I just installed my new audio expander on the meta module (v2.11) I checked the system menu telling me that “audio/cv expander connected”
Now that I am testing it for the first time I have to recognize that only the outputs work and only for audio, means Input 7-12 no function, Output 9-16 only audio, no CV.
Have I missed a point of configuration somewhere or might it be a broken one..?
The expander has no notion of audio or CV, it just sends out signals (DC-coupled). What are you seeing that tells you audio works but not CV? Feel free to share a patch file.
Doing the hardware test will rule out any patch issues. Go to Settings > System > Check Hardware.
Each of the output jacks 9-16 on the Audio Expander will have a different frequency sine wave, starting at 60Hz (jack 9) up to 7.6kHz (jack 16). Each sine wave should be about 17Vpp (roughly -8.5V to +8.5V)
If you patch a 1V/oct sequencer output (or any CV signal) into input jacks 7-12, the frequency of the sine wave on the corresponding output jack will change:
Input 7 modulates Output 9,
Input 8 modulates Output 10,
Input 9 modulates Output 11,
etc..
The inputs should be calibrated to 1V/oct so 1.00V will play a certain frequency and 2.00V will play one octave higher. If the calibration is off, you could do a re-calibration, but first just see if you’re getting signals.
You can can check against the internal (non-expander) audio ins and outs, they should be doing the same thing on the Check Hardware page, except the frequencies start at 40Hz.
Thank you for your detailed answer!!
I checked the expander with the following settings:
CV TEST
Inputs are routed to modulate a VCO, Outputs are sending LFOs.
An external LFO works on Inputs 1-6 of the MM but not on Inputs 7-12 on the expander.
Same with the outputs, an external VCO gets modulated by Outputs 1-8, nothing on Outputs 9-16.
AUDIO TEST
Inputs are routed to a scope, outputs are sending a sawtooth wave.
Same as above inputs 1-6 receive an external audio signal, no input on 7-12.
All Outputs are working perfect, everything fine on 1-16.
I will do the Hardware Check on the MM later this evening and tell you what has happened!
CV TEST.vcv (2.3 KB)
CV TEST.yml (11.9 KB)
AUDIO TEST.vcv (2.0 KB)
AUDIO TEST.yml (5.0 KB)
OK, thanks. Both those patches perform normally on my system. It’s odd that the audio test would generate output on the Outs for you, but not the CV test, since both generate a signal.
It could be a calibration issue: corrupted calibration values can cause the outputs and inputs to be scaled to the point that they’re essentially zero.
Also, it could be a cable issue, if it’s not securely attached. Or the unit could have a fault.
Try the hardware test when you get a chance. If that fails, then we’ll do a re-calibration (it’s fast and easy).
The good news are: it is working!!
I did the Hardware check and got signal on the outputs of my expander.
Then I checked the input voltages in “CV JACK CALIBRATION” and got input on jack 1-12.
Then I reloaded my CV TEST and AUDIO TEST patches and now they work perfect.
The bad news are: I absolutely don’t know what has happened!!
The problem was solved by just opening the hardware check..??
I hope whatever has happened will not “undo” one day (one day after guarantee…:))
The expander is working fine - problem kind of solved!
Again I would like to thank you spending your time on such a detailed answer - great support!
And thank you for developing this great instrument, can’t wait for the button expander…
OK, great! Hmm, I don’t know, maybe the cable is loose? Or could be some issue with multiple versions of the patch file, who knows… but glad it works
Hi,
Same problem as you. After “CV JACK CALIBRATION”, inputs give values in to work but not outputs…I will send it back to seller…
guy