The EMS10, EMS20 and EMS50 Emergency Microphone Stations are EN54 compatible emergency microphones which?provide live and pre-recorded message broadcast into user selected zones. The EMS10 provides 10 button selection?capability whilst the EMS20 provides 20 buttons, and the EMS50 is formed from a 20 button EMS20 together with an?additional 30 button EMX30 expansion unit. All microphones also provide EN54 compliant emergency functions and all?EN54 mandatory indicators and controls.The microphones are housed in a lockable wall-mounting box and feature a graphic LCD display together with indicators?for ?Power?, ?Voice Alarm?, ?System Fault?, ?Fault? and ?Speak Now?. The LCD display provides remote access to the list of?active faults in the PA/VA system, while the EN54 mandated control keys enable navigation through the fault list, and?also provide remote fault acceptance and clearance.The microphones have multiple PA/VA system interfaces and can be connected directly to either one or two ASL audio?routers, enabling multiple options for system redundancy. The microphones will operate in an All-Call hardware bypass?fallback mode even in the event of processor failure within the host Voice Alarm Router1. This hardware bypass function?also operates across whole facilities when the microphones are used in conjunction with ASL?s Intellevac safety audio?network. There is also a non-EN54 RJ45 Ethernet IP interface with Power over Ethernet capability2 for VoIP connections?to ASL IP based PA/VA systems. All interconnect cabling and the microphone capsule is continuously monitored for?open and short circuits.

The EMS01 Emergency Microphone Station is an EN54 compatible emergency microphone which provides All-Call functionality for making live emergency announcements to entire facilities. The microphone provides EN54 compliant emergency functions and all EN54 mandatory indicators and controls. The microphone is housed in a lockable wall-mounting box and features a graphic LCD display together with indicators for ?Power?, ?Voice Alarm?, ?System Fault?, ?Fault? and ?Speak Now?. The LCD display provides remote access to the list of active faults in the PA/VA system, while the EN54 mandated control keys enable navigation through the fault list, and also provide remote fault acceptance and clearance. The EMS01 has multiple PA/VA system interfaces. It can be connected directly to either one or two ASL audio routers, enabling multiple options for system redundancy. The EMS01 will operate in an All-Call hardware bypass safety mode even in the event of processor failure within the host Voice Alarm Router2 . This hardware bypass function also operates across whole facilities when the microphone is used in conjunction with ASL?s Intellevac safety audio network. There is also a non-EN54 RJ45 Ethernet IP interface with Power over Ethernet capability3 for VoIP connections to ASL IP based PA/VA systems. All interconnect cabling and the microphone capsule is continuously monitored for open and short circuits. Top, bottom and rear cable entry points are provided by means of ?knock-outs? in the enclosure, while the field connections are provided by means of a set of terminals on the inside rear panel of the back box. The EMS01 is compatible with the whole range of ASL Voice Alarm and Public Address systems4 , and is designed to comply with EN54-16, ISO 7240-16 and BS5839-8. Versions with multiple PA/VA zone select buttons are also available for applications which require this.

The AEL02 Active End of Line Device enables ASL amplifier systems to monitor either single or dual loudspeaker circuits without the need for DC blocking capacitors in the loudspeakers. This makes it ideal for retrofitting into existing installations where it is not possible to modify the installed loudspeakers. The loudspeaker monitoring using the AEL02 is fully compliant with BSEN 5839 Pt 8. The AEL02 operates by utilising 30 Hz and 20 kHz surveillance tones that are output by the iPAM400 Intelligent Public Address Amplifier Mainframe, or by LSDDC or LSIDC amplifier interfaces in other types of ASL amplifier systems*,**. The AEL02 derives power from the 20 kHz surveillance tone, and monitors the line integrity by detecting the 30 Hz surveillance tone. On detection of the 30 Hz surveillance tone, the unit introduces a periodic signal current which the standard circuit within the ASL amplifier systems unit can detect. If the 30 Hz tone is lost due to open or short circuit, then this periodic signal disappears and a line fault is reported. The earth monitoring circuit within the ASL amplifier system can still detect ?real? earth faults.

Front Panel For IPAM400 - 1 x MX400 Amplifier

Front Panel For IPAM400 - 1 x MX200 + 2 x MX100 Amplifiers

Front Panel For IPAM400 - 2?x MX200 Amplifiers

Front Panel For IPAM400 - 4?x MX100 Amplifiers

The iPAM400 is a complete IP-enabled Public Address solution in a single box. It combines 400W of power amplification that can be divided into four channels with local audio and IP input capability, message storage, an optional text to speech engine and loudspeaker line monitoring. As such, the iPAM400 is often installed in smaller railway stations or in a campus type installation with a number of remote buildings controlled from a central location.DC and AC Line MonitoringBy offering both DC and AC line monitoring, the iPAM400 is very flexible for both new projects where DC monitoring can be used by ensuring new loudspeakers are equipped with DC blocking capacitors or in a retrofit system where existing loudspeakers do not have DC blocking capacitors and can therefore work with impedance based AC monitoring only. Loudspeaker line monitoring is a powerful maintenance tool when sites are remote ? it?s vital to know if messages are actually being heard.Runs VIPA-OSASL?s VIPA-OS runs on the iPAM400 allowing it to be part of a large IP based system able to send and receive audio streams from other devices on the LAN or WAN. It also means that the iPAM400 can work with ASL?s DVA02 and Long Line Public Address iVENCS workstations. Using this combination the ASL iPAM has been installed across a whole country with a single central control position handling messages both pre-recorded and live over a 1500 mile long network.

There are two local inputs for ASL microphones in addition to the IP audio input and these inputs can be assigned different priorities as needed. There is also an expansion card XIO002 which provides 2 more audio inputs and 4 line level audio outputs that can then feed additional external amplifiers.