Installation guide

VAR4 / VAR12 / VAR20 - Product Description
3.2.1.1 Paging Microphone Mode
It is possible to set any of the Mic/Line inputs for Paging Microphone operation. When configured for this
mode of operation, any ASL Paging Microphone can be supported. For example: DMS5, DMS10, DMS20.
These units are desk consoles that provide zone selection buttons and indicators to show which buttons are
selected and which zones are currently ‘busy’, i.e. in use by another user. The zone selection buttons are
programmable by the VAR Router to correspond to the required outputs or groups of outputs (Mic Routing).
If a Paging Microphone is connected to inputs 1 or 2 the zone selection buttons are also programmable by
the VAR Router for DVA Routing. The primary function is triggering DVAs although it can connect any
desired combination of inputs to outputs. The operation and configuration are similar to that of Latent
Routes; see Section “3.7.3.1 Routing”. Note that a button cannot be assigned as control to switch between
Music A and Music B phono inputs.
Any microphone button may be programmed as an All-Call button. This button is equivalent to pressing all
other configured zone selection buttons.
The security key-switch, when configured, protects the button function. When protected, the key must be
turned on for the button function to be allowed. The security key is intended to safe guard emergency DVA
triggers from inadvertent operation, but may be used protect buttons used only for paging.
The button and LED data is communicated between the Microphone and VAR Router by means of a
dedicated RS485 data link provided on each Mic/Line Input.
3.2.1.2 Zoneable Fire Microphone Mode
Zoneable Fire Microphone operation is configurable for inputs 1 & 2 only. Any ASL Zoneable Fire
Microphone may then be connected. For example: FMS5, FMS10, and FMS20.
These units provide zone selection buttons and indicators to show which buttons are selected and which
zones are currently ‘busy’, i.e. in use by another user. The zone selection buttons are programmable by the
VAR Router to correspond to certain outputs or groups of outputs (Mic Routing).
The zone selection buttons are also programmable by the VAR Router for DVA Routing. The primary
function is triggering DVAs although it can connect any desired combination of inputs to outputs. The
operation and configuration are similar to that of Latent Routes; see Section “3.7.3.1 Routing”. Note that a
button cannot be assigned as control to switch between Music A and Music B phono inputs.
Any microphone button may be programmed as an All-Call button. This button is equivalent to pressing all
other configured zone selection buttons.
The security key-switch, when configured, protects the button function. When protected, the key must be
turned on for the button function to be allowed. The security key is intended to safe guard emergency DVA
triggers from inadvertent operation, but may be used protect buttons used only for paging.
The Zoneable Fire Microphones use the same serial control interface as the Paging Microphones to
communicate button and LED status.
As well as a serial interface, a hardwired PTT is interfaced to the VAR Router. This switch is provided with
resistors to allow the cabling to be monitored for faults.
A hardwired SPEAK-NOW LED and ALL-CALL-ONLY LED are also provided. Operation is as described
below:
• Normal Operation
In normal operation, all routes are set up via the serial interface, and audio is routed via the DSP. The
hardware ALL-CALL contact is used as the PTT in order to provide BS5839 functionality.
A hardwired SPEAK-NOW LED is illuminated on the Fire Microphone once the route is made (and chime
has sounded).
Issue: 03 complete, approved
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