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Integrity Sound System to EN60849

Integrity is a feature-packed, fully integrated 2-64 Zone Emergency Sound, PA and BGM system suitable for use in applications of up to sixteen loudspeaker zones. Combining an emergency sound system with a high specification public address system, Integrity can be connected to trigger systems via monitored links from its sounder circuits.

At the heart of Integrity is a 1U 19” rack mount mainframe containing all the logic, routing and prioritising components for the system in a 17-slot card. Slot one contains the central processor card, leaving eight audio input and eight audio output slots. Cards fitted into the eight audio input slots can provide a variety of functions including zoned emergency microphones, emergency microphones, messages, contact inputs, zoned PA inputs and zoned music inputs. The audio output slots can accommodate either contact input cards or two zone audio output cards, allowing up to sixteen audio zones. A single paging console can control up to four Integrity Mainframe units allowing paging to up to 64 zones, ideal for high rise buildings, office blocks, sports stadia, etc.

One of Integrity’s main advantages is its revolutionary simulator software that allows the routing and priorities of multiple audio sources to be set up and tested on a PC before assembling the hardware. This is especially useful as it allows the evacuation C&Es to be checked and approved before any equipment is purchased.

Key Features

  • A fully integrated and cost-effective emergency sound, public address and background music solution for theatres, hotels, sports grounds, exhibition halls, shopping centres, etc.
  • Fully compliant with EN60849 when installed correctly
  • Unique PC software enables an Emergency Sound/PA system to be designed and demonstrated prior to purchase and for this configuration to be directly downloaded into the Integrity mainframe at commissioning
  • Capacity for all cause and effect scenarios to be tested and auditioned, giving customers and designers unrivalled confidence and control over site evacuation management strategies
  • Simple monitored interface
  • Eight audio channels means it is ideal for applications requiring complex routing of multiple channels, such as alert, evacuate, bomb and test messages, paging and music
  • Eight audio output slots for dual audio zone cards allowing up to sixteen audio zones
  • Large 40 character panel displays date/time, location and engineer configurable fault texts
  • Optional Fireman's paging panel can communicate with the mainframe via an RS422 data network, minimising the number of cables required
  • Volume levels in each zone can be set differently for emergency announcements, ordinary paging and background music
  • A single MPC paging console can control up to four Integrity Mainframe units allowing paging to up to 64 zones – ideal for high rise buildings, office blocks, stadiums, etc

System Operation / Components

The Integrity mainframe consists of the CPU card which controls the system, up to 8 audio input cards and up to 8 audio output cards. The choice of input and output cards depends on the application and the needs of the client.

1LS AUDIO INPUT CARD This card is normally used for an FMIC all-call emergency microphone, but can also be used for normal paging microphones or any balanced line-level audio source and may be routed to any pre-defined combination of zones. Up to four firefighter's microphones can be connected to one 1LS card and they will work on a first-come-first-served basis. When multiple inputs are connected to a single card, they must all page the same audio zones. The card also has two additional monitored switch inputs that are normally used to manually trigger the emergency messages, but can be used for any purpose. The card provides full monitoring of the emergency microphone(s) and a fault will result in a text message being logged and displayed on the Integrity system's LCD.

SVM MESSAGE CARDS These cards store Windows .wav files in an internal flash memory chip and have the capacity to support up to 4 messages of up to 2 minutes in length. Three versions are available, the SVMA pre-recorded alert message card, the SVME pre-recorded evacuate message card and the SVM-CUST custom message card. Audio quality is selectable by trading off message length (30 seconds total of best quality 16 kHz 16-bit audio). Messages are loaded the SVM from a PC using an MPD Message Programming Dongle (available separately) which connects to a USB port on the PC. Any failure of memory is flagged to the system as a fault.

CI16 CONTACT INPUT CARD This card provides 17 opto-isolated switch inputs (16 latching triggers plus reset). A 24 Vd.c. 50 mA protected voltage output is provided so that normally open relay outputs can be used. Operating any of the inputs triggers pre-set messages in pre-defined zones depending on the way the cause-and-effects matrix in the mainframe has been set up. The inputs can also be used for any other routing, such as routing music to pre-set zones, in which case, the inputs can be set to automatically un-latch.

BGM MUSIC INPUT CARD Features a pair of phono (RCA) stereo unbalanced inputs. A 4-way dipswitch allows the user to set the sensitivity of the phono connectors for Tape (300 mV), Line (1V) and CD (2V) levels and also enables default selection of audio zones for music. External contacts allow up to 4 individual groups to be manually selected for music, depending on the state of the switch and the programming of the cause and effects software.

GPI GENERAL PURPOSE INTERFACE CARD The GPI card is normally used to allow up to four Integrity mainframes to be linked via one or more (max four) MPCor MPCW series paging and message control consoles. The console(s) can page and control messages in any combination of zones in all four Integrity systems and can display status and fault information from all systems.

OP2 TWO-ZONE AUDIO OUTPUT CARD Provides two independent balanced line level audio outputs to drive amplifiers. The card contains an audio selector (controlled by the cause and effects software) and a digitally controlled attenuator for each output. A different volume level may be programmed for each type of input (emergency, paging and BGM). The card also reports faults from the amplifiers through a monitored output and provides a closing contact typically used for volume restoration or activating beacons when emergency paging occurs.


FMIC EMERGENCY ALL CALL MIC The FMIC is an all-call emergency microphone comprising a red, wall mounted case with fist microphone, two message trigger switches and audio processing and monitoring electronics. It can be semi-recessed using the TBEZ bezel to tidy the edges.

MPC RANGE PAGING CONSOLES The following paging and control consoles are available for use with Integrity:-

  • The MPC16I, MPC32I, MPC48I and MPC64I desk mounting gooseneck mic. consoles (the MPC16I has 16 programmable keys and indicators, the MPC32I has 32 programmable keys and indicators, and so on).
  • The MPC16WI and MPC32WI wall mounting fist mic. consoles

All variants have an LCD that displays system status and fault information and is used to configure the system. Each console's buttons can be assigned to various functions such as selecting audio zones or groups of zones, selecting background music sources, adjusting paging and mic. levels, setting day and night volume levels and selecting/routing messages.

Integrity Sound System

Specific References