3000LRS DGPS RECEIVER
OPERATOR’S MANUAL
A Product of the Fugro Group of Companies
Issue 2.00 JUNE 2003
B11203400PMBRA0 / 27
Frequently Asked Questions
Q-What is the power consumption of the Seastar receiver?
A-
The average power consumption is as follows:
250-500 mA @ 12 VDC or 125-250 mA @ 24 VDC
Q
-
How can I tell that my receiver is locked onto the satellite?
A
-The signal quality (number of black bars on the display) should be higher then
4. On a normal installation you will see approx. 6-8 bars. The receiver will operate
with a minimum signal quality of 3.
In addition the power level can be checked in the Current Reading Menu of the
receiver. The power level should be somewhere between -80 and -120 dBm.
Q-Why does my receiver not want to lock onto a satellite?
A
-Check that the antenna and antenna cable are connected to the receiver.
Check the Channel Selection menu to verify that the unit is operating on the
correct satellite. This can be verified in the back of the operator’s manual.
Q-My receiver seems to be locked on, but why do I get an ‘EXPIRE’
message on the display?
A
-The receiver’s subscription is expired. Contact FSAS for the unit to be re-
enabled.
Q-My receiver seems to be locked on but why do I get a ‘SRVICE’ message
on the display?
A
-You have locked onto a satellite for which your unit has not been enabled.
Contact FSAS to rectify this problem.
Q-My receiver was working OK, but why do I suddenly get an ‘OUTRNG’
message on the display and my GPS receiver is not working in differential
mode anymore.
A
-This indicates that you are operating outside your subscribed region. The
receiver is not outputting corrections anymore.
Q-I have changed to another satellite using the channel selection menu.
The Seastar receiver locked on immediately, but why doesn’t my GPS
receiver go to differential mode?
A
-The Seastar receiver need to update it’s internal tables with reference station
information sent over the new satellite. This can take up to 30 minutes before the
Seastar receiver will output corrections and you GPS receiver will go into
differential mode.
Q-Why does the Seastar receiver require a position input from my GPS
receiver?
A
-If the Seastar receiver receives a position input from the GPS receiver it can
then compute optimised RTCM corrections for the present location which will
improve the accuracy of the system.