Doepfer SK2000 Midi Masterkeyboard (device no longer available) - Manual (Page 29)

User's Guide SK2000 Page 29
Appendix C : Notes about velocity
The special chip used inside the SK2000 to poll the key-contacts uses the time difference required by the
switch-contact to derive the velocity response (or dynamics-value). The relationship between measured
time difference and velocity is one of inverse proportion, i.e.doubling the time causes the velocity-response
to be halved. However, this is not the response one is used to from a piano. In the case of a non-adjusted
velocity-response most musicians feel that the high values start too early and that there is insufficient
resolution in the lower range. In the SK2000 this is compensated using a non-linear scanning algorithm.
Velocity-response is to some extent also dependant upon the expander being used. There are significant
differences in the velocity behaviour of different expanders. The scanning algorithm included with the
SK2000 generally permits sufficiently good adjustment of the velocity-response characteristics. Pay
attention that some expanders also include various velocity-response curves of their own.
The XG sound card used in the SK2000 has available a parameter to adjust the velocity effect to the sound.
Appendix D : Pin Assignment of the Sockets
1 2
Power Supply
1 = +9V DC / 800mA
stabilized (!!!)
2 = GND
Foot Controller
Foot Switch 2 (Soft pedal)
Foot Switch 1 (Sustain)