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(719) 561-9520

 

Solutions and Design Services, Now!

 

 

5/25/2007

 

       

Document number: 060-FSA-ABQ-AAS-AGZ

 

Rev.  001 

S14WI Splitter for Wireless 

Infrastructure 

 

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 port-
to-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.   

Summary of Contents for S14W

Page 1: ...gnal 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...

Page 2: ...al 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 ...

Page 3: ...or System DC Switching Circuit S14WI GPS Signal Splitter RF In DC Out RF Out DC In RF Out DC In RF Out DC In RF Out DC In RF Choke RF Choke RF Choke RF Choke RF Choke DC Blk DC Blk DC Blk DC Blk DC Blk Pwr Supply Active or Passive Active GPS Antenna Monitoring System Figure 1 S14WI Functional Block Diagram Operational Description RF Signal Processing System The RF signal processing system consists...

Page 4: ...t port gain of the splitter is approximately 21dB Amplified High Isolation Option In the Amplified High Isolation Configuration resistive 50 Ohm signal attenuators are added in the RF output paths to provide additional isolation between each RF port This configuration may be chosen if it is possible for spurious emissions from one GPS receiver on one port of the splitter to cause interference with...

Page 5: ...uitry will be automatically switched through an RF choke to 200Ohm DC loads The DC voltages may be applied to any or all of the RF outputs however the DC Bias Select circuit will always select the DC voltage on the lowest numbered RF port that has a DC voltage applied to power the S14WI and the application s antenna If the chosen DC input were to be removed or fail the DC Bias Select circuit will ...

Page 6: ...14WI will periodically every 60 seconds attempt to re connect DC power to the antenna If the antenna failure condition persists the S14WI will re enter the fault condition repeating this cycle until the fault condition is removed Surge Arrestor System The S14WI includes standard Gas Discharge Tubes and Transient Voltage Suppressors on each RF input output Furthermore provisions for high current gr...

Page 7: ...18 20 mA Ant Thru Current 3 Max source DC current through device 250 mA IOC Range for Open Circuit Threshold 15 75 Antenna Monitor 4 ISC Range for Short Circuit Threshold 5 100 180 mA Surge Protection 8 20us 5 KA Notes 1 Note that for proper RF performance the S14WI must have all RF ports terminated into a 50Ohm coaxial cable system or a 50Ohm load 2 Custom gain option available 3 Maximum current ...

Page 8: ...k Gain Option A Amplified Axx Custom Gain Blank Passive H Hi Isolation Pick Choose Option PC Add Pick Choose Blank Std Config Antenna Monitor Option AM Add Ant Monitor Blank Std Config Connector Options NM N Male NF N Female SM SMA Male SF SMA Female TM TNC Male TF TNC Female BM BNC Male BF BNC Female SB SMB Jack Female SC SMC Jack Female MX MCX Jack Female For help in creating the part number to ...

Page 9: ...9 of 9 Your source for quality GNSS Networking 719 561 9520 Solutions and Design Services Now 5 25 2007 Document number 060 FSA ABQ AAS AGZ Rev 001 Mechanical ...

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