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WORD Format
Word data is two bytes wide with the most significant byte of each word
being transmitted first. In WORD format, the 15 least significant bits
represent the waveform data. The possible range of data is divided into
32768 vertical increments. The WORD data structure for normal and average
acquisition types are shown in figure 35-2. If all "1’s are returned in the 15
least significant bits, the waveform is clipped at the top of the screen. If all
"0’s are returned in the 15 least significant bits, the waveform is clipped at
the bottom of the screen.
WORD (and ASCII) format data is more accurate than BYTE format data.
BYTE format simply truncates the 8 least significant bits of WORD format
data.
Figure 35-2
Word Data Structure
ASCII Format
ASCII formatted waveform records are transmitted one value at a time,
separated by a comma. The data values transmitted are the same as would
be sent in the WORD format except that they are converted to an integer
ASCII format (six or less characters) before being transmitted. The header
before the data is not included in this format.
WAVeform Subsystem
Format for Data Transfer
35-5