JRC Handy Search NJJ-95B Instruction Manual page 71

Details on 768 bytes of scan test data:
Scan test data per line includes 512 points, and 1-point data consists of 12 unsigned
bits.
Two-point data is sent after being re-listed as 3 bytes, so a total of 512 points (= 768
bytes) are sent.
Data is re-listed according to the rule shown below.
[0xABC]+[0xDEF]→[0xAD]+[0xBC]+[0xEF]
Following the fixed surface wave data, the single-line scan test data explained above is
output for each scan test line. The header of the fixed surface wave data is [0xFF].
Therefore, the length of the data section is variable:
(1 byte of header + 768 bytes of scan test data) x (number of scan test lines +1)
(number of measurement lines + 1)
(2) Text mode
a) Configuration
The data format of the text mode is the same as for the binary mode.
The difference from the binary mode is that the text mode processes all data as ASCII
data.
Header section (ASCII data) + data section (ASCII data)
b) Header section
The configuration of the header section is the same as for the binary mode.
c) Data section
The text mode converts one byte of data output by the binary mode to two bytes of
ASCII data (HEX) and outputs the converted data with [0x0D] and [0x0A] being added.
Remarks
• The size of data in binary mode is smaller than that in text mode, thereby saving
space of the compact flash memory.
• The saved data is A/D conversion data (original image data), but not the one after image
processing such as surface wave processing has been performed.
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