Specifications

VP ONCORE COMMAND REFERENCE
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1PPS CABLE DELAY OPTION (@@Az)
NOTE: The input/output messages described here are available only if
VP Options ‘A’ or ‘I’ are installed.
The GPS receiver outputs a 1PPS signal, the rising edge of which is
placed on top of the GPS/ UTC one-second tic mark epoch. The 1PPS
Cable Delay offset allows the user to offset the one-pulse-per-second
time mark in one nanosecond increments relative to the Measurement
Epoch. The Cable Delay allows the user to select between zero and one
additional millisecond to compensate for the length of the antenna cable.
This parameter instructs the GPS receiver to output the 1PPS output
pulse earlier in time to compensate for antenna cable delay. Up to one
millisecond of equivalent cable delay can be removed. Zero cable delay
is set for a zero-length antenna cable. The user should consult a cable
data book for the delay per foot for the particular antenna cable used in
order to compute the total cable delay needed for a particular installation.
The corrected time reference is relative to either GPS or UTC time, as
specified and set by the user using the
@@Aw command.
Range: 0.000 to 0.000999999 seconds
Default Value: 0.000 seconds
Resolution: 1 nanosecond
68 Synergy Systems, LLC 05OCT01