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Old 05-30-2018, 05:46 PM
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Electronic M Electronic M is offline
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Can I make my own probes for a B&K 415?

I bought a B&K 415 (together with a 1077) a few years ago and did not get any probes with them. A while back I recapped the 415 and I'd like to try my hand at learning TV alignment. Can these probes be made? If so what all is supposed to be in them?

I have at least two spare mike connectors that mate with the front panel connectors*...I also have the probe end of a B&K demodulator probe (I bought it years before the 415 to rob the rest of the cable for an old AM radio alignment gen that uses the same front panel mike connectors as the 415).

*I also have two cables that fit the front panel connectors one ends in clip leads the other in an RCA jack (I don't want to modify these since I use them with another alignment gen and an audio amp).
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Old 05-30-2018, 07:06 PM
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I replaced the mic jacks on my 415 with BNCs. It makes it much easier to work with since I can use off the shelf cables and probes.
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Old 05-31-2018, 07:37 AM
kvflyer kvflyer is offline
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Quote:
Originally Posted by andy View Post
I replaced the mic jacks on my 415 with BNCs. It makes it much easier to work with since I can use off the shelf cables and probes.
That is a very practical way to handle this. Unless one is hard set on "originality", BNC connectors do make it a lot easier.
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Old 05-31-2018, 07:55 AM
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N2IXK N2IXK is offline
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Another vote for installing BNCs and going with standard probes.

BNC connectors fit the standard .375 holes for the mic connectors, so no drilling needed.

Last edited by N2IXK; 05-31-2018 at 11:30 AM.
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Old 05-31-2018, 10:11 AM
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This B&K 415 is a TV alignment sweep/marker generator...Are oscilloscope probes even valid to use with it for any purpose?

The BNC switch would be relatively easy as I have several loose female BNC jacks in my parts bin...
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Old 05-31-2018, 02:30 PM
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Kevin Kuehn Kevin Kuehn is offline
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If you don't already have them you can download the schematic and operators manual here.

https://elektrotanya.com/bk-precisio.../download.html

The manual shows all the cables the unit came with. No reason you can't make your own using some RG58 coax. Agree with changing mic connectors to BNC, and I believe the hole size is the same 3/8"? You don't even need a demodulator probe if you pick off the signal after the TV's detector diode. Can't think of any reason you'd use a scope probe unless you want the attenuation. I like using a BNC to mini grabbers cable to connect in circuit. BNC to BNC for hooking to scope.

Last edited by Kevin Kuehn; 05-31-2018 at 02:36 PM.
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