I Display Set Mode Items - Icom IC-91A Instruction Manual

D D DTCS polarity
Sets DTCS polarity from "BOTH N"
, "TR-RN"
(TX: normal, RX: reverse)
"BOTH R" .
(TX/RX: reverse)
DTCS POLARITY DTCS POLARITY
BOTH N BOTH N
r
TN-RR TN-RR
TR-RN TR-RN
BOTH R BOTH R
TX/RX: Normal polarity
D D DTMF speed
Select the desired DTMF transmission speed from 100 msec,
200 msec, 300 msec, 500 msec.
• 100 : 100 msec. interval; 5.0 characters per second
(default)
• 200 : 200 msec. interval; 2.5 characters per second
• 300 : 300 msec. interval; 1.6 characters per second
• 500 : 500 msec. interval; 1.0 character per second
DTMF SPEED DTMF SPEED
100 100
r
200 200
300 300
500 500
, "TN-RR"
(TX/RX: normal)
and
(TX: reverse, RX: normal)
(default: BOTH N)
DTCS POLARITY
BOTH N BOTH N
TN-RR TN-RR
TR-RN TR-RN
BOTH R BOTH R
r
TX/RX: Reverse polarity
DTMF SPEED
100 100
200 200
300 300
500 500
r
MENU SCREEN OPERATION

I Display set mode items

D D Display backlighting
The transceiver has display backlighting with a 5 sec. timer
for night time operation. The display backlighting can be
turned ON continuously or turned OFF, if desired.
• OFF : The backlight is turned OFF.
• ON : The backlight continuously lights ON.
• AUTO : Lights when an operation is performed, goes out
after 5 sec. (default)
*Continuously lights ON while operating with an
external DC power source.
BACKLIGHT
OFF OFF
ON ON
AUTO AUTO
r
D D Busy LED
The TX/RX indicator lights green while receiving a signal or
when the squelch is open. This indication can be turned OFF
to conserve the battery power, if desired.
• OFF : The indicator does not function even if a signal is
received.
• ON : The indicator lights green while receiving a signal
or when the squelch is open.
BUSY LED
OFF OFF
ON ON
r
11
(more than 10 V DC)
BACKLIGHT
OFF OFF
r
ON ON
AUTO AUTO
(default)
BUSY LED
OFF OFF
r
ON ON
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