Simrad argus Manual

ENGLISH
ARGUS RADAR
SYSTEM
Installation & Service Manual
navico-commercial.com

Argus Radar - Installation and service manual
RECORD OF CHANGES
Part number/Rev.
Date
Purpose of change
Requested by
988-10187-001 September 2011 First issue
988-10187-002 December 2013 Software release 3.2 M. Carmagnini
988-10187-003 October 2014 Software release 3.2.5 M. Carmagnini
988-10187-004 October 2016 Software release 3.3.2 M. Carmagnini
MANUAL TABLE OF CONTENTS
Warnings
Chapter 1 INSTALLATION AND SETTINGS
Chapter 2 SERIAL INTERFACE SPECIFICATIONS
Chapter 3 RADAR CONFIGURATION
Chapter 4 DEBUG AND SIMULATION FACILITIES
Chapter 5 TROUBLESHOOTING
Chapter 6 Annex A
Chapter 7 Annex B
Chapter 8 Annex c

Argus Radar - Installation and service manual
TABLE OF CONTENTS
CHAPTER 1 Installation and settingS..................................................................... 1.1
1.1 GUIDELINES FOR THE INSTALLATION OF SHIPBORNE RADAR EQUIPMENT .................... 1.1
1.2 INTERFERENCE ...................................................................................................................... 1.1
1.2.1 Location relative to masts, funnels and other constructions ...........................1.1
1.2.2 Blind sectors and range...........................................................................................1.2
1.2.3 Interaction with sea and false echoes......................................................................1.3
1.2.4 Cables and grounding .............................................................................................1.3
1.2.5 Radar controls and display......................................................................................1.4
1.3 SYSTEM SPECIFICATIONS ..................................................................................................... 1.5
1.3.1 Dimension and Weight.............................................................................................1.5
1.3.2 Power.......................................................................................................................1.5
1.3.3 Environmental Data ................................................................................................1.5
1.4 INPUT/OUTPUT REQUIREMENTS .......................................................................................... 1.6
1.5 ANALOGUE GYRO COMPASS (SYNCHRO OR STEPPER).................................................... 1.7
1.6 SERIAL GYRO ....................................................................................................................... 1.10
1.7 SPEED LOG........................................................................................................................... 1.10
1.8 EPFS ...................................................................................................................................... 1.11
1.9 AIS......................................................................................................................................... 1.11
1.10 BAM ...................................................................................................................................... 1.11
1.11 VDR CONNECTION .............................................................................................................. 1.12
1.12 RADAR CONSOLE FAILURE OUTPUT ................................................................................. 1.13
1.13 CONFIGURATION LINKS TABLE ......................................................................................... 1.13
1.13.1 Antares PCB Links: ...............................................................................................1.13
1.13.2 Alpha PCB Links: ..................................................................................................1.13
1.13.3 Alpha Expansion PCB Links: ................................................................................1.15
CHAPTER 2 SERIAL INTERFACE SPECIFICATIONS............................................. 2.1
2.1 SERIAL LINE 1, HEADING...................................................................................................... 2.1
2.2 SERIAL LINE 2, AIS ................................................................................................................ 2.3
2.3 SERIAL LINE 3, EPFS -GPS................................................................................................. 2.10
2.4 SERIAL LINE 4 ...................................................................................................................... 2.28
2.5 SERIAL LINE 5 ...................................................................................................................... 2.30
2.6SERIAL LINE 6 ...................................................................................................................... 2.31
2.7 SERIAL LINE 7 ...................................................................................................................... 2.32
2.8 SERIAL LINE 8 ...................................................................................................................... 2.33
CHAPTER 3 RADAR CONFIGURATION .................................................................. 3.1
3.1 HOW TO ACCESS THE RADAR CONFIGURATION................................................................. 3.1
3.1.1 Radar Configuration................................................................................................3.1
3.2 GYROCOMPASS CONFIGURATION........................................................................................ 3.3
3.3 SPEED LOG CONFIGURATION .............................................................................................. 3.5
3.4 OWN SHIP DIM.AND WEIGHT .............................................................................................. 3.6
3.5 CONNING AND EPFS POS.CONFIGURATION MENU ........................................................... 3.7
3.6 UNCONVENTIONAL SENSOR CFG......................................................................................... 3.8
3.7 ANTENNA SETTINGS.............................................................................................................. 3.9
3.7.1 Adjustment of Azimuth Type (PPR Selection)........................................................3.10
3.7.2 Adjustment of the heading line ..............................................................................3.11
3.8 TXRX SETTINGS .................................................................................................................. 3.12
3.8.1 Transceiver Communication Type .........................................................................3.13
3.8.2 Transceiver Communication Type .........................................................................3.13
3.8.3 Performance Monitor Adjustment .........................................................................3.14
3.8.4 Tuning Adjustment.................................................................................................3.15
3.8.5 Magnetron timer reset ...........................................................................................3.15
3.8.6 Digital potentiometers reset...................................................................................3.15
3.9 VIDEO TRIGGER ADJUSTMENTS......................................................................................... 3.16
3.9.1 Video Adjust Mode.................................................................................................3.17
3.9.2 Adopted communication configurations ................................................................3.17

Argus Radar - Installation and service manual
3.9.3 Trigger Delay ........................................................................................................3.18
3.9.4 QV (Quantized Video) Threshold ..........................................................................3.19
3.10 SECTOR BLANKING ............................................................................................................. 3.19
3.11 SYSTEM CONFIGURATION .................................................................................................. 3.21
3.11.1 Display settings (Fig 3.11.1 -A)............................................................................3.21
3.11.2 IP Address (Fig 3.11.1 -B)....................................................................................3.24
3.11.3 MAC Address (Fig 3.11.1 -C)...............................................................................3.25
3.11.4 TXRX Associated by Default (Fig 3.11.1 – D).......................................................3.25
3.11.5 General info (Fig 3.11.1 – E) ................................................................................3.25
3.11.6 Additional Functions (Fig 3.11.1 – F)...................................................................3.26
3.12 RESTART BUTTON................................................................................................................ 3.27
3.13 USB MENU (FIG 3.1.2-N) ..................................................................................................... 3.28
3.13.1 Save Screenshots....................................................................................................3.30
3.13.2 Saving and reloading maps ...................................................................................3.30
3.13.3 File configuration ..................................................................................................3.31
3.13.4 System log files ......................................................................................................3.31
3.14 STORED PARAMETERS ........................................................................................................ 3.32
3.15 SOFTWARE UPGRADE.......................................................................................................... 3.33
CHAPTER 4 DEBUG AND SIMULATION FACILITIES............................................. 4.1
4.1 GENERAL INFORMATION ...................................................................................................... 4.1
CHAPTER 5 TROUBLESHOOTING.......................................................................... 5.1
5.1 INTRODUCTION ...................................................................................................................... 5.1
5.1.1 Safety Precautions ...................................................................................................5.1
5.1.2 Personnel.................................................................................................................5.1
5.2 REQUIRED TOOLS AND INSTRUMENTS ............................................................................... 5.1
5.3 CORRECTIVE MAINTENANCE PROCEDURES....................................................................... 5.2
5.4 CORRECTIVE MAINTENANCE PROCEDURES ON DISPLAY CORE UNIT .......................... 5.3
5.4.1 DISPLAY CORE UNIT Cover Removing and Installation ..............................5.3
5.4.2 Alpha Expansion Board Replacement .....................................................................5.3
5.4.3 ANTARES Assy Replacement...................................................................................5.4
5.4.4 Alpha Board Replacement .......................................................................................5.4
5.4.5 Line Filter Replacement ..........................................................................................5.5
5.4.6 P.S. Assy Replacement.............................................................................................5.5
5.4.7 Fans Assy Replacement ...........................................................................................5.6
5.5 CORRECTIVE MAINTENANCE PROCEDURES ON THE DISPLAY UNIT ............................. 5.12
5.6 CORRECTIVE MAINTENANCE PROCEDURES ON THE KEYBOARD UNIT ........................ 5.12
5.7 INTRODUCTION .................................................................................................................... 5.13
5.7.1 Parts List................................................................................................................5.13
5.7.2 Parts Location Illustration ....................................................................................5.13
5.7.3 Parts List Tables....................................................................................................5.14
5.8 SYSTEM LIFETIME................................................................................................................ 5.16
CHAPTER 6 Annex A ................................................................................................ 6.1
CHAPTER 7 Annex B ................................................................................................ 7.1
CHAPTER 8 Annex C ................................................................................................ 8.1
List of Tables
TABLE 1.4.1 -SUMMARY OF THE INPUT/OUTPUT REQUIREMENTS .......................................................... 1.6
TABLE 1.10.1 –VDR CONNECTION......................................................................................................... 1.12
TABLE 1.10.2 –MONITOR TIMINGS ......................................................................................................... 1.12
TABLE 5.1 –LIST OF CORRECTIVE MAINTENANCE PROCEDURES .......................................................... 5.2

Argus Radar - Installation and service manual
988-10187-004 4
SHIPPING AND UNPACKING
The unit parts are placed in cardboard boxes covered with a plastic sheet. Each
box includes a protecting polyurethane box shaped for the contained parts.
The following general rules apply:
- Inspection for damage during transport.
- When the unit(s) arrive at destination, inspection should be made
immediately to register any damage that may have occurred during
transport.
- The customer is normally responsible for insurance during transportation.
If any damage is found, both the insurance company and the shipping
agent must be informed immediately.
- Units must be transferred on board still packed into their boxes.
- When the units are removed from their boxes, they must be left in their
protective plastic cover until installation.
It is advisable to keep the packing material for possible future use. The plastic
sheet the unit is wrapped in, can be used to protect it during installation and
maintenance procedures.
In addition to the various main parts, the package should also include:
- Technical Manual with installation procedures.
- Installation kit (terminals, clamps, connectors etc.)
- Standard spare part kit (fuses, screws etc.)
The installation kit and spare part kit are necessary for the installation and
operation of the equipment, and must be kept together to perform the
installation work. Contents of the kits should be checked immediately after
unpacking, using the supplied material list in the box. The manufacturer will not
accept claims for missing items unless presented immediately after unpacking.
STORAGE
After the material contained in the boxes have been inspected in the presence
of the customer and have been verified that no damage has occurred, the unit
shall be stored in its original packing until the time of installation. The storage
premises must be dry and well protected.
If the units must be kept in storage for more than one month, it is advisable to
insert hygroscope substances, such as silicon gel salts, in the crates.
The Argus Radar System contains delicate electronic components, please
handle accordingly.

Argus Radar - Installation and service manual
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WARNINGS
HIGH VOLTAGE
Radar equipment includes high voltage that can cause injury or loss of life.
Danger exists only when the units are opened for service, exposing internal
circuits. The ARGUS Radar has been carefully designed to protect personnel
from possible injury from high voltages.
Nevertheless, it is recommended that the Main Power Line shall always be OFF
as an added protection when inspecting or servicing the equipment.
Although every effort has been made to eliminate danger to personnel, no
responsibility is accepted for any injury or loss of life suffered in connection with
this equipment.
X-RAY RADIATION
The Argus Radar does not generate X-RAY radiation.
RADIO-FREQUENCY RADIATION
Harmful effects (particularly to the eyes) may be caused by exposure of any
part of the human body to radio-frequency mean power densities in excess of
100 mW/cm2. This power density is exceeded at a distance of 1 ft. or less from
the 12 ft. X-Band aerial (when stationary).
The system is designed to disable radiation when the antenna is not rotating.
The pedestals have also been prepared for installation of an external safety
switch, which can be mounted on, or near the platform. This switch disconnects
the power from the Pedestal preventing accidental operation during servicing.
Whenever it is necessary to disconnect the waveguide system from a radar
transmitter for maintenance purpose, the transmitter output should, when
practical, be terminated in a matched load. If this is not possible, care should be
taken to avoid standing in front of an open-ended waveguide from which power
is being radiated.
NEVER look down a waveguide from which power is being radiated.
SAFETY SWITCH
The Radar Unit is provided with a safety switch, which disables the antenna
rotating during maintenance and service.

Argus Radar - Installation and service manual
988-10187-004 6
SAFETY PRECAUTIONS
Purpose
Safety precautions described in this paragraph are applicable to the Argus X-
Band Radar System. Depending upon the type of advice, the following attention
signs are used in the technical manual:
WARNING
IF THIS OPERATING PROCEDURE, MAINTENANCE
PROCEDURE, PRACTICE, CONDITION OR STATEMENT IS
NOT STRICTLY FOLLOWED, IT COULD RESULT IN SEVERE
INJURY OR DEATH OF PERSONNEL.
WARNING
IF THIS OPERATING PROCEDURE, MAINTENANCE
PROCEDURE, PRACTICE, CONDITION OR STATEMENT IS
NOT STRICTLY FOLLOWED, IT COULD RESULT IN
DAMAGE, OR DESTRUCTION OF UNIT, OR LOSS OF
TRANSMISSION EFFICIENCY.
NOTE
Advice of an essential operating procedure, maintenance
procedure, condition or statement, which must be followed.
Whenever a precaution, relating specifically to a part of the technical manual is
needed, precaution information is given in the relevant part of the manual.
Warning and Caution Signs precede applicable text.
Safety Operations
During normal operation (unit closed), the unit can be quickly disconnected
from the main power line, switching OFF the main circuit breaker located on the
electric switchboard.
During maintenance (unit opened) it is possible to turn on the unit, by setting
the SERVICE MODE to SW2 switch, mounted on the SRT control PCB (see
next page). This switch is connected in parallel with the relay, controlled by the
POWER ON command, and during normal operation must be set to NORMAL.
During maintenance, in order to prevent RTM occasional turning-on it is better
to disconnect and insulate, momentarily, PWON terminal from the relevant
terminal board.
NOTE
Main power line is always present on terminal board and on
fuses

Argus Radar - Installation and service manual
988-10187-004 7
SW2 switch (red rotary component)
SRT control PCB
Safety Summary
The following general safety precautions are not related to any specific
procedure and therefore do not appear elsewhere in this technical manual.
These are recommended precautions that personnel must understand and
apply during most phases of operation and maintenance.
KEEP AWAY FROM ANY LIVE CIRCUITS!
Operating personnel must at all times observe all safety regulations.
Do not replace components or make adjustments inside the unit with the high
voltage supply turned ON. Under certain conditions, dangerous potentials may
exist when the power breaker is in OFF position, due to charges retained by
capacitors. To avoid danger and casualties, always remove power and
discharge to ground a high voltage circuit before touching it.
DO NOT SERVICE OR ADJUST YOURSELF!
Under no circumstances should any person initiate servicing or adjusting the
unit except in the presence of authorized personnel.
RESUSCITATION
Personnel working with or near high voltage should be familiar with modern
methods of resuscitation. Such information may be obtained from the Bureau of
Medicine and Surgery or equivalent.

Argus Radar - Installation and service manual
988-10187-004 8
Warning Information
The following warning signs appear in this technical manual. To point out their
importance, they are repeated here for emphasis:
WARNING
USE EXTREME CARE WHEN WORKING ON THE UNIT
ONCE THE COVER HAS BEEN OPENED. THE MAGNETRON
ASSEMBLY OPERATES AT HIGH VOLTAGES THAT MAY
CAUSE FATAL INJURIES
WARNING
BE AWARE OF HIGH VOLTAGE CAPACITORS. IT IS
NECESSARY TO SHORT-CIRCUIT THEIR LEADS BEFORE
PERFORMING ANY MAINTENANCE ACTION ON THEM.
WARNING
ON THE ELECTRIC SWITCHBOARD, SET THE POWER
BREAKER DEDICATED TO THE PRESENT EQUIPMENT TO
“OFF”, AND ATTACH A SIGN, READING: “WORK IN
PROGRESS! DO NOT SWITCH ON!”
WARNING
USE EXTREME CARE WHEN WORKING ON THE
EQUIPMENT ONCE THE UNIT HAS BEEN OPENED. THE
MAGNETRON ASSEMBLY OPERATES AT HIGH VOLTAGES
THAT MAY CAUSE FATAL INJURIES.
WARNING
SET MAIN LINE BREAKER TO OFF BEFORE REPLACING
ANY FUSE. FUSES ARE AT VOLTAGE LEVELS, WHICH MAY
CAUSE FATAL INJURIES.

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.1
CHAPTER 1
INSTALLATION AND SETTINGS
1.1 Guidelines for the installation of
shipborne radar equipment
Information provided by radar is of vital importance for navigators and the safe
navigation of ships.
Special care should be taken to ensure correct installation of the radar, in order
to ensure the performance of the radar system.
Correct location of the radar antenna is an important factor the performance of
the radar system. Interference, either by reflecting constructions or other
transmitters, may heavily reduce the radar performance by creating blind
sectors, clutter on the radar display or generation of false echoes.
1.2 Interference
Proper care should be taken with regard to the location of radar antennas
relative to other antennas which may cause interference to either equipment.
The location of the antenna should comply with the following:
The radar antenna should be installed at a safe distance from interfering high-
power energy sources and other transmitting and receiving radio antennas.
The lower edge of the radar antenna should be a minimum of 50 cm above any
safety rail.
Radar antennas in close proximity should have a minimum vertical elevation
separation angle of 20° and a minimum vertical separation of 1 m where
possible.
1.2.1 Location relative to masts, funnels and
other constructions
Proper care should be taken with regard to the location of radar antennas
relative to masts, funnels and other constructions.
The location of the antenna should comply with the following:
The antenna should generally be mounted clear of any structure that may
cause signal reflections.
Ensure that any support or other obstacles are clear of the rotation of the
antenna (see specific antenna outline drawing for rotation radius).
Install antenna and turning unit so that the installation complies with the
compass safe distance for the equipment.

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.2
1.2.2 Blind sectors and range
To ensure full benefit from the radar, it is vitally important for the OOB that
horizontal and vertical blind sectors for the radar antennae are minimized. The
objective is to see the horizon freely through 360°, or as close to as possible.
For all radar systems and where practical, a line of sight from the radar antenna
to the bow of the ship should hit the surface of the sea at no more than 500 m
or twice the ship length, depending which value is smaller. This goes for all load
and trim conditions.
The radar antenna should be located in an elevated position to permit
maximum target visibility.
Ideal Radiation Plane
Blind sectors should be kept at a minimum, and should not occur in an area of
the horizon from right ahead to 22.5° abaft the beam to either side.
Note: Any two blind sectors separated by 3° or less should be treated as one
blind sector.
Individual blind sectors of more than 5°, or a total of blind sectors of more than
20°, should not occur in the remaining area, excluding the areain
the above subparagraph (e).
For radar installations with two radar systems, where possible, the antennas
should be placed in such a way as to minimize the blind sectors.

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.3
All installations should facilitate protection of equipment from damage, including
cabling.
Safe service access should be provided using service platforms where
necessary, having a minimum size of 1 m2 at a suitable height and with a
safety rail of suitable height.
Consideration should be given to the compass safety distance, as supplied by
the manufacturer, when positioning equipment units.
The design of the mounting platform for the antenna and antenna pedestal
should take into account the vibration requirements of resolution A.694(17) and
furthermore defined by IEC 60945. In addition to vibration, the design of the
mounting platform should consider shock and whiplash due to conditions at
sea.
1.2.3 Interaction with sea and false echoes
Considerations of interaction with the sea imply that the radar antenna should
be only as high as necessary to clear major objects, and as high to be
consistent with other requirements regarding acceptable horizon and target
detection range. The location of the antenna should minimize sea clutter
returns and the number of multi-path nulls.
1.2.4 Cables and grounding
Cables and grounding should comply with the following:
Cable screens, especially coaxial cable screens, should be installed according
to manufacturer's documentation.
The cables should be kept as short as possible to minimize interference and
attenuation of the signal.
All cables between antenna and radar system units should be routed as directly
as possible, consistent with consideration for other equipment, in order to
reduce electromagnetic interference effects. Cables should not be installed
close to high-power lines, such as radar or radio-transmitter lines.
Crossing of cables should be done at right angles (90°) to minimize magnetic
field coupling.
All outdoor installed connectors should be waterproof by design to protect
against water penetration into the cables.
Cables and microwave transmission lines should be handled carefully and be
without sharp bends.
Cables and microwave transmission lines should be installed with sufficient
physical separation, as defined in the manufacturer's documentation.

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.4
1.2.5 Radar controls and display
If the control panel is a separate unit, the functionality of the radar controls
should be available for the mariner at all workstations where a radar display is
available.
The orientation of the display unit should be such that the user is looking
ahead. The lookout view should not be obscured and the ambient light should
cause minimum degradation on the display screen in accordance with
MSC/Circ.982.
WARNING
ONLY ELECTRONIC POSITION FIXING SYSTEMS (EPFS) APPROVED
IN ACCORDANCE WITH THE REQUIREMENTS OF THE IMO IN
RESOLUTION MSC.112(73) SHALL BE CONNECTED TO THE ARGUS
RADAR CONSOLE.
WARNING
ACCORDING THE IMO STANDARD, A GROUND SPEED SENSOR IS
REQUIRED TO BE CONNECTED TO THE ARGUS CONSOLE.
IT IS ALLOWED TO USE AN ELECTRONIC POSITION FIXING SYSTEM
(EPFS) APPROVED IN ACCORDANCE WITH THE REQUIREMENTS OF
THE IMO IN RESOLUTION MSC.112(73) OR AN ALTERNATIVE TWO
DIMENSIONAL GROUND STABILISING SDME IN COMPLIANCE WITH
IMO RESOLUTION MSC.96(72)
WARNING
LONG TRANSMISSION LINES CAN AFFECT THE RADAR
PERFORMANCE. THE SYSTEM HAS BEEN TESTED WITH 20 M
LENGTH FROM TRANSCEIVER TO ANTENNA PEDESTAL, CONSIDER
THAT TRANSMITTED/RECEIVED POWER ARE HALVED FOR EVERY
10 MS ADDED (EX: +20 M = -6DB SIGNAL/NOISE).
CLEARLY THIS AFFECTS DETECTION FOR FAR TARGETS AND FOR
SMALL/LOW REFLECTIVITY ONES LIKE SAILBOATS.
HIGHEST MAST POSITION IS GOOD FOR LONG RANGE DETECTION
BUT IT AFFECTS HEAVILY THE DETECTION IN SEA CLUTTER. FOR
OPTIMAL DETECTION IN SEA CLUTTER SUGGESTED ANTENNA
HEIGHT FROM SEA LEVEL IS APPROX. 20 M.
USUALLY THE CONTRADICTORY SPECIFICATIONS ARE SOLVED
WITH INSTALLATION OF MORE THAN ONE ANTENNA, FOR EXAMPLE
ONE AT 30 M FOR LONG RANGE DETECTION AND ONE AT 20 M FOR
OPTIMAL DETECTION OF LOW INTENSITY ECHOES IN SEA
CLUTTER.

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.5
WARNING
THE RADAR UNIT IS PROVIDED WITH A SAFETY SWITCH, WHICH
DISABLES ANTENNA ROTATION DURING MAINTENANCE
OPERATIONS AND AVOIDS HIGH VOLTAGE DAMAGE. ALWAYS TURN
THE SAFETY SWITCH “OFF”, WHENEVER ADVISED IN THIS MANUAL
(FOR INSTANCE, BEFORE PERFORMING ANY MAINTENANCE OR
INSTALLATION PROCEDURE). IGNORING SAFETY SWITCH
OPERATION MAY PRODUCE HAZARD OF ELECTROCUTION AS WELL
AS OTHER SEVERE INJURES
1.3 System Specifications
1.3.1 Dimension and Weight
See outline drawings
1.3.2 Power
Power supply Single phase 220 or 115 Vac
+/- 15% 50/60 Hz
Power consumption (estimated)
Monitor M5027
68 W (+ 5 W power supply)
Monitor M5024
35 W (+ 5 W power supply)
Monitor M5019
30 W (+ 5 W power supply)
Monitor M5016
25 W (+ 5 W power supply)
Monitor 26” Hatteland 16:10
120 W
Monitor 24” Hatteland
110 W
Core + Keyboard
40 W
1.3.3 Environmental Data
Operating temperature -15°C / +55°C
Storage temperature -25°C / +70°C
Relative humidity Up to 95% at +40°
Water resistance, Salt spray, Vibrations etc. as per IEC 60945

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.6
1.4 Input/Output Requirements
The parameters with tolerances are included with each of the inputs listed.
Table 1.4.1 - Summary of the Input/Output Requirements
Feature Characteristics
Power (see also
section 1.3.2)
Voltage:
Consumption:
Single phase 110 to 230 Vac ±15%, 50/60
Hz
±
6% 50 VA
Environmental
Conditions
Operating:
Storage:
Temperature -15°C to +55 °C
Temperature -20°C to +60 °C
Gyrocompass Synchro:
. Voltage value: 50 ÷ 115 Vac ±10%
(reference)
. 50/60 Hz or 300/400 Hz
. Gear ratio: 1:360, 1:180, 1: 90, 1:36
Stepper:
. Voltage value: 15 to +100 V positive (Vef)
-15 to -100 V negative (Vef)
. Gear ratio: 1:360, 1:180, 1: 90, 1:36
Stepper rectified:
. Voltage value: 100 Vac (Vef)
. Frequency: 50/60 Hz or 300/400 Hz ±6%
. Gear ratio: 1:360, 1:180, 1: 90, 1:36
Serial:
. RS422 standard FNMEA or RS232
. Load: ≥7 KΩ, terminated 120 Ω
Speed Log Mechanical input:
. PRR: 100 pulses/NM, 200 pulses/NM, 400
pulses/NM
. Input type: diode isolated, pull-up
. pulse width: 1 ms (min)
. Load: ≥ 2.7 KΩ
. Threshold: +10 V (typ)
Speed For Electronic input
(switch):
. PRR: 120 pulses/m, 20000 pulses/NM
. Load: ≥ 1 KΩ
. Pulse width: 0.1 µs (min)
. Voltage: TTL to 15V (typ)
Speed Serial Electronic input
(serial):
. Input type: RS422 standard NMEA or
RS232
. Load: ≥3 KΩ, terminated 120 Ω
System Failure
(FAIL)
TB1 (pin 5-6)
Relay output NC
Closed when the system is in failure or
switched off
- Max 125 V 30 W load
AIS
. RS422 standard FNMEA or RS232
Load: ≥7 KΩ, terminated 120 Ω
EPFS
. Input type: RS422 standard NMEA or
RS232
Load: ≥3 KΩ, terminated 120 Ω
BAM
-
Input type: RS422 standard NMEA or
RS232
Load: ≥3 KΩ, terminated 120 Ω
Danger Target
(DGT)
TB1 (pin 3-4)
Relay output NC/NO
configurable
Active when a Radar Target or AIS is
dangerous
- - Max 125 V 30 W load

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.7
Feature Characteristics
Dead Man Alarm
Reset (DNA)
TB1 (pin 1-2)
Relay output NC/NO
configurable
Active when an action is made on the
control panel
- Max 125 V 30 W load
Video and Combined data without
ALPHA Expansion or CH3 and CH4
with this card
. Voltage value: 0,8 to 1,5 Vpp
adjustable
. Load: ≥ 1 KΩ, terminated 75 Ω
Video and data with Alpha Expansion CH1 and CH2: (Optional)
Video:
Polarity:
. Positive or negative
Amplitude: . 1 to 4 Vpp adjustable
Load:
. Load: ≥1 KΩ, terminated 75 Ω
Bandwidth:
. 24 MHz (-3 dB)
Trigger:
Polarity:
. Positive or negative
Amplitude:
. TTL to 40 V (peak)
Load:
. Load: ≥ 1 KΩ, terminated 75 Ω
PRF:
. 300 to 4000 Hz
Pulse width:
. 50 ns (min.)
Serial Interface: Signal Standard: . RS232 or RS422
. Load: ≥3 KΩ, terminated 120 Ω
Antenna Rotation Rotation rate: . 15 to 60 RPM
Data
Device type:
- Bearing
. Voltage value: 4 to 50 V
. 128 or 132 pulses per antenna revolution
. Load: ≥ 2 KΩ
- Encoder
. Voltage value: 4 to 50 V
. 1024 or 4096 pulses per antenna
revolution
. Load: ≥ 2 KΩ
Heading line Voltage value: . 4 to 50 V
Load: . Load: ≥ 2 KΩ
Pulse width:
. ≥ 0,1 mS and < 45°
Polarity:
. Positive or negative or bipolar
1.5 Analogue Gyro compass (Synchro or
Stepper)
The gyro signals are connected to TB14 on the Alpha PCB. There are several
connection possibilities depending on type and reference voltage of the gyro.
Refer to the drawing below for the relevant configuration for Synchro and
Stepper.

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.8
Fig 1 For Argus (ALPHA PCB) connect to TB14.
Note: Connection with stepper gyro full wave rectified signal (SPERRY MK-37,
MK-20)
1. Close the jumpers P10, P13, P15 on the Alpha PCB;
2. make the interconnection to TB4 on the Alpha PCB as follow:
TB14
WIRE
NUMBERS
FROM
GYRO
3. Follow the configuration instructions described in Chapter 3
4. Check the phases status through the LED on the Alpha PCB.
The three phases are given by the gyro with a 3 bit Gray code. The purpose of
this code is to detect the increment of the value and its sign; its most important
characteristic is that only one of the three bits at the time can change and in
this application (normally is not a characteristic of the Gray code), the 3 bits
cannot have all the same level. To give a quick look to the Gray code see the
four green LED on the Alpha:
1. The first one next to red LED is D33 and it indicates the first phase (S1).
S0
S1
S2
S3
R1H
R1L
R2
#5
#1
#2
#3
#4

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.9
2. The second one is D34 and it is the second phase indicator (S2).
3. The third one is D35 and it indicates the third phase (S3).
4. The last one is D36 and it is to indicate the Reference.
Now that the LEDs are individuated, move the gyro or in any way simulate a
steering and the three LEDs (S1, S2 and S3) will start to change their state and
it will be easy to observe that they will never be “all on” or “all off”; their state will
change one at a time.
WARNING
THE GYRO INTERFACE SHOULD BE CONFIGURED CORRECTLY
ACCORDING TO TYPE OF SENSOR CONNECTED, OTHERWISE
LEVELS AND LED SIGNALS WILL BE INCORRECTLY LIGHTED, ALSO
WHEN THE SIGNALS ARE AVAILABLE.
S1
S3
S2
Gyro Phases combinations in Gray code

Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.10
1.6 Serial Gyro
A Standard or Fast NMEA Gyro can be connected to the Alpha PCB TB9
Connect it according to guidelines defined in Chapter 2 Serial Interfaces.
1.7 Speed LOG
Speed log with analogue signal is connected to TB14 on the Alpha PCB. There
are several connections depending on the type of log installed. Most single axis
analogue speed logs are shorting-type (relay contact closure), in this case the
signal shall be connected between PIT and GND on TB14.
Speed log with NMEA output can be connected to Alpha PCB input TB2. See
the serial interface chapter for accepted sentences.
WARNING
THE HEADING SENSOR, A GYRO EQUIPMENT OR EQUIVALENT, SHOULD
BE ABLE TO SUSTAIN A RATE OF TURN UP TO 20°/S ACCORDING TO
IMO RESOLUTION MSC.192(79) AND MSC.116(73) FOR THD DEVICES.
IF THE INTERFACE IS ANALOGUE THE MINIMUM TURN RATE SHOULD
BE 12°/S.
FOR A DIGITAL INTERFACE THE HEADING REFRESH SHOULD BE MORE
THAN 20 HZ, UP TO 50 HZ.
IF THE GYRO UPDATE RATE IS UNDER THE PREVIOUS STATED VALUES
THE TRACKING PERFORMANCE CAN BE SERIOUSLY DEGRADED WITH
INCREASING ERRORS ON TARGET VECTOR DURING THE OWN SHIP
CHANGE OF COURSE.