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MS2V3.0 Hardware Guide Spark mode = "Basic Trigger" Trigger angle/offset = 10 BTDC as a starting point, fine tune with a timing light. Ignition capture = "Falling edge" Spark output = "Going High" Spark A output pin = "D14" Dwell type = "Fixed duty" Dwell duty = "50%" 6.4 GM HEI7 The original "High Energy Ignition" (HEI) distributors used the 4 pin module from the early 1970s is fine in the The 'Ref' signal from the module to the Megasquirt gives rpm and engine position information. The 'Est' signal from Megasquirt to the module controls the advance when running. The 'Bypass' signal from Megasquirt to the module allows the module to beneficially control its own advance P = Positive from VR sensor N = Negative from VR sensor E = Electronic spark timing (EST) from Megasquirt IGN R = Reference (REF) to Megasquirt Tach in B = Bypass from Megasquirt bypass output (SPR3 shown) Set the mainboard as per section 5.2.4 Make the following modifications: Add 1k 1/8W resistor from (-) of D14 to the right hand side of the resistor below. Add 1k 1/8W resistor from (-) of D16 to the right hand side of the resistor below. Jumper from (-) of D14 to IGN Jumper from (-) of D16 to SPR3 (or your chosen pin)
(c) 2014-5 James Murray 2015-07-09 Page 109/201 | |||