134 Keysight M8194A 120 GSa/s Arbitrary Waveform Generator User Guide
4 Remote Programming
[:SOURce] Commands
[:SOURce]:CHARacteris[1|4][:VALue]?
Command [:SOURce]:CHARacteris[1|4][:VALue]?
[<amplitude>[,<sample_frequency>]]
Query [:SOURce]:CHARacteris[1|4][:VALue]?
Parameters [<amplitude>[,<sample_frequency>]]
<amplitude> the output amplitude
<sample_frequency> the sample frequency
Parameter Suffix None
Description Query the frequency and phase response data for a channel. The query
returns the data for the AWG sample frequency and output amplitude
passed as parameters as a string of comma-separated values. If the
sample frequency or both parameters are omitted, the currently
configured AWG sample frequency and output amplitude are used.
The frequency and phase response includes the sin x/ x roll-off of the
currently configured AWG sample frequency. As a result the query delivers
different results when performed at e.g. 88 GSa/s or 120 GSa/s.
To achieve optimum frequency and phase compensation results, the
frequency and phase response has been characterized individually per
channel and for different output amplitudes. As a result, the query delivers
different results when performed at e.g. 500 mV or 800 mV.
The frequency and phase response refers to the 2.4 mm connector. In case
external cables from the 2.4 mm connector to the Device Under Test (DUT)
shall be mathematically compensated for as well, the corresponding
S-Parameter of that cable must be taken into account separately.
Format: The first three values are output frequency 1 in Hz, corresponding
relative magnitude in linear scale, corresponding phase in radians. The
next three values are output frequency 2, corresponding relative
magnitude, corresponding phase, and so on.
Examples Query
:CHAR1?
"0,1.01068,0,
1e+008,1.00135,-6.11215e-005,
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