Advantech CA-6178F-00B1, User Manual

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PCA-6178 User's Manual
B.13 Power LED and Keylock Connector
(CN16)
You can use an LED to indicate when the CPU card is on. Pin 1 of
CN16 supplies the LED's power, and Pin 3 is the ground.
You can use a switch (or a lock) to disable the keyboard so that the
PC will not respond to any input. This is useful if you do not want
anyone to change or stop a program which is running. Simply
connect the switch from Pin 4 to Pin 5 of CN16.
Table B-13: Power LED and keylock connector (CN16)
Pin Function
1 LED power (+5 V)
2 NC
3 GND
4 Keyboard lock
5 GND
B.14 External Speaker Connector (CN17)
The CPU card has its own buzzer. You can also connect it to the
external speaker on your computer chassis.
Table B-14: External speaker (CN17)
Pin Function
1 +5 V
CC
2 GND
3 Internal buzzer
4 Speaker out