Raymarine Raynav 780 User manual

Distributed by
Any reference to Raytheon or
RTN in this manual should be
interpreted as Raymarine.
The names Raytheon and RTN
are owned by the
Raytheon Company.

RAYNAV 780
LORAN C NAVIGATOR

“IMPORTANT NOTICE”
This device is only an aid to navigation. Its accuracy can be affected by many
factors including equipment failure or defects, environmental conditions, and
’ improper handling or use. It is the user’s responsibility to exercise common pru-
dence and navigational judgment. This device should not be relied on as a sub-
stitute.for such prudence and judgment.

PURPOSE
THIS MANUAL CONTAINS IMPORTANT INFORMATION ON THR IN-
STALLATION OPERATION AND MAINTENANCE OF
YOUR EQUIPMENT
RAYTHEON MARINE COMPANY products are supported by a network of
Authorized Service Representatives for product information you may contact the
following regional centers:
Western United States ........................Raytheon Marine Company **
152 1 So. 92nd Place
Seattle, WA 98108
Phone: [phone]
**AUTHORIZED FACTORY SERVICE and REPLACEMENT PARTS
DISTRIBUTION CENTER
Eastern United States ..........................Raytheon Marine Company
46 River Road
Hudson, NH 03051
Phone: [phone]
Europe ......................................................
.Raytheon Marine Sales &Service Co.
Siljangade 6
DK2300 Copenhagen S
Phone: [phone]
Far East ....................................................Marintech Co., Ltd.
Minato-Ise Building 3- 12- 1
Kaigandori Naka-ku
Yokohama, Japan
Phone: [phone]

TABLE OF CONTENTS
SECTION I GENERAL INFORMATION
1.1 Introduction ........................................ 1 - 1
1.2 Optional Equipment. ................................. 1 - 2
1.3 General Specifications ................................ 1 - 2
1.4 LoranC Terminology ................................. 1 - 5
SECTION II INSTALLATION
2.1 Unpacking and Inspection ............................. 2 - 1
2.1.1
“2.1.2 Equipment Supplied. .......................... 2 - 1
Optional Equipment. .......................... 2 - 2
2.2 Receiver Installation. ................................. 2 - 3
2.2.1 General ..................................... 2-3
2.2.2 Mounting the Receiver Unit ..................... 2 - 5
2.3 Antenna and Coupler Installation ........................ 2 - 7
2.3.1 Selecting the Location ......................... 2 - 7
2.3.2 Antenna Whip ............................... 2 - 8
2.3.3 Antenna Coupler :. ........................... 2 - 8
2.3.4 Mounting the Coupler ......................... 2 - 8
2.3.5 Whip Installation ............................. 2 - 11
2.3.6 Rugged Duty Antenna Coupler .................. 2 - 12
2.4 Connections ........................................ 2 - 15
2.4.1 Power ...................................... 2-1.5
2.4.2 Assembling the Coupler Connector ............... 2 - 16
2.4.3 Interface to External Navaids .................... 2 - 17
2.4.4 Grounding .................................. 2-18
2.5 System Checkout .................................... 2 - 20
2.5.1 TheKeyboard ............................... 2 -20
2.5.2 Status Indicators ............................. 2 - 22
2.5.3 The “Power Keys”. ............................ 2 - 24
2.5.4 Initializing the Navigator ....................... 2 - 24
2.5.5 Search Status ................................ 2 - 30
2.5.6 Signal Strength SNR Levels ..................... 2 - 3 1
2.5.7 ECD ....................................... 2-33
2.5.8 Oscillator Deviations .......................... 2 - 34
2.5.9 Shipboard Noise-Elimination Techniques ........... 2 - 35
_i-

SECTION III GENERAL OPERATIONS
3.1
3.2
3.3
3.4
3.5
3.6
3.1
3.8
The Power Keys ..................................... 3 - 1
3.1.1 Turning the Unit “ON” ........................ 3 - 1
3.1.2 Controlling the LCD Display and Keyboard
Brightness. .................................. 3 - 1
3.1.3 SLEEP mode key ............................. 3 - 1
3.1.4 ToTumtheUnit“OFF”. ...................... 3-l
Raynav 780 Operating Mode Switch ..................... 3 - 2
The Station Display Mode STA ......................... 3 - 3
3.3.1 Initialization. ................................ 3 - 3
3.3.2 Checking the Receiver ......................... 3 - 4
The Lat/Long Display Mode L/L. ....................... 3 - 5
3.4.1 CD1 Bargraph ................................ 3 - 5
3.4.2 Averaging Your Speed Display ................... 3 - 6
3.4.3 Averaging Your Lat/Long Display Readouts ........ 3 - 7
3.4.4 Magnetic Correction Operation .................. 3 - 9
3.4.5 Correcting Lat/Long Readouts ................... 3 - 10
3.4.6 “Home Port” Correction ....................... 3 - 10
3.4.7 Manual L/L Correction (ASF) ................... 3 - 11
TheTDDisplayMode TD .............................. 3 - 13
3.5.1 Automatic Correction (ASF) .................... 3 - 14
3.5.2 Manual TD Corrections ........................ 3 - 15
Entering Waypoints .................................. 3 - 16
3.6.1 General Waypoint Information ................... 3 - 16
3.6.2 Memorizing Your Current Position ................ 3 - 17
3.6.3 Saving Your Current Position .................... 3 - 18
The Waypoint Display Mode WPT ........................ 3 - 18
3.7.1 Direct L/L Entry ............................. 3 - 19
3.7.2 Direct TD Entry .............................. 3 - 20
3.7.3 EntrybyBearingandRange.. ................... 3-21
3.1.4 Entry by Save Memory. ........................ 3 - 22
3.7.5 Eliminating Old Waypoints. ..................... 3 - 22
The Route Display Mode RTE .......................... 3 - 23
3.8.1 Navigating with Waypoints ...................... 3 - 24
3.8.2 Organizing Routes ............................ 3 - 25
3.8.3 Automatic Route Sequence ..................... 3 - 27
3.8.4 By-Passing a Point ............................ 3 - 28
3.8.5 Re-starting a Route ........ .I ................. 3 - 28
3.8.6 Cancelling Route Sequence ..................... 3 - 28

3.9 Setting the Alarms ................................... 3 - 29
3.9.1 The Arrival Alarm ............................ 3 - 29
3.9.2 TheAnchorWatchAlarm.. ..................... 3 -31
3.9.3 The dffCourse Alarm ......................... 3 - 32
3.9.4 TheBoundaryAlarm .......... . ............... 3 -33
3.10 The Time Functions .................................. 3 - 34
3.10.1 UTC.. ..................................... 3-35
3.10.2 LOCAL .................................... 3-35
3.10.3 ETA.. ..................................... 3-35
3.10.4 Special Time Functions (STF) ................... 3 - 36
3.10.5 Countdown ................................. 3 - 36
3.11 The Special Function Display Mode SF ................... 3 - 37
3.11.1 SelectingDataOutput ......................... 3 -38
3.11.2 Selecting NM/KTS, SM/MPH, or KM/KPH .......... 3 - 39
3.11.3 RegisteredGRI’s ............................. 3-39
3.11.4 MasterReset.. ............................... 3-40
3.11.5 SoftwareLevel ............................... 3 -40
3.12 Specialized Operations ................................ 3 - 4 1
3.12.1 TheNotchFilters.. ........................... 3-41
3.12.2 SelectMode ................................. 3 -43
3.13 Extended Range Operation ............................ 3 - 43
3.14 Cross Chain Operation (Option) ......................... 3 - 45
3.14.1 ToUseCrossChain ........................... 3 -45
SECTION IV MAINTENANCE
4.1 General ............................................ 4 - 1
4.2 Replacing the Fuse ................................... 4 - 1
4.3 Replacing the Lamps ................................. 4 - 1
4.4 Replacing the Battery. ................................ 4 - 2
4.5 TCXO Calibration ................................... 4 - 2
SECTION V REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
APPENDIX
A BASIC LORAN THEORY . . . . . . . . . . . . . . . . . . . . . . . . . A - 1
B LORAN C CHAIN COVERAGE DIAGRAMS . . . . . . . . . B - 1
. WAYPOINT LOG PAGES
. WARRANTY REGISTRATION CARD
- 11, -

SECTION I
GENERAL lNFORMATlON
1.l INTRODUCTION
The RAYNAV 780 is a high performance, high quality Loran-C Navigator,
which is simple to operate from its front panel using the rotary function switch
and the 23-key input keyboard and is easy to read with its large backlit LCD
display. The LCD displays five lines of navigational data on a single page.
Once your estimated position from a chart of your area has been corre,ctly
entered the RAYNAV 780 will automatically lock-on and track the master and
up to five secondaries simultaneously. The computer will then calculate your
navigational data from the two selected secondaries, to provide present
position, speed over ground, course over ground, distance-to-go, and more.
The RAYNAV 780 with the Cross Chain Option will process the
navigational data using two chains, for those fringe areas where the single chain
loran receivers cease to track.
We are sure that the RAYNAV 780 will provide you with many years of
safe and trouble free LORAN navigational data.