GRATING SPECTROPHOTOMETER OPERATING MANUAL
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If power on calibration is selected, it could do white and black calibration
every time when you turn on the instrument. If not, it would be only able
to check records but not complete the test.
If 12 Hours validity is selected, the validity of Calibration will expire in
12 hours. If Expired, it would be only able to check records abut not
complete the test. Until re-calibrate it, the calibration is valid.
If 24 Hours validity is selected, the validity of Calibration will expire in
24 hours. If Expired, it would be only able to check records abut not
complete the test. Until re-calibrate it, the calibration is valid.
When the validity of Calibration expires, the LED light warns red. After
calibrating, the LED light will turn green.
3.8.7 Control Mode
When the instrument communicates with the PC software, the user can
set the specific measurement control mode.
In the system settings interface, click "Control Mode" to choose as shown
in Figure 49. There are three options: Key, P software, keys | PC software.
Key: if selecting this mode, the instrument only could use keys to
complete the test and upload data to PC software when connected with
