
110 TimeProvider 100 User’s Guide
098-00106-000 Revision A – March, 2009
Chapter C
Antenna Kits and Accessories
Transient Eliminators
Symmetricom offers the 58539A transient eliminator for installations that require
antenna coaxial lead-in protection. The 58539A 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.
provides the transient
eliminator specifications.
GPS L1 Inline Amplifier
The GPS L1 Inline Amplifier (58529A) option boosts the signal from the antenna.
Use this amplifier on LMR-400 cables that are longer than 650 feet; it receives
power from the GPS radio receiver through the antenna coaxial cable connections.
provides mechanical and electrical specifications for the amplifier.
Table C-4. FCC-250B-90-1.5NFNF Specifications
Characteristic
Specification
Type Gas
Response Time
< 2 nanoseconds
Impedance
50
Insertion Loss
< 0.5dB @ 1,575 MHz
VSWR
< 1.2:1 @ 1,575 MHz
DC Breakdown Voltage
40 Volts
Dissipation Capacity
25,000 Amperes, impulse 8/20 µsec
Connector Type
N-Type
Temperature
–55
C to + 85
C
Relative Humidity
100% Non-immersed
Altitude
200 ft. (60 m) below sea level to 13 000 ft. (3962 m) above
sea level
Table C-5. GPS L1 Inline Amplifier Specifications
Characteristic
Specification
Mechanical
Connectors, (In/Out)
N-Type
Gain
20 dB
2 dB
Содержание TimeProvider 100
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Страница 24: ...24 TimeProvider 100 User s Guide 098 00106 000 Revision A March 2009 Chapter 1 Overview Functional Description ...
Страница 86: ...86 TimeProvider 100 User s Guide 098 00106 000 Revision A March 2009 Chapter 5 CLI Commands Set Commands ...
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