Symmetricom GPS Antenna, Руководство по установке

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Description of the Parts
GPS Antenna Sets
2.5. Grounding Kit
Lightning transients can also be conducted via the outer conductor of an coaxial cable. To
protect the GPS receiver unit from become damaged from this transients, a grounding kit
can be attached along the coaxial cable and grounded to a low impedance ground (e.g.
bus bar) to lead the transients to earth.
During the installation of the grounding kit, it must be taken care to avoid nicking of the
copper conductor and the grounding kit connection must be kept dry to prevent corrosion
which reduces effectiveness. The weather-proofing materials, which should be part of
each grounding kit, must be properly applied.
2.6. Technical Data
GPS Antenna
Color White
Weight
0.16 kg Nominal
RF Input Type N connector, female
Operating Temperature -40 degrees C. to +85 degrees C.
Humidity 95% relative Humidity
Frequency 1575.42 +/- 10.0 MHz (GPS L1)
Impedance 50 Ohms Nominal
DC Voltage 5 to 26 VDC
DC Current @ 5V 37 mA TYP, 45mA Max (50dB)
Wind Load
7.05 N @ 120 km/h
9.68 N @ 140 km/h
12.7 N @ 160 km/h
CABLE INSERTION LOSS (typically)
RG 58 0,75 dB/m @1575 MHz
RG 213 0,3333 dB/m @ 1575 MHz
LowLoss 0,1736 dB/m @ 1575 MHz
LCF ½ “ 0,094 dB/m @ 1575 MHz
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001023AD – July 2003