Can Bus Termination(Only For Test Use)(Sw6); Minipcie(Wwan) Power Voltage Setup (Sw8); Minipcie(Wwan) Support Wwan Module Setup(Sw9); I/O Db9 Pin9 Select (On Top Layout)(Cn15) - Advantech TREK-688 User Manual

3.1.3.3 CAN BUS Termination (Only for test use) (SW6)
ON/ON Disable (Default)
OFF/OFF Enable CAN BUS Terminator
3.1.3.4 MiniPCIe (WWAN) Power Voltage Setup (SW8)
3.1.3.5 MiniPCIe (WWAN) Support WWAN Module Setup (SW9)
ON For standard MiniPCIe (for WLAN) (Default)
OFF Support LTE/3.5G Module (for WWAN)
3.1.3.6 I/O DB9 PIN9 select (ON TOP LAYOUT) (CN15)
1 2 Ring (Default)
2 3 Power_+12V/0.5A

3.2 LED Indicator

System Reset
Button
Power Activity
indicator LED
CFast Activity
Indicator LED
WLAN Activity
Indicator LED
WWAN Activity
Indicator LED
GPS Activity
Indicator LED
LAN Activity
Indicator LED
Force the system to reboot.
When the system is in NORMAL mode, this LED will be light
up.(Red color)
The storage activity indicator is a green LED, and flashes to show
the activity of CFast.(Orange color)
The WLAN activity indicator is an orange LED, and flashes to
show the activity of the WLAN module.(Green color)
This LED is controlled directly by the WLAN module.
The WWAN activity indicator is a green LED, and flashes to show
the activity of the WWAN module.(Green color)
This LED is controlled directly by the WWAN module.
The GPS activity indicator is an orange LED, and is used to show
GPS activity. This LED is controlled directly by the GPS
chips.(Orange color)
The LAN activity indicator is a green LED, and flashes to show
the activity of the LAN data transportation. (Green color)
15 TREK-688 User Manual