity. The last duration type sent takes precedence. This command is not
accepted while the wave is armed (Error +404 Not allowed with Wave Armed).
17. SOUR:WAVE:EXTR <b>
‘ Enable/disable external triggering
Firmware version A03 and greater supports an external trigger mode to trig-
ger the arbitrary waveform generator using the Model 6221's trigger link lines.
When enabled, this mode waits for an external trigger pulse on a specified
trigger link line and starts the configured waveform within 1
μ
s of the falling
edge of the trigger. This mode cannot be changed while the wave is armed
(Error +404 Not allowed with Wave Armed).
18. SOUR:WAVE:EXTR:ILINE <NRf>
‘ Set external trigger link line
This command sets the trigger link line that will be used as an input to trigger
the arbitrary waveform generator. It only applies if the external trigger mode is
enabled. Any of the six trigger link lines (1 to 6) can be used provided that the
specified line has not already been assigned as the phase marker output
(Error -221 Settings Conflict). If a value of 0 is used, no trigger link line will be
assigned as an input, and nothing will trigger the waveform generator until
another assignment is made.
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