User's Manual
Table Of Contents
- Installation and Operation Manual
- Contents
- Preface
- 1 Description
- 2 General Safety and Regulatory Information
- 3 Operation
- 4 Working with Base Stations from Your PC
- 4.1 PC Recommendations
- 4.2 Connecting Your PC to the Base Station
- 4.3 Working with the Web Interface
- 4.4 Basic Tasks
- 4.4.1 User Settings
- 4.4.2 Taking the Base Station Offline
- 4.4.3 Troubleshooting Alarms
- 4.4.4 Working with Configuration Files
- 4.4.5 Configuring Single Base Stations
- 4.4.6 Configuring Base Stations in a Channel Group
- 4.4.7 Setting Up Custom Alarms
- 4.4.8 Disabling the Front Panel Keypad
- 4.4.9 Preparing to Download Firmware
- 5 Installation
- 6 Maintenance
- 7 Troubleshooting
- 8 Replacing Modules
- Appendix A – Interface Pin Allocations
- Appendix B – Inter-Module Connections
- Appendix C – Identifying Front Panels
- Glossary
- Tait Software License Agreement
TB9400 Installation and Operation Manual 127
© Tait Limited December 2013 (Draft)
simulcast
The simultaneous broadcast by more than one transmitter of the same
signal on the same frequency.
SINAD Signal plus Noise and Distortion is a measure of signal quality. It is the ratio
of (signal + noise + distortion) to (noise + distortion). A SINAD of 12dB
corresponds to a signal-to-noise ratio of 4:1.
site 1. The base station equipment at a particular location. This includes power
supplies, transmitters, receivers, network interfaces and controllers.
2. The location of that equipment.
skew A measure used in centrally voted channel groups. If a voice stream arrives
at the central voter 20ms later than the first voice stream from the same SU,
it is said to have a skew of 20ms.
SMR Specialized Mobile Radio. A communications system used by police,
ambulances, taxis, trucks and other delivery vehicles.
SNMP Simple Network Management Protocol. A protocol used (for example) by
the trunking site controller to monitor the status of the channel group and
its members.
SSRC Synchronization source. The SSRC is a large number specified by the
trunking controller in its connection message. It uniquely identifies voice
streams sent from the master base station.
SU Subscriber Unit. The term used in the APCO P25 standard documents for
a two-way radio (generally a mobile or a portable radio) conforming to the
CAI specifications.
supplementary
service
A term used in the P25 standards. It refers to a group of services that is
additional to the basic service that a telecommunications network provides.
Examples include encryption and SU monitoring.
syslog collector A program that can receive, display, and log syslog messages from many
devices.
syslog protocol A standard protocol used for the transmission of event notification
messages across IP networks. TB9400 base stations can send messages
such as alarms to an IP address on the Tait P25 Network. The base station’s
logs store messages in the syslog format.