Doc.No.: 03118-000
-OP
Page 7 of 8
GA overrid
es Emergency PA temporary in case EM PA is active before GA is turned on as a
temporary guarantee for GA notification. (EM PA will then be able to re-activate and over
ride
GA as normal and with highest priority)
o When the s
ystem is occupied the Zone buttons indicators of the Control Unit (MPA 1601
/1604/1605/1606/1643) will light up red.
o When the priority rules (above) allow override from a specific Control Unit, the Emergency
PA or PA button indicators on the unit are unlit.
o When the priority rules do not allow override from a specific Control Unit, the Emergency
PA or PA button indicators on the unit are lit up red
2.5 ZONES
The MPA 1600 is divided into 6 different Zones. During normal paging (not EM PA) the different
areas can be selected by activating the zone keys before the PA key. Any zone combination can be
selected. To disengage the selected zone selection each activated zone must be manually turned off.
If the PA button is activated without any previous zone selection the pre-programmed default zone
selection is activated.
2.6 LOCAL MUTE
Each MPA 1601/1604/1605/1606/ Control Unit has built-in mute relays, which will be active during
paging from this user. Routing local speakers through these relays will minimize the risk of audible
feedback.
2.7 VOLUME OVERRIDE
Each zone has a "volume override" output that will disable local volume settings.
In an entertainment system it is convenient to have local volume controls at the loudspeaker. However,
alarms and PA messages needs to be distributed at full volume and will activate this override while
activated.
2.8 ALARM PRIORITY.
The General Alarm has priority over Normal PA messages and any entertainment source. The General
Alarm has normally priority below Emergency PA in order to make authorised operators able to give
important messages during alarm.
2.9 ATTENTION TONE
Each paging will be announced with an initial attention tone. This attention tone is different, dependant
of the PA situation in order to distinguish between normal and emergency paging.
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