Chapter 5 Troubleshooting
If you meet some problem during installing and employing, please deal with
them by the following proposals. If there is no answering for the question, please
contact with distributors for technical support.
1
．
PWR indicator is down
Answering: PWR line is not connected or there is any error in the PS system.
2
．
UTP LNK indicator is down
Answering: Please check the twisted pairs is good or damaged and the network
device that is connected to the interface converter is running well or not.
Please check connection type is matching or not: if you close auto-sensing and
auto-identifying function of twisted pairs cable MDI/MDIX, then please use MDI
type when connected to HUB or switch; please use MDIX type when connected to
router or networking card.
Please check the fault-pass function is Enable or Disable. If it is Enable, it can
make Ethernet port to close.
3
．
E1 line indicator alarm
If there is E1 line alarm, please find the fault reason according to explaining of
front panel indicator.
4
．
Test way of E1 line bit error
Configure remote loop-back and local loop-back through switch of front panel.
Please use loop-back function carefully. And avoid to bringing Ethernet broadcast
storm.
5
．
No alarm show, LNK is light, ACT indicator keep winking. But the connection is
not working.
Please check work status of Ethernet port and networking device matching or not,
according to switch of front panel.
6
．
Networking frame loss rate is very high
possible reasons
：
The duplex mode is not matching of converter and Ethernet TX ports;
Cabling connection false;
E1 interface impedance type is not matching;
There is some frame loss, because the rate of Ping is beyond transmission rate of
E1. You can increase parameter of timeout.
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