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: 206-763-7500

**AUTHORIZED FACTORY SERVICE and REPLACEMENT PARTS

DISTRIBUTION CENTER

Eastern United States

. . . . . . . . . . . . . . . . . . . . . . . . . . Raytheon

Marine Company

46 River Road

Hudson, NH 03051

Phone: 603-881-5200

Europe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.Raytheon Marine Sales &Service Co.

Siljangade 6

DK2300 Copenhagen S

Phone: +45-31-57 06 11

Far East . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Marintech

Co., Ltd.

Minato-Ise Building 3- 12- 1

Kaigandori Naka-ku

Yokohama, Japan

Phone: 045-212-3633

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.

1.2 OPTIONAL EQUIPMENT

Console Mounting Kit

M56759

Rugged Duty Antenna Coupler

AW-757 (M95953)

Other options are listed in the installation section of this manual

1.3 GENERAL SPECIFICATIONS

1.3.1 General

Frequency:

Dynamic Range:

Acquisition SNR:

TD Measurement:

GRI Selection:

Secondary Selection:

Secondaries Tracked:

ASF Correction:

Compass Correction:

Position Memories:

Save Memories:

Antenna Coupler:

Antenna:

Notch filters:

Alarms:

Data Outputs:

Data Output Rate:

Data Input:

Misc. Outputs:

Sleep Mode:

1 OOKHz

120dB

-2OdB

Fully comply with RTCM MPS

Automatic/Manual, Optional Cross chain

operation available

Automatic/Manual

All available (up to 5 secondaries)

Automatic ASF correction and Manual from

front panel. (Type 1 of RTCM MPS)

Automatic correction and Manual from

front panel.

Up to 100 (internal battery back-up)

Up to 10 (temporary)

Active preamplifier

2m to 3m whip required (not supplied)

6 automatic notch filters & 1 preset

Selective condition of Waypoint Arrival,

Cross Track Error, Anchor watch.

Selectable via keyboard: NEMA 01 SO/

0182,0183 and JRC standard. 2 Ports

NMEA 0183 includes GLL, GTD, VTG,

APA, BWC, RMA, and RMB.

Every 2 seconds for RMA and RMB; every

4 seconds for all other data.

(for future option of differential Loran C

operation)

1 OMHz External oscillator (for Range/

Range operations)

Loran maintains tracking, Display/back-

lighting is turned off. (Power reduced to

5 W approx.)

l-2

Dimmer:

Display Type:

Display Size:

Character Size:

Controls:

Displayed Data

Type of data:

Lat/Long:

TD Pair:

Stations:

Waypoints:

Bearing & Range:

Trip Distance:

Time to Go:

Speed & Course :

SNR’s:

Cross Track Error:

Time Functions:

Corrections:

LCD Display/keyboard, auto or manual (in

8 levels).

Custom 7 segment LCD, 5 line.

93 x 78mm

14mm (0.55”)

Via rotary switch and tactile keypad

N or S + 6 digits, .O 1 min resolution

E or W + 7 digits, .Olmin resolution

6 digits, .l ns resolution or 7 digits, .Ol ps

resolution (selectable)

All GRI and Secondaries

Lat/Long and TD pairs displayed. Auto

route sequencing available.

Bearing & Range to waypoint

Total distance from present position to end

of route.

Remaining time to WPT at current speed

1) SOG & COG calculated from L/L

position changes. (Averaging period

selectable)

2) Velocity towards destination

3) Velocity along route

4) Course made good

SNR and ECD of master and selected

secondaries.

XTE (offset) from current route leg in

.Olnm increments, digital or bargraph.

Standard clock with date/time in UTC or

‘Local; Stop watch, Timer. Continuous

operation via internal battery.

1) Magnetic Variation, Auto/manual

2) Position Offset (ASF) via;

a. Auto DMA ASF program

b. Auto “Homeport” correction

c. Manual entry for L/L to TD’s

1-3

Warning Indicators:

Co-ordinate Conversion:

Interference:

Power:

Memory Protection:

1.3.2 Mechanical

Main Unit

Rear Panel Connections:

Dimensions:

Weight:

Temperature:

Antenna Coupler

Cable Type:

Cable Length:

Dimensions:

Weight :

Temperature:

Rugged-Duty

Antenna Coupler

Cable Type:

Cable Length:

Dimensions:

Weight :

Temperature:

Low SNR, Blink, Cycle selection, no L/L

solution. On-screen and audible alert for

Arrival, XTE, or Anchor watch alarms.

Off-line from L/L to TD; TD to L/L

Display level and interference and notch

filter set points.

lo-45 VDC, Less than 9 watts

Internal Memory backup Lithium battery

3-5 years.

A)

Power Connector, 2 Pin metal

B)

Data 1, Data 2 output, BNC corm.

C)

Antenna Coupler, RF corm.

D)

Data Input, BNC corm.

E)

External Oscillator 1OMHz

F)

Ground

12.0 H x 23.5 W x 11.6 D cm (less

mounting yoke)

(4.8 H x 9.3 W x 4.6 D inches)

3 Kg. Approximately

0°C to +5O”C (32°F to 122°F)

3C-2V, 75 ohm co-axial, white pvc

15 meters (49 ft)

190 H x 60 W mm (7.5” x 2.4”)

0.9 kg (with cable)

-20°C to +7O”C (-4°F to +158”F)

CFQ-3050 (3C-2V, 75 ohm co-axial),

15 meters (49 ft)

268.5 H x 64 W mm (10.6” x 2.6”)

1 kg (without cable)

-20°C to +7O”C (-4°F to +158”F)

l-4

1.4 LORAN C TERMINOLOGY

Below are some of ihe common terms used with Loran C along with brief

definitions.

ASF

CHAIN

Additional Secondary Factor; the amount of offsets

used in calibrating the lorans lat/long readouts to

agree with the navigation chart.

Refers to a group of Loran C transmitters, one of

which is designated as the master transmitter, and up

to five secondary stations which transmit in precise

timing sequentially in a designated geographic area.

COG

COUPLER

Course-OverCround, this is the actual direction of

your vessels movement over the ground computed by

the loran.

Part of the loran antenna system, the coupler

amplifies and filters the loran signals for the receiver

unit.

CYCLE MATCH

The process of finding an exact point of the incoming

loran C signals to measure for precise timing. This

point is typically at the 3rd cycle of each received

signal.

l-5

ECD

GRI

LATITUDE

LONGITUDE

LOP

MASTER

MICROSECOND

SECONDARY

SNR

SOG

TD

VARIATION

WAYPOINT

XTE

Envelope-to Cycle Difference, this is a technical

measurement of the shape of the incoming signals to

determine the probability of a correct cycle match.

Group-Repetition-Interval, this refers to the assigned

precise timing interval in which the loran chain must

perform its sequential transmissions. Measured in

microseconds, the GRI timing is used to identify the

loran chains worldwide. (99,600ns = 9960 GRI)

Angular measure in degrees North (0 - 90”) and

South (0 - 90”) from the Equator. On a chart these

lines are drawn from right to left.

Angular measure in degrees (0 - 180”) East and West

of the prime meridian (0”) at Greenwich, England.

On a chart these lines are drawn from top to bottom.

Line-Of Position, refers to a line made up of points

where the time measured between the receipt of the

master signal and a secondary station is always the

same. Loran LOP’s are frequently printed on the

marine charts and are otherwise known as Time

Difference Lines or TD’s.

In a loran chain, the Master station initiates the trans-

mitting sequence.

In loran C, the basic unit of time measurement of the

loran signals.

Any station in a loran chain other than the Master.

Signal-to-Noise Ratio, the measurement of the

received signal’s strength related to the background

noise comming into the loran receiver.

Speed-Over-Ground, this is the calculated rate of

movement of the vessel over the ground.

Time Difference, refers to the elapsed time in micro-

seconds between the arrival of the master and a

secondary signal in a loran receiver.

In loran, refers to the difference in degrees between

“True North” and “Magnetic North.”

Geographical destination defined in the loran

memories as a Latitude/Longitude position.

Cross-Track-Error, this is the calculated deviation

from a track line drawn from the origination point to

the destination waypoint retained in the loran’s

memory.

SECTION II

-INSTALLATION

Although your Raynav 780 is designed to the highest levels of quality and

performance, it can best attain those standards when a proper installation of the

equipment has been achieved.

This section provides the user with practical guidelines to assist in the planning

and installation of the Raynav 780 aboard your vessel.

2.1 UNPACKING AND INSPECTION

Do use care when unpacking the unit from shipping carton to prevent

damage to the contents. It is also good practice to save the carton and the

interior packing material until the unit has been statisfactorily installed on the

vessel. The original packing material should be used in the unlikely event

that it is necessary to return the unit to the factory.

2.1.1 Equipment Supplied

Table 2.1 indicates a listing of items that are included with your New Loran.

A. Standard Conilgulation

Table 2.1 Equipment Supplied

No. Description

Type Q’ty

Remark

1 Receiver Indicator

NNR-757R

1

2 Antenna Coupler with

1.5 m AW-787

1

(49 FT) Coaxial Cable

3 Coaxial connector

83-58FCP

1

4 Spare part

Fuse ( 2A)

MF5 lNR-2A

3

5 DC cable/Corm.

power

CFQ-2541

1

6 Yoke for Raynav 780

MPBX 16814 1

1

I7 I

Yoke knob

( BRHD 00400

I 2 I

8

Instruction Manual

DC5 I-JNA-757R 1

9

Bridge card

DC80-JNA-757R 1

If you are missing any of the items. Please notify your Dealer immediately.

B. Rugged-duty Coupler Contigulation

When shipped for Europe, the coupler has been replaced with heavy duty

coupler type AW-757, and the JRC brand will be added to the receiving unit.

The items 2 and 3 in the list of the equipment supplied for standard

contigulation will be replaced with following items.

No.

Description

Type I Q’ty I

Remark

Antenna Coupler

without coaxial cable

Coaxial Cable

AW-757

CFQ-3050

1 Rugged-duty

15m

50 FT

12

Coaxial Connectors

83-58FCP

2

13

Fitting Band

BRBP00389

2

14

SUM1 TAPE

9645

1

15

Sticker for Co-Brand

1

C. Cross Chain Operation Option

When installed with Cross Chain Operation option at the factory, the

receiver indicator will have a sticker of cross chain indication on its rear side.

Please refer to sec. 3.14.

2.1.2 Optional Equipment

Table 2.2 lists some of the accessory items available from your Dealer for

your Loran installation.

Table 2.2 Optional Equipment

I

Description Product Code

1151220 Vat Power Supply

120 Vdc Power Supply

Console Mounting Kit

Rugged Duty Coupler (AW-757)

Antenna Mounts:

M94052

M94054

M56759

M95953

9 ft. extension Mast

M68454

Deck Mount, AM7W

M6920 1

Deck Mount, rachet, AMl8C

M69761

Deck Mount, AMl8CO

M94552

8’ Whip Antenna, M75

M68453

2-2

2.2 RECEIVER INSTALLATION

2.2.1 General

Even though your new Raynav 780 Loran C has been designed to survive

tough environmental conditions, it makes good common sense to give it as

much protection as possible to prolong its lifespan. The following suggestions

are ilirected toward that end.

r P%

211

1

l Avoid storing the Loran in locations where

the LCD will be exposed to direct sunlight

for prolonged periods, or where the unit

will be subjected to (over 50°C) excessive

heating.

L

J

l If locating the Loran in an open environ-

ment where the unit may be subjected to

water spray, rain or condensation, clean

the unit promptly after use and provide

protective covering for storage.

1

.

l Keep the Loran separated from radios.

radars, TV sets, fluorescent

antenna systems as much as

reduce potential interference.

8’ or 9’

WhiQ Antenna

n

AllfSlllla

Coupler

lights, and

possible to

Select a mounting location away from

magnetic influence (compass, speakers,

minimotors, etc., as the electronic circuits

may be influenced adversely.

Data to Autopilot

Plotter etc

t

Figure 2.1 Typical System Diagram

2-3

2OOmm

385 mi”

15.2”

Figure 2.2 Recommended Minimum Clearances for Yoke Mounting

235

243

276

=I

Unit: mm

5-,$7 MOUNTING HOLES

Figure 2.3 Outline Dimensions

2-4

2.2.2 Mounting the Receiver Unit

The most important considerations for mounting the receiver will be in order:

A. Best location for operation and viewing.

B. Most practical use of available vessel space.

C. Best protection afforded to the Loran unit.

D. Furthest separation from interfering sources.

Typically the Loran receiver can be mounted in its yoke assembly to a

counter top or suspended from an overhead location.

In addition, the unit is so compact that you may choose to flush mount

the unit using the Optional Console Mounting Kit M56759.

MTB166722A 1PC

BRTG01652 2PCS

BRTG03002 2PCS

@SPRING WASHER BSSWOGOOOS ZPCS

@TAPPING SCREW BRTG03940 6PCS

q!E WASHER by Force

ZPCS

Remove Flubber Pads

Figure 2.4

Console Mounting Kit M56759

2-5

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Raymarine Raynav 780 User manual

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