Rigol DS1104B - Page 85

Command Systems RIGOL
Programming Guide for DS1000B Series
2-73
5. :WAVeform:SOURce
Command Format:
:WAVeform:SOURce <source>
:WAVeform:SOURce?
Function:
The command sets the source of waveform data which is going to check. The
<source> may be CHANnel1, CHANnel2, CHANnel3, CHANnel4 or MATH.
Returned Format:
The query returns Channel1 or Channel2, Channel3, Channel4, MATH.
Example:
:WAV:SOUR CHAN2 Set the data source as channel 2.
:WAV:SOUR? Return Channel2.
6. :WAVeform:PREamble?
Command Format:
:WAVeform:PREamble?
Function:
This command queries the current waveform settings.
Returned Format:
The query returns 10 data which are separated by comma “,”, they are:
Format,Type,Points,Count,Xinc,Xor,Xref,Yinc,Yor,Yref
Parameter Value:
Format: BYTE – 0; WORD – 1; ASCII – 2.
Type: NORMAL – 0; PEAK_DETECT – 1; AVERAGE – 2.
Points: specified by
:WAVeform:POINts command.
Count: the “average acquisition time” (in average mode) or “1” (other mode);
Xinc: 1/SaRate (RAW) or TimeScale/50 (NORMAL);
Xor: relative time of the trigger points;
Xref: X reference;
Yinc: Y unit voltage;