288 SyncServer 600 Series User’s Guide 098-00720-000 Revision D1 – February, 2018
Appendix B Specifications and Factory Defaults
GNSS Antenna Kits Specifications
GPS/GLONASS/BeiDou 1:4 Active Splitter Specifications
The GPS/GLONASS/BeiDou 1:4 active splitter option splits the signal from the
antenna. Table B-27 provides mechanical and electrical specifications for the high
isolation active splitter.
This L band frequency, RoHS compliant 4:1 active splitter makes it possible to use a
single GPS referencing antenna and cable arrangement for multiple
synchronization systems. The antenna DC bias select circuit allows for the active
antenna DC input to be applied to any or all RF outputs. One DC voltage will be
chosen to power the antenna while other inputs will be switched to DC loads. If the
selected DC bias input should fail, the DC bias will automatically switch to another
DC input to ensure an uninterrupted supply to the active antenna.
Complete specifications for this Microsemi Model 58536A GPS Splitter can be
found on the Microsemi web site.
Table B-28. GPS L1 1:4 Active Splitter Specifications
Characteristic Specification
Number of Output Ports 4
Input/output impedance 50 ohms
Frequency Range 1 GHz to 2 GHz
Noise Figure 2 dB max
Port-to-port isolation 30 - 40 dB
DC power +3.3 to +12 V DC
Operating current 18 to 20 mA
Pass through current 250 mA
Group delay, L1 5 ns
RF connectors Female N-type
RoHS 6/6 Compliant
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