User manual

7 PCI-7020 User Manual
Chapter 1 Hardware Configuration
1.7 Safety Precautions
1.8 Jumper Settings
This section provides instructions on how to configure your PCI-7020 by setting the
jumpers. It also includes the PCI-7020's default settings and your options for each
jumper.
1.8.1 How to Set Jumpers
You can configure your PCI-7020 to match the needs of your application by setting
the jumpers. A jumper is a metal bridge that closes an electrical circuit. It consists of
two metal pins and a small metal clip (often protected by a plastic cover) that slides
over the pins to connect them. To "close" (or turn ON) a jumper, you connect the pins
with the clip. To "open" (or turn OFF) a jumper, you remove the clip. Sometimes a
jumper consists of a set of three pins, labeled 1, 2, and 3. In this case you connect
either pins 1 and 2, or 2 and 3. A pair of needle-nose pliers may be useful when set-
ting jumpers.
1.8.2 CMOS Clear (CMOS1)
The PCI-7020 single board computer contains a jumper that can erase CMOS data
and reset the system BIOS information. Normally this jumper should be set with pins
1-2 closed. If you want to reset the CMOS data, set CMOS1 to 2-3 closed for just a
few seconds, and then move the jumper back to 1-2 closed. This procedure will reset
the CMOS to its default setting.
Warning! Always completely disconnect the power cord from your chassis when-
ever you work with the hardware. Do not make connections while the
power is on. Sensitive electronic components can be damaged by sud-
den power surges. Only experienced electronics personnel should open
the PC chassis.
Caution! Always ground yourself to remove any static charge before touching the
boards. Modern electronic devices are very sensitive to static electric
charges. As a safety precaution, use a grounding wrist strap at all times.
Place all electronic components on a static- dissipative surface or in a
static-shielded bag when they are not in the chassis.
Caution! The computer is provided with a battery-powered real-time clock circuit.
There is a danger of explosion if battery is incorrectly replaced. Replace
only with same or equivalent type recommended by the manufacturer.
Discard used batteries according to manufacturer's instructions.
Caution! There is a danger of a new battery exploding if it is incorrectly installed.
Do not attempt to recharge, force open, or heat the battery. Replace the
battery only with the same or equivalent type recommended by the man-
ufacturer. Discard used batteries according to the manufacturer's
instructions.