InfraStructure

VOTER 30450 RSSI

The 30450 Voter is a stand-alone RSSI voter and Line Interface Unit with a capacity for 16 Lines. The Voter provides the best signal selection (Voting) and transmitter steering when used in a multi-station PMR System. The voter forms the Interface between the control room (Console Dispatcher equipment) and the lines or links used to connect to remote Base Station sites.

• Capacity available in 1x16 or 2x6 line.
• Votes on out of band Received Signal Strength Indicator tone.
• Receiver mounted RSSI tone generator PCB is available separately.
• Voter algorithm configuration includes “Hold” and Change on “Step-size”.
• Global RTN Inhibit facility
• Talk-through Re-broadcast facility.
• Transmitter key steering – Selection configurable
• Engineer/Emergency handset connector
• Engineer Terminal PC application software for configuration and interrogation included.
• VOIP Interface available.
  
  

Quasi-Sync (SOLAR)
In two-way radio systems Quasi-Sync, also often referred to as Simulcast, refers to the practice of transmitting a signal (usually voice) to a group of mobile units across a wide geographic area via multiple transmitters. Quasi-Sync allows multiple RF transmitters using a single identical frequency to provide this extended coverage. This is especially important in applications that require wide-area coverage while still preserving limited radio spectrum bandwidth or channels. SOLAR is an integrated system that can provide Quasi-Sync capability using a user supplied IP Network to connect all system elements.

The SOLAR module features include:

• Digital interconnection links (either internet or Intranet)
• Synchronization of input to Base Station Transmitters, automatically compensating for link delay
• Can incorporate a voter, which automatically selects the best Base Station Receiver
• A 1PPS input from a GPS receiver to synchronise each site
• 8 controls and 8 monitor I/Os to facilitate remote supervision of the local environment.
• Supervision features enable the user at the Central Interface Unit to determine the status of that Unit, the Station Unit
  and Environment.

The COSMOS family, which is an analogue version of SOLAR and used in non-IP applications, is also available upon request.

Sat-Sync 7

Also used with Quasi-Sync systems, the 30674 is a high stability frequency generator useful to synchronise base station transmitters. The Sat-Sync 7 uses GPS derived 1PPS as an accurate and stable source to deliver 2 channels, each with 2 outputs (eg. 10MHz & CTSS).