User guide

Integrity Voice Alarm Routing Matrix

OP2 Card

This card provides two independent audio outputs (zones) to drive amplifiers. The card contains the audio selector

(which is controlled by the cause and effects software) and a digitally controlled attenuator for each output. It is

possible to program a different output level for each audio input type, i.e. emergency level, normal paging and

background music (BGM). In a typical application, emergency level will be loud and clear, paging level will be quieter,

and BGM will be quieter still.

The card also monitors for faults from the amplifiers through a monitored cable link, and provides a closing contact

which can be set to operate at a specific priority or when a priority level or higher is active on this output. This is

typically used for silencing other sound systems, volume restoration or activating beacons when emergency paging

occurs.

OP2 Zone 1

There may be 2 output zones on an OP2 card. Each of these will have its own tab.

This allows the zone to be named (the name appears on the volume control menus on the mainframe display, for

example), the action for the output contact for that zone to be defined, and all levels to be set. Note that although

Normal and BGM volumes can also be controlled from the Integrity mainframe, Emergency Levels can only be

controlled through Integrity Editor. This is a safety feature to prevent audio levels set up during commissioning being

changed.