What do I do if I get the error code: TXOVL?

This means that the Transmitter is unable to lock on to a stable contact resistance. There are various things that can cause a varying contact resistance and they are all related to a loose electrode stake-to-ground contact.

Check for a loose electrode stake. This connection must be solid.
Wind can cause cables to move which in turn will move the stake. Try to place electrode cables on flat ground rather than over a bush or tall grass to ensure that the cables do not move.
Traffic. Surveys performed close to a road can experience a similar "Wind" effect as the vehicle passes near the electrode cables.

NOTE: There are 3 error codes your SuperSting™ can generate: HVOVL, TXOVL, and INOVL