NorthStar MX500 Operator's & Installation Manual page 155

Configuration
Alarm For High HDOP:
HDOP Alarm Limit:
Alarm If No Update:
Version 3.0
This allows the receiver to create an alarm for HDOP values which
rise above a number that you determine. This indicates that posi-
tion accuracy is becoming bad, due to poor satellite geometry rela-
tive to your position and/or the number of satellites currently un-
der track. You may want to set the alarm to Yes if position accuracy
is critical to you. Otherwise this alarm is normally set to No.
Sets the HDOP value which will cause the alarm to sound. The
default value is 4. The valid range is from 1.0 to 9.9. The higher your
HDOP value, the more error you will have in your position fix. Refer
to the GPS1 Current Satellite Status section of this manual for
more information about the HDOP value.
This setting causes an alarm when you stop calculating a position
fix for a few seconds when set to Yes (default). A setting of No
disables the alarm when position fix can not be obtained.
Operator's Manual
141