ztl350 network test set
DESCRIPTION
PAGA Network Test Set miniaturised inside a 300 x 200 x 120mm casing. This unit has been designed in response to the ongoing problems of commissioning a PAGA system on site.TRANSCRIPT
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Ziztel ZTL350 PAGA loudspeaker
network test set
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The Requirement …..
• The site PAGA [Public Address and General Alarm] is one of the biggest systems within the entire Telecom package.
• The system is required to provide acoustic coverage to all potential listening positions on the site.
• Field cabling and associated field devices is a major installation overhead.
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The Requirement …..
• By far the greatest overhead in setting the PAGA system to work is the commissioning of the field loudspeaker networks which account for 90% of the overall installation.
• Consequently the majority of site time is consumed in fault finding on loudspeaker installation wiring.
• This activity can only be executed upon completion of the entire PAGA installation works.
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The Requirement …..
• Only when the loudspeaker networks and associated central equipment racks are commissioned satisfactorily can the acoustic performance of the PAGA system be verified.
• As a consequence verification and validation of the acoustic design is only usually possible at an advance stage in the project hand over plan.
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The Requirement …..
• Changes to loudspeaker assignment as a result of installation failures or acoustic design anomalies are only totally evident during the critical phase of hand over.
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The Requirement …..
• Re work is exceedingly costly at this stage of the schedule and also exposes the installer to possible penalties for potential delays to the project execution.
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The solution ….
The Ziztel ZTL350 loudspeaker
network test set
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The solution ….
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The ZTL350 Test Set
• A complete PAGA system in a small brief case.
• Light weight – only 7Kg.
• Tiny size – 300 x 200 x 120mm.
• Robust – designed to survive transportation world wide.
• Rugged – designed to operate in wide range of service conditions – eg high ambient temperatures +50C
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ZTL350 Benefits
• Enables checking of the loudspeaker termination cable connectivity as installation proceeds thereby eliminating exceedingly costly re work.
• Enables checking of the acoustic performance of the system at an early stage of the project plan enabling modifications to be actioned at minimal cost / schedule impact.
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ZTL350 Simple use
• The installer connects the speaker circuit cable pair to the Ziztel portable tester via a quick termination block.
• The installer can now switch on an alarm tone or make a speech announcement and verify operation of all the loudspeakers connected on the circuit under test.
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ZTL350 Benefits
• The installer can check the acoustic coverage of the system by switching on a selected alarm tone signal and then measuring broadcast Sound Pressure Level [SPL] with a sound pressure level meter.
• Speech intelligibility can also be checked by making live speech broadcasts and ensuring that speech is both audible, clear and intelligible.
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ZTL350 Benefits
• All loudspeaker networks can be checked electrically / acoustically and signed off in advance of central PAGA rack commissioning.
• Specialist PAGA vendor site attendance is limited only to commissioning the rack and ancillaries, and as such can be carefully monitored to contain day work costs.
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ZTL350 Benefits
• Massive reduction in specialist day work costs.
• No delays at hand over due to possible acoustic coverage issues.
• No project delays due to installation errors.
• Massive reduction in remedial / re work labour costs.
• Reduced exposure to project liquidated damages.
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ZTL350 Test Set Amplifier
• Incorporates a powerful no compromise integral PAGA amplifier module type 350A.
• 350 Watts output capability.
• Industry standard 100 Volt line output.
• Can be used to verify PAGA system networks supplied by other PAGA vendors.
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ZTL350 Test Set Amplifier
• Unconditionally stable, electronically protected against abnormal loudspeaker network conditions including Open / Short circuit, overloaded lines, earth faults.
• Over Temperature protected.
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ZTL350 Test Set Amplifier
• Test set 350A amplifier under going elevated factory heat testing.
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ZTL350 Test Set Alarm tones
• Integral alarm tone generator sub system delivers a range of alarm cadences / frequencies according to International or project specific standards.
• Alarm tone set can be altered by simple file down load.
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ZTL350 Test Set Alarm tones
• Four alarm tones embedded, standard Alarm tone sets include :-
• SOLAS IMO compliant
• NORSOK compliant
• PFEER compliant
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ZTL350 Test Set Speech broadcasts
• Live voice broadcast capability from an integral microphone input.
• Fist microphone or optional goose neck microphone input.
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ZTL350 Test Set Speech broadcasts
• Fist microphone or optional plug in goose neck microphone input.
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ZTL350 Test Set Auxiliary input broadcasts
• Auxiliary input XLR connector fitted allowing external program to be broadcast by the system.
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ZTL350 Test Set
• Low level test ‘Tick Tone’ enables convenient walk down check of entire site installation without full volume alarm tone broadcasts.
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ZTL350 Test Set
• Automatic earth fault detection – provides rapid unambiguous indication of leakage current from either field cable line conductor to earth.
• Resolution is better than 0.5 mA
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ZTL350 Test Set
• Universal mains power supply input.
• Operates from 90 to 254 VAC 50 / 60 Hz.
• Connection by industry standard IEE plug / socket.
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ZTL350 Test Set
• Also operates from optional maintenance free industry standard VRLA valve regulated sealed lead acid battery pile to provide one hour continuous service.
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ZTL350 with Battery back up set
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ZTL350 Test Set
• All controls are rugged toggle type power switches designed to provide long service life under aggressive site conditions.
• Connections are robust industrial metal XLR type plug / sockets.
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ZTL350 Test Set
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ZTL350 Test Set
• Target Loudspeaker Line is connected to the ZTL350 by a special ‘Safe Block’ quick connect / disconnect unit which eliminates the electric shock hazard risk possible with other temporary connection schemes.
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ZTL350 Test Set
• Unit incorporates 100 Volt line isolation switch for rapid disconnection of amplifier 100V drive to the connected speaker network.
• Warning Status indications fitted to show presence of source input program on 100 Volt line drive output.
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ZTL350 Test Set Conclusion
• Early verification and validation of :-
• A] Correct loudspeaker network connectivity - freedom from cable earth faults, short circuit and open circuit lines.
• B] Acoustic performance / coverage for both audibility and intelligibility.
• C] Correct loudspeaker tap assignment.
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ZTL350 Test Set
• The investment in a Ziztel ZTL350 test set will repay it self many hundreds of times over.
• The only question is:-
How did we manage to commission a PAGA system before we had a ZTL350 test set!