Hello Dieter

Am 07.04.2016 um 11:49 schrieb yahoo@... [Doepfer_a100]:

> I had a discussion with other module manufacturers during the Superbooth and
> we think about an expansion of the eurorack standard that includes also specs like minimum trigger length (1 ms or 5ms are under
> discussion) and minimum gate/trigger levels. Some manufacturers voted for 3V (because they use internal controllers with 3.3V
> supplies and want to keep the circuits as simple as possible) but I'd recommend at least 5V even if this requires additional level
> shifters (for some of our modules these level shifters are 30% or more of the circuit, e.g. A-160-1/2, A-161).

I'd vote for a threshold level as small as possible.
The highest trigger voltages I know are 12V. To my experience even
retriggering due to transient overshoots does not happen with such high
trigger signals (on the usual cricuits) with a threshold down to 1 Volt.
Looking at the 3.3V argument I'd vote for a threshold level of 2V too.
About the minimum length I vote for 5ms, because it makes software based
debouncing much easier.

Florian