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A-8 Acutime 2000 Synchronization Kit User Guide
Trimble Standard Interface Protocol
A
A.5 Default Background Packets for Acutime 2000
The Acutime 2000 automatically outputs a set of packets that you can
monitor for changes in receiver operations, including receiver health,
time, almanac pages, and ephemeris updates. These messages are
output at the rates indicated in the table below.
!
Note – The background packets listed in this table are automatically
output. Background packets can be turned off. For more information
on this option, see Command Packet 8E-4D.
Table A-8 Background Packets
Output ID Description Notes
41 GPS time If the receiver's GPS clock is set and the
receiver is not outputting positions, time is
output approximately every 16 seconds.
Output approximately every 2.5 minutes if
the receiver is doing position fixes.
46 Receiver health Output approximately every 16 seconds, if
the receiver is not doing fixes.
Output approximately every 30 seconds if
the receiver is doing position fixes.
Whenever any bit in the health message
changes, receiver health is automatically
output.
6D Mode packet Output approximately every 30 seconds
or when a constellation change occurs.