Option Switches; Keypad Lock; Low Battery Indication; Channel And Zone Selection - E.F. Johnson Company 5100 SERIES Service Manual

when any key is pressed. It then automatically turns
off after a programmed delay so that battery drain is
minimized.

2.4.5 OPTION SWITCHES

The programmable option switches are as
follows:
•
F1 , F2 , F3 , and F4 on front panel. In addition, with
full keypad (18-key) models, the # key is program-
mable (see Figure 2-1).
•
The two push-button switches on the side panel (see
illustration in Section 2.3.3).
•
The 3-position toggle switch on the top panel (see
Figure 2-2).
If your radio is programmed with both conven-
tional and SMARTNET/SmartZone channels (see
Section 2.4.12), these option switches can be system
operator programmed to control a different set of func-
tions for each channel type. For example, the F1
switch could select Hi/Lo Power when a conventional
channel is selected and Private Calls when a
SMARTNET/SmartZone channel is selected. The
available functions in each mode are indicated in the
tables in Section 2.2. If no option switch has been
programmed to control a particular function, that func-
tion may not be available or may be in a fixed mode.

2.4.6 KEYPAD LOCK

If the Keypad Lock option switch has been
programmed, the keypad can be locked (disabled) to
prevent keys from being accidentally pressed. To lock
the keypad, simply press this switch. Then to unlock it
again, press and hold it until a tone sounds. The
keypad can also be disabled by system operator
programming. It is then permanently disabled and
cannot be re-enabled by the user.

2.4.7 LOW BATTERY INDICATION

When the battery voltage falls below a preset
level, the radio can be programmed so that any or all
of the following indications occur:
•
The indicator on the top panel flashes red in the
transmit mode and green in the receive mode.
•
A chirp sounds every 5 seconds in the receive mode.
•
A chirp sounds every 5 seconds in the transmit
mode.
The battery should be recharged as soon as prac-
tical after a low battery indication appears.

2.4.8 CHANNEL AND ZONE SELECTION

Channel Select
To change the current channel, rotate the 16-
position channel selector knob on the top panel to the
desired position. With SMARTNET/SmartZone chan-
nels, the selected channel is always indicated by an
alias (name). The alias is also displayed with conven-
tional channels if the Display Mode option switch is
not programmed. If this switch is programmed, the
channel number or frequency may also be displayed
(see Section 2.6.2).
Zone Select
A zone is a group of up to any 16 conventional
and SMARTNET/SmartZone channels defined by
system operator programming. Up to 16 zones can be
programmed for a total of 16 x 16 channels per zone or
256 channels. One use of zones may be to select
groups of channels programmed for operation in
different geographical areas or radio systems. If select-
able zones have been programmed in your radio,
consult your system operator for more information on
how they are used. Zones are selected as follows:
1. Press the Zone option switch and the alias (name) of
the current zone is flashed in the display.
2. Use the number keys to enter the desired zone
number or scroll through the available zones using
the and keys.
3. When the desired zone is displayed or entered,
select it by pressing the ENT key or waiting 4
seconds.
2-6
OPERATION
September 2001
Part No. 001-5100-001