A light two electric optical transceiver ruled out fault
(a), the first to see the light on the optical transceiver or optical module and twisted-pair ports indicator light is bright?
A, such as the light of the optical transceiver mouth (link) light is not bright, please determine whether fiber link of cross links?
B, such as A transceiver mouth (LINK) indicator light, the light of b transceiver (LINK) light is not bright, failure in A transceiver end: one possibility is that: A transceiver (TX) send light is bad, because b transceiver mouth (RX) receiving less than light signal; Another possibility is: A transceiver (TX) light mouth to send the fiber link has A problem (cable may be broken or light jump line).
C, twisted pair (FDX) light is not bright, please make sure twisted-pair cable connections between any wrong or faulty? Please use on and off the tester for testing but some transceiver twisted-pair indicator shall be such as fiber optic link after connect to on).
D, transceiver, there are two RJ45 port said: (TX1 / TX2) connected to the switch cable is a straight line; (TX1 or TX2) says the cable connection switches is cross the line.
E, and some hair side some MPR switch: said connection switches connecting line is straight line way; DTE switch: connection switches connecting line is crossing the line.
(2), fiber optic cable, fiber optic jumper has broken?
A and cable on-off testing: using laser flashlight, sunlight, light on one end of the cable joint or coupling according to light; In another first see if there is a visible light? If there is any visible light indicates cable did not break.
B, optical fiber connection on and off detection: use laser flashlight, the sun's rays on the one end of the fiber optic jumper, light; In another first see if there is a visible light? If there is any visible light shows that fiber optic jumper did not break.
(3), half/full duplex mode is wrong?
Some transceiver sides have FDX switch: full duplex; HDX switch: said half duplex.
(4), optical power meter instrument test
Optical transceiver or optical modules in normal circumstances the luminous power: multimode: - 10 db - 18 db between; 20 km single-mode: between the db -- 15 db - 8; Single mode: 60 km - 5 db - 12 db between; If in the luminous power of the optical transceiver in: - 30 db - 45 db, then you can judge the transceiver has a problem.
(a), the first to see the light on the optical transceiver or optical module and twisted-pair ports indicator light is bright?
A, such as the light of the optical transceiver mouth (link) light is not bright, please determine whether fiber link of cross links?
B, such as A transceiver mouth (LINK) indicator light, the light of b transceiver (LINK) light is not bright, failure in A transceiver end: one possibility is that: A transceiver (TX) send light is bad, because b transceiver mouth (RX) receiving less than light signal; Another possibility is: A transceiver (TX) light mouth to send the fiber link has A problem (cable may be broken or light jump line).
C, twisted pair (FDX) light is not bright, please make sure twisted-pair cable connections between any wrong or faulty? Please use on and off the tester for testing but some transceiver twisted-pair indicator shall be such as fiber optic link after connect to on).
D, transceiver, there are two RJ45 port said: (TX1 / TX2) connected to the switch cable is a straight line; (TX1 or TX2) says the cable connection switches is cross the line.
E, and some hair side some MPR switch: said connection switches connecting line is straight line way; DTE switch: connection switches connecting line is crossing the line.
(2), fiber optic cable, fiber optic jumper has broken?
A and cable on-off testing: using laser flashlight, sunlight, light on one end of the cable joint or coupling according to light; In another first see if there is a visible light? If there is any visible light indicates cable did not break.
B, optical fiber connection on and off detection: use laser flashlight, the sun's rays on the one end of the fiber optic jumper, light; In another first see if there is a visible light? If there is any visible light shows that fiber optic jumper did not break.
(3), half/full duplex mode is wrong?
Some transceiver sides have FDX switch: full duplex; HDX switch: said half duplex.
(4), optical power meter instrument test
Optical transceiver or optical modules in normal circumstances the luminous power: multimode: - 10 db - 18 db between; 20 km single-mode: between the db -- 15 db - 8; Single mode: 60 km - 5 db - 12 db between; If in the luminous power of the optical transceiver in: - 30 db - 45 db, then you can judge the transceiver has a problem.
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