Screen Service
SDT 200UB – SDT 500UB ARK-1 ATSC
Operations
July, 2009
v 1.0
Page 3 - 91
Table 17.
GPS window
Box
Parameter /
Control
Description
Admitted Ranges / Values
I/A
Satellite
#Number of
Visible sat
Number of visible GPS satellites indicator.
I/A
Satellite
#Number of
Tracked sat
Number of tracked GPS satellites indicator.
I/A
Satellite Alarm
GPS alarm status indicator. This alarm is a logic OR of the GPS alarms (refer to
Alarms
paragraph).
•
Red: Alarm on
•
Grey: Alarm off
I/A
Satellite
Data valid
Valid satellite signal receiving status indicator.
•
Green: Valid
•
Grey: Not valid
I/A
Position
Latitude (°)
Site latitude expressed in degrees.
I/A
Position
Longitude (°)
Site longitude expressed in degrees.
I/A
Date & Time
UTC Time
Current time indicator.
Each GPS satellite has an atomic clock and continually transmits messages containing the
current time and date at the start of the message sended by the GPS itself.
I/A
Date & Time
UTC Date
Current date indicator.
Each GPS satellite has an atomic clock and continually transmits messages containing the
current time and date at the start of the message send by the GPS itself.
I/A
