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NorthStar Navigation 961X, 961XD Table 3: Troubleshooting the GPS/D GPS antenna installation

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SECTION TWO - Installation

961 INSTALLATION MANUAL Revision A Page 39

Table 3: Troubleshooting the GPS/D GPS antenna installation

Antenna Symptom Possible Solutions/Reasons

GPS ANTENNA Poor or no GPS signal while using the

AN150 antenna.

If 5.5 VDC low or missing with load con-

nected:

If 5.5 VDC low is missing with load discon-

nected:

If 5.5 VDC is present:

•Turn off any onboard transmitting

devices.

•Check for 5.5 VDC at antenna with

and without antenna load connected.a

•Check for 5.5 VDC at 961 processor

BNC connector (1710 board).

•It indicates a bad connector installa-

tion, bad 1710 board, or bad AN150

antenna.

•It indicates a bad 1710 board.

Replace the 1710 board.

•It indicates a bad AN150. Replace the

AN150.

DGPS ANTENNA No GPS or DGPS •Bad splitter configuration.b

•Splitter cables may be reversed for

GPS and DGPS output.

DGPS ANTENNA

(cont’d)

Poor or no GPS signal while using the

AN205-P antenna with splitter:

If 7.75 VDC is low or missing with load con-

nected:

If 7.75 VDC is low or missing with load dis-

connected:

If 7.75 VDC is present at processo r UHF

connector but not at antenna:

•Check installation for correct cabling.

•Check for 7.75 VDC at antenna with

and without antenna load (cables and

splitter) connected.c (Use “T” connec-

tors to measure VDC under load.)

•Check for 7.75 VDC at 961 processor

UHF connector.

•It indicates a bad connector installa-

tion, bad 1710 board, bad AN2xx. The

load is too great or the 1710 board is

defective.

•It indicates a bad 1710 board.

•It indicates bad cabling, bad connec-

tors, or a bad splitter.

Contents

Main Page Limited warranty policy Page Contents Page Figures Page Tables Page SECTION ONE - Introduction Wel co me Who should read this manual Scope of this manual Getting technical support Table 1: Contacting Northstar Hearing from you Servicing the unit Returning a unit for service Page SECTION TWO - Installation T Safety considerations System overview Installation considerations Ensuring a proper 961 installation Avoid ing shortcuts Using the GPS antenna (AN150) Page Choosing a system location Mounting the control head Yoke mounting Page Flush mounting Figure 3: 961 control head flush-mount drilling dimensions processor Processor installation tips Wiri ng the 961 Page Connecto rs Installing the antenna Choosing an antenna Choosing an antenna location Choosing the AN150 antenna location Figure 5: Separation distances between antennas Choosing the AN205-P combination antenna location About the antenna cabling AN150 antenna Figure 6: GPS-only antenna (AN150) Wiring the AN150 antenna ANTENNA CAPTIVE SCREW Mounting the AN150 antenna O-RING ADAPTER Figure 7: Stripping the coax cable jacket Figure 8: Flared cable braid Figure 9: Completed BNC connector AN205-P antenna Figure 10: Combo GPS/ DGPS antenna (AN205-P) Wiring the AN205-P antenna 2.5 Figure 11: Correct AN205-P (combo antenna) splitter wiring Mounting the AN205-P antenna Figure 12: Stripping the coax cable jacket Figure 14: Completed TNC connector Figure 13: Flared cable braid Installing an 8410 ACU (for use with the AN150 only) Mounting the 8410 Figure 15: ACU assembly Figure 16: Correct AN150 and 8410 wiring RF grounding Differential GPS antenna cable connectors Turning the unit on and off Page Figure 20: Owners message screen Adviso ry message Figure 21: Advisory message For new units only GPS si gna ls GPS receiver status summary Figure 22: GPS satellite status screen Lat/lon coordinates SOG and COG Loran-C TDs About auto-dimming mode Tur ni ng th e u ni t off Testing and troubleshooting the 961 Troubleshooting common installation problems Table 2: Troubleshooting the installation Set the TEST-POWER Page Page STAR THE DGPS STATUS SEARCHING Troubleshooting the GPS/DGP S antenna installation Table 2: Troubleshooting the installation (continued) NOTE: Table 3: Troubleshooting the GPS/D GPS antenna installation Antenna Symptom Possible Solutions/Reasons Table 3: Troubleshooting the GPS/DG PS antenna installation (continued) Table 3: Troubleshooting the GPS/DG PS antenna installation (continued) Antenna Symptom Possible Solutions/Reasons Table 4: Troubleshooting the radar interface Component Symptom Possible Solutions/Reasons Table 4: Troubleshooting the radar interface (continued) Component Symptom Possible Solutions/Reasons Page SECTION THREE - Interfacing T Figure 23: Interface cabling wiring screen Interfacing the unit Connecto r pin wiring Configuring the NMEA output ports Table 5: Interface cable wiring Figure 24: Port 1 output setup screen Table 6: Port setup options Parameter Options Setting the output format About NMEA 0183 and RAY 0183 Displaying NMEA output sentences Figure 25: Port 1 output setup (sentences) screen About the NMEA TLL sentence Table 7: NMEA 0183 sentence identifiers Modifying NMEA output sen tences Table 7: NMEA 0183 sentence identifiers Figure 26: Port 1 output setup screen Choosing the NMEA 0183 talker ID Setting NM EA 0183 l at /lo n precision 60 feet) foot) Changing the output rate Changing the NMEA 0183 waypoint I D Setting the auxiliary port Figure 27: Auxiliary port setup screen Table 8: Aux port setup parameters Aux port format Diagnostics Figure 28: PPNM output setup screen Port off Setting PPNM Table 9: PPNM output setup parameters Using VGA output SECTION FOUR - Service/Maintenance Service functions Viewing product information Figure 29: Product information screen Viewing head 1 serial number and software revision Configuring the receivers Figure 30: Receiver information screen Changing GPS speed averaging value Adjusting satellite elevation Viewing the GPS software version Setting DGPS operation Setting beacon frequency and baud rate Viewin g GPS status Figure 31: GPS satellite status screen Changing port setup Saving and restoring databases and system logs Saving and restoring a 961 database Figure 32: Database function screen Figure 33: Select database to save dialog box Figure 34: Select database to restore dialog box Figure 35: Select a restored database to undo dialog box Saving log data Figure 36: Save log data dialog box Maintenance functions Cleaning the 961 Installing 961 software updates APPENDIX A - Technical Specifications Northstar 961 Power GPS re cei ver Interfacing Physical features Control head Processor Environmental Processor Internal beacon receiver specifications (961XD) Signal processing Data processing Power AN150 Acti ve GPS Ant enna 8410 Antenna Coupling Unit AN205-P GPS/ DGPS antenna