© 2017 Jackson Labs Technologies, Inc. 25
Mini-JLT GNSS™ User Manual
3.4.4 GYRO:CAL:COMPUTE
This command can be used to automatically compute the offset and gain compensation of the
accelerometer output for units that are not factory-calibrated. The goal is to have the unit indicate a
range of +/- 1.0g on all three axis when slowly rotated through the axis, as well as 0.0g for any axis
that is perpendicular to the earth’s gravity.
The user must establish the minimum and maximum g-loads that are displayed on all three axis by
slowly tilting the unit over 180 degrees on all three axis. These values are written down on a piece of
paper, and the system calculates the required gain and offset parameters to scale the accelerometer
output to +/- 1g peak-to-peak scale, and 0g indication based on entering these values. The
GYRO:CAL:COMPUTE command will query the user for the maximum and minimum indicated
g-loads. The GYRO:TRACE 10 command can be used to help establish the g-indications on the three
different axis to aid in this calibration.
3.4.5 GYRO:SENS, GYRO:EFC, and GPS:CAL:RESET
Used for factory calibration of Gyro subsystem.
3.4.6 GYRO:GLOAD?
This command will return the present acceleration on the X, Y, and Z axis.
3.5 PTIME Subsystem
The PTIME subsystem regroups all the commands related to the management of the time.The list of
the commands supported is the following:
PTIMe:DATE?
PTIMe:TIME?
PTIMe:TIME:STRing?
PTIMe:TINTerval?
PTIME?
3.5.1 PTIMe:DATE?
This query returns the current calendar date. The local calendar date is referenced to UTC time. The
year, month, and day are returned.
3.5.2 PTIMe:TIME?
This query returns the current 24-hour time. The local time is referenced to UTC time. The hour,
minute, and second is returned.
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