In constructing a button panel it is necessary to provide switching diodes in the circuit of every
switch. Switching diodes reject ghost signals from other wires in the matrix that cause multiple
button signals when one button is depressed. The switch diode recommended by ECCI for
this purpose is type 1N4148, a common part, available at most electronics supply stores.
They can also be purchased online from suppliers like Newark Electronics. You will need one
diode per switch, so order as many as you need. Wiring diagrams to assist making add-on
peripherals are provided in this manual. [Figures 30 - 32].
If you are using the expansion port to access extra buttons, you may need to make sure that
diodes are also present at the wheel mounted buttons. These are not provided in systems
with only two accessory buttons. If you have the six-button paddle set, this is already built-in
and nothings needs to be done. With two button paddles you will either need to install the six-
button paddle upgrade from ECCI or hand wire in diodes into the switch wiring
.
6.0 POT REPLACEMENT AND POT SETUP
Potentiometers (Pots) are the electro-mechanical components that sense the position of the
wheel or pedal and translate this to electrical information read by the ECCI USB HD system.
These are long-lived but will eventually wear out. The sign of pot wear is notchy, inconsistent
response at the same spot in the axis travel. If the problem is variable, occurring in different
areas of travel at different times, the problem may instead be a loose pot shaft nut or a loose
wire connector. Rule these things out first before ordering new pots.
If you need new pots, use only ECCI pots. ECCI pots are specifically made for ECCI
controllers and have the required resistance range and performance characteristics. ECCI
cannot warrant the performance of any system not using ECCI pots. When replacements are
needed order the ECCI HP Racing pots. The USB HD uses a different pot for steering and
pedals. Make sure to specify what you need. The steering pot is 100K the pedals use 50K.
Unless you have a rare premature failure (under 1 year), ECCI recommends replacing the
entire set rather than the single pot with the problem. If your clutch pedal is not used much
this could be excluded. Pots typically last up to two years under daily use conditions.
6.1 POT REPLACEMENT PROCEDURES
Pot replacement requires specific procedures to complete properly. Figure 14 shows the
procedure to remove the pedal pot cartridge. Figure 29b shows in detail the mounting of pedal
pots. Figure 29a shows the mounting of the steering pot. Pot service steps are explained in
more detail with photographs on ECCI’s website at this web address:
www.ecci.net/instructions/6000hdusbpotservice.htm
6.2 CHECKING POTS
If you are unsure if your pots are setup properly or in need of service take the following steps.
1 Connect all cables, making sure the ground cable is properly attached and start the
computer. Go to Control Panel and select Game Controllers from the menu. The Game
Controllers dialog box should appear showing the ECCI HI-DEF USB controller is
connected. If this does not appear recheck your connections.
2 Highlight the controller, and then click on the Properties button. Select the Settings tab
and click on Calibrate. Leave the wheel untouched to set center point then click a button.
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