Telenetics MIU9.6FPD Manual Do Utilizador

Página de 22
 
MIU9.6FPD Installation, Operation & Diagnostics 
April 25, 1998 
Page 14
 
 
Test 3:  Received Signal Level 
 
 
Set Dip Switch 1 OFF (TxA = -10dBm) and Dip Switch 3 
OFF (RxA = -43dBm). 
 
 
CD will be ON. 
 
 
Run a test message at TxD and verify that the same message 
is received at RxD with no data errors. 
 
Test 4:  Repeat Test 3 for various RTS/CTS delay times and with 
soft carrier ON and OFF. 
 
 
(b)  LOCAL DIGITAL LOOPBACK – 4/Wire Network (Figure 4)   
 
On the modem under test, connect TxD to RxD 
 
Switch 1 = ON (TxA = 0dBm) 
Switch 3 = ON (RxA = -33dBm) 
Switch 4 = OFF (RTS/CTS = 35ms) 
Switch 5 = ON   (RTS/CTS = 35ms) 
Switch 6 = ON (Constant Carrier mode). 
Switch 7 = OFF (4-Wire) 
Switch 8 = ON (Line Termination = 600 ohms) 
Switch 9 = ON (Soft Carrier = ON) 
 
Transmit a test message from a remote modem and confirm that the 
same message is received back at RxD on the remote modem with no 
data errors.