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How to DIY 同軸數碼線

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1#
kk_ho 發表於 2007-5-17 00:25:25 | 顯示全部樓層

Re: How to DIY 同軸數碼線

Assume un-balance cable and normal coaxial wire.

1. Understanding the characteristic impedance

2. Understanding the impedance of your gear, some machine is 50ohm, some machine is 75ohm

3. Identify the connector type, BNC, RCA

4. Get a cable spec from the supplier

5. Cutting the cable according to the best "wave length"

6. Use recommened cable tools to assemble the cable and the plug. (not soldering)

7. Testing the "impedance"

END
KK.
2#
kk_ho 發表於 2007-5-18 21:03:28 | 顯示全部樓層
"Wavelength for dedicated length "
--> which show in the datasheet of your cable.

Simpe method to testing the impedance, please join our cable course later.

KK



[uote="TWM"]KK sir,

long time no see. How are you? Looks like you put on weight. Must be happy happy.

Can you elaborate Point 5. Cutting the cable according to the best "wave length" and Point 7. Testing the "impedance"? How to do them?

What is your comment on using Cat5 cable for digital RCA connection?[/quote]
3#
kk_ho 發表於 2007-5-18 21:12:18 | 顯示全部樓層
Characteristic impedance and VSWR

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4#
kk_ho 發表於 2007-5-18 22:40:27 | 顯示全部樓層
Assemble instruction from Canare Cable.

Need dedicated tools!!!

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5#
kk_ho 發表於 2007-5-19 17:56:16 | 顯示全部樓層
MSIU,

Do you want we open a class about this ?

Please advise what kind of cable you are interest.

For 75ohm impedance cable, it is more important for "matching impedance"

1. Coaxial cable for Digital transmission (Analog)
2. Components (YUV)
3. VGA (RGB, HV)
4. Antenna Cable

Please comment
KK.Ho
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