BNC 645 - Manual (Page 132)

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CALibration:STRing<quoted string>
Record information about calibration. For instance, the name of the person who
did the calibration, the date of the last calibration, or the date of next scheduled
calibration. This information is stored in non-volatile memory and newly
recorded message will overwrite the previous one.
CALibration:STRing?
Query the information about the calibration. Return a quoted string.
CALibration:VALue<value>
Specify the value of the known calibration signal used by the calibration
procedure.
CALibration:VALue?
Query the present calibration value. Return a number in the form of
“+1.0000000000000E+01”.
-- D --
DATA VOLATILE, <value>, <value>, …
Download floating-point values from -1 to +1 into volatile memory. You can
download from 1 to 65,536 points per waveform. The waveform generator takes
the specified number of points and expands them to fill waveform memory. If
the specified number is less than 16,384, the waveform generator automatically
generates a waveform with 16,384 points, and if the specified number is more
than 16,384, a waveform with 65,536 points will be generated.
•
The values -1 and +1 correspond to the peak values of the waveform
when the offset is zero volts.
• The maximum amplitude will be limited if the data points do not span
the full range of the output DAC (Digital-to-Analog Converter).
• The DATA command overwrites the previous waveforms in volatile
memory. If you need to save it, use DATA:COPY command to copy the
waveform to non-volatile memory.
•
Downloading floating-point values (using DATA VOLATILE) is slower
than downloading binary values (using DATA:DAC VOLATILE) but is
more convenient when using trigonometric functions which return