TE2J2

Techedge 2J2 wideband system

The new 2J2 wideband improves on the incredibly popular 2J1 system.  Despite the low cost the 2J2 wideband offers functionality only usually found on much more expensive systems.  The base package includes the a Bosch LSU4.2 7200 sensor and all cables.  You may like to consider the LA1 or LX1 display for use with the 2J2.
  • Accuracy within +/- 0.1 AFR over AFR 11 to 17.
  • Configurable differential wideband 0-5 Volt output for use with your ECU or 3rd party display.
  • 2 serial port sockets for connection to your PC, data-logger or gauge
  • Simulated narrowband output.
  • 2 analogue 0 to 5 Volt inputs sampled at up to 40/sec.
  • RPM input from Tacho or ECU.
  • PULSE input from speed sensor
  • Uses new Bosch LSU 4.2 7200 sensor.
  • Auto-cal button calibration with sensor in free-air.
  • 10.5 to 19.5 Volt DC operation.
  • Small size and low weight, the controller is roughly the size of a pack of playing cards.

The various I/O connections are described below. The connection diagram are to the right, along with wire colours to aid you in connecting the 2J2 to your vehicle. Just remember not to short out any of the unused wires against battery voltage or GND.

On the top of the case (with the sticker) can be found ..

  • Status LED - Displays information about sensor function, and indicates errors and alarm conditions.

  • CAL Button - When held down, initiates the Auto-cal sequence (indicated by a series of sharp flashes on the status LED) .

 

  • Power Cable - is normally wired to the vehicle's power via a high current (5 Amp) in-line fuse and then to a switched power point. Power is normally made available when the ignition is switched to ON. We discourage temporary installations using a cigarette lighter because the sensors should always be powered when exposed to exhaust gasses.

  • Serial sockets - these sockets provides ground, RS232 communications, and current limited power for a Tech Edge display such as LX1 or LA1.
             

Wideband output

The wideband output voltage can be configured using the config utility, the default setup is shown in the graph below.

Simulated narrowband output

Just like the wideband output the simulated narrowband output can be configured to suit your ECU.