Symmetricom TimeProvider 5000 User Manual

470 TimeProvider 5000 User’s Guide 098-00028-000 Revision F – May, 2012
Appendix C Installing the GPS Antenna
Antenna Kits and Accessories
Table C-3 lists the available accessories for GPS antennas with internal LNA.
Transient Eliminators
Symmetricom offers the FCC-250B-90-1.5NFNF Transient Eliminator for installations
that require antenna coaxial lead-in protection. The FCC-250B- 90-1.5NFNF
Transient Eliminator passes DC power and frequencies in the 1.5 GHz range with
non-downconverter L1 GPS antennas. In most installations, the transient eliminator
mounts near the point at which the antenna lead enters the facility. Table C-4
provides the transient eliminator specifications.
Element Right Hand Circular
Carrier L1 (1545.42 MHz)
Bandwidth 10 MHz
Noise Figure < 2.5 dB
Output Impedance 50 
Gain
Marine 26
Marine 40
Marine 50
26.5 dB  3 dB
40 dB minimum
48 dB minimum
Table C-3. 26 dB L1 GPS Antenna Accessory Kit
Part Number Description
112-43400-00-3 Transient Eliminator, 90 Volts, 1.5 GHz, N-Type
12010210-000-0 Bracket Assembly, Antenna Mount Right Angle
12813080-000-0 Crimper Kit, LMR-400 (crimp tool, 2150 tape, LMR preptool,
10 each crimp N-type connectors)
Table C-4. FCC-250B-90-1.5NFNF Specifications
Characteristic Specification
Type Gas
Response Time < 2 nanoseconds
Impedance 50 
Table C-2. Specifications for GPS Antennas with Internal LNA (Continued)
Characteristic Specification

Symmetricom TimeProvider 5000 Specifications

General

Brand	Symmetricom
Model	TimeProvider 5000
Category	Server
Language	English