ashtech HDS800, Reference Manual

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Set Command Library
$PASHQ,UPL,LST
UTS: Synchronizing Onto GPS Time
Function:
This function is used to enable or disable a clock steering
mechanism that synchronizes measurements and coordinates
with the GPS system time rather than with the local (receiver)
clock.
Command Format
Syntax
$PASHS,UTS,s1[*cc]
Parameters
Example
Enabling synchronization:
$PASHS,UTS,ON*0A
Comments
• All output data, except for legacy MPC, DPC and RPC, are
always clock steered.
• Legacy MPC, DPC and RPC data appear as steered or not
steered depending on the last $PASHS,UTS command
run.
• The PBN message contains internal clock and clock drift
estimates when UTS is OFF and reports zeros for these
estimates when UTS is ON.
• The ATOM,RNX message with scenario 0 contains original
clock and clock drift estimates that can be used on
decoding side to restore the original (not steered)
observables, if needed.
Relevant Query
Command
$PASHQ,UTS
$PASHQ,PAR
Parameter Description Range Default
s1
Enabling (ON) or disabling (OFF) syn-
chronization with GPS time
ON, OFF ON
*cc Optional checksum *00-*FF -