NorthStar Navigation GM1708 961X User Manual

SECTION TWO - Installation

Page 36

961 INSTALLATION MANUAL Revision A

PROCESSOR 
(cont’d)
Configuration

No GPS or DGPS

Possible incorrect installation of the 
AS110/AS105 splitter cables; they 
may be reversed at the splitter for the 
GPS and differential output ports 
going to the 961XD processor. 

For verification and troubleshooting of 
the antenna system, see Table 3, 
“Troubleshooting the GPS/DGPS 
antenna installation,” on page 39. 

The 961XD processor BIOS may be 
improperly configured. This normally 
wouldn’t occur unless the BIOS mem-
ory battery has failed or the BIOS set-
tings were intentionally changed. 
Consult with the Northstar Service 
Department for information on how to 
troubleshoot and correct this problem. 

There’s no DGPS indicator on the Chart 
screen, and:

The BEACON RX SELF-TEST AND SOFT-
WARE message says 

FAILED (p

ress the 

 key to access the SERVICE MENU 

screen, then press the 

key).

Wait 30 minutes after start-up (only if 
a new unit). 

Check for an open or shorted bea-
con-antenna cable connector.

Check for proper ground.

The Northstar 8410 ACI or the 961 
processor may be defective; call the 
Northstar Service Department.