WJ Communications Inc. SR320 Manual Do Utilizador

  
 
 

 
If you want to create your own software to communicate with and control stationary  readers, see the 
document “Intelleflex Middleware Application Programming Interface” for communication with the reader 
using SLRRP based protocol over the Ethernet port.   
 

 
Parameter 

Specification 

Operating Frequency 

US ISM band (902-928 MHz); frequency-hopping 

Protocol support 

EPCGlobal Class 1 Gen 2, Intelleflex Class 3 

RF Transmit Power 

1 Watt 

Tag Read Range 

6 meters [20 feet] typical for C1G2, up to 100 m for C3 

Antenna ports 

Up to 4 pairs of (Transmit/Receive); RP-TNC connectors 

Antenna Specifications 

cable attenuation higher than 1 dB 
Linear polarization antenna gain less than 7 dBil 

Reader modes 

Host initiation mode or autonomous operation based on timer or external 
trigger 

Host interface 

Serial control over RS232, or TCP/IP over Ethernet; SLRRP based API 

Operating temperature 

0 to 50

°C  (32 to 122°F) 

Storage temperature 

-20 to 70

°C  (-4 to 158°F) 

Power supply 

24 VDC, 2.7 A 

FCC certification 

FCC part 15 unlicensed operation [PENDING AT TIME OF WRITING] 

 
 

 
Communication between tags and readers at UHF frequencies is a complex phenomenon depending on 
details of the environment surrounding the tags and reader(s) as well as the equipment being used.  Some 
environmental aspects (such as tag placement and orientation) may be controllable by the user; others (such 
as reflections of the RF radiation by ambient objects) are generally not.  Careful installation and testing, 
and development and adherence to appropriate operating procedures, are indispensable for successful 
implementation of RFID.  Intelleflex. makes no representation or warrantee that any specific configuration 
of RFID tags and readers will provide any given performance characteristics.   

Any use of this equipment with antennas or cabling installed outdoors or otherwise exposed to inclement 
weather must avoid proximity with power lines or other high-voltage conductors, and provide for proper 
grounding and lightning arresting devices to protect the equipment user in the event of a lightning strike.  
See National Electrical Code (NEC) requirements articles 725, 800, and 810 for further information.    
 

Copyright© 2006 by Intelleflex Corp.  Subject to change without notice.  This information is provided “as is,” and 
Intelleflex makes no claims of fit for purposes intended, merchantability or other.  All trademarks, service marks, trade 
names and logos are used in good faith and remain the property of their rightful owners.

  

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