General Category > SQM-LU-DL (Datalogging light meter)

Updated manual

(1/1)

admin:
Documentation update: An uncalibrated SQM-LU-DL unit may respond to the "Return one logged record" with a leading mpsas negative sign:

Uncalibrated (negative sign):
Sent: L40000000001x   To: /dev/ttyUSB1   Received: L4,00-01-01 1 01:00:01,-11.52, 019.3C,225

Calibrated (no negative sign):
Sent: L40000000011x   To: /dev/ttyUSB1   Received: L4,00-01-01 1 00:00:21,08.51, 018.6C,222

This means that there may be one extra character (negative sign) in the response field. Comma separation is the better choice when parsing this response.

Updated manual here, see section 4.2.13.5:
http://unihedron.com/projects/darksky/cd/SQM-LU-DL/SQM-LU-DL_Users_manual.pdf

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