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2.1 Indicator LED and Calibration button hookup:
To monitor LC-1 status, connect the red wire (Anode) of the included LED to the calibration wire (black) of
the LC-1 and connect the black wire (Cathode) of the LED to the ground wire of the momentary switch.
a. Note: The included LED will fit the following hole size and panel thickness: a 5/32” (0.155” -
0.158”) hole size and a panel thickness of 28–16gauge (0.031” - 0.062”).
b. Optionally, any 1.2V - 2.2V (1mA- 30mA) LED may be used. A typical LED has 2 wires called
Anode and Cathode. The Cathode side is typically the shorter of the 2 wires (refer to the
component data sheet of the selected device for details).
Pressing the push-button or connecting it quickly to ground starts a free air calibration process in
the LC-1. MAKE SURE THE SENSOR IS IN FREE AIR FOR THAT. See chapter 4 for details.
2.2 Connecting the LC-1 to an external analog AFR display
2.3 Connecting the LC-1 to an ECU or data logger
All Innovate MTS devices like the LC-1 with dual serial ports should have their system grounds
connected together to a common ground point. If an external data logger or ECU is to be fed by
an MTS device, the MTS ground should be located at or near the ECU or data logger’s input
signal ground. Some ECU’s or data loggers have differential inputs. A differential input has a
separate ground INPUT for each sensor input. This ground input MUST be connected also to
ground as shown in these diagrams. If one analog output of the LC-1 is used to drive an AFR
display and the other output is used to connect to an ECU, the AFR display ground should be
connected to the ECU ground.
