HV Oscilloscope probe (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 22 Aug 2007 06:50:36 +0200
From: Herwig Roscher <herwig.roscher@xxxxxx>
To: tesla@xxxxxxxxxx
Subject: HV Oscilloscope probe


Hi coilers,

For measurements of HV and RF I have acquired a Modular Oscilloscope 
Probe TT-HV 250.

Attenuation 100, Input impedance 100 MOhm/4 pF, Bandwidth 300 MHz, 
Risetime 1.2 ns

Maximum input voltage  2500 Vp - but only up to 1 MHz. Above this 
frequency the permitted voltage is specified to fall logarithmically 
down to 6 v(!!) at 300 MHz.

Could somebody please explain the reason for this decline, which I 
have not seen at "standard" scope probes?


Bye		Herwig

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Greed is the root of all evil !
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