Simulation Time
Satellite Navigation
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User Manual 1178.6379.02 ─ 01
Simulation Start
Sets the simulation start data and time in the selected format.
"Format"
Per default, the UTC format used. If different format is selected, the
time is automatically recalculated.
Note:
parameters, necessary for time conversion between the proprietary
time of the navigation standard and the UTC.
Remote command:
[:SOURce<hw>]:BB:GNSS:TIME:STARt:TBASis
"Date [dd.mm.yyyy], Time [hh:mm:ss:xxx]"
Enters the date for the simulation in DD.MM.YYYY format of the Gre-
gorian calendar and the exact simulation start time in UTC time for-
mat.
Remote command:
[:SOURce<hw>]:BB:GNSS:TIME:STARt:DATE
[:SOURce<hw>]:BB:GNSS:TIME:STARt:TIME
"Week Number, Time of Week (TOW)"
The satellite clocks in the GPS and Galileo navigation systems are
not synchronized to the UTC. They use a proprietary time, the GPS
and the Galileo system time. The format used for these systems is
week number (WN) and time of week (TOW), that is the simulation
start time within this week.
TOW is expressed in number of seconds and covers an entire week.
The value is reset to zero at the end of each week.
The weeks are numbered starting from a reference time point
(WN_REF=0), that depends on the navigation standard:
●
GPS reference point: January 6, 1980 (00:00:00 UTC)
●
GALILEO reference point: August 22, 1999
●
BeiDou reference point: January 01, 2006
Remote command:
[:SOURce<hw>]:BB:GNSS:TIME:STARt:WNUMber
[:SOURce<hw>]:BB:GNSS:TIME:STARt:TOWeek
Leap Second Configuration
The GPS time does not consider time corrections that are typical for the UTC, such as
the leap second for instance.
The date of the next expected correction is determined by the parameter "Next Leap
Second Date".
As of June 30 2012, the value of the "Current Leap Second", is 16 seconds.
Auto Configure Leap Seconds ← Leap Second Configuration
Sets the leap second value according to the simulation time.
Remote command:
[:SOURce<hw>]:BB:GNSS:TIME:CONVersion:LEAP:AUTO
Time Configuration Settings
