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DocNo.DCP0001328  RnB  10/10/03  rev6 

Rear Panel features

 

 

 

 

Name 

Function / Description 

 

Prog 1 

Programming port for module 1 

 

Prog 2 

Programming port for module 2 

 

Message 

 

The 24 VDC only 
needs to be supplied 
on one of the message 
connectors. 

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 

Triggers 

 

 

Options 

Sets the end of line resistors on the trigger.  

(see page 7). 

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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