[GPSNavX]

If all is well (i.e the Keyspan Adapter is connected to a NMEA 0183 talker - GPS) the UTC field in the GPS panel will update when the port selected is KeySerial1, Rate 4800, Type Other in Settings drawer. In some rare instances connecting to a differential RS-422 NMEA connection (as opposed to a single-ended RS-232 connection) will not work with the Keyspan. This symptom of this is a solid green light on the Keyspan adapter. I have only seen this with older Furuno GPS or AIS receivers. If the port KeySerial1 is not available it means either the Keyspan driver is not installed OR the Keyspan adapter was plugged in after starting up GPSNavX or MacENC.