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FC-12 (Fm9) - expression pedal calibration limited range

izappa

izappa

New Member
PROBLEM - Calibrating an expression pedal on the FC-12 won't sweep beyond ~20% of the range.

Using FM9 and FC-12. FM9 firmware 4.0
Fractal Expression Pedal connected to Pedal 1 on FC-12
This is a used FC-12 purchased through Reverb
Within the last 2 weeks, I reset my FM9 (also purchased used) as it felt like I kept chasing old configuration issues (it helped immensely)
  • On Fm-9, I go into FC Controllers/Onboard Switches
  • Page to Remote menu
  • Select Pedal 1, Calibration
  • Continually sweep the pedal fully heel-to-toe
  • The FM9 UI shows it's only sweeping 0-~20% of the range
  • I plugged it into FC-12 Pedal 2 with the same results (see graphic below)
If I take the same pedal and calibrate it as Pedal 1 on the FM9, it sweeps fully heel-to-toe. Thoughts?

FM9 display for FC12 expression pedal calibration.jpg
 
Greg Ferguson

Greg Ferguson

Axe-Master
What type of cable is it? TS or TRS? What firmware is in the FC? Unplug it and plug it back in and watch the display. Is it a Mk I or Mk II FC?
 
izappa

izappa

New Member
Greg Ferguson said:
What type of cable is it? TS or TRS? What firmware is in the FC? Unplug it and plug it back in and watch the display. Is it a Mk I or Mk II FC?
Click to expand...
FC-12, V1.10, Mk I.
Yes, TRS cable (I verified again) and it all works perfectly if used directly on the FM9. It is an older Fractal cable I bought when I purchased my original FX8 and Fractal expression pedal. I'm going to clean the pot with a Q-tip sprayed with CRC, and I'll try a different cable. Like I said, it works like a charm on the FM9.
 
unix-guy

unix-guy

Legend!
Does the FC-12 work ok otherwise?

If the same cable and pedal work with the FM9 something seems suspect.

Maybe try powering the FC-12 with a different XLR cable?
 
mr_fender

mr_fender

Axe-Master
With such a limited response, I'd wager you've got a bad connection somewhere. Try cleaning the pedal jack contacts on the FC-12 and expression pedal with contact cleaner or isopropyl alcohol. I'd try updating your FC-12 to FW 1.12 as well.
 
izappa

izappa

New Member
Thank you all. I updated the FW per your recommendations, cleaned the input jack, and I used the same cable. All is working now.
 
unix-guy

unix-guy

Legend!
darrenw5094 said:
Ah cool. I just bought 2 expensive Mission pedals and was disappointed with the results
Click to expand...
To be clear, the issue it fixes was that after calibration the pedals would not reach 100% when used.

They would get to something like 98.4%.

If you have a very similar issue to the OP then maybe that's different. I'm not sure why updating FW fixed his issue.
 
darrenw5094

darrenw5094

Certified Bug Hunter
unix-guy said:
To be clear, the issue it fixes was that after calibration the pedals would not reach 100% when used.

They would get to something like 98.4%.

If you have a very similar issue to the OP then maybe that's different. I'm not sure why updating FW fixed his issue.
Click to expand...
Mine goes to 96% or so, pretty useless when using it for the whammy pitch block
 
mr_fender

mr_fender

Axe-Master
Make sure you calibrate in the right menu as well. FC unit expression pedals should be calibrated in the FC Config menu and not the I/O menu.
 
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