R Raytheon Marine GmbH

High Seas Products

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D – 24100 Kiel
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Gyro Compass
STANDARD 20

Type 110 – 800, 110 – 804 and 110 – 806

Consisting of:
– Gyro Compass Casing with Outer Sphere, Type 110 – 222,
– Supporting Liquid, Type 148 – 162,
– Distilled Water, Type 148 – 398 and
– Gyrosphere, Type 111 – 006

OPERATOR MANUAL

2771E/110–800.DOC012 Edition: 24. Nov. 1999

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 Gyro Compass STANDARD 20 Technical
Operator Manual Documentation

CONTENTS Page

Safety Regulations
Declaration of Conformity acc. to EC Directive 96/98/EC

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Switching on the Gyro Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 Signalling during Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4 Speed Error Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.1 Speed–error Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5 Signalling in Case Warnings have occurred . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6 Signalling in Case an Alarm has occurred . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7 Switching off the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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 Gyro Compass STANDARD 20
Operator Manual

Safety Regulations

Caution!
• Maintenance and repair must be performed by trained and
qualified personnel who are knowledgeable in equipment
safety requirements!
• When the gyro compass is switched off, the rotors come to a
standstill not before a running–down time of approx. 15 to
30 min has elapsed. During this time, no intervention in the
gyro compass must be made.
The gyrosphere might be damaged !

• It is recommended that during times when the ship is in

harbour for up to one week, the gyro compass is not
switched off.

• If warnings occur, the function of the gyro compass equip-

ment is not restricted. Elimination of the causes in good
time prevents possible failures.
Please, inform authorized service personal!

2771E/110–800.DOC012 II Edition: 24. Nov. 1999

 Gyro Compass STANDARD 20 Technical
Operator Manual Documentation

1 General
The Gyro Compass STANDARD 20 provides an analog heading indication referred to true
north. Via an absolute, coded scanning and transmission system, it guarantees an absolute
and clear transmission of the compass heading reference via a serial interface to analog or
digital repeater compasses, autopilot or other periphery devices that are able to process the
serial interfaces of the compass.

Operator Manual
This operator manual contains all operating instructions as well as a survey of possible
warnings and alarms indicated on the digital display.

Service Manual
In addition to the operator manual a service manual is available. It contains:
– information about installation and first putting into operation
– information about maintenance and shipboard repair
– a description of the gyro compass STANDARD 20

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 Gyro Compass STANDARD 20
Operator Manual

The operating instructions for the entire gyro compass equip-

ment can be found in the main system description.
This operator manual is valid for the gyro compass types:
Type 110 – 800: normal gyro compass
Type 110 – 804: gyro compass with quick settle for the
equipment STANDARD 20 PLUS
Type 110 – 806: gyro compass without casing for mounting in
the steering stand ComPilot 20

2 Switching on the Gyro Compass

With switching–on the 24 V power supply, the gyro compass is put into operation.

3 Signalling during Operation

After switching on the gyro compass, the the digital display – visible through the window
in the supporting plate – indicates:
(The digital display of the gyro compass type 110 – 806 for steering stand ComPilot 20 is
visible by opening up the operator panel of the steering stand.)

Indications Comments, Notes

Heating Phase

During the heating phase, the temperature of the supporting

liquid is indicated.
For example:
h: heating phase
28.8 : 28.8 °C

 Settling Phase

After reaching the lower operating temperature of 45 °C:

– Automatical switching–on of the follow–up system by the
sensor electronics
– During a settling time of approx. 3h, the digital display indi-
cates the heading with a full stop behind the last position.

Course value still imprecise and not usable!

 Heading Indication

After terrmination of the settling procedure:

– Heading indication

Accuracy:
After approx. 3 hrs.: better 2°
After approx. 5 hrs.: better 0.1° x 1/cos latitude

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 Gyro Compass STANDARD 20 Technical
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4 Speed Error Correction

The speed error δ is the difference between the course indicated by the gyro compass and
the true course. The underlaying causes of this error, which is governed by the ship’s speed,
course and local latitude, are of the physical type.
This speed error must be corrected as described below.
For amount and sign of speed error, see Speed Error Table on the following pages.

The TRUE COURSE equals the compass course tak-

ing into account the correction value drawn from the
speed error table.
Pay attention to sign!

Example 1: Example 2:
compass course: 345° compass course: 223.7°
latitude: 55° latitude: 55°
speed: 16 kn speed: 16 kn
correction value from table: –1.7° correction value from table: +1.3°
true course: 345° – 1.7° = 343.3° true course: 223.7° + 1.3° = 225.0°

Example for a bearing:

compass course: 255°
latitude: 55°
speed: 16 kn
bearing: 135°
correction value from table: +0.5°
true bearing: 135° + 0.5° = 135.5°

Valid:
The TRUE COURSE is always ’west’ of the compass
course.

N
– –

compass course
W O
true course

+ +
S

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 Gyro Compass STANDARD 20
Operator Manual

4.1 Speed–error Table

northerly southerly
Latitude Courses in ° Speed in kn
in ° Sign of
Course Correction
– + 4 8 12 16 20 24 28 32 36 40 44
0 360 180 180 0.3 0.5 0.8 1.0 1.3 1.5 1.8 2.1 2.4 2.6 2.9
15 345 165 195 0.3 0.5 0.8 1.0 1.3 1.4 1.7 2.0 2.3 2.5 2.8
30 330 150 210 0.2 0.4 0.6 0.9 1.1 1.3 1.5 1.8 2.0 2.3 2.5
0
to 45 315 135 225 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1
20
60 300 120 240 0.1 0.3 0.4 0.5 0.7 0.8 0.9 1.1 1.2 1.3 1.4
75 285 105 255 0.1 0.2 0.2 0.3 0.4 0.4 0.5 0.5 0.6 0.7 0.8
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0
0 360 180 180 0.3 0.6 0.9 1.2 1.5 1.7 2.0 2.3 2.6 2.9 3.2
15 345 165 195 0.3 0.6 0.9 1.1 1.4 1.6 1.9 2.3 2.6 2.8 3.1
30 330 150 210 0.2 0.5 0.7 1.0 1.2 1.5 1.7 2.0 2.3 2.5 2.8

30 45 315 135 225 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.7 1.9 2.1 2.3

60 300 120 240 0.2 0.3 0.5 0.6 0.8 0.9 1.1 1.2 1.3 1.5 1.6
75 285 105 255 0.1 0.2 0.3 0.3 0.4 0.4 0.5 0.6 0.7 0.8 0.8
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0
0 360 180 180 0.3 0.7 1.0 1.3 1.7 2.0 2.3 2.7 3.0 3.3 3.7
15 345 165 195 0.3 0.7 1.0 1.2 1.5 1.9 2.2 2.6 2.9 3.2 3.5
30 330 150 210 0.3 0.6 0.8 1.1 1.4 1.7 2.0 2.3 2.6 2.9 3.2

40 45 315 135 225 0.2 0.4 0.7 0.9 1.2 1.4 1.6 1.9 2.1 2.4 2.6

60 300 120 240 0.2 0.3 0.6 0.7 0.9 1.0 1.2 1.3 1.5 1.7 1.8
75 285 105 255 0.1 0.2 0.3 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.9
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0
0 360 180 180 0.4 0.7 1.1 1.4 1.8 2.2 2.5 2.9 3.2 3.6 4.0
15 345 165 195 0.3 0.7 1.0 1.4 1.7 2.1 2.4 2.8 3.1 3.5 3.8
30 330 150 210 0.3 0.6 0.9 1.2 1.6 1.9 2.2 2.5 2.8 3.1 3.4

45 45 315 135 225 0.3 0.5 0.8 1.0 1.2 1.5 1.8 2.0 2.3 2.5 2.8

60 300 120 240 0.2 0.4 0.5 0.7 0.9 1.1 1.3 1.4 1.6 1.8 2.0
75 285 105 255 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.7 0.8 0.9 1.0
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0
0 360 180 180 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.3
15 345 165 195 0.4 0.8 1.1 1.5 1.8 2.2 2.6 3.1 3.4 3.8 4.2
30 330 150 210 0.3 0.7 1.0 1.3 1.6 2.0 2.3 2.7 3.1 3.4 3.8

50 45 315 135 225 0.3 0.6 0.8 1.1 1.4 1.7 2.0 2.2 2.5 2.8 3.1

60 300 120 240 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2
75 285 105 255 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0

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 Gyro Compass STANDARD 20 Technical
Operator Manual Documentation

northerly southerly
Latitude Courses in ° Speed in kn
in ° Sign of
Course Correction
– + 4 8 12 16 20 24 28 32 36 40 44
0 360 180 180 0.4 0.9 1.3 1.8 2.2 2.7 3.1 3.6 4.0 4.4 4.9
15 345 165 195 0.4 0.9 1.3 1.7 2.1 2.6 3.0 3.4 3.9 4.3 4.7
30 330 150 210 0.4 0.8 1.1 1.5 1.9 2.3 2.7 3.1 3.5 3.8 4.2

55 45 315 135 225 0.3 0.6 0.9 1.3 1.6 1.9 2.2 2.5 2.8 3.1 3.5

60 300 120 240 0.2 0.4 0.7 0.9 1.1 1.3 1.6 1.8 2.0 2.2 2.4
75 285 105 255 0.1 0.2 0.3 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.3
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0
0 360 180 180 0.5 1.0 1.5 2.0 2.5 3.1 3.6 4.1 4.6 5.1 5.6
15 345 165 195 0.5 0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4
30 330 150 210 0.4 0.8 1.3 1.7 2.1 2.6 3.1 3.5 4.0 4.4 4.9

60 45 315 135 225 0.4 0.7 1.1 1.4 1.8 2.2 2.5 2.9 3.2 3.6 4.0

60 300 120 240 0.3 0.5 0.8 1.0 1.3 1.5 1.8 2.0 2.3 2.5 2.8
75 285 105 255 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1.1 1.2 1.3 1.5
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0
0 360 180 180 0.6 1.2 1.8 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.7
15 345 165 195 0.6 1.2 1.7 2.3 2.9 3.5 4.1 4.7 5.2 5.8 6.4
30 330 150 210 0.5 1.0 1.6 2.1 2.6 3.1 3.6 4.2 4.7 5.2 5.7

65 45 315 135 225 0.4 0.9 1.3 1.7 2.1 2.6 3.0 3.4 3.8 4.3 4.7

60 300 120 240 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3
75 285 105 255 0.2 0.3 0.5 0.6 0.8 0.9 1.1 1.2 1.4 1.6 1.7
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0
0 360 180 180 0.7 1.5 2.2 3.0 3.7 4.5 5.2 6.0 6.7 7.5 8.2
15 345 165 195 0.7 1.4 2.2 2.9 3.6 4.3 5.0 5.8 6.5 7.2 7.9
30 330 150 210 0.6 1.3 2.0 2.6 3.2 3.9 4.5 5.2 5.8 6.5 7.1

70 45 315 135 225 0.5 1.1 1.6 2.1 2.6 3.2 3.7 4.2 4.7 5.3 5.8

60 300 120 240 0.4 0.7 1.1 1.5 1.9 2.2 2.6 3.0 3.4 3.7 4.1
75 285 105 255 0.2 0.4 0.6 0.8 0.9 1.2 1.4 1.5 1.7 1.9 2.1
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0
0 360 180 180 1.0 2.0 3.0 3.9 4.9 5.9 6.9 7.9 8.9 9.9 10.9
15 345 165 195 0.9 1.9 2.9 3.8 4.8 5.7 6.7 7.6 8.6 9.5 10.5
30 330 150 210 0.8 1.7 2.6 3.4 4.3 5.1 6.0 6.8 7.7 8.6 9.4

75 45 315 135 225 0.7 1.4 2.1 2.8 3.5 4.2 4.9 5.6 6.3 7.0 7.7

60 300 120 240 0.5 1.0 1.5 2.0 2.5 3.0 3.4 3.9 4.4 4.9 5.4
75 285 105 255 0.3 0.5 0.8 1.0 1.3 1.5 1.8 2.0 2.3 2.5 2.8
90 270 90 270 0 0 0 0 0 0 0 0 0 0 0

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 Gyro Compass STANDARD 20
Operator Manual

5 Signalling in Case Warnings have occurred

After one or more warnings have occurred,

the decimal point is flashing as long as the
warning is pending.

Decimal point

If warnings occur, the function of the gyro compass

equipment is not restricted. Elimination of the causes in
good time prevents possible failures.
Please, inform authorized service personal!

6 Signalling in Case an Alarm has occurred

Errors, which have occured within the gyro compass STANDARD 20, are indicated in the
digital display as an alarm; the follow–up system is switched off, the gyro compass supplies
no course values, all connected indicators follows the course change no more!

Immediately take the following measures

– switch–over to redundant operating modes (other gyro compass, if possible;
operation with magnetic compass)
– contact Raytheon Anschütz Service.

An alarm, which has occured, is indicated in the digital display by an ’E’ (as Error) and

by a numeral, for example:

Following errors are indicated:

E1: Operating voltage in compass is faulty E6: Temperature sensor breakdown
E2: Gyro supply faulty E7: Height of gyrosphere outside of tolerance
E3: Encoder faulty E8: Breakdown in heating
E4: Gyro current faulty E9: Overtemperature >70°C
E5: Follow–up faulty

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 Gyro Compass STANDARD 20 Technical
Operator Manual Documentation

7 Switching off the Sensor

The gyro compass sensor is put out of operation by switching off the 24 V power supply.

Caution!
The gyro rotors only come to a standstill after a run–
down time of approx. 15 – 30 min after the gyro com-
pass has been switched off. During this time the gyro
compass must not be opened for service or similar.
Gyrosphere might be damaged!

It is recommended that during times when the ship is

in harbour for up to one week, the gyro compass is
not switched off.

Edition: 25. Febr. 1997 7 2771E/110–800.DOK012

 Gyro Compass STANDARD 20
Operator Manual

2771E/110–800.DOK012 8 Edition: 25. Febr. 1997