Single Button Microphone Mode; Miscellaneous Input Mode; Network Channel Mode; Unused Mode - ASL INTERCOM VAR8 Product Description

Failsafe Operation: If the Router detects processor failure or mis-operation, a hardware bypass mode comes
into operation for the Fire Microphones. When this happens the Router provides an ALL-
CALL-ONLY signal back to the Fire Microphone, which illuminates the ALL-CALL-ONLY
LED on the Fire Microphone panel. When the PTT is pressed, an all-call analogue
bypass path is driven which bypasses all processor controlled elements.
The hardwired SPEAK-NOW LED is illuminated on the Fire Microphone once the route is
made.
If the RS485 communications link fails but the Router processor is running correctly the
ALL-CALL-ONLY LED is illuminated and operation reverts to all-call. However in this
case the audio is still routed through the DSP.
2.1.1.4

Single Button Microphone Mode

It is possible to set any of the Mic/Line inputs for Single Button Microphone Operation. For example: SAP01,
and SAP02.
A Single Button Microphone provides indicators and PTT button. The PTT button can be programmed for
zone selection at the Router to correspond to certain outputs or groups of outputs.
The button and LED data is communicated between the Microphone and Router by means of a dedicated
RS485 data link provided on each Mic/Line input.
2.1.1.5

Miscellaneous Input Mode

It is possible to set any of the Mic/Line inputs as Miscellaneous Input Mode. When configured for this mode
of operation, the serial communication interface is disabled and other type of audio input may be connected,
e.g. PC/DVA audio, Long Line PA (LLPA) audio, or an additional background music input. The audio may be
routed by the Permanent Route or Latent Contact Route mechanisms, described in Section
2.1.1.6

Network Channel Mode

By default if a Network Interface Card is fitted in the VAR8 then it will use Router Inputs as follows:
•
Network Channel 1 – Router Input 1
•
Network Channel 2 – Router Input 3
•
Network Channel 3 – Router Input 4
This is the Intellevac Network standard configuration with 3 network audio channels.
It is possible to implement fewer network channels where concurrent broadcast of ALERT, EVACUATE and
Fire Microphone audio is not required. The corresponding VAR8 Inputs would then be available for
connection of local microphones or other audio sources.
Network operation with fewer audio channels is configured by programming the Router, and adjusting the
hardware settings on the Network Interface Card.
2.1.1.7

Unused Mode

It is possible to set any of the Mic/Line inputs to "Unused" Mode. When configured for this mode of operation
they are excluded from routing and audio monitoring.
VAR8 and Variants - Product Description
Issue: 02 complete, approved
Page 12 of 54
"2.6 Control".