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OPERATION
3-5
November 1998
Part No. 001-7600-001
•
Note if the busy indicator ( ) on the front panel
is being displayed. If it is not, the channel is not busy
and a message can be transmitted.
•
Taking the microphone off-hook disables coded
squelch control if it is programmed for the monitor
function. Take the microphone off-hook and the
indication should be displayed. If no messag-
es are heard, the channel is not busy and a message
can be transmitted.
•
If the monitor ( ) option switch is pro-
grammed, pressing it disables coded squelch control
similar to taking the microphone off-hook. If no
messages are then heard, the channel is not busy and
a message can be transmitted. Press the switch again
to disable monitoring.
•
If the Transmit Disable On Busy feature is pro-
grammed on the channel, the transmitter is automat-
ically disabled if the channel is busy. This is
indicated by the display flashing and a rapid beeping
when the PTT switch is pressed.
3.4.5 TIME-OUT TIMER
The time-out timer disables the transmitter if it is
keyed continuously for longer than the programmed
time. If the transmitter is disabled by this feature, the
transmit indicator ( ) turns off and the display
flashes and a beeping tone is produced until the PTT
switch is released.
One use of this feature is to prevent a channel
from being kept busy for an extended period by an
accidentally keyed transmitter. It can also prevent pos-
sible damage to the transceiver caused by transmitting
for an excessively long period.
There is also a penalty timer that may be pro-
grammed to prevent further transmissions for the pro-
grammed time after the transmitter is disabled.
3.5 PROGRAMMABLE FUNCTIONS
3.5.1 INTRODUCTION
The F1-F4 and keys on the front panel
can be programmed for the functions shown in
Table 3-1. A sheet of labels is included with the trans-
ceiver, and the applicable label should be placed on the
key to indicate its function. Refer to the section listed
in the table for a description of the function.
3.5.2 BACKLIGHT ON-OFF
Refer to Section 3.3.9.
3.5.3 BANK SELECT
Refer to Section 3.3.7.
3.5.4 BEEP ON-OFF
Refer to Section 3.3.10.
MONI
Table 3-1 Option Key Programmable
Functions
Function Key Label
Description
Section No.
Backlight On-Off 3.3.9
Bank Select 3.3.7
Beep on-off 3.3.10
Call Guard Tone Select 3.5.7
Channel Select
3.3.5
DTMF Number Select 3.5.7
Emergency Switch 3.5.8
Lock enable/disable 3.5.9
Monitor Mode Select 3.4.4
Output Power Select
3.5.11
Priority Channel Select 3.6.3
Receive Attenuate 3.5.13
Scan Select 3.6
Scan List Programming 3.6.2
Talk-Around Select 3.5.16
2-Tone, 5-Tone Calling
3.5.18
Wide/Narrow Band
Select
3.5.19
LITE
BANK
BEEP
TONE
CH UP CH DN
CH 1 CH 2
CH 3 CH 4
DTMF
EMER
LOCK
MONI
HIGH LOW1
LOW2
PRI A PRI B
AT T
SCAN
TAG
TA
CALL CAL A
CAL B TX CH
CODE ID MR
W/N