Delta PG-40 Specifications Page 26

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26 LTL-X Retrometer DELTA
SMART KEY: OK
SELECT SERIES
CLEAR LAST MEAS.
RESET AVERAGE
SER. ID ON/OFF
Use the UP or DOWN button to select the SMART key function. Accept by pressing the OK
button.
The selected function is now accessed every time is pressed
Setting the aux functions
The Aux function is used to control auxiliary built-in equipment, e.g. a GPS receiver.
AUX: OK
GPS ON
GPS TIMER OFF
DGPS WAAS
Using GPS (optional)
The GPS receiver is mounted inside the instrument, drawing its power from the internal bat-
tery. The GPS system is used to supply position data (latitude and longitude) to the log to-
gether with the measurement data.
If activated a GPS icon is shown in the upper icon row (see picture pg. 17). The icon will display
the quality (reliability) of the GPS signal. If DGPS (Differential GPS) is selected, and a valid
DGPS satellite is recognized, a "D" is added to the icon. This is illustrated in the FAIR recep-
tion icon below.
In order to minimize the time required to get a GPS position fix after the LTL-X has been
turned on, a "GPS TIMER" can be activated. This timer will keep the GPS unit powered up
for 30 minutes after the instrument has shut off. If the instrument is turned back on within 30
minutes, the GPS will acquire a valid fix quickly.
Below is an explanation of the GPS icon states.
GOOD: The GPS HDOP (Horizontal Dilution Of Precision) value is below 5.
FAIR: The GPS HDOP value is larger than 5, but the GPS can FIX.
NO: The GPS cannot FIX (weak or no signal).
The GPS position data, HDOP value, and the number of satellites used in the position calcula-
tion are saved in the log together with the R
L
data.
Activating the GPS
Press the MENU button and select SETTINGS / AUX, highlight the GPS line and press the OK
button to toggle the GPS ON or OFF. Press the HOME button to return to the HOME screen.
D
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