SigTEL Compact Installation and Configuration Manual
SigTEL Approved Document No. DAU0000091 Rev 5 Page 21 of 36
Emergency Voice
Communication System
Rcnt Calls
>
Extension 1
Extension 2
Extension 3
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c
Extension 4
14 MCU/LCU Indicators & Controls
14.1 External indic ators
Disablement
Amber
The EVCS is powered up and checking for faults but
the MCU is disabled from making, or receiving calls,
until an external trigger is applied, e.g. from a fire
alarm panel. This is NOT a fault indicator.
This function is used to stop nuisance/malicious use
of the EVCS until the system is required.
System Fault
Amber
There is a problem with the microprocessor.
If this indicator cannot be extinguished, there may be
a serious problem with the microprocessor. Contact
the service company responsible for the EVCS.
PSU Fault
Amber
There is a fault with the Mains power supply or back-
up batteries.
General Fault
Amber
There is a local or remote fault on the EVCS. The
display will show more information.
Power (Mains or battery) is present.
14.2 The display
The liquid crystal display (LCD) shows call status, system information, fault information and uses the following
graphic symbols:
Display conventions
Standard / non-active displays are shown normally, e.g. ‘ Extension 2’
Active displays are shown reversed, e.g. ‘> Extension 1’’
The flashing graphic symbol in front of an extension name means this extension is calling the MCU, or the MCU is
calling the extension. The display’s backlight also flashes red when the MCU is receiving or making a call.
A reversed graphic symbol in front of an extension name means you are connected to this extension.
MCU (ECU-16, ECU-8 or ECU-4)
LCU (ECU-8NT)
Type A (fire telephone) outstation
Type B (disabled refuge) outstation
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Disabled persons toilet alarm (DPTA)
>
The display entry is highlighted, ready to be selected
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