Dräger Oxylog 3000 plus - Checking Loudspeaker, Buzzer, LEDs, and Display

Instructions for use Oxylog 3000 plus SW 1.n 101
Configuration
Checking the loudspeaker, buzzer, LEDs
and display
To test the loudspeaker, buzzer, all LEDs and the
display:
1 Select the required test.
2 Confirm the selection by pressing the rotary
knob. The requested function is tested by the
device.
To test the display (Test display):
3 Turn the rotary knob; various test cards are
displayed.
The selected test remains active until the rotary
knob is pressed again.
Displaying power supply data
The parameters of the rechargeable battery and
the status of the external power supply are
displayed.
Display (example):
To advance to the second page:
 Select line Page, confirm and turn the rotary
knob.
Display (example):
09537170
09637170333