Operating Manual

March 2008 5100 ES Models II/III Portable Radio Operating Manual 2-5

Controls and Display

2.3 Side Controls

Figure 2.3 Side Controls and Jacks

PTT (Push-To-Talk) Switch - This switch is pressed to turn the transmitter on to transmit

a message. It is then released to listen. Transmitting is indicated when the top panel

indicator is constant red or is displayed (surveillance mode only, see Section 4.8).

Option Switches 1, 2, and 3 - Each of these switches can be programmed to control a

specific function (see Section 4.1). In addition, they can be programmed for soft power

down (see Section 3.1.2). These switches can also be temporarily disabled by the keypad

lock feature (see Section 3.6) or permanently disabled.

Battery - To remove the battery, press the release button on the bottom and pivot the

bottom of the battery outward.

Accessory Connector - This is the connection point for optional accessories such as a

speaker/microphone or earphone. It is also the connection point for the computer when

programming the radio or for data equipment when the P25 Packet Data feature is used

(see Section 5.14.10).

Option Switches

PTT Switch

Battery Pack

Accessory

Connector