EFJohnson 764X, 761X TIME-OUT Timer, Option Key Programmable Functions, Beep ON-OFF

OPERATION

•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 ( MONI ) 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 Option Key Programmable

Functions

Function	Key Label		Description
			Section No.
Backlight On-Off	LITE		3.3.9
Bank Select	BANK		3.3.7
Beep on-off	BEEP		3.3.10
Call Guard Tone Select	TONE		3.5.7
Channel Select	CH UP	CH DN	3.3.5
	CH 1	CH 2
	CH 3	CH 4
DTMF Number Select	DTMF		3.5.7
Emergency Switch	EMER		3.5.8
Lock enable/disable	LOCK		3.5.9
Monitor Mode Select	MONI		3.4.4
Output Power Select			3.5.11
	HIGH	LOW1
	LOW2
Priority Channel Select	PRI A	PRI B	3.6.3
Receive Attenuate			3.5.13
	ATT
Scan Select	SCAN		3.6
Scan List Programming	TAG		3.6.2
Talk-Around Select			3.5.16
	TA
2-Tone, 5-Tone Calling	CALL	CAL A	3.5.18
	CAL B	TX CH
	CODE	ID MR
Wide/Narrow Band	W/N		3.5.19
Select

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.

	November 1998
3-5	Part No. 001-7600-001