E F Johnson Company 2425795 사용자 설명서

5-10 

Viking™ VP600 Portable Radio Operating Manual

If Emergency Hot Mic has been enabled for emergency calls, automatic transmitting 
occurs with microphone audio unmuted without having to manually press the PTT switch. 
The automatic transmit period is programmed for 10-120 seconds in 10-second steps. If 
this feature or emergency calls are not enabled by programming, automatic transmitting 
does not occur. This feature is initiated only on the first press of the Emergency button. 
Subsequent presses do not trigger automatic transmissions. To reset this function, cycle 
power or press and hold the Emergency button.

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

press the Emergency option button or select that menu parameter. The Emergency Call 
is then sent as described in Section 5.9.1, "Emergency Alarms" if applicable.

2 If the preceding Emergency Hot Mic feature is enabled, the call is automatically 

transmitted without pressing the PTT switch. If it is disabled, press the PTT switch and 
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.