Jackson Labs Micro-JLT GNSS, Руководство пользователя

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Micro-JLT GNSS™ User Manual
30 © 2019 Jackson Labs Technologies, Inc.
operating in GPS denied environments. The following command returns the PTIME output setting
stored in NV memory:
PTIMe:OUTput?
Sending the follwing command will cause the unit to automatically generate GPS:INIT:DATE and
GPS:INIT:TIME sentences described in
Section 3.3.31 and Section 3.3.32 on the serial port once per
second:
PTIMe:OUTput ON
3.5.6 PTIMe:LEAPsecond?
This command returns the results of the four following queries:
PTIMe:LEAPsecond:PENDing?
PTIMe:LEAPsecond:ACCumulated?
PTIMe:LEAPsecond:DATE?
PTIMe:LEAPsecond:DURation?
An example of a pending leapsecond event follows:
LEAPSECOND PENDING: 1
LEAPSECOND ACCUMULATED: 16
LEAPSECOND DATE: 2015,6,30
LEAPSECOND DURATION: 61
Please note that the unit stores pending leapsecond events in NV memory, and applies them correctly
even if the antenna is removed prior to the leapsecond as long as the pending information has been
received and stored in NV memory, and the unit has a properly set RTC time and date. This feature
sets JLT units apart from competitive products that only apply a leapsecond correctly if the GNSS
antenna is connected to the unit during the actual leapsecond event, and may thus miss the
leapsecond event entirely.
3.5.7 PTIMe:LEAPsecond:PENDing?
This command returns 1 if the GPS Almanac data contains a future pending leap second data and 0 if
no future leap second is pending or Almanac data is not available. The GNSS receiver must have the
GPS system enabled in Section
3.3.33 for the GPS Almanac to be available.
3.5.8 PTIMe:LEAPsecond:ACCumulated?
This command returns the internally applied leapsecond offset between GPS time and UTC time as
stored in the EEPROM (GPS Almanac not received yet) or as indicated by the GNSS receiver (GPS
Almanac is available).