NorthStar 961 Reference Manual page 349

961/962 Operations and Reference Manual, Rev. A
If you're viewing and editing information on the
INFORMATION
keys to view other data, your edit-in-progress is immediately
cancelled so that you can view the data requested by your function
keypress. To resume editing at the
screen, you must return to that screen and re-enter the data you lost
when you pressed the function key. To purposely cancel an
edit-in-progress, however, you'd normally press the
Changing GPS speed averaging value
When you aren't using DGPS or you're out of range, you may
notice that the SOG readings obtained from the GPS satellite
system are slightly erratic, varying by up to several knots. The
GPS SPEED AV function often can improve the steadiness of
these readings, although you'll see a slightly longer
display-reaction time when the speed changes.
With GPS speed averaging, you can select the time over which
your speed is averaged, with available values between one and
ten seconds. A longer averaging time is useful at lower speeds
when you require the highest accuracy. With this high degree
of accuracy, you'll see a steady display of your speed that's
slow to change. A shorter averaging time, however, provides
less accuracy and a quicker-changing display of your speed.
You also can turn off speed averaging completely for the
quickest possible display-reaction time.
You can change the speed averaging value at any time without
affecting other navigation functions.
To change the speed averaging value:
1. At the RECEIVER INFORMATION screen, press the
CURSOR PAD to highlight the GPS SPEED AV field, then
press the EDIT key.
2. Press the CURSOR PAD left or right to select an averaging
time in seconds of 1, 2, 5, 10, or OFF.
3. Press ACCEPT to make the change, or CANCEL to leave
the option unchanged.
Chapter 14 - Service and Maintenance Functions
NOTE:
screen, and you press one of the five function
RECEIVER INFORMATION
RECEIVER
CANCEL
key.
Page 14-5