[time-nuts] Capturing NMEA and TICC timestamp data in time-correlated way?

[Mark Sims]

Lady Heather does measurements on the arrival time of message vs the time encoded in the time message being used and compensates the time code for the offset.  It uses a default value that depends upon the receiver type or can use a user specified value.  For generic NMEA receivers you should specify the offset (/tsx=offset) since the specific model type cannot be determined.

To measure the offset properly, the system time needs to be set accurately.  NTP is the best way to do this.  The TK keyboard command does the measurement.  It calculates an average offset value and a median offset value.  Also writes a file with message offset histogram data.