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CA42/50/52 Position menus
Chapter 4
44
HDOP: High
HDOP: Low
-
The minus key will exclude the satellite, and…
+
the plus key will reinstate it
- these two plus and minus keys are also the
ZOOM
keys!
ENT
Confirm entry
HDOP, PDOP and DOP limits:
MENU
Call up the menu bar, and…
2,5
load satellite status display
The value of HDOP
(horizontal dilution of precision)
expresses “the quality” of the satellite geometry in
relation to 2D positioning and a fixed antenna
altitude.
PDOP (position dilution of precision) is equivalent
to 3D positioning. The values will typically stay
between 1.3 and 8. The lower the value the higher
the “quality”. A poor geometry might produce a
value of more than 20.
If the preset DOP limit is exceeded (indicated by * in the position
display) it will cause the position updating to stop until it once again is
within the limit.
The DOP limit can be changed manually, but should not be set higher than
8 (factory setup), as this may result in poor accuracy – false position.
Position update alarm - go to “Alarm” in the display and set it to “ON”
if you wish to be alerted when there is no position update.
ENT
Open for change
Go to DOP limit (6-99), and…
0-9
Insert new limit
ENT
Confirm entry
Содержание CA42
Страница 50: ...CA42 50 52 Position menus Chapter 4 50...
Страница 82: ...CA42 50 52 NAV menus navigation examples Chapter 6 82...
Страница 132: ...CA42 50 52 Miscellaneous menu Chapter 9 132...
Страница 170: ...CA42 50 52 C MAP attributes Appendix C 170...