[Techtoolslist] O-scope Z-Channel Question

[Martin White]

I made up a little black box with three pots on it for all my vector  
work.

1k pot on each of the X,Y,Z allows for complete control and should  
work nicely for your Z problem because that's the scope i started off  
with before moving onto using a dedicated HP display for my vector  
stuff.

Oh, yes, you do need the inverter too for the 475, 4069 is it? I  
forget, it was just one cmos chip though.

Martin.


Guddler's Domain
http://www.guddler.co.uk


On 10 Feb 2007, at 18:09, Matt Rossiter wrote:


> I'm using a Tektronix 475 Oscilloscope and, of course, I use XY  

> mode for

> testing to see if the X and Y signals look good on the screen.   

> There is

> an external Z axis channel in the back, but I've never gotten it

> completely to work.  Someone once told me that I need to use an  

> inverter

> to invert the signal into the probe - which sort of works, but I  

> still see

> the vector retrace lines.  Is it possible to completely blank out  

> the Z

> signals so that the picture looks the way it's supposed to?

>

> Thanks

>

> Matt

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