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DocNo.DCP0001328  RnB  10/10/03  rev6 

Operation Instruction Manual 

SVMP2-8  Media Player 

 

Features 

The SigNET SVMP2-8 digital audio announcer is designed for integration into the SigNET LS network or 
SigNET LinX systems. 

The SVMP2-8 is a dual message store containing two Soundvault modules each available with 8Mb of 
message storage space.  Bandwidth is up to 16 kHz. 

Each Soundvault module unit has the capacity of up to two minutes of storage, of which can be segmented 
into four messages.  Message length is dependent on the bandwidth of recording. 

The SVMP2-8 unit itself is only approximately half the width of a 19” panel, and therefore to allow for location 
in an equipment cabinet can be mounted behind a SigNET 19” 1U vent panel. 

The front panel operation indicators on the SVMP2-8 are compliant with the requirements of BS5839 part 4. 

Technical Description 

Message triggering is performed by closing the contacts to the relevant connector at the rear of the SVMP2-8 
unit depending on whether message one or message two is required.  Contacts must remain closed for a 
minimum of 250 milliseconds. 

Subsequent to a successful contact closure message play will commence after a 500 millisecond delay.  If 
the closing contact is removed after the initial closure the message will continue to play to the end and then 
cease.  If the closure is maintained the message will repeat with a gap of approximately 500 milliseconds 
between messages. 

The message will play as long as the trigger is active.  When the trigger is de-activated the message will play 
to the end of its current cycle then stop.  If the message select inputs change whilst the trigger is active the 
message playing will stop at the end of it’s current cycle and be replaced by the message indicated by the 
select inputs. 

Multiple messages 

As each module can store a number of message segments two select lines are 

available (through the Expansion port) to access the correct segment. 

Connecting the relevant combination of select lines to ground (see page 3) will access the required segment 
then the trigger can be activated to play the selected segment.  The trigger connections are also mimicked 
on the expansion port to simplify cabling. 

Front panel features 

 

Name Function 

Description 

Audio Fail 

Indicates that audio output is faulty. 

Switch Fail 

Indicates that the trigger input circuit has failed. 

Module Fail 

Indicates the module is not responding or has failed its checksum. 

Message 

When a message is triggered one of the four LED’s will light to Indicate which  
message segment (1 to 4) is playing. 

Power   

Indicates which message connector is supplying to the SVMP2-8. 

Summary of Contents for SVMP2-8

Page 1: ...g contact is removed after the initial closure the message will continue to play to the end and then cease If the closure is maintained the message will repeat with a gap of approximately 500 milliseconds between messages The message will play as long as the trigger is active When the trigger is de activated the message will play to the end of its current cycle then stop If the message select inpu...

Page 2: ...Page 2 of 6 DocNo DCP0001328 RnB 10 10 03 rev6 Block Diagram SVMP2 8 block Module block ...

Page 3: ...amming port for module 2 3 Message The 24 VDC only needs to be supplied on one of the message connectors 4 Expansion To access a message segment connect the following select lines to ground seg1 No select lines seg2 select line 0 seg3 select line 1 seg4 select lines 0 1 5 Triggers 6 Options Sets the end of line resistors on the trigger see page 7 ...

Page 4: ...trictly one to one Maplin Professional Supplies part No JC12N is recommended Two message modules are available 11kHz and 16kHz The 16kHz model provides approximately 32 seconds of audio per module The 11kHz model provides slightly inferior but still acceptable audio quality and provides approximately 44 seconds of audio per module The wave file format defines the sample rate and coding used so no ...

Page 5: ...m the SVMP2 8 to the next unit in the chain via the PTT output using the same principle as the Trigger input fault monitoring described above If the micro controller or the watchdog detects a fault this is signaled via an AND gate to either or both of the transistors as relevant in series with the PTTs and the 6K8 resistors If there is a fault the relevant transistor s switch off and open circuit ...

Page 6: ...l of the SVMP2 8 connect audio and audio of both message connectors in parallel This will ensure that there is no audio fault reported on the unused channel Specification Storage capacity 2 messages each of up to 120 seconds Audio bandwidth 16kHz Audio Output level 0dBm Line Input sensitivity 0dBm 0 775V Power Supply Requirements 100mA 18 36 VDC externally regulated Width 249mm Height 41mm Depth 1...

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