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A-118 Acutime 2000 Synchronization Kit User Guide
Trimble Standard Interface Protocol
A
0x8F-AC
Report Packet 8F-AC
This report packet provides supplemental timing information once per
second if enabled with command packet 8E-A5. Information
regarding position, unit status and health, and the operational state of
the unit is provided. This packet can be requested with command
packet 8E-AC. When enabled, this packet is transmitted once per
second shortly after report packet 8F-AB.
The position sent in report packet 8F-AC depends on the Receiver
Operating Mode and on self-survey activity. When a self-survey is in
progress, the position sent is the running average of all of the position
fixes collected so far. When the self-survey ends or whenever the
receiver is using a time-only operating mode, then the position sent is
the position the receiver is using to perform time-only fixes. When
the self-survey is disabled or otherwise inactive and the receiver is
using a position fix operating mode, then the position sent is the
position fix computed on the last second.
Data Fields:
Receiver Mode: This field shows the fix mode that the GPS receiver
is currently configured for. The ACE UTC GPS spends most of its
time in the Overdetermined Clock mode where it uses all available
satellites to perform the best time-only fix possible. See packet 0xBB
for a description of all available receiver modes.
Self-Survey Progress: When a self-survey procedure is in progress,
this field shows the progress of the survey as a percentage of fixes
collected so far. The self-survey will be complete when the self-
survey progress reaches 100 percent.