TrueTime 151-602 - 3-155 KEYPAD FUNCTION 55 - ALTITUDE UNITS ENTRY;REQUEST; 3-156 KEYPAD FUNCTION 56 - AVERAGE POSITION ENTRY;REQUEST

X
X
L
L
D
D
C
C
M
M
A
A
N
N
.
.
d
d
o
o
c
c
3
3
-
-
2
2
5
5
R
R
E
E
V
V
E
E
Press "FUNC/ENTR", then "5" "3". The display will show:
AUTO / TIME Mode
AUTO
Press the up or down arrow keys to scroll through the possible operating modes. When the display
shows the desired mode, press "FUNC/ENTR" to enter your choice.
When the optional SURVEY mode of operation is available and is selected, either the STATIC or
DYNAMIC sub-mode of SURVEY operation must be selected, the display will show:
Dynamic Mode
STATIC
Press the up or down arrow keys to scroll through the possible SURVEY operating sub-modes. When
the display shows the desired sub-mode, press "FUNC/ENTR" to enter your choice.
3-154 reserved
3-155 KEYPAD FUNCTION 55 - ALTITUDE UNITS ENTRY/REQUEST
Use Function 55 to select the units that altitude will be expressed in, either feet or meters. The
as-shipped default is meters. The default value on power-up will be that in use prior to power-down.
Press "FUNC/ENTR", then "5" "5". The display will show:
Altitude mode or Altitude mode
Meters F
eet
Press the up or down arrow keys to toggle between "Meters" and "Feet". When the display shows the
desired units of measure, press "FUNC/ENTR" to enter your choice.
3-156 KEYPAD FUNCTION 56 - AVERAGE POSITION ENTRY/REQUEST
Use Keypad Function 56 to enter or request the averaged, hence accurate, current antenna position.
This function provides a means of setting an accurate, surveyed position for use in the TIME mode of
operation. Positions provided to the XL-DC via Function 56 should be more accurate than 10 meters,
otherwise better results may be obtained via AUTO mode (unless satellite visibility at the site is too
poor to provide three dimensional positioning).
The as-shipped default position is S 00d00’0.0” W 000d00’0.0”. The position on power-up will be that in
use prior to power-down. An averaged position returned via Function 56 which subsequently becomes
in error by more than 1 km, either due to transport of the receiver and antenna or error in the initial
entry, will be cleared and recalculated automatically once positioning begins at the new site and the
error is detected.