GPS S14W, S14WI User Manual
S14WI Splitter for Wireless
Infrastructure
1 of 9
Product User Manual
Features
•
• Active or Passive Options Available
••
•
• Optional Antenna Current Monitor
• •
and Alarm
• Optional Antenna DC Bias Select
• Pole-mount Environmental Housing
Available (IEC 529 level IP55)
• Surge Protection Available
(Tested to EN61000-4-5)
Description
Designed to eliminate the cost of multiple antennas and long cable runs in wireless base
stations applications, the S14WI can satisfy the demanding, high reliability requirements of the
wireless infrastructure market. The GPS Source S14WI is a high performance GPS signal
splitter that can be configured to monitor the GPS antenna current and provide an alarm
indication if the antenna is not operating according to spec. The S14WI also features an
optional antenna DC bias “Pick-&-Choose” circuit which allows for the active antenna DC input
to be applied to any or all of the RF outputs. With this option, one DC voltage will be chosen to
power the antenna while the other inputs will be switched to DC loads. If the selected DC bias
input should fail, the DC bias will be automatically switched to another DC input so as to ensure
an uninterrupted supply to the active antenna. The S14WI may be configured as a passive or
an active device, giving the network engineer the flexibility to specify the device gain and portto-port isolation. The S14WI may also be ordered with surge protection on all five ports and in a
sealed housing sufficient for many years of operation in external environments.
Your source for quality GNSS Networking (719) 561-9520
5/25/2007
Document number: 060-FSA-ABQ-AAS-AGZ
Solutions and Design Services, Now!
Rev. 001
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Table of Contents
Description ............................................................................................................................... 1
Functional Block Diagram ................................................................................................ 3
Operational Description..................................................................................................... 3
RF Signal Processing System ..................................................................................................... 3
Passive Option: ....................................................................................................................... 4
Amplified Option:................................................................................................................... 4
Amplified – High Isolation Option:........................................................................................ 4
Termination of Unused Ports:................................................................................................. 4
Bias-T’s:.................................................................................................................................. 4
Antenna DC Bias Select System................................................................................................. 5
Active GPS Antenna Monitoring System................................................................................... 5
Surge Arrestor System................................................................................................................ 6
Connecting the S14WI ........................................................................................................ 6
Performance Specifications............................................................................................ 7
Certifications and Approvals .......................................................................................... 7
Part Number ............................................................................................................................. 8
Mechanical ............................................................................................................................... 9
Your source for quality GNSS Networking (719) 561-9520
5/25/2007
Document number: 060-FSA-ABQ-AAS-AGZ
Solutions and Design Services, Now!
Rev. 001
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Functional Block Diagram
Figure 1 below illustrates the functionality of the GPS Source S14WI GPS Splitter. The S14WI
consists of an RF Signal Processing System (illustrated in Blue), a DC Bias Select System
(illustrated in Red), an Active GPS Antenna Monitoring System (illustrated in Green), and a
Surge Arrestor System.
RF In,
DC Out
Active GPS Antenna
Monitoring System
Pwr.
Supply
RF Choke
DC Blk.
S14WI GPS Signal Splitter
Active
or
Passive
Figure 1 S14WI Functional Block Diagram
DC Switching Circuit
DC Blk.
DC Blk.
DC Blk.
DC Blk.
RF Choke
RF Choke
RF Choke
RF Choke
RF Out,
DC In
RF Out,
DC In
RF Out,
DC In
RF Out,
DC In
Operational Description
RF Signal Processing System
The RF signal processing system consists fundamentally of three classical Wilkinson Splitter
elements that divide the RF signal from the antenna input evenly between four RF output ports.
There are several options that are available concerning the RF Signal Processing System.
These options are:
Your source for quality GNSS Networking (719) 561-9520
5/25/2007
Document number: 060-FSA-ABQ-AAS-AGZ
Solutions and Design Services, Now!
Rev. 001
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