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1. Test of the basic functions
1.1 Switch On functions
With the „I/O“ button the LSG/LSK is switched on. All LCD-segments, die red LED, the beep
and the LCD lightning are switched on. By pressing the I/O Taste longer this function check will
be done correspondingly longer.
Switch on display with all LCD segments
After that the firmware version is displayed shortly. Version 1 = right bar etc.
LSG : Display firmware version 1
LSK : display firmware version 1
1.2 Buttons
With the „I/O“ button the instrument is switched on and the display mode can be changed.
By long pressing of the „I/O“ button the LSG-LSK will be switched off. Press the button as long
as the bars cannot be seen anymore.
By pressing the “Hold“ button a later zero setting of the ppm display is possible and the
selection of the options can be done.
1.3 Red LED
The red LED is for the display of the gas concentration. The blinking frequency increases with
the gas concentration. Is a calibration possible the LED is blinking with 1 Hz.
1.4 LED for lightening the LCD
During switch on the LCD lightening is always activated. During normal operation the lightening
can be switched on optionally.
