JRC JMA-1030 Series, Instruction Manual, Page: 126 / 198

Chapter 7 INITIAL SETTINGS
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7.9.2.4 ELEVATE MASK
Limit the satellite to be used with elevation angle.
7.9.2.5 HDOP
Set the HDOP level of the GPS receiver.
The smaller the value, the higher the accuracy although fixing a position becomes difficult.
7.9.2.6 SMOOTHING LL
Smoothing can be applied to measured positions. The higher the smoothing value, the smoother the results
will be, but the greater the time lag. Conversely, if the smoothing value is set low, a great number of changes
will occur, but there will be little time lag. As such, it is important to choose the optimal value for your own
usage situation.
7.9.2.7 SMOOTHING SOG
Smoothing can be applied to measured speeds. The higher the smoothing value, the smoother the results will
be, but the greater the time lag. Conversely, if the smoothing value is set low, a great number of changes will
occur, but there will be little time lag. As such, it is important to choose the optimal value for your own usage
situation.
7.9.2.8 SMOOTHING COG
Smoothing can be applied to measured courses. The higher the smoothing value, the smoother the results
will be, but the greater the time lag. Conversely, if the smoothing value is set low, a great number of changes
will occur, but there will be little time lag. As such, it is important to choose the optimal value for your own
usage situation.
7.9.2.9 SMOOTHING
This setting is corresponding to relatively old JRC GPS model.
Note: The smoothing setting range is as below.
0/10/40 sec
Smoothing function can be applied to measured positions, speeds and courses. However, if the set value of
the smoothing is too high, it is possible to obtain a smooth result, but a large time lag is generated at the
same time.
Conversely, if the set value of the smoothing is too low, many changes will be generated, but the time lag will
be reduced considerably. Thus, it is important to choose an optimal value for your own usage situation.
7.9.2.10 SMOOTHING
This setting is corresponding to relatively new JRC GPS model.
Note: The smoothing setting range is depending on the JRC GPS software version.
0 to 99 sec (R29.04~R33.99)
1 to 99 sec (R26.01~R29.03)
Smoothing function can be applied to measured positions, speeds and courses.
However, if the set value of the smoothing is too high, it is possible to obtain a smooth result, but a large time
lag is generated at the same time.
Conversely, if the set value of the smoothing is too low, many changes will be generated, but the time lag will
be reduced considerably. Thus, it is important to choose an optimal value for your own usage function.