Thrane&Thrane TT-6222A VHF DSC, User Manual

Page: 67 / 90

Chapter 3: Service & maintenance
Troubleshooting guide 53
33333
Service & maintenance
System time DSC logs are
sorted with
wrong time
stamp or
radio time is
incorrect A wrong radio time indication should occur only if
GPS position source is not connected or providing
correct time data. A valid GPS time signal will
update the UTC time used for time stamping the
DSC logs.
If a GPS/position source is not connected to the VHF
radio and hence position and time is entered
manually, you must enter the "radio time" also
manually, at least after power up. This will ensure
correct time stamping of the DSC logs.
The UTC time is the suggested time to be entered
when prompted for entering position and time
manually (every four hours).
DSC Channel
not free DSC
transmission
delayed The transmission of a DSC call which is not of
category distress will be postponed if the VHF radio
is in the process of decoding an incoming DSC call.
As soon as this decoding process has finalized the
transmission will take place.
Handset
configura-
tion No sound in
earpiece The earpiece volume may be configured to OFF. See
section
Controller setup in the user manual on how
to adjust the earpiece volume of the handset.
Device
failure If any of the checks and tests described in this
section do not assist in resolving the difficulties
experienced in the operation and/or performance
of the VHF installation, a fault may have developed
in the VHF radio itself.
When contacting an authorized Thrane & Thrane
representative be sure to provide as much
information as possible describing the observed
behavior - also including the type of the VHF radio,
its serial number, and software release version
(both found in the setup menu Controller Setup).
Action Symptom Remedy