COBHAM SAILOR 6217, Руководство по установке

Страница: 111 / 470

SAILOR 6215/6216 VHF DSC Maintenance
Chapter 4: Service & maintenance 4-35
4444
Service & maintenance
DSC routine
testing Check the DSC function regularly. Verify the
complete DSC installation, with antennas, by
transmitting a Safety Test call to another station
(coast or ship). The test call is generated using the
DSC call flow via menu CALL.
The call should normally be replied by the receiving
station without questioning. The default
configuration of a DSC VHF radio is auto-
acknowledgement of any received Safety test call
requests. If a ship is equipped with multiple radios a
second radio can be the station to check up against.
The transmitting radio will not receive its own
transmitted calls.
If there is only a single radio on a vessel, a facility is
built into the unit where the DSC engine can be
verified using a test call that is internally looped
without activating the radio transmitter PA. The test
is executed via menu SETUP, DSC SETUP. The call
sequence that is verified, is an Individual Safety Test
Call directed to own MMSI. The test status is read in
the display.
Missing MMSI DSC operation is
not working When powering up the VHF for the first time after
leaving factory there is no MMSI number in the VHF
radio. For the DSC operation to function the MMSI
number must be entered in the VHF radio. For further
details see
Entering the MMSI number on page 3-
32.
Radio 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).
Action Symptom Remedy
Table 4-1: Troubleshooting guide (Continued)