Icom iM423, Инструкция по эксплуатации

Страница: 79 / 108

70
7
DSC OPERATION
New2001
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
When the optional MA-500TR
CLASS B AIS TRANSPONDER
is
connected to your transceiver, an individual DSC call can be
transmitted to a selected AIS target, without needing to enter
the target’s MMSI code. In this case, the call type is automati-
cally set to Routine.
See page 84 for connecting instructions.
To ensure correct operation of the DSC function, make
sure you correctly set the CH70 SQL LEVEL. (p. 69)
Step 1: Transponder’s operation
Select a desired AIS target on the plotter, target list or dan-
q
ger list display.
• You can also go to the next step whenever the detail screen of
the AIS target is displayed.
• Make sure the transceiver is in the normal operating mode. Oth -
erwise, you cannot make an individual DSC call using the tran-
sponder.
Push [DSC] to display the voice channel selection screen,
w
and then push [ Y ] or [ Z ] to select a desired voice chan-
nel*.
• Voice channels are already preset into the transponder in recom -
mended order.
* When a coast station is selected in step
q
, a voice channel will
be specified by the coast station, therefore you cannot change
the channel. The transponder will display “Voice Channel is
specified by the Base station,” in this case.
Push [DSC] to transmit an individual DSC call to the AIS
e
target.
• If Channel 70 is busy, the transceiver stands by until the channel
becomes clear.
• If the transceiver cannot make the call, the transponder will dis -
play “DSC Transmission FAILED.”
Making an Individual call using an AIS transponder
■
Transponder’s display Transceiver’s display
Transponder’s display Transceiver’s display