Emax

ssm octal sample and hold ic is damaged

ssm2300 exchange for a smp08 by analog devices its a pin for pin replacement and has a better slew rate

the pitch wheel the modulation wheel the volume slider and data slider are cv sources the ssm2300 samples these and send the digital data to the cpu which then processes the info and sends it to the smm2300 that out puts the digital control data to a cv analog output for controlling the filter or vca or panning

you need to check the manual as i dont have it in front of me but therte are several ssm2300 octal sample and hold multiplexer ic 

you need to check the manual for the 1 that samples the voltages from the controllers
  ----- Original Message ----- 
  From: zrennaya 
  To: emax@yahoogroups.com 
  Sent: Friday, March 02, 2012 11:48 AM
  Subject: [emax] Emax pedal input and control voltages


    

  Hi everybody!

  I have another issue with my Emax, I've tried to use a CV signal to alter the filter cutoff -since there's only a sinewave internal LFO. The manual says the pedal input receives standard CV signals but here's what it does for me: even if the pedal input is not assigned to anything in preset definition, when I send a CV signal, the display jumps around different submenus, on the main page it jumps around presets and when the cursor is on some parameter to adjust, it changes the values, so basically it does the same job as the DATA slider. 

  The other thing is, this is a MIDI controllable CV source, so MIDI CC values 0->127 means -5V -> +5V control voltage and even if I try to recalibrate the pedal input, when the cursor is over a parameter value, when I turn the MIDI knob, there's no increment between cc values 0-51, then some weird increment jumps between 52-59, then no increment between 60-124, then major jump between 124-127.
  Consequently, when I assign the pedal input to the filter fc, the cutoff frequency is jumping around in the same fashion, while the submenus jump around on the display at the same time.
  Could anyone please give me some advice, or knows wether I'm doing something wrong or it's the emax's fault? Thanks a milion!!



  

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