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Dekatron · 21st Oct 2012, 8:53 pm

AVO Valve Characteristics Meter = Mk I, II, III, IV, CT160, CT160A & VCM163
AVO Valve Tester = AVO Two Panel Valve Tester

If you look in the 23rd edition of the Valve Data Manual (VDM) you will see that the VCM163 has two columns for the roller selector and the other VCM types have their own two columns.

Up to the 18th VDM there are values for the AVO Two Panel Valve Tester, but from the 19th VDM those columns are gone and only the VCM types are mentioned.

So any of the VCM types can test any valve in the VDM's as long as there is a socket and you can set the voltages required for the testing. There are however some small differences since the measurement circuit is not identical which results in that some valves test differently due to for instance low Ra.

21st Oct 2012, 8:53 pm	#17
Dekatron Octode Join Date: May 2009 Location: Linkoping, Sweden Posts: 1,465	Re: Valve Testing AVO Valve Characteristics Meter = Mk I, II, III, IV, CT160, CT160A & VCM163 AVO Valve Tester = AVO Two Panel Valve Tester If you look in the 23rd edition of the Valve Data Manual (VDM) you will see that the VCM163 has two columns for the roller selector and the other VCM types have their own two columns. Up to the 18th VDM there are values for the AVO Two Panel Valve Tester, but from the 19th VDM those columns are gone and only the VCM types are mentioned. So any of the VCM types can test any valve in the VDM's as long as there is a socket and you can set the voltages required for the testing. There are however some small differences since the measurement circuit is not identical which results in that some valves test differently due to for instance low Ra. __________________ Martin, Sweden