EFJohnson 764X - Manual (Page 20)

OPERATION
3-3
November 1998
Part No. 001-7600-001
then ready to be used. To turn power off, press and
hold the POWER switch until power turns off.
3.3.2 ENTERING A PASSWORD
The transceiver may be programmed so that a
password must be entered before the transceiver can
be used. When power is then turned on, “PWORD” is
displayed and the four-digit passcode must be entered.
This code is entered using the F1-F4 and channel
down (
) keys. The number entered by each key is
as follows. The numbers in a block are detected as the
same. For example, “1234” is the same as “6789”. If
the “PWORD” indication does not turn off after enter-
ing four digits, you may have entered an incorrect
number. Cycle transceiver power and try again.
3.3.3 VOLUME LEVEL ADJUSTMENT
The volume can be adjusted in up to 32 steps by
pressing the volume up/down keys ( ). A
graph in the alphanumeric display indicates the current
volume level. If equipped with a
option switch,
you may be able to press (or press and hold) that
switch to enable audio for use as a reference level.
The minimum selectable volume level can be set
by the power-on menu described in Section 3.3.4.
Select this mode and then press F1 to display
“AFMIN”. Then press the volume up/down keys to
select the desired minimum level. The current level is
indicated by the bar graph, or receiver noise can be
enabled as described in Section 3.3.6.
3.3.4 POWER-ON MENU
The power-on menu is a special menu that can be
selected at power on to control various functions.
Proceed as follows:
1. Select the power-on menu by turning power on with
the up and down keys pressed.
2. The F1-F4 keys now control the following func-
tions. Press the switch once to select the function
and then again to return to the normal channel
display.
F1 - Minimum volume level (see Section 3.3.3)
F2 - Key beep on-off (see Section 3.5.4)
F3 - Backlight on-off (see Section 3.5.2
F4 - Squelch adjust (see description which follows)
3. To return the F1-F4 keys to the programmed func-
tions, turn transceiver power off and on again with-
out
pressed.
3.3.5 CHANNEL SELECTION
Channel Scrolling - If the keys are pro-
grammed as or keys, they can be
pressed to scroll up or down through the programmed
channels.
Direct Selection - The F1-F4 and keys can
be programmed to directly select a specific channel.
These keys are then labeled
to .
3.3.6 ADJUSTING SQUELCH LEVEL
The squelch level is adjusted by programming or
selecting the power-on menu just described. Proceed
as follows to use the power-on menu:
1. Select a non-busy channel. Then select the power-
on menu by turning power on with the up and down
keys pressed.
2. Press the F4 option key to select the squelch adjust
mode indicated by “SQ xx”.
3. Press the down key until noise is heard from
the speaker (adjust the volume if necessary). Then
press the up
key until the noise just mutes (the
“SQ xx” number indicates the relative squelch
level).
4. Reselect normal operation by turning power off and
on without the up and down keys pressed.
NOTE: If weak messages are not heard or unsquelch-
ing occurs when no messages are present, slight read-
justment up or down may be required.
Key
Number
Entered
0
5 1
6 2
7 3
8 4
9
F 1 F 2 F 3 F 4
MONI
CH UP CH DN
CH 1 CH 4