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190-00879-08 GPS 18x Technical Specifications Rev. D
Page 21
The accuracy of the five-pulse-per-second output is maintained only while the GPS 18x-5Hz can compute a valid
position fix. To obtain the most accurate results, the five-pulse-per-second output should be calibrated against a
local time reference to compensate for cable and internal receiver delays and the local time bias.
The default pulse width is 100 ms, however; it may be programmed in 20 ms increments between 20 ms and 180 ms
as described in $PGRMC section 4.1.2 Sensor Initialization Information (PGRMI), field <13>.