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Why in RF attenuator center cond'ctor nd outer cond in short

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bharathidasan.j

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in RF attenuator we cheked for continuity between center and outer conductor using a multimeter.. surprisingly it is showing short between them... why is it so?... can u pls explain....
 

Re: Why in RF attenuator center cond'ctor nd outer cond in s

In case your attenuator is not burned you have selected wrong measuring range. Resistances of open ended attenuator should be as follows:
3dB 150Ω
6dB 83Ω
10dB 61Ω
20dB 51Ω
30dB 50Ω
 

Re: Why in RF attenuator center cond'ctor nd outer cond in s

ya as you told the values are exactly matching.... but only thing it is showing (beeps) for short... why is it so?....

across the ports 60ohms and end to end 50ohms...
 

Re: Why in RF attenuator center cond'ctor nd outer cond in s

Try to read multimeter manual first and you will find why it beeps. Do you know what is continuity tester?
 

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