Standalone Single Mode Fiber Media Converter Internal Power Adapter 80Km

FAMC-GSSI35S-80 & FAMC-GSSI53S-80, 10/100/1000M Auto-negotiation Fiber Media Converter Internal Power Adapter 80Km

Method for judging common fault of fiber media converter

There are many kinds of fiber media converters, but the methods for fault diagnosis are basically the same. In summary, main faults of fiber optic media converter are as follows:

1, Power indicator is not bright means power failure

2, Link indicator is not bright, the trouble may be as follows:

Check whether the optical fiber line is broken;

Check whether the loss of optical fiber line is too large and exceed the receiving range of the equipment;

(c) Check whether the fiber interface is properly connected ( the local TX is connected to the remote RX; the remote TX is connected to the local RX).

(d) Check whether the connection between fiber connector and device interface is in good condition or not, the fiber jumper matches the device interface or not, whether the device type matches the fiber type, and the device transmission range matches the distance or not.

3, Link indicator of circuit is not bright, the trouble may be as follows:

(a) Check whether the LAN cable is broken or not;

(b) Check whether the connection type matches: network cards and routers use cross wires, switches, hubs and other devices use through wires.

(c) Check whether the device transmission rate matches

4, network packet loss is serious

Possible failures are as follows:

(1) The electrical port of the fiber media converter does not match the interface of network device, or duplex mode of the two devices can not match.

(2) RJ-45 plug and twisted pair are with problem, need tester to confirm.

(3) Optical fiber jumper aligns with the device interface or not, fiber pigtail, fiber optic jumper and coupler type match or not.

5, Both ends of fiber media converter can not work after connection

(1) The TX and RX fiber is counter connected, change the position of these two fibers;

(2) The connection way between RJ45 interface and external equipment is incorrect (pay attention to thorough and cross connection).

Optical fiber interface (ferrule) do not match, this failure is mainly reflected on 100M media converter with fiber and electric mutual control function, such as pigtail with APC end face is connected to media converter with PC interface, it will not work normally, but there is no effect on media converter without mutual control function.

6, Connection and disconnection occur alternately

Possible reason is the attenuation of the optical path is too large. At this time, use optical power meter to measure the optical power at the receiving end. If the range difference of the received sensitivity is within 1-2dB, the optical path fault can be basically judged

switch connected with media converter may be with fault, change the switch to be PC, means two fiber media converter is directly connected to the PC, PING the two ends , if connection and disconnection have not occurred alternately, it can judge that the switch is with faulty.

(3) the media converter may be with faulty, connect the two ends of media converter to the PC (not through switch), if there is no problem with both ends after PING, transmit a large file (above 100M) from one end to the other end, to observe its speed, if it is slow (takes more than 15 minutes for file smaller than 200M), it can judge there is faulty with fiber optic media converter.

7, Crash (can not communicate) after working for a period of time and recover after restart.

This phenomenon is usually caused by switches. Switches will check all received data for CRC error and check length, the wrong packets will be discarded, and the correct packets will be forwarded. But some error packets can not be detected in CRC error detection and length calibration , such packets will not sent out in the forwarding process and will not be discarded, they will accumulate in the dynamic cache (buffer) and never be sent out until buffer accumulation is full, it will cause death for the switch. At this point, to restart the media converter or reset the switch can restore the communication to normal, so the user usually considers it is the problem of fiber media converter.

Media Converter Specification

Product Characteristics

1, Compliant with IEEE 802.3u, 100BASE-FX/TX, IEEE802.3 10BASE-T standards;

2, Complies with IEEE 802.1Q VLAN TAG, Spanning Tree standard;

3, Supports 10/100/1000M full duplex/half duplex auto-negotiation;

4, Support optical link-loss alarm;

5, Selectable four transmitting modes;

6, Supports hot-swappable;

7, Built in high efficiency SRAM for packet buffer, with 1K-entry lookup table and 4-way associative hash algorithm;

8, Automatic identification of MDI/MDI-X cross line;

9, Conform to safety code of FCC and 15 CLASS A and CE MARK.