Tabor Electronics 5251, Руководство пользователя

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TE5251
User Manual
4-52
SWEep:TIMe<time>(?)
Description
This specifies the time that will take the 5251 to sweep from start to stop frequencies. The time does not
depend on the sweep boundaries as it is automatically adjusted by the software to the required interval. At
the end of the sweep cycle the output waveform maintains the sweep stop frequency setting except if the
5251 is in continuous run mode where the sweep repeats itself continuously.
Parameters
Name Range Type Default Description
<time> 1.4e-6
to 40 Numeric 1e-3
Programs the sweep time. Sweep time is
programmed in units of s.
Response
The 5251 will return the present sweep time. The returned value will be in standard scientific format (for
example: 100ms would be returned as 100e-3 – positive numbers are unsigned).
SWEep:DIRection(UP|DOWN}(?)
Description
This specifies if the 5251 output will sweep from start-to-stop (UP) or from stop-to-start (DOWN)
frequencies. Sweep time does not affect the sweep direction and frequency limits. At the end of the sweep
cycle the output waveform normally maintains the sweep stop frequency setting but will maintain the start
frequency, if the DOWN option is selected except if the 5251 is in continuous run mode where the sweep
repeats itself continuously.
Parameters
Name Type Default Description
UP Discrete UP Selects the sweep up direction
DOWN Discrete Select the sweep down direction
Response
The 5251 will return UP, or DOWN depending on the selected direction setting.
SWEep:SPACing(LINear|LOGarithmic}(?)
Description
This specifies the sweep step type. Two options are available: logarithmic or linear. In linear, the
incremental steps between the frequencies are uniform throughout the sweep range. Logarithmic type
defines logarithmic spacing throughout the sweep start and stop settings.
Parameters
Name Type Default Description
LINear Discrete LIN Selects the linear sweep spacing
LOGarithmic Discrete Select the logarithmic sweep spacing
Response