Re: Telequipment D75 scope.
I have both the V and H cal modules, but have never seen a circuit or manual for either one. There is very little inside them, should be easy to "reverse engineer", but then you need both the equipment and method to initially calibrate them (Old question, who calibrates the calibrators?).
Argus, I have a normaliser originally used with a very early TQ S31, and have built a copy in an "attenuator type" of box for such as the D75, but clearly I need a method of setting the parallel capacitance. Your simple method assumes the "normaliser" scope you work from is correct. But since the input R and C are usually given either on the front panel or in the manual, is there a simple method of setting my normaliser correctly? The "R" is easy, but how to set/measure the "C" value?
Les.
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