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WIGGLING 'LITE' IN GUEST MODE

Probs with HertzDonut
MUFF WIGGLER Forum Index -> The Harvestman  
Author Probs with HertzDonut
Scaff
I just read the manual again. My HD is not responding in any mode on the attenuated FM-in on the primary VCO. I have the new firmware. Strange!
nrdvrgr
You need to push and hold one of the buttons down a few seconds to enable this... can´t remember which one right now, but try them all, you will find it.
stk
Primary / Mod waveform selectors, when held, each activate FM input for their respective oscillator. After doing do, pressing them toggles between linear and exponential fm.

(why fm is not enabled on power-up is beyond me, surely would've made more sense..?)
Scaff
Thx, so there is no problem! But it doesn´t sound like thru-zero with an external vco.
nanotone
stk wrote:
(why fm is not enabled on power-up is beyond me, surely would've made more sense..?)

This feature was coming with the firmware upgrade. very frustrating
nanotone
Scaff wrote:
...But it doesn´t sound like thru-zero with an external vco.

Das hast du mir aber eben anderst erzählt confused

Sorry for German. we're not worthy
Scaff
nanotone wrote:
Scaff wrote:
...But it doesn´t sound like thru-zero with an external vco.

Das hast du mir aber eben anderst erzählt confused

Sorry for German. we're not worthy


Try that with the Modulator and it will work!
stk
nanotone wrote:
stk wrote:
(why fm is not enabled on power-up is beyond me, surely would've made more sense..?)

This feature was coming with the firmware upgrade. very frustrating


Upgrade? hyper
Yohda
Quote:
why fm is not enabled on power-up is beyond me, surely would've made more sense..?

It's because when FM is enabled there is a little jitter.

The osc become less stable.
Oldstench
Scaff wrote:
Thx, so there is no problem! But it doesn´t sound like thru-zero with an external vco.


You need to press the button again once FM is active to switch to linear thru-zero mode.
nrdvrgr
Through zero... heard that expression so many times so, here goes - please explain what that really means soundwise?
berfmurret
This is my only quibble with the HD. Not all of the jacks are available in all modes.. I know the reasoning is fine and valid. It used to bother me a LOT when I was learning the module.. It still irks me a little.
Yohda
Quote:
Through zero... heard that expression so many times so, here goes - please explain what that really means soundwise?


In short : more modulation amount, so more harmonics.

From the ZO manual :

Quote:
How much linear modulation is possible?
A conventional VCO is capable of 100% linear modulation. If its running at 1KHz,
you can take it up much higher, but you can only take it down to zero. (Most
VCOs restrict the range of the linear modulation input, so you can't even realize
100%). At 1KHz, it can move downward a maximum of -1KHz. At 90Hz, it can
only move -90Hz always 100% maximum. This is not the case with the ZO. No
matter what the operating frequency, you can modulate several thousand percent
because the ZO can go through zero and into negative frequencies. Just what
negative frequencies are is beyond the scope of this instruction sheet, but if
your"e interested, the Cyndustries website has several links to some good
explanations.
Here's the nut--
The range of modulation that is possible has to do with the bias level and the
highest voltage available in the module. Op-amps saturate at about 13.5 volts on
a 15 volt supply (10.5 on a 12V supply). So, if you are using HIGH bias on the
switch (1 volt), then you can modulate 13.5 / 1 = 1,350%. If you are using LOW
bias, then you can modulate 13.5 / 0.2 = 6,750%!!! As you can see, the
modulation range is the ratio between your idle setting and red-line (Will this car
analogy never stop??!). At zero bias the modulation range is infinite, but that
makes my brain hurt so I promise never to mention it again.
nrdvrgr
something wonderful


Thanks, cleared that up...
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