Trimble Outdoors SK8 - Manual (Page 38)

2-2 Lassen-SK8 Embedded GPS Module
Hardware Integration
I
Caution – Before disassembling the interface unit, disconnect the unit from any external
power source and confirm that both you and your work surface are properly grounded for
ESD protection. The interface unit motherboard contains a 3.6V lithium battery. Exercise
caution when removing it from the Lassen-SK8 unit.
1. Remove the four screws which secure the bottom plate to the base of the metal
enclosure. Set the bottom plate aside.
2. Remove the two screws securing the Lassen-SK8 module to the standoffs on the
motherboard. These screws are located at opposite ends of the receiver module
(see Figure 2-2)
Figure 2-2. Removing the Receiver Module
3. Carefully pull the module straight off the motherboard to disengage the 8-pin
header from the 10-pin socket on the motherboard (see Figure 2-2). Do not rotate
or flex the module while disengaging the header, since this could damage the
connector or the board components. Pull straight up, keeping the Lassen-SK8
parallel to the motherboard.
4. Disconnect the RF cable connecting the Lassen-SK8 module to the SMB
connector on the enclosure. This connection was made by pushing the antenna
cable connector onto the SMB connector on the receiver. To remove the antenna
cable, grasp the cable connector and pull it straight off of the antenna connector.
Do not twist the cable or attempt to pull it off at an angle, as this may damage the
connector.
5. To reinstall the Lassen-SK8 board in the motherboard, follow steps 1 - 4 in
reverse order.
*
Note – The Lassen-SK8 is designed for embedded applications. The digital I/O lines and
power lines are not designed with additional ESD protection as a stand-alone module
would be. Use standard CMOS ESD handling precautions when removing and installing
the receiver module.