![background image](http://html1.mh-extra.com/html/icom/im423/im423_instruction-manual_4301608078.webp)
69
7
DSC OPERATION
New2001
D
Channel 70 Squelch level
Set the squelch level on Channel 70.
The transceiver has 11 squelch levels between 1 (loose
squelch) and 10 (tight squelch) and OPEN.
OPEN is completely open.
q
Enter “CH 70 SQL LEVEL” in the DSC Settings menu.
MENU
➪
DSC Settings
➪
CH 70 SQL Level
(Push [MENU]) (Rotate Dial, then push [ENT].)
w
Rotate Dial to adjust the squelch level until the noise just
disappears, then push [ENT].
• Push [BACK] to cancel and return to the DSC Settings menu.
(default)
Push [EXIT] to return to the normal operating mode.
e
D
DSC Loop Test
The DSC loop test function sends transmit DSC signals to
the receive AF circuit to compare and check the TX and RX
signals at the AF level.
q
Enter “DSC LOOP TEST” in the DSC Settings menu.
MENU
➪
DSC Settings
➪
DSC Loop Test
(Push [MENU]) (Rotate Dial, then push [ENT].)
w
Push [ENT] to start the DSC loop test.
• Push [BACK] to cancel and return to the DSC Settings menu.
• When the transmit DSC and receive DSC signals are matched,
“OK” appears.
Push [EXIT] to return to the normal operating mode.
e
If “NG” appears in step
w
, either or both TX and RX DSC
circuits has a problem. In that case, you will have to send
the transceiver to your nearest dealer for repair.
Summary of Contents for iM423
Page 98: ...89 10 CONNECTIONS AND MAINTENANCE Gasket Mounting base Cap Nut...
Page 104: ......
Page 105: ...MEMO...
Page 106: ...MEMO...