E F Johnson Company 2425720 사용자 설명서

5-8 

Viking™ VP600 Portable Radio Operating Manual

Emergency Alarms and Calls are separate functions that can be individually enabled or 
disabled on each analog and P25 conventional system. The Emergency option button or 
menu parameter is required for these functions. Emergency Alarms and Calls are 
transmitted on the global (radio wide) emergency zone/channel if one is programmed. If it 
is not programmed, the emergency is transmitted on the selected channel. The emergency 
programming of the system to which that channel is linked controls the emergency 
operation. Up to 255 Emergency Lists may be programmed. A specific list may be 
selected for each channel.

An emergency alarm is a special transmission that alerts a dispatcher of an emergency 
situation. It is sent automatically by pressing the Emergency option button or selecting the 
Emergency menu parameter. The system to which the emergency channel is linked must 
have Emergency Alarms enabled.

In the P25 conventional mode, a special P25 emergency data transmission is sent, and in 
the conventional analog mode, an analog signalling packet is sent (both are programmed). 
Refer to Section 5.12.3, "MDC1200 Compatibility" for information on MDC1200 
Emergency Alert.

For an Emergency Alarm:

• The DTMF Emergency ID is sent.

• The MDC ID is sent with the emergency bit set.

• The Five Tone ID is sent with the fifth tone being status type emergency.

• GE Star ANI is sent.

• Two Tone Encoder is sent.

• No special action is done with the single tone.

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 Emergency option button or select that menu parameter. The radio then 
automatically transmits the emergency alarm.

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

LED lights, the emergency tone sounds, and “EMERGENCY” flashes in the display. 
“EMERGENCY” continues to flash until the alarm ends. If “Silent” is programmed, 
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.