Zeiss LSM 880 Operating Manual page 422

ZEISS
Example 1 - The following words will be recorded:
− at W1:
high byte: 00011001(bin) = 19 (hex); low byte: 123 (dec) = 7B (hex); resulting word = 7B19 (hex)
− at W2:
high byte: 00000000(bin) = 00 (hex); low byte: 255 (dec) = FF (hex); resulting word = FF00 (hex)
Example 2 - The following words will be recorded:
− at W3:
high byte: 00010001(bin) = 11 (hex); low byte: 123 (dec) = 7B (hex); resulting word = 7B11 (hex)
− at W4:
high byte: 00100100(bin) = 24 (hex); low byte: 255 (dec) = FF (hex); resulting word = FF24 (hex)
The first 30 bytes of the raw data file contain the comment "ConfoCor_x_-_Raw_data_file_1.0" and
have to be ignored.
LSM Rel. 4.x and all ZEN versions
This format is already processed into one that describes the time distance between photons.
The format is explained in Fig. 586. The figure displays the raw data in an editor that shows the raw data
in file offset, hexadecimal and as ASCII.
Fig. 586 Rel. 4.x and ZEN raw data format
The first 64 bytes (bytes 0-63) represent the file identifier with the channel number.
The next 16 bytes (bytes 64-79) is the measurement identifier. The identifier is a randomly created
number that will be assigned to all channels, repetitions, positions and kinetic indices of the same
measurement. Hence, in a cross-correlation experiment, the two auto-correlation pairs that belong
together can be identified.
The next 4 bytes (bytes 80-83) encode the position of the measurement and are zero based.
The next 4 bytes (bytes 84-87) encode the kinetic index and are zero based.
The next 4 bytes (bytes 88-91) encode the repetition number and are zero based.
The next 4 bytes (bytes 92-95) encode the detector frequency in Hz.
The next 32 bytes (bytes 96-127) are reserved for comments and set to 0.
The next 4 bytes (bytes 128 -corresponding to a file offset of 7F (hex)=127 (dec)-to 131) code for the first
pulse distance in detector clocks.
The next bytes (starting from byte 132) code for follow up pulse distances.
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CHAPTER 1 - SYSTEM OPERATION
Left Tool Area and Hardware Control Tools
000000-2071-464
LSM 880
10/2014 V_01