Installation and Operation Manual
Chapter
6 Monitoring and Diagnostics
ACE-3105, ACE-3205 Ver. 5.2
Testing the Unit
6-75
ACE-3205 – RAD Data Communications
Diagnostics> System> Self Test Results
Host memory > (Pass)
TOD access > (Pass)
Packet memory > (Pass)
SEMTECH access > (Pass)
Parameter memory > (Pass)
Station clock access
Flash memory > (Pass)
E1/T1 framer access > (Pass)
>
ESC-previous menu; !–main menu; &-exit
Figure
6-60. Self Test Results
Performing Physical Loopback Tests
ACE-3105, ACE-3205 supports two types of user-defined physical loopback
operations on ATM ports:
•
Internal loopback – returns the transmitted data at the physical layer to the
receive path. The internal physical loopback includes a configurable timeout
mechanism that ends the loopback operation after expiry of the user-defined
period.
•
External loopback – returns the received data at the physical layer to the
transmit path.
PHY
ATM
PHY
ATM
User Port
Network Port
Data path in internal loopback mode
Figure
6-61. Data Path in Internal Loopback Mode
PHY
ATM
PHY
ATM
User Port
Network Port
Figure
6-62. Data Path in External Loopback Mode
