User Guide
6 
Broadcast 
An output is provided to allow the central station to directly talk to the site through loud 
speakers (AV60 Broadcast speaker system). 
Part Set 
The 4 part set inputs are used to enable 4 pairs of microphone inputs,  
The polarity and control of these inputs is programmed by SW1 switch 1 (see page 8) 
This facility can be used to provide a system with area setting facilities or, if used in a domestic 
system, a night set facility. 
Site Announcement 
The AV unit has the facility to record on site an announcement which is then replayed when the 
central station dial in to the site. This acts as a conformation that they are listening to the 
correct site. The announcement can be up to 10 seconds long. 
Function Announcement 
The A.V unit has pre-recorded function announcements, these provide verbal conformation to 
the central station operators that the function they have selected is now in operation. I.E. when 
the central station selects replay recorded audio, the message "STORED" will be played before 
the actual recorded audio is played. This will provide evidence that the central station carried 
out a particular function as all calls are recorded at the central station. 
Site Access Pass Code 
The AV Unit has the ability to use a pass code which must be entered by the central station 
before they can gain access to the audio on site. The pass code function is normally disabled 
to use this facility refer to "programming" on page 9. 
The pass code will be retained even if the power is removed from the AV unit and can only be 
programmed or changed “on site” 
LED Indicators 
There are 4 LED’s to provide information regarding the status of the AV60 Unit during the 
various operating sequences. 
REC  Indicates when the unit is recording. 
AL  Indicates when the unit has been activated by the alarm. 
LINE  Indicates the unit is “on Line” or in Commission mode 
ACK  Indicates that the first control tone has been accepted and is now waiting for the second 
tone. 










