TranSystem 890200801 BRS/EBS Transceiver User Manual TRX 221 manual
TranSystem BRS/EBS Transceiver TRX 221 manual
User Manual rev

1 
B
BR
RS
S/
/E
EB
BS
S 
Transceiver 
Operation Manual  
Copyright 2008, TRANSYSTEM, INC. 
All rights reserved 
TRANSYSTEM INC.
No.1-2 Li-Hsin Rd.I Science-Based           
Industrial Park, Hsinchu, Taiwan                
Tel:+886-3-5780393 Fax:+886-3-5784111               
e-mail: sales@transystem.com.tw               
website: www.transystem.com.tw   

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TABLE  OF  CONTENTS 
Chapter 1.  General Information  4 
  1.1 Module Features and Specifications  4 
Chapter 2.  Installation  5 
  2.1 Step by Step Installation  5 
  2.2 Connection to the Power Inserter and Cable Modem  8 
 2.3 Waterproofing Connections  10 
Chapter 3.  Accessories  12 
 3.1 BRS/EBS Antenna  12 

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Chapter 1. General Information 
1.1 Module Features and Specifications 
Category  Parameter  Description 
RF frequency  2500 ~ 2624 MHz 
IF frequency  152 ~ 276 MHz 
Gain  30 ± 2dB 
0.3 dB/6 MHz 
Noise Figure  5.5 dB typ / 9.0 dB max 
Output 3rd Intercept  24 dBm 
PCS Rejection  > 90 dB 
2.3G WCS Rejection  > 90 dB 
Image Rejection 
(add gain)  > 80 dB 
IF Rejection  > 80 dB 
Downstream 
In-band Spurious  < -80 dBm 
IF Input  12 ~ 42 MHz 
RF Output  2657 ~ 2690 MHz 
Gain  24 ± 2 dB 
Output 1-dB Compression Point  +25 dBm typical 
Output Transmit Noise  -120 dBm/Hz typical 
-118 dBm/Hzm ax 
Output Spurious   
@+22 dBm Tx  output 
-60 dBc   
( in-band and out-band ) 
Output Power Blanking Threshold  -45 dBm @ IF input 
Upstream 
TX Switch Latency  < 1.2 micro second 
Phase Noise 
-84dBc/Hz @ 1KHz 
-88 dBc/Hz @ 10 KHz 
-96 dBc/Hz @ 100 KHz 
LO Leakage at RF / IF ports  -50 dBm Max. 
LO Frequency  Downstream : 2348 MHz 
Upstream : 297MHz,2348MHz 
General 
LO Stability  ± 10 KHz over temp. 
Other feature: 
1. lightning protection Ok 
2. surge protection Ok 
3. Transceiver sleep mode Ok 
Note: Typical value @25℃, unless otherwise specified. Technical specifications are 
subject to change without prior notice. 

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Chapter 2. Installation 
2.1 Step by Step Installation 
2.1.1 Mounting Bracket Assembly Suite 
The following hardwares are suggested for mounting the Transceiver to 
the pole. A set of mounting bracket, one L type screw. Please contact TSI 
sales department for this accessory.   

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2.1.2 Step by Step Installation 
Step 1 – Attach sequence   
Left to right: Bracket , Mounting screw. 
  Step 2 – How to Attach 
The concave of Bracket 2 is for holding onto the pole. 
Step 3 – Tighten the bracket 

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   2.2 Connection to the Power Inserter and Cable Modem 
 Connections to the Tranceiver are shown in diagram 2.2. Please note: 
① The power inserter normally has 3 ports: 
DC  Connect to wall adapter with RG-59 cable 
ANT  Connect to the Transeiver 
TV  Connect to Cable modem 
   VERY IMPORTANT NOTICE! 
  a. The power inserter should be correctly connected, or the Transeiver 
will not operate. 
   b. Ensure that all wires and cables are hooked up before plugging into 
the AC adapter/power supply (i.e. you must hook up the power supply 
last).  
② After connection, the F connector of Transceiver must be sealed with an 
asphalt sealing tape. (For details, please refer to Section 2.3 Waterproofing 
Connections) 
    Diagram 2.2: Connection to Cable modem & Power Inserter   

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2.3 Waterproofing Connections 
Water-proofing is very important during installation of Transceiver. Please 
use the included water-proof asphalt tape to seal off the F-connector as 
shown below: 
① After you plug in the coaxial cable into the F-connector, use the included 
water-proofing asphalt tape to seal off the F-connector from the bottom (i.e. 
the part close to Transceiver). Note that the tape must wrap up all the thread 
of the F-connector. 
② The wrap up of the tape must be tight and sturdy. Each wrap-around must 
cover at least 50% width of the previous wrap-around. 

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③ The total width of the wrap-around is about 6cm, which corresponds to 7 
to 8 rounds of tapes. 
* Warning: If you do not follow the above procedure, the Transceiver could 
become malfunctioning due to water leakage.` 

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Chapter 3 Accessories 
3.1 BRS/EBS Antenna 
TSI is proud to offer a complete line of 2.5GHz antennas specifically 
designed to satisfy your subscribers. Below are the series: 
  12dBi Corner Reflector    15dBi Spotbeam 
 17 dBi Viper