Doepfer DIY Synth do-it-yourself analog synthesizer - Manual (Page 15)

User's Guide page 15 DIY Synth Kit
JP6: LFO, ADSR and Slew Limiter connections
JP6 contains some ADSR, LFO and Slew limiter terminals.
pin header top view ribbon cable
Function Explanation Remark / Recommendation
LFO LED LFO LED display Usually connected to a dual color LED.
The second terminal of the LED is
connected to GND (e.g. the following
wire).
GND e.g. for the second terminal of the LFO
LED
ADSR SW SLOW ADSR range switch low
position Usually connected to the terminal of a
1-0-1 toggle switch
ADSR SW COMM ADSR range switch common
terminal Usually connected to the center terminal
of a 1-0-1 toggle switch
ADSR SW
MEDIUM ADSR range switch medium
position Usually connected to the terminal of a
1-0-1 toggle switch
GND
GND
GND
SLEW IN
Input of the slew limiter Usually connected to the slew source
(e.g. CV for VCO) via a 1M...5M log
potentiometer for slew control
SLEW OUT Output of the slew limiter Can be connected e.g. to one of VCO CV
inputs to have available the portamento
function for this input
Remark: If a longer maximal slew time is wanted the value of the slew capacitor C21 (220nF)
can be increased, e.g. by soldering another capacitor in parallel to C21. But we have to point
out that in this case the warranty is void. As C21 is connected between SLEW IN and GND
the additional capacitor can be placed even outside the DIY SYNTH board.
If no slew limiter is required the slew limiter unit can be used as a non-inverting buffer. For
this the smoothing capacitor C21 should be removed.