User's Manual

Acutime 2000 Synchronization Kit User Guide A-101
A Trimble Standard Interface Protocol
0x8E-AC
Command Packet 8E-AC
Request Supplemental Timing Packet
This command packet can be used to request the supplemental timing
packet 8F-AC. To receive report packet 8F-AC once per second use
command 8E-A5 to enable the automatic output.
The Request Type item determines how the ACE UTC GPS will reply
to this command.
• Request Type 0: The most current supplemental timing
values will be sent in report packet 8F-AC immediately.
• Request Type 1: The response is not sent immediately.
Instead report packet 8F-AC is sent within 300ms after the
next PPS output. This is the same time that the packet would
be automatically sent if enabled.
• Request Type 2: Same as type 1 except that both report
packets 8F-AB and 8F-AC are sent after the next PPS output.
Table A-84 Command Packet 8E-AC
Byte Item Type Value Meaning
0 Subcode BYTE 0xAC
1 Request
type
BYTE 0
1
2
Send 0x8F-AC immediately
Send 0x8F-AC on-time next second
Send 0x8F-AB and 0x8F-AC on-time
next second