CODEWITHSUNDEEP
binaryfileschannelvoltsample-rateoscilloscope
Ricardo Erckert
Ricardo Erckert

Reputation: 85

binary format of a PeakTech 1330 oscilloscope

Does anybody know the binary format of a PeakTech 1330 oscilloscope?

What I do know: The first 32 byte seem to be a header describing the instrument. The last 94 byte seem to describe the setting (gain, time scale, channel used ...) - but I have no clue of the coding. In the middle it looks like a dump of the ADC samples (1 byte per sample)

What I need: I want to read the scaling from the last 94 bytes to give the data a physical meaning in Volts and Seconds. (multiplying ADC values with gain factors and sample number with time scale).

Upvotes: 1

Views: 105

Answers (1)

Ricardo Erckert
Ricardo Erckert

Reputation: 85

  1. byte 0..9: headder holding device name
  2. byte 23..26: record length (total), MSbyte at 23
  3. byte 28..31: data field length (MSB at byte 28)
  4. byte 32..end_data: ADC sample values (-128..+127)
  5. end_data+1+x
  6. x=6..9: number of sample points per channel
  7. x=17: time scale (2ns/div=x00..100s/div=x20)
  8. x=18..21: trigger offset, MSB first, 1LSB=0.2ns
  9. x=26: length of channel description (n*67byte. n=number of channels)
  10. x=27..29: channel name (CH1, CH2, CH3...)
  11. x=38..41: trigger delay
  12. x=42..45: samples in visible range
  13. x=46..49: number of samples outside visible range 13: x=62..65: totqal number of samples
  14. x=73: vertical offset. LSB=0.04div.
  15. x=77: sensitivity (20mV/div=x00..50V/div=x0A
  16. x=82..85: measured frequency 32bit float big endian (sign is in byte 82, Mantissa LSB is byte 85

Upvotes: 1

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