CF card device not working or not recognized

Most often a CF card device does not work or is not recognized (such as the red LED light on the side of the GlobalSAT BC-337 GPS CF card adapter is not lit (as it should always be when the Archer is on)) when it has not been properly installed following each and every step of the Archer Extended Cap Installation Guide. This documents comes printed in the package with an extended cap when purchased separately, or is available on our website at the following address.

If not, then the CF card header (pins or guide rails/arms) inside the Archer may have been damaged. You may be able to visually look into the CF card slot to see if any of the 50 pins are bent or broken, though some damage may not be visible. A repair order will need to be submitted following the instructions and filling out the form at:

Otherwise, you could try some standard software troubleshooting steps such as performing a Reset (press and hold Power Button for 5 seconds), Hard Reset (press and hold Power Button for 20 seconds), remove battery pack and wall charger for 20 minutes, Clean Registry, and/or Clean Boot as explained in the manual and our online knowledge base.

The GPS CF card devive may have a red or yellow LED on the side that can indicate operation. Usually when this light is on and bright, the card device is functioning (but not always when there is damage in the CF card slot). A blinking light often indicates that a GPS fix has been obtained while a software program is accessing the COM port of the device (usually COM2 or COM3). You may need to simply set the correct baud rate, parity, stop bit, or data bit setting used by serial devices such as GPS receivers.