Advantech PCA-6186 - CMOS Clear (J1); Table 1.3:CMOS (J1); Watchdog Timer Output (J2)

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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 setting
jumpers.
1.7.2 CMOS clear (J1)
The PCA-6186 CPU card contains a jumper that can erase CMOS data
and reset the system BIOS information. Normally this jumper should be
set with pins 1-2 open. If you want to reset the CMOS data, set J1 to 1-2
closed for just a few seconds, and then move the jumper back to 1-2 open.
This procedure will reset the CMOS to its default setting.
1.7.3 Watchdog timer output (J2)
The PCA-6186 contains a watchdog timer that will reset the CPU or send
a signal to IRQ11 in the event the CPU stops processing. This feature
means the PCA-6186 will recover from a software failure or an EMI
problem. The J2 jumper settings control the outcome of what the com-
puter will do in the event the watchdog timer is tripped.
Table 1.3: CMOS (J1)
Function Jumper Setting
* Keep CMOS data 1-2 open
Clear CMOS data 1-2 closed
* default setting
1
2