E F Johnson Company 2425770 사용자 설명서

Viking Portable 600 Radio Operating Manual

5-11

begin speaking as with a standard call. If the channel is changed, operation continues 
on the new channel in the emergency mode.

3 With analog calls, subsequent presses of the PTT switch cause the DTMF emergency 

ID to be sent according to the ANI programming (if DTMF ANI is enabled on the 
channel). With digital calls, the calls continue to have the emergency bit set.

4 If the Surveillance Mode is enabled (see Section 4.10, "Surveillance Mode"), all 

indicators, lights, and tones are disabled. If “No Receive Activity During Emergency” 
is programmed, receive audio, the front panel LED, and receive icons are disabled in 
the receive mode.

5 To exit this mode, cycle radio power or press and hold the Emergency button.

Viking VP600 radio models support the External Emergency feature. A special man-down 
switch (currently available only from third-party vendors) can be attached to the accessory 
connector of the radio. If this feature is enabled by programming and the radio is in a 
horizontal position for longer than the programmed time (0-63 seconds), an emergency 
condition is triggered the same as if the Emergency button was pressed. The emergency 
can be canceled by a press and release of the Emergency button. 

A user may program an Emergency Talkgroup. If Emergency is activated, the radio uses 
the Emergency Talkgroup instead of the programmed talkgroup. If programmed, the 
Emergency Talkgroup has priority. Please refer to 5.13.7.1, “Talkgroup Lock” for more 
information about this feature.

Channel scanning features common to all operating modes are described in Sections 4.11 
and 4.11.5. The following information describes features unique to conventional 
operation.