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  #1  
Old 05-04-2018, 08:26 AM
Tellyrescue Tellyrescue is offline
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Tek 453 oscilloscope help

I have a tek 453 scope that has no test leads and I am trying to take some wave forms off a 50 tube B&W chassis.
What is the best way to connect the scope? It has a BNC connector which I made a couple of probe designs off the Internet but I don't think they work. I have also read a Coyne repair book from the 50s which says to use a 8 to 10k resistor in series with the probe and a .005 mfd cap connected to the ground lead.
I'm not sure if this will work as the tek might only work with its own Probe.
I also have a B&K 1450 scope but information on this unit it zero and it looks like it may need repairs.
Thankyou
Will.
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  #2  
Old 05-04-2018, 11:30 AM
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N2IXK N2IXK is offline
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Save yourself a lot of trouble, and just buy some proper scope probes. Switchable 10:1/1:1 probes can be found for really cheap these days:

https://www.amazon.com/Signstek-2PCS.../dp/B00ENF272C
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Old 05-04-2018, 12:05 PM
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Celt Celt is offline
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Agreed....just save yerself the headache and buy some!
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Old 05-04-2018, 10:10 PM
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andy andy is offline
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I wouldn't bother with a 1X / 10X switchable probe unless you plan to measure very low level signals. A 10x probe is all you need for most common tasks. It's particularly important when working around high voltages since it will help protect the scope from damage. Also, 1X probes load down the circuit, and tend to have poor bandwidth.

You have a top quality scope, don't handicap it with a bad quality probe.
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