ZTL350 Network Test Set

Ziztel ZTL350 PAGA loudspeaker

network test set

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.


• 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.


• 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.


• 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.


• 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.

The solution ….

The Ziztel ZTL350 loudspeaker

network test set

The solution ….

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

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.

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.

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.

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.

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.

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.


• Unconditionally stable, electronically protected against abnormal loudspeaker network conditions including Open / Short circuit, overloaded lines, earth faults.

• Over Temperature protected.


• Test set 350A amplifier under going elevated factory heat testing.

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.

ZTL350 Test Set Alarm tones

• Four alarm tones embedded, standard Alarm tone sets include :-

• SOLAS IMO compliant

• NORSOK compliant

• PFEER compliant

ZTL350 Test Set Speech broadcasts

• Live voice broadcast capability from an integral microphone input.

• Fist microphone or optional goose neck microphone input.

ZTL350 Test Set Speech broadcasts

• Fist microphone or optional plug in goose neck microphone input.

ZTL350 Test Set Auxiliary input broadcasts

• Auxiliary input XLR connector fitted allowing external program to be broadcast by the system.

ZTL350 Test Set

• Low level test ‘Tick Tone’ enables convenient walk down check of entire site installation without full volume alarm tone broadcasts.

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

ZTL350 Test Set

• Universal mains power supply input.

• Operates from 90 to 254 VAC 50 / 60 Hz.

• Connection by industry standard IEE plug / socket.

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.

ZTL350 with Battery back up set

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.

ZTL350 Test Set

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.

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.

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.

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!

ZTL350 Network Test Set

Engineering

Transcript of ZTL350 Network Test Set