Historical hardware setup subpage of InputTrigger/AudiTrigger
For v3.0 .. v3.2:
- easy: connect the pullup of secondary LM1815 output to cam-HALL signal instead of direct 5V. Ask for help if this is not clear.
For v3.3 shipped in 2005:
- GenBoard/Manual/InputTriggerHardWare/ReplaceC is effected, removing the 220nF from C103 is necessary (or or replacing with 1nF new value)
- added 1uF cap in parallel with C40 (eg. piggyback on top, or replace) for longer peak hold time (might be essential depending on crankhome-VR noise, and does not hurt)
- 12..15k pullup to +5V for crankhome VR signal (a good place to mount a 1206 size resistor is between board-pad and 5V at primary LM1815 pin8)
- alternatively 10k pulldown to -8V
- or 1k pulldown to GND (0V) and adaptive hysteresis disabled, that is LM1815 pin5=+5V
For v3.3 shipped after 2006: - done at assembly if requested in shop order note
- added 1uF cap in parallel with C40 (eg. piggyback on top, or replace) for longer peak hold time (might be essential depending on crankhome-VR noise, and does not hurt)
- 12..15k pullup to +5V for crankhome VR signal (a good place to mount a 1206 size resistor is between board-pad and 5V at primary LM1815 pin8)