RG59 Tester

[smcctv 0]

Hi,

 

Im looking to purchase a RG59 tester as theres been a few occasions where some cables do not work, but others work from the same batch.

If there is any other ways to test both bnc connections work, please advise me.

 

Any suggestions would be great

 

Thanks

[jakesoundels 0]

This one works great:

 

[the toss 0]

99.99% of RG59 cable problems are with the BNC terminations. The two most common ones are-

Strands of the braid not trimmed to length & are shorting out to the centre pin.

The centre pin not "locked in" when inserted into the outer body before crimping & so not long enough to make connection.

Determining which end is faulty is near impossible without a TDR. Just take a guess ( and usually be wrong). For basic testing I just use a multimeter & s/c termination at the far end.

[paddylast 0]

It is important to keep an eye on the quality of rg59 that you are using. There is cable available which cant carry video signal due to the poor copper coating on the centre core. Testing with a pulse bar generator and scope (the old way is best) If you have a scope look at the video signal you have coming from the camera and if terminated at 75 ohms at the scope end you will exoect to stt your 1 volt p to p. But look at the sync pulse which should have nice square edges and be the lower .3 of a volt peak to peak.