Posted 12/5/2007 11:54 (#253077 - in reply to #252633) Subject: RE: Moving Trimble Autosteer from stx440 to mx215????
The yellow light means that there are no DGPS corrections (slow blink), or not enough GPS signals being tracked to compute position (fast blink). This can vary based on whether the 252 is configured for WAAS, OmniStar or RTK.