background image

- 6 - 

After  connecting  the 
network,  the  images  of 
several  optical  contact 
points appear one or two 
horizontal bright traces. 

Power 

supply 

AC 

ripple 

interference  because  of  the  bad 
earth  of  equipment  or  power 
supply. 

Check grounding situation of the equipment, 
make  sure  that  every  equipment  in  the  line 
has  been  reliably  grounding  and  the 
grounding resistance must be

4Ω. 

After  connecting  the 
network,  the  received 
optical  power  of  the 
optical  contact  point  is 
unstable  and  changes 
continuously. 

The 

output RF signal is also 
unstable. 

But 

the 

detected  optical  output 
power  of  the  optical 
transmitter is normal. 

The  optical  fiber  connector  types 
do  not  match,  maybe  the  APC 
type connect to PC type.   
The  optical  fiber  connector  or 
adapter may be polluted seriously 
or the adapter has been damaged. 

1. Check the type of optical fiber connector
and  adopt  the  APC  type  optical  fiber 
connector to ensure the normal transmission 
of optical signal.   
2. Clean the polluted optical fiber connector
or  adapter.  Specific  operation  methods  see 
“Clean  and  maintenance  method  of  the 
optical fiber connector”.   
3. Replace the damaged adapter.

9. Clean and maintenance method of the optical fiber active connector

In many times, we consider the decline of the optical power as the equipment faults, but

actually  it  may  be  caused  by  that  the  optical  fiber  connector  was  polluted  by  dust  or  dirt. 

Inspect  the  fiber  connector,  component,  or  bulkhead  with  a  fiberscope.  If  the  connector  is 

dirty, clean it with a cleaning technique following these steps: 

1.

Carefully pull off the optical fiber active connector from the adapter. The optical fiber

active connector should not aim at the human body or the naked eyes to avoid accidental

injury.

2.

Wash carefully with good quality lens wiping paper or medical degrease alcohol cotton.

If use the medical degrease alcohol cotton, still need to wait 1~2 minutes after wash, let

the connector surface dry in the air.

3.

The cleaned optical fiber active connector should be connected to optical power meter to

measure output optical power to affirm whether it has been cleaned up.

4.

When connect the cleaned optical fiber active connector back to adapter, should notice to

make the force appropriate to avoid the ceramic tube in the adapter crack.

5.

If the output optical power is not normal after cleaning, should pull off the adapter and

clean the other connector. If the optical power still low after cleaning, the adapter may be

polluted, clean it. (Note: Be carefully when pull off the adapter to avoid hurting inside

fiber.

)

6.

Use  the  dedicated  compressed  air  or  degrease  alcohol  cotton  bar  to  clean  the  adapter.

When use the compressed air, the muzzle of the compressed air tank should aims at the

ceramic  tube  of  the  adapter,  clean  the  ceramic  tube  with  compressed  air.  When  use

degrease alcohol cotton bar, carefully insert the alcohol cotton bar into the ceramic tube

to clean. The insert direction should be consistent, otherwise can not reach ideal cleaning

effect.

Summary of Contents for XC8602ME-B

Page 1: ...XC8602ME B Optical Receiver Manual Optical Receiver Specification ...

Page 2: ...al according to the measuring method of GY T 194 2003 Specifications and methods of measurement on optical node used in CATV systems and tested in the following conditions Testing conditions Forward path optical receiver part with 10km standard optical fiber passive optical attenuator and standard optical transmitter composed the testing link Set 59 PAL D analog TV channel signal at range of 45 87...

Page 3: ... CTB dB 65 C CSO dB 60 RF Parameters Frequency Range MHz 45 862 Flatness in Band dB 0 75 Rated Output Level dBμV 108 Max Output Level dBμV 116 7 2dBm optical power received Output Return Loss dB 16 Output Impedance Ω 75 EQ Range dB 0 20 ATT Range dB 0 20 Generic Characteristic Power Voltage V A AC 150 265 V B AC 35 90 V Operating Temperature 40 60 Consumption VA 18 Dimension mm 220 L 205 W 65 H No...

Page 4: ...g port or external optional 4 Working indicator 5 Optical power display tube 6 Power interface 7 Switching power supply 8 Power cord in 9 AC60V power pass inserter 10 Output 20dB test port 11 Output 1 12 FZ110 or FP204 13 AC60V feed 14 AC60V power pass inserter 15 Output 2 16 Network management interface 17 Fiber in 18 Network cable in ...

Page 5: ...an be direct connected and change the computer IP to 192 168 1 XXX XXX is any number from 0 to 255 except 168 start upper computer network management software then search the device and log in 3 Right click device icon and choose modify the device IP 4 Enter new IP address gateway and subnet mask 5 Click modify then exit it is done There will show new IP address and gateway on operational logbook ...

Page 6: ... signal is too low 1 Check the received optical power of the optical contact point and make appropriate adjustments to make it in the specified range 2 Improve the optical received power of the optical contact point by cleaning the optical fiber connector or adapter etc methods Specific operation methods see Clean and maintenance method of the optical fiber connector 3 Check the RF input signal le...

Page 7: ...nnector component or bulkhead with a fiberscope If the connector is dirty clean it with a cleaning technique following these steps 1 Carefully pull off the optical fiber active connector from the adapter The optical fiber active connector should not aim at the human body or the naked eyes to avoid accidental injury 2 Wash carefully with good quality lens wiping paper or medical degrease alcohol co...

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