Teledesign Systems Inc TS4000GL Manuel D’Utilisation

 
A BER (Bit Error Rate) test is used to determine how good a radio environment is 
for transmitting data.  The BER result tells the percentage of bits that are 

corrupted.  A BER of 3.0 x 10-4 means that 3 out of 10,000 (104) bits are 
corrupted.  
 
The longer a BER test runs the more accurate the result.  To get an accurate 
result a BER test should be run until at least 100 errors have been received.  
This provides a 90% confidence level in the BER value.  However, in a relatively 
error free environment this can take a very long time.  An alternative is to run the 
BER test until at least 10 errors have been received which provides a 68% 
confidence level. 
 
AirTest can be setup to run a BER test.  To run a BER test, the TS4000s must be 
configured with packet operation disabled.  This is because when the TS4000 is 
setup for packet operation it discards corrupted packets and does not send them 
out the serial port. 
 
1)  Attach two TS4000s each to a PC serial port. 

2)  Configure AirTest for serial port settings (baud rate, data bits and parity) that 

match the attached TS4000’s settings (Setup Manu – Port Setup). 

3)   Select and start one of the automated tests.  To select a test, use the Test 

Setup command from the Setup menu.  Use the on-line help for details about 
the different tests. 

4)   Observe the results by click on the Show Status button on the Comm Port 

window.