Nexus RACE BOX, Инструкция по установке и эксплуатации

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RaceBox English
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screws to mount the Race Box. You will beed to remove the outer lid to expose the
mounting holes. Once the Race Box is mounted, leave the outer lid removed until the
installation procedure is complete.
12VDC Power
Next, hook up power leads to the Race Box. The Race Box is powered by 12 Volts DC
and requires as much as approximately 0.17 amperes of current under certain
conditions (but typically uses much less). Please see the diagram in figure yyy to locate
the 12VDC connection terminal. You may connect the Race Box to the same power
switch/breaker as your Nexus server if you like. However, if you think you will want to
change your polar table during a day of racing without having to reset the rest of your
Nexus instrument system, then you will want to provide the Race Box with a dedicated
switch.
3.2 Serial / FDX Cable
The next step is to connect the supplied serial cable between the Nexus Server and the
Race Box. Be sure to tighten the thumb screws on the cable so that neither end falls out
while sailing. If the supplied cable does not reach, you can use any standard DB9 male
to DB9 female “straight through” cable such as can be bought at any computer store
and many other stores.
3.3 Pushbutton
Connecting a push button to the Race Box is optional, but if you do not connect one you
will not be able to use the timer and start line tactical functions of the Race Box.
We have supplied a weatherproof push button, but any normally open type push button
can be used. To connect the button, please refer to the diagram in figure yyy to locate
the proper screw terminals. When tightening the screws, please be careful not to over
tighten. Just make the connection finger tight, then verify that a firm tug on the wire
does not pull it from the terminal. If a firm tug does cause the wire to pull out, then
reconnect a bit more tightly.
If you are connecting your button to the Race Box only, then it does not matter which
side of the button is connected to which screw terminal. However, if your button is also
connected to an instrument such as a steer pilot, be sure that the button wire that is
connected to the ground side of your instrument is also connected to the ground
(negative) button terminal on your Race Box. Ideally, the button should be connected
only to the Race Box.
3.4 Buzzer
We strongly recommend that when the start line timing features of the Race Box are
used, that you have a loud buzzer installed on your Nexus Server. The buzzer is used
to generate an audio conformation that certain commands to the Race Box were
accepted correctly.