Unihedron SQM-LU, Руководство пользователя

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Unihedron SQM-LU Users manual
4.2.4 Dark calibration command
Dark Calibration is done at the factory along with Light calibration and calibration temperature
recording.
Executing the dark calibration command “
zcalBx
” arms the dark calibration mode. Flipping the
switch triggers the dark calibration and modifies the calibration values in the unit.
Dark calibration is performed in a completely dark environment. Check a reading to ensure that the
period is correct after entering the dark environment, it could take a few minutes to collect an accurate
dark period. A dark period of only a few seconds is too small.
The format of the response is:
Column Example value Description
0
z
Calibration response is being returned.
1
B
Dark Calibration.
2
a
Armed.
3
L
L = Locked; Wait for unlock before calibrating after Arm command,
firmware upgrades are disabled.
U = Unlocked; Calibrate immediately after Arm command, Enable
firmware upgrade.
4-5 Carriage return (0x0d), Line feed (0x0a).
Table 5: Dark calibration response
An example is:
zBaL
012345
Revision 1.1 Page 11 Last modified: Jun 18, 2011