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A Trimble Standard Interface Protocol
58 Trimble ThunderBolt E GPS Disciplined Clock User Guide
2 acquisition flag UNIT8 0 Never acquired
1Acquired
2 Re-opened search
3 ephemeris flag UNIT8 0 Flag not set
>0 Good ephemeris
4-7 signal level Single AMU or dBHz
8-11 time of last
measurement
Single secs GPS time of week
12-15 elevation angle Single Radians
16-19 azimuth angle Single Radians
20 old measurement flag UINT8 0 Flag not set
>0 Measurement old
21 integer msec flag UINT8 0 Don't know msec
1 Known from subframe
2 Verified by bit crossing
3 Verified by good fix
4 Suspect msec error
22 bad data flag UINT8 0 Flag not set
1 Bad parity
2 Bad ephemeris health
23 data collection flag UINT8 0 Flag not set
>0 Collection in progress
Byte Bit Item Type Value Meaning