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1. OVERVIEW 

1.1 Features and Capabilities 

 
The latest addition in Mackenzie's Overhead Page Management(OPM) 
series of products offers the increased functionality. The OPM-3SM is a 
comprehensive system that combines Page Stacking, Feedback Elimination, 
Pre-Recorded Messaging and Background Music control into a single 
device.  
 
PAGE STACKING/FEEDBACK ELIMINATION: For busy overhead paging 
systems, the OPM-3SM offers 3 channels of page stacking and feedback 
elimination. Each channel can record and temporarily store up to 16 pages 
or 4 minutes of audio. Page input channels can record simultaneously, and 
while the system is playing.  
 
PRIORITY PAGING: For emergencies, the OPM-3SM offers a priority input 
that overrides the stacking and messaging functions and provides 
immediate, real-time access to the paging system. 
 
PRE-RECORDED MESSAGES: For security and general public address 
messaging, a pre-recorded messaging sub-system has been included. 
Access both Record and Play functions of up to 99 messages/8 minutes of 
audio from an extension on your host telephone system. Ten (10) start 
contacts have also been provided to trigger messages from external devices 
such as sensors or alarms.  
 
BACKGROUND MUSIC: To keep everything in harmony, the OPM-3SM also 
includes a background music input. This allows playback of your favorite 
music source over the paging system. When a page or message is played, 
the background music will be muted and the announcement will be heard 
loud and clear. 
 

 

NOTES 

 
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Summary of Contents for OPM-3SM

Page 1: ...e with advanced features such as Music Thru individual message enable disable message sequencing and more Controls and Peripherals Many applications require additional equipment to optimize the perfor...

Page 2: ...However there is no guarantee that interference will not occur in a particular installation If this equipment does cause interference to radio or television reception which can be determined by turni...

Page 3: ...____________________________________ ____________________________________________________________________ Table of Contents 1 OVERVIEW 1 1 1 Features and Capabilities 1 1 2 General Specifications 2 2...

Page 4: ...usic input This allows playback of your favorite music source over the paging system When a page or message is played the background music will be muted and the announcement will be heard loud and cle...

Page 5: ...to the factory for service call us for a return authorization number When you ship your OPM 3SM system you must prepay all shipping cost We suggest that you retain your original packing material in th...

Page 6: ...er indications of the system status via LEDs The description of each LED can be found in section 2 2 1 of this manual Configuration switches are also accessible on the front panel of the unit The desc...

Page 7: ...with the desired mode analog station dry loop or loop start The Message Off Hook LED indicates that you are connected to the system in Loop Start or Analog Station mode A steady tone indicates a corr...

Page 8: ...cording process is complete For example if a long message is being recorded on channel 1 and during that process a short message is recorded and completed on channel 2 the playback order will be the m...

Page 9: ...s pages that are comprised of 3 or more seconds of silence The page is deleted and a busy back tone is generated Other important features include the ability to Record Regenerate or Block DTMF tones f...

Page 10: ...Playback Auxiliary Interface Top row of 12 inputs on the Auxiliary Interface This interface allows playback of pre recorded messages through a momentary closure 100ms Each closure between a Play input...

Page 11: ...s The number of times which each message plays during the playback sequence If multiple messages were recorded into the queue each message will play this number of times 10 Play once Play twice 2 2 14...

Page 12: ...9 10...

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