Solar provides an integrated, scalable infrastructure for a single or multi-channel, multi-base station, wide area Simulcast Private Mobile Radio (PMR) system.The system consists of a number of Solar Network Interfaces (NI) and Traffic Managers (TM). The Network Interfaces are all the same; they are fully duplex; and be used to connect either the remote stations or the central console to the IP infrastructure. The Traffic Manager is at the heart of the system and provides Voice routing, Redundancy and Supervision.
Specifications
| Audio I/O | 4 wire duplex -24 to 0dBm, 300Hz to 3.2KHz from Console or Base Station +/- 0.5dB flatness across band |
| IP Interface | 10 Base/T RJ45 - UDP/IP |
| Environment | 8 Binary I/O |
| GPS 1PPS | 1PPS Delivered to Solar via RS-422 or TTL |
Environmental & Physical
| Temperature | Operating: -10 to 60C Storage: -25 to 85C |
| Power Supply | 100-240 VAC 50-60Hz 10-36VDC, 32-72VDC |
| Max Power Rating | TM-50W inc GPS NI-15W inc GPS & I/O |
| Physical Dim. | 19" rack, 30.5cm deep |
| Weight | TM-3.5Kg, NI-3.3Kg |
| CE Mark | EN55022/24 & 61000-3-2/3 |
| FCC Approval | 15B |
Base Station & Channel Capacity
The number of Base Stations which can be accommodated in a network is 32. A TM can control up to 16 Channels. The effectiveness and efficiency of a system is dependant upon the data throughput capability of the network.
Voting
Receiver selection or receiver voting is condusted in the digital domain by the TM susing signal information passed down from the Station Interface. Due to the noise free nature of the digital link no further signal evaluation is necessary at the TM which means that the IP data packets contain both the received audio and the signal level/quality information together so voter risetime is the absolute minimum. Solar can accommodate either a ramping voltage or a set of tones as a source of RSSI signal, or Noise voting.
Synchronization
Synchronization operates within+/-2us compared with other base stations for both talk in and talk out directions. Switching the "vote" mid transaction will only cause a disturbance of the input within the specified figure.
Monitoring & Control
System configuration and status is available via a PC running the Engineering Terminal software supplied, and is connected either via RS232 or over the IP network. Standards based management is also available via the SNMP Monitoring & Control option on the Traffic Manager allowing connection and sending of traps to a higher level management system. A closed contract summary alarm output is also provided on the Central NI for connection to external alarm systems.
Solar-Sync
Solar facilitates the instation of a simulcast PMR system
using a packet switched network for inter site connectivity. Each Base Station transmitter audio input is synchronized automatically which prives ease of initial set up and no onlgoing adjustment or maintenance after commissioning. RSSI and Noise Voting features are built into the system, as are monitor I/O's to facilitate remote supervision of the local environment and supervision features that enable the user at the Central Network to determine the status of that unit, the station unit and remote environment.
Solar facilitates the instation of a simulcast PMR system
using a packet switched network for inter site connectivity. Each Base Station transmitter audio input is synchronized automatically which prives ease of initial set up and no onlgoing adjustment or maintenance after commissioning. RSSI and Noise Voting features are built into the system, as are monitor I/O's to facilitate remote supervision of the local environment and supervision features that enable the user at the Central Network to determine the status of that unit, the station unit and remote environment. | • | Provides low bandwidth (64Kbps minimum), low latency (65ms minimum) simulcast infrastructure over a customer supplied IP network. |  |
| • | Scalable, Dynamic system architecture allows Channel and Site reconfiguration and network expansion on the fly (zero downtime). | |
| • | Network Interfaces at each site facilitate the synchronization of the audio input to Base Station transmitters - automatically compensating for network delay. | |
| • | Passes or sends uncompressed audio across IP network, maintaining voice quality and allowing signalling tones to be passed transparently. | |
| • | The Traffic Manager contains a Voter Comparitor which uses information from the Base Station receiver in the selection process. | |
| • | Minimal set up procedures. Requires no regular adjustment or maintenance after commissioning. | |
| • | System requires a Global Synchronization signal (eg 1 PPS input from a GPS receiver) at each site. | |
| • | Station Interfaces have 8 control and 8 monitor I/O's to facilitate remote supervision of the local environment. | |
| • | Traffic Manager is available with Multi-channel support, SNMP monitor and control and redundant configuration options. |
|
