Nissan 200SX - SR20DET with VEMS - Östersund, Sweden
Contents:
MembersPage/Larsa/VEMSpictures
Tachometer requires lower than 50% duty
Orginal tachometer has a dutycycle of 33/255 and doesnt like signals other than that.
- Since 1.1.77 (see GenBoard/UnderDevelopment/FirmwareChanges ) very low (1-5) tach_div value adjusts duty, (than freq is nonadjustable, same as if the default 16 was used). You can try 4 for 4/32 (or 3 for 3/32 or 5 for 5/32) duty
- is that common for Nissan 200SX or most Nissan ?
oscilloscope picture of tach signal [1000rpm 2ms/div]
[1000rpm 10ms/div]
[3000rpm 2ms/div]
