Icom IC-M510 Instruction Manual page 60

7
DIGITAL SELECTIVE CALLING (DSC)
■ DSC Settings
Alarm Status
Sets the alarm ON or OFF when receiving
each type of DSC call.
z Safety
z Routine
z Warning
Sets the alarm for when:
• No MMSI code is entered.
• The position data has not been received
for 10 minutes after turning ON the
transceiver.
• The received position data has not been
updated for 10 minutes.
• The received position data has not been
updated for 4 hours.
• The manually entered position data has
not been updated for 23.5 hours.
z Self-Terminate
An alarm sounds when duplicate
Distress calls are received.
z Discrete
An alarm sounds when a lower priority
call is received while receiving a high
priority call.
CH 70 SQL Level
Sets the Squelch level for Channel 70 to
1 ~ 10 or Open.
47
Self Check Test
The Self-Test sends DSC signals to the
receiving AF circuit to compare the sending
and receiving signals at the AF level.
Push [ENT] to start the Self-Test.
L When the sending and receiving DSC
signals match, "OK" is displayed.
Procedure
(For only the USA version)
You can select the type of task for the
transceiver, depending on the presetting.
Single: Handles only 1 task at the same
time.
Multiple: Handles up to 7 tasks at the same
time.