Controls And Display; Front Panel Controls; Top Panel Controls - E.F. Johnson 5100 SERIES Operating Manual

2.1 FRONT PANEL CONTROLS

NOTE: The location of these controls is shown in
Figure 1-1.
Microphone - The microphone is located behind the
small opening shown in Figure 1-1. For best results,
hold the transceiver 2-3 inches from you mouth and
speak at a normal conversational level. Do not shout
since it distorts your voice and does not increase range.
Display - This is a graphical LCD (Liquid Crystal
Display). The display backlight can be programmed to
turn on when any key is pressed or when the Backlight
option switch is pressed or menu parameter selected
(see Section 3.5).
Up/Down Switch - Selects zones when multiple zones
are programmed (see Section 3.3). Pressing the upper
part of the switch selects the next higher number and
pressing the lower part selects the next lower number.
This control also provides up/down select in the menu
mode and in other modes when up/down select is
required.
F1 - In menu mode (see Section 4.2), functions as a
step back and exit switch. If menu mode is not used, it
is a programmable option switch.
F2 - Selects the menu mode when it is enabled by
programming. Also functions as an Enter or Select
switch in the menu and other modes. If menu mode is
not used, it is a programmable option switch.
F3, F4 - Programmable option switches.
DTMF Keypad - The full keypad DTMF models
include the 12 keys required to dial telephone and unit
ID numbers.
Speaker - The transceiver speaker is located near the
bottom of the front panel. When a speaker/microphone
is used, it is automatically detected when the Opt Sel 1
line of the accessory connector is pulled low. The logic
then automatically disables the internal speaker.
SECTION 2 CONTROLS AND DISPLAY
Power On-Off/
Volume Adj
Multi-Function Option
Indicator Switch
Figure 2-1 Top Panel Controls

2.2 TOP PANEL CONTROLS

Multi-Function Indicator - Indicates the following
conditions:
Steady Red - Transmitter keyed.
Flashing Red - Low battery in receive mode.
Steady Green - Carrier detected in receive mode.
NOTE: This indicator is disabled if the Surveillance
mode is programmed (see Section 4.7).
On-Off/Volume - Turning the knob clockwise turns
power on and sets the volume level. Turning it coun-
terclockwise to the detent turns power off. The
minimum volume level can be set by programming.
Channel Switch - This 16-position switch selects up
to 16 channels in the current zone. Additional zones
can be programmed to allow up to 512 channels to be
selected by this switch.
Rotary Option Switch - This is a three-position
switch that can be programmed to control various
options. The "A" position is "off" and the "B" and "C"
positions are "on" (see Section 4.1). When this switch
11

CONTROLS AND DISPLAY

Antenna
Connector
Emergency
Channel
(Option)
Switch
Switch