1 When calibrating the PMBII you do not have to use the full mechanical travel of the pedal.
Calibrate using the amount of pressure you want to establish as 100% braking pressure.
Optimal anti-lockup performance is obtained when slightly more pressure is applied than
you would normally desire. This helps prevent brake lock at the limit of braking. You
should have to work the brake a bit to get full lock. Do not exceed your maximum
pressure target during the calibration. If you exceed your target, go back and start
calibration again.
2 Note the calibration numbers returned at your desired maximum pressure setting and
write them down. Use this number for consistency in future calibration.
3 Now finish calibrating the remaining controls and go to into your simulation program. If
the program uses the Windows Direct-X calibration information directly, no further
calibration is required, just go out on the track and drive.
4 If the program requires its own calibration (i.e. NASCAR 2003), calibrate the PMB brake
pedal in the controller options screen the same way as you did in Windows, being careful
to only apply the amount of pressure you want to represent full braking. Write down the
calibration number at your maximum pedal pressure level to use for future reference.
5 Now go out and take a few laps. If it seems like you need to apply too much pressure to
get the desired braking effect, go back and recalibrate. This time move the brake to a
slightly lower maximum pressure which will return calibration numbers a few numbers
lower than before. Go back out to the track and see how this works. If the brake feels too
light, go back and recalibrate to calibration values that are slightly higher than the
previous calibration values. You will need to do some experimentation to get just the right
braking effect.
6 If for some reason your desired pressures seem to be past the limit of brake travel, or are
less than 50% of the brake travel you may need to adjust the PMBII pressure adjustment.
If this does not get the desired result, you may need to get a heavier PMBII accessory
spring from ECCI or the Race Brake Kit. All but a very few users find their optimal setting
by just adjusting calibration with the stock spring.
5.0 ACCESSORY EXPANSION PORT
The ECCI USB HD ULTRA system supports four analog control axes and up to 28 digital
on/off buttons. ECCI wheels offer two or six accessory buttons as standard on the paddle set.
The ECCI USB HD board has a jumper that selects the wheel button mode. Depending on
which paddle set you have, two or six accessory buttons, you may want to move this jumper
[Figure 7].
Accessing additional button functions is done through the DB-9 port on the side of the
electronics pan in the wheel unit. This lies just under the right side of the unit cover. The
additional buttons are acquired through creating a custom button console. Pre-made consoles
and cables are not available from ECCI. Those constructing a console should refer to Figure
30 for pin assignments.
The buttons are activated through a column and row matrix of pin combinations. Buttons are
in sets of four (rows) served by multiple commons (columns). Rows 1 to 4 correspond with the
four primary switches. Changing the common lead from one column to another accesses the
next set of four, and so on. This scheme allows nine wires to control 20 buttons.
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