Ballenger Motorsports AFR500v2 Manual Rev 1.4a - 7 -
electrostatic discharge (ESD) across the wideband sensor damaging
the sensor and AFR500v2.
If you connect the main ground of an AFR500v2 to a vehicle and the
analog ground of an AFR500v2 to the analog input of a dyno
controller/logger without a dedicated ground path, you will pass this
voltage difference through the AFR500v2 and its wideband sensor.
This will skew your readings as well as damage the sensor &
controller.
7. Setting & Explanation of Options
Three new options have been added to the AFR500v2 which require
the installation of red jumper contacts (provided).
The first option is Bosch LSU 4.9 sensor capability. As shipped
(unless otherwise specified), this is set for the Bosch LSU 4.2 & NTK
Sensors. You must install a red jumper to enable LSU 4.9 ONLY
mode.
The second option is for fuel measurement range. As shipped (unless
otherwise specified), this is set for the Wideband (Standard) range of
9:1-16:1 for gasoline. Most customers should keep the standard range
setting. Only use the Extreme (FI Methanol/Lab) range setting if you
have a specific reason as increased range is traded for resolution. The
extreme range is 6:1-20:1 gasoline AFR. You must install a red
jumper to enable extreme range measurement.
The third option is for the display. The AFR500v2 can display
gasoline AFR, lambda, & methanol AFR. Today’s fuels are
increasingly complex with mixes and exotic fuel types. Some
customers are specifically familiar with methanol AFR rather than
gasoline AFR. We’ve added lambda as it handles fuel based
variations and is a better option than gasoline AFR for most modern
fuels. Methanol is exclusively for use with race alcohol / methanol
fuel. You must install a red jumper to enable lambda or methanol
display options.
Ballenger Motorsports AFR500v2 Manual Rev 1.4a - 8 -
8. How to set Jumper Configuration Options
See section 9 on how to check your configuration options, you do not
need to open the AFR500v2 to check your settings!
CAUTION!
HANDLE WITH EXTREME CARE!!!
HANDLE WITH THE CONNECTOR OR BOARD EDGE
USE RUBBER GLOVES OR CLEAN HANDS
HANDLE ONLY AFTER GROUNDING YOURSELF
HANDLE ONLY ON NON-CONDUCTIVE SURFACES
TAKE EXTREME CARE TO AVOID STATIC DISCHARGE!!!
MISHANDLING WILL VOID YOUR WARRANTY
Before removing the AFR500v2 circuit board, ground yourself and
plan a specific work zone that is nonconductive and stable. Do not
touch any components.
The AFR500v2 circuit board pulls out from its enclosure with the
removal of two external screws and the Deutsch connector. Once
removed, jumpers will be visible in the lower left corner of the circuit
board when looking in the orientation shown in Fig 1. The provided
jumpers are red and have long ergonomic handles to avoid touching
any board components directly. If a red contact jumper is installed,
then the circuit is closed. If no red contact jumper is installed, then
the circuit is open.
