Paging Override Module
PR7400
Remote Paging Override Module
Output Side View
Highlights
It works with any 100V line audio inputs to convert into balanced line audio output
Works seamlessly with any system for making emergency overriding to local system
PR7400 is used to provide a relay contact whenever a paging is in progress, as well as converting the 100V line paging audio to line level, in summary as :
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Relay :
NO and NC relay of 1A contact allows local BGM source overriding, bypass local volume controller to allow central paging to pass through. This is useful during essential paging and whenever 24V DC overriding signal is not available in the cabling works.
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100V - Line audio converter
When it is required that the central paging to be broadcasted to local speakers utilising the local amplifier / system, it provides an audio conversion with balanced line audio.
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Features
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DPDT with NC and NO relay for different output configurations
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100V to Line audio conversion
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Adjustable detection sensitivity, relay trigger duration
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Adjustable line output volume
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Suitable for remote overriding for installations without 24V DC VC overriding cable
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Modular for flexible placement of unit such as in cabinets, risers, etc
Suggested Installations :
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- Boutiques / restaurants
- Function rooms
- Remote buildings linked with 100V without
24V DC overriding signal
- Classrooms etc with volume controllers
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Technical Specifications
Voltage
Consumption
Paging input
Sensitivity threshold
Detection frequency
Relay
Relay contact
Paging load / rating
Trigger duration
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Audio output
Output level
Freq response
Isolation to 100V
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Indicators
Connections
Dimensions (mm)
Weight
24 DC via local adapter
2.1W ( standby )
2.5W ( operating )
50 / 70 / 100V line
5 - 80V rms
80 - 5 KHz
NC and NO ( DPDT )
1A @ 24V DC
100W @ 100V
5 - 18 seconds
line balanced
Mute - 0 dB
20-20 KHz +/- 3dB
37.5dB
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Power, Relay trigger, Audio
Detachable Phoenic
50 X 147 X 40 WH
200g ( est )
Documents
Catalogue
Instruction Manual ( Nov21)
ACAD Image
Application Examples
Certain zones, such as retail units, restaurants, theaters are normally free from normal paging of central system, and they would have own localized BGM or simple PA.
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Only essential paging would pass through the localized speakers. As such, PR7400 would be employed to provide overriding of local volume controller ( if available ) and inserting line audio to the mixer.
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In this example, audio to the speakers is powered from local amplifier.
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In this setup, central paging shall power the local speakers, regardless whether the local amplifier is turned on or off. This shall be a preferred setup and useful for emergency paging.
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It is important to consider the load of local speakers and provide adequate power rating of amplifiers at central rack.
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