Installation manual

User & Installation manual
VHF- Communication Transceiver
Doc.-Nr:
DE-3000-800100e
KRT2 & KRT 2A
Revision 4.0
24 of 45
3.7. Self test monitor
There is a permanent back ground test system active.
The field for battery status & error (see Control Elements Overview) is used
to indicate warnings and in case of hardware failure, different error reports.
The warnings are:
BAT low battery voltage (becomes active < 10,5V)
At transmission
A-match bad antenna match or antenna defective.
Also while transmission the TX-flag (left top) can change to
Te Transmission time has exceed (> 2 minutes)
All other reports starting with Er…. Indicating a major hardware failure and
consequently the radio has to be returned to factory.
3.7.1. Optical side tone
Especially on glider use, where no headset to get the side tone, it is very
helpful to see the microphone working.
At left lower side, there is a modulation indicator showing the talking
activity. At no modulation it becomes a small dot in the centre.
Also it indicates a bad antenna matching by getting out of the centre.