Jumper Settings; How To Set Jumpers; Cmos Clear & Me Clear (Jcmos1 & Jme1); Watchdog Timer Output (Jwdt1) - Advantech AIMB-705 User Manual

1.8

Jumper Settings

This section provides instructions on how to configure your motherboard by setting
the jumpers. It also includes the motherboard default settings and your options for
each jumper.
1.8.1

How to set jumpers

You can configure your motherboard to match the needs of your application by set-
ting 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 & ME clear (JCMOS1 & JME1)
The AIMB-705 motherboard 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 J1 to 2-3 closed for just a few sec-
onds, and then move the jumper back to 1-2 closed. This procedure will reset the
CMOS to its default setting.
Table 1.3: JCMOS1/JME1
Function
* Keep CMOS and ME data
Clear CMOS and ME data
* default setting
1.8.3

Watchdog timer output (JWDT1)

The AIMB-705 contains a watchdog timer that will reset the CPU. This feature means
the AIMB-705 will recover from a software failure or an EMI problem. The JWDT1
jumper settings control the outcome of what the computer will do in the event the
watchdog timer is tripped.
Table 1.4: Watchdog timer output (JWDT1)
Function
NC
AIMB-705 User Manual
Jumper Setting
1 2 3
1-2 closed
1 2 3
2-3 closed
Jumper Setting
8
2-4 closed