E F Johnson Company 2425333 사용자 설명서

Proceed as follows to send an emergency alarm:

1 If required, select a channel of a system on which Emergency Alarms are enabled and 

then press the EMER option switch. The radio then automatically transmits the 
emergency alarm.

2 Either Normal or Silent operation can be programmed. With the Normal mode, the red 

LED lights, the emergency tone sounds, and “EMERGNCY” flashes in the display. 
This indication continues to flash until the alarm mode is ended (see Step 4).

If silent programmed or the Surveillance mode is selected (see Section 4.10), none of 
these indications occur. If “No Receive Activity During Emergency” is programmed, 
receive audio, the front panel LED, and receive icons are disabled in the receive mode.

3 When the emergency alarm is acknowledged by the dispatcher, “ACK RCVD” is 

briefly displayed and the emergency acknowledge tone (two beeps) sounds. This alert 
tone can be disabled if desired, and neither occur if Silent operation is programmed.

4 The emergency alarm mode is exited when radio power is cycled or by pressing and 

holding the Emergency option switch.

This feature notifies a user when an emergency call is being made on their selected P25 
Conventional or P25 Trunking Talkgroup.

The radio should also be programmed with an “Emergency Clear” button.

If an emergency call is received by the radio on the selected channel, the emergency alarm 
ACK tone will sound (five consecutive tones), and the Emergency Received message will 
display, followed by the unit ID of the emergency radio. If any other emergency calls are 
made after this initial one using a different radio, the tone will not sound, but the unit ID 
will be updated to reflect the most recent emergency call. To exit out of this state, press 
and hold the “Emergency” button. The radio should return to its normal display, and the 
Emergency Received message should no longer show.

The Emergency Call feature allows a user to place an emergency voice call by pressing the 
PTT switch after pressing the Emergency option button. If the Emergency Hot Mic feature 
is enabled, the emergency call is automatically transmitted without having to press the 
PTT switch (see following description). The system to which the emergency channel is 
linked must have Emergency Calls enabled. Analog and Digital (P25) calls can be 
individually enabled.