Collect the tools and parts you will need for assembly. Note the anti-static wrist strap.
On the Raspberry Pi, apply insulators to the HDMI connector and power capacitor, secure the mounting post and position the sockets and headers for P1 and P5. (For those using newer Raspberry Pi models, some additional instructions should be followed during assembly of the board.)
Place the RPi900 board on top of the Raspberry Pi, ensuring the pins of the P1 and P5 sockets mate with their holes. Use a second screw to secure the board to the mounting post.
Solder the P1 and P5 pins to the top side of the RPi900 board, taking care not to add too much solder. Use a medium-sized tip.
Turn the assembly over and solder the pins of the P5 header to the underside of the Raspberry Pi.
Once soldering is complete, unscrew the mounting post on the Raspberry Pi side and remove the RPi900 board.
If you are using the backup battery for the real-time clock, solder the battery holder to the underside of the board. It may be helpful to secure the battery holder with tape or a weight before soldering.
Solder the 2-way terminal block if you plan to power the board using this connector. If you plan to measure supply voltage, bridge jumper SJ2 with a small amount of solder.
To use the remote power switch for the Raspberry Pi, close jumper J7 using a shunt.
If using the on-board SMA antenna connector, attach a U.FL pigtail between the DNT900P radio and the U.FL connector on the board. Caution: Take care with these fragile connectors.
Insert your DNT900P radio module in its socket. Correctly orient the radio by aligning its antenna connector above the antenna connector on the board. N.B. Ensure the mounting post is attached before inserting the radio.
Congratulations, you're done! Re-attach the RPi900 board to the Raspberry Pi, secure the mounting post, and connect your power source and antenna. Your RPi900 should now be operational.