3.5G Module Upgrade

Summary

This guide will show you how to upgradethe 3.5G cellular module into an existing RaceCapture/Pro MK2.

This 3.5G module is compatible with RaceCapture/Pro MK2 only.
Currently, the 3.5G module is intended for North America Markets only (United States, Canada, Mexico)
The existing 2.5G module will remain available for worldwide operation.

The 3.5G module employs the U-blox SARA U280 GSM module and is a drop in upgrade for the current SIM900 based 2.5G worldwide compatible device.

The form factor of the 3.5G module is identical, allowing any RaceCapture/Pro MK2 system to be upgraded.

Using a torx T1 bit, carefully remove the screws from the LED end of RaceCapture/Pro.
- Do this slowly with a hand tool to prevent stripping of threads
Unscrew and remove the gold SMA antenna nuts and washers from the GPS and cellular antenna connections.
Remove the end plate
Remove the board assembly from the enclosure.
- You will need to pop the green terminal block free from the opposite end plate as it is a tight fit, by design.

Remove the SIM card if necessary.
Gently pry the module away from the base board one side at a time until it is free from the socket on either side of the board.
Remove the new 3.5G module from the pouch and stow the 2.5G module into this pouch. Set the 2.5G module aside.
Install the the 3G module onto the same sockets of the RaceCapture/Pro board
- Ensure the pins are plugged in on both sides
- Ensure both sides are plugged in evenly, with no overhanging pins
- When installed, front edge of telemetry module board should be exactly parallel to main board of RaceCapture/Pro

Slide the assembly back into the enclosure, sliding the board into the bottom rail slot
When the board reaches the opposite end, you may need to use a tool to press down onto the green terminal block to ease it back into the machined cut-out.
Once the board is installed, re-install the end plate
- Ensure the flanges are re-installed, if necessary
Using the new screws provided, carefully hand thread the screws until you find the machined edge, then carefully screw in the rest of the way using a hand tool.
- It's important to avoid cross-threading the screws as the aluminum is delicate
Re-install the SMA washers and nuts. Torque the nuts to 3-5 inch/pounds
- Do not overtighten nuts