Difference between revisions of "File format:Rigol ROF"
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{{DISPLAYTITLE:Rigol ROF}} | {{DISPLAYTITLE:File format:Rigol ROF}} | ||
ROF is a proprietary file format used by the [[Rigol DP800 series]] programmable power supplies. It is used to record the measured voltage and current during operation of the power supply. | ROF is a proprietary file format used by the [[Rigol DP800 series]] programmable power supplies. It is used to record the measured voltage and current during operation of the power supply. | ||
Revision as of 17:27, 3 December 2014
ROF is a proprietary file format used by the Rigol DP800 series programmable power supplies. It is used to record the measured voltage and current during operation of the power supply.
Header
The first 28 bytes of the file are structured as follows:
Bytes | Field |
---|---|
0 - 3 | File identification, consisting of the letters "ROF" and a zero padding (52 4f 46 00 )
|
4 | unknown (always 01 so far)
|
5 | unknown (61 , 6e , 38 )
|
6 - 7 | Length of metadata header, little-endian (0c 00 00 00 )
|
8 - 11 | Always 0x00 |
12 - 13 | Header CRC? |
14 - 15 | Data CRC? |
Metadata header | |
16 - 19 | Sample period in seconds, little-endian |
20 - 23 | Number of points, little-endian |
24 - 27 | Same as number of points. |
The timespan of the file can be determined by:
sample period in seconds * number of points
Data
The data following the header consists of a number of points, where each of these is structured like this:
Bytes | Field |
---|---|
0 - 3 | Voltage, little-endian, times 10000 |
4 - 7 | Current, little-endian, times 10000 |
These points are interleaved per channel. The number of channels can be determined like this:
number of channels = data section size / number of points / pointsize (8)
The entire data section thus looks like this:
CH1 voltage |
CH1 current |
CH2 voltage |
CH2 current |
CH3 voltage |
CH3 current |
CH1 voltage |
CH1 current |
... |