:WAVeform Commands 28
Keysight InfiniiVision DSOX1204A/G Oscilloscopes Programmer's Guide 639
WORD format (see ":WAVeform:FORMat" on page 644) provides 16-bit access
to the waveform data. In the WORD format, the number of data bytes is twice
the number of data points. The number of data points is the value returned by
the :WAVeform:POINts? query (see page 645). If the data intrinsically has less
than 16 bits of resolution, the data is left-shifted to provide 16 bits of resolution
and the least significant bits are set to 0. Currently, the greatest intrinsic
resolution of any data is 12 bits, so at least the lowest 4 bits of data will be 0. If
there is a hole in the data, the hole is represented by a 16 bit value equal to 0.
Use :WAVeform:BYTeorder (see page 640) to determine if the least significant
byte or most significant byte is to be transferred first. The :BYTeorder command
can be used to alter the transmit sequence to match the storage sequence of
an integer in the programming language being used.
Data Format for Transfer - BYTE format
The BYTE format (see ":WAVeform:FORMat" on page 644 ) allows 8-bit access
to the waveform data. If the data intrinsically has more than 8 bits of resolution
(averaged data), the data is right-shifted (truncated) to fit into 8 bits. If there is
a hole in the data, the hole is represented by a value of 0. The BYTE-formatted
data transfers over the programming interface faster than ASCii or
WORD-formatted data, because in ASCii format, as many as 13 bytes per point
are transferred, in BYTE format one byte per point is transferred, and in WORD
format two bytes per point are transferred.
The :WAVeform:BYTeorder command (see page 640) has no effect when the
data format is BYTE.
Reporting the Setup
The following is a sample response from the :WAVeform? query. In this case, the
query was issued following a *RST command.
:WAV:UNS 1;VIEW MAIN;BYT MSBF;FORM BYTE;POIN +1000;SOUR CHAN1;SOUR:SUBS
NONE
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