[sdiy] Looking for info on freq. counters (SDIY-compatible ;)

[harry]

I don't like a frequency counter for synth calibration... they take too long
to update at low frequencies if you want good accuracy,

I use a scope (for rough measurements) and a Korg DT-1 Digital Tuner...
I use the scope to keep the digital tuner "honest" and use a precision
voltage reference I whipped up with some hand matched 1% (to 0.1%)
resistors. Rotary switch lets you jump through eight octaves, enough for
most VCO's.

H^) harry's .02

Microtonal wrote:

> I use an HP 5314A frequency counter.  You can pick these up on ebay for
> $25-$40.  Look for a Hewlett Packard 5314A Universal Counter.  These are
> fairly easy to use and even include operating instructions on a plate on the
> bottom of the unit.  Resolution goes down to 0.1 Hertz.  I checked mine side
> by side with a new $200 Fluke multimeter and it was every bit as accurate.
> As a bonus, if you're working in just intonation, this unit has two inputs
> so that you can compare the ratio between two sources.  Trying to tune a
> perfect fifth, 3/2?  Simple, just tune the first oscilllator, then tune the
> second to a ratio of 1.50000.
>
> John Loffink
> microtonal at worldnet.att.net
>
> ----- Original Message -----
> From: "Synthusiast" <synthusiast at gmx.net>
> To: "Synth DIY" <synth-diy at dropmix.xs4all.nl>
> Sent: Tuesday, September 04, 2001 6:10 PM
> Subject: [sdiy] Looking for info on freq. counters (SDIY-compatible ;)
>
> > Hi list,
> >
> > I'm looking around for a, preferrably low-budget, frequency counter,
> > suitable for synth DIY stuff like calibrating VCO's, VCF's, etc. Now I
> > wondered what resolution I'd need for that and what brands and types there
> > are to choose from and what they'll cost of course. Any info would be
> > appreciated.
> >
> > TIA,
> > Martijn
> >