User`s manual

Signamax 065-1600 series Managed Media Converter
Publication date: October, 2005
Revision 1.0
163
4-5. Diagnostics
Function name:
Diagnostics
Function description:
Diagnostics function provides a set of basic system diagnosis. It let users
know that whether the system is health or needs to be fixed. The basic system
check includes UART test, DRAM test, Flash test, Temperature detection,
Case detection and Fan RPM detection.
Fig. 4-50
Function name:
Loopback Test
Function description:
In the Loopback Test function, there are two different loopback tests. One is
Internal Loopback Test and the other is External Loopback Test. The former
test function will not send the test signal outside the Signamax 065-1600
series converter box. The test signal only wraps around in the Signamax 065-
1600 series converter box. As to the latter test function, it will send the test
signal to its link partner. If you do not have them connected to active network
devices, i.e. the ports are link down, Signamax 065-1600 series will report the
port numbers failed. If they all are ok, it just shows OK.
Note: Whatever you choose Internal Loopback Test or External Loopback Test,
these two functions will interfere with the normal system working, and all
packets in sending and receiving also will stop temporarily.