User Manual
Table Of Contents
- Foreword
- PSG Limited Equipment Warranty for U.S. And Canadian Markets
- PSG Limited Equipment Warranty for NonU.S. and Non-Canadian Markets
- Introduction 1
- System Description 2
- The Wireless Messaging System Overview
- FLEX, ReFLEX and InFLEXion Messaging Protocol Overview
- RF-B! Transmitter Controller Functional Description
- RF-Baton! Transmitter Controller Specifications
- Preinstallation 3
- Installation 4
- Operation 5
- Maintenance 6
- Troubleshooting
- Data Path Diagnostics
- GPS Diagnostics
- Removal and Installation
- Assigning an RF-B! Transmitter Controller to a Multicast Group
- Remote Software Download from Choreographer! Network Manager
- Local Software Download Using the Front Panel
- Parameter Database Updating
- Abbreviations and Acronyms A
- Connector Pinouts B
- FIPS Action Commands and Parameter IDs C
- Alarms and Error Messages D
- Traces E
Maintenance RF-Baton! Transmitter Controller Installation and Operation
6-30 6880497G01-B June 1999
The Motorola GPS receiver automatically corrects a bad almanac if it can acquire satellite
signal(s). Nominal acquisition time for a Motorola GPS receiver with a blank almanac is 15
minutes in addition to the regular GPS initialization time (15 minutes).
In addition to the a 211 command, the validity of the almanac can also be determined from the
a 208 command output. If the receiver status value is odd (that is. the least significant bit is
set), the almanac is not valid and is being rebuilt. A notification the almanac is being rebuilt is
printed in addition to the almanac status.
The Trimble GPS receiver almanac information can not be displayed using the a 211
command.
<E_SASM_FREERUN_TIMEOUT>
The RF-B! transmitter controller is configurable and can operate for 96 continuous minutes
without GPS lock. After the 96 minutes have expired, the <E_SASM_FREERUN_TIMEOUT>
error is logged in the station error log and the simulcast manager returns to state zero. If GPS
lock is regained after the RF-B! transmitter controller has timed out, the simulcast manager
reinitializes and enables paging when complete.
The occurrence of the <E_SASM_FREERUN_TIMEOUT> error can indicate GPS receiver
problems external to the RF-B! transmitter controller. Examine the GPS antenna installation
(see Chapter 3, "Preinstallation", paragraph, "Antenna Considerations" and reference the
GT/UT Oncore User’s Guide).