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.
Autohelm’ RADAR Operation and Installation
ST50 PLUS RADAR Operation and Installation Handbook Autohelm and SeaTalk are registered Trade Marks of Autohelm Limited Autoheims poiicy of continuous improvement and updating may change product specifications without prior notice Copyright Autohelm 1994
ST50 PLUS RADAR Operation and Installation Handbook Warning This radar equipment must be installed and operated in accordance with the instructions contained in this manual. Failure to do so can result in personal injury and/or navigational inaccuracies. In particular: 1. HIGH VOLTAGE. The radar display unit contains high voltage. Adjustments require specialized service procedures and tools only available to qualified service technicians, and there are no user serviceable parts or adjustments.
ST50 PLUS RADAR Operation and Installation Handbook Package Contents 1. Display Unit 2. Scanner Unit 3. Inter unit Cable (15m) 4. Power Cable 5. SeaTalk Cable 6. Fixing Studs (4 chl) 7. Thumb nuts (4 off) 8. Gasket 9. Template 10. Installation and Operation Handbook 11. Worldwide Service Center book 12.
Contents Contents Section 1. Introduction ................................................... 1.1 General ................................................................. l-l l-l 1.2 Equipment Features ................................................ 1-2 1.2.1 ST50 Display Unit ........................................... 1-3 1.2.2 Radome Antenna Unit Main Features ................. l-4 1.3 About This Manual .................................................. 1-5 1.4 Specifications .................
6 ST50 PLUS RADAR Operation and lnstalfation Handbook Section 3. Operation ..................................................... 3-1 3.1 Introduction ........................................................... 3-1 3.2 Radar Map ............................................................. 3-2 3.2.1 Map Operation ............................................... .3-2 3.2.2 Effect of Ship’s Movement .............................. .3-3 3.2.3 Navigational Echoes .......................................
Section 1. Introduction Section 1. Introduction 1.1 General Congratulations on selecting the Autohelm ST50 LCD Radar for your radar navigation needs. Whether you purchased this radar because of its compactness, power economy, ease of installation, or long term reliability, one thing is certain; the moment you turn on your ST50 Display you will know you are seeing a revolutionary new concept in radar technology at work.
ST50 PLUS RADAR Operation and lnstaNation Handbook Section 1. Introduction chart information, making navigation both informative and exciting. The unique Split Screen Mode allows simultaneous viewing of radar and Seatalk’ Data. 8. Interfaces with Autohelm Seatalk instruments, and NAVAIDS, including Autohelm’s Smart Heading Sensor magnetic compass.
Section 1. Introduction ST50 PLUS RADAR Operation and Installation Handbook The compact design of the display unit is made possible by the use of custom LSI (Large Scale Integrated circuit) components. An LSI type of “chip” contains, in one package, the equivalent of up to 30 integrated circuits. Thus compact size, power efficiency, and full radar navigation features at an economical price are all “standard” in the ST50 radar system. 1.
ST50 PLUS RADAR Operation and fnstallation 1 - 6 Handbook Section 1. Introduction 1.42 Display Unit 1.4 Specifications 1) 1.4.1 General 1) Maximum range: 2) Minimum range: 3) Range Scales: 4) 5) 16 nautical miles Less than 35 m (25 yds) on the .125 nm range. Range Number of Range ring interval rings 0.125 nm 2 0.0625 nm 0.125 nm 0.25 nm 2 0.25 nm 0.5 nm 2 0.75 nm 3 0.25 nm 1.0 nm 4 0.25 nm 1.5 nm 6 0.25 nm 0.5 nm 3 nm 6 6 nm 6 1 nm 12 nm 6 2 nm 4 nm 16 nm 4 Range discrimination: Less than 35 yds.
l - 8 ST50 PLUS RADAR Operation and Installation Handbook Cursor, VRM, EBL, Interference Rejection, Target Expansion, Target Alarms, LAT/ LONG or TD Readouts, Waypoint t/L, Off Center/Zoom, Timed Transmit, Target trails, Built in Simulator, Hold Mode, Auto Gain, Auto STC, Auto FTC, Auto Tune Other Optional Features: Raychart, Seatalk 18) Features 19) Control Keys (All push bottons) inputs: Loran-C/GPS RANGE KEYS UP/DOWN UP/DOWN ,TUNE KEYS UP/DOWN RAIN KEYS UP/DOWN SEA KEYS GAIN KEYS UP/DOWN OFF/ON HOL
Section 2. Instal/ation Section 2. Installation 2.1 General Congratulations on selecting the Autohelm ST50 LCD radar to meet all of your radar navigation requirements. Although your ST50 radar is designed to the highest levels of quality and performance, it can only attain those standards when a proper installation of the equipment has been achieved. This section provides practical guidelines to assist in the planning and installation of the ST50 aboard your vessel. 2.
ST50 PLUS RADAR Operation and Installation Handbook 2-3 Section 2. Installation 2.3 Planning the Installation The layout for installing the ST50 radar should be planned to give the best operation and service aboard your particular vessel. In general, the Radome Unit should be mounted as high as possible above the waterline. The Display Unit should be installed in a convenient viewing position near the helm. Keep in mind the optimum viewing angle when installing the display.
ST50 PLUS RADAR Operation and Installation Handbook Section 2. Installation 2-5 5) The selected location should be far enough away from devices that may cause interference, such as motors and generators. 6) Generally speaking, the display should be located in a protected area away from prolonged direct exposure to rain and salt spray. It is good practice to protect your valuable electronic equipment as much as possible.
ST50 PLUS RADAR Operation and Installation Handbook 2-6 Section 2. lnstaflation 2.3.1.1 Console Mounting Instructions The procedure below can be used to console mount the ST50 Display. Refer to the console mounting figure to see how the various hardware items are arranged during assembly. ~ I / 2-7 2. Unpack the template mounting kit and also confirm that all hardware is present. 3.
2-8 ST50 PLUS RADAR Operation and Installation Handbook Section 2. Installation Warning It is recommended that the radar antenna be mounted above objects which could interfere with the radar signal such as the flying bridge, large engine stacks, and personnel. This may be difficult on some vessels and in such a case it is recommended that a radar mounting pedestal be used. Always turn off the radar system before servicing the antenna or nearby equipment.
, Section 2. Installation ST50 PLUS RADAR Operation and Installation Handbook Using the outline drawing of the Scanner base or template in the back of the manual as a guide, prepare the mounting surface with the four mounting holes as required. Install the Scanner and secure it to the mounting surface. The correct mounting hardware is stainless steel hexhead bolts 5/16’, 1 l/4’ long with 18 UNC thread. A flat and lock washers should be used.
2- 12 I ST50 PLUS RADAR Operation and installation I Handbook ) Section 2. installation The cable entrance is provided at the rear of the radome unit. If the unit is mounted on a hollow mast, the cable may be run inside the mast and then fed through the radar’s cable entrance. Step 1. Loosen the 4 clamping bolls securing the radome and remove the radome cover. -The clamping bolts are captive and should remain in the lower flange assembly.
ST50 PLUS RADAR Operation and Installation Handbook _-------------------_ ,______--_--________------ ------I I , ANTENNA UNIT 1 I # I T ELK DISPLAY UNIT ; I 8 I I t HV -SV 01 COAX. 8 1 4 03 V D w I I VD I I I E @ 2 VD-R I 8 E I I a 4 II 1 1 II , I DC-RI E Section 2. Installation 2 - 2.4 Electrical Connections 2.4.1 DC Power Connection The ST50 is intended for use on DC ships power systems and can operate as long as that DC supply system is maintained from 10.2 to 16 Vdc.
2- 16 ST50 PLUS RADAR Operation and installation Handbook Should the power connections be accidently reversed, protective inline fuse F401(3.15A) will blow. Make sure that the input power leads are connected for correct polarity with a VOM. Replace the fuse. Grounding the Radar System It is important for proper operation that an effective RF ground be connected to the radar system.
. ! - 18 I If for some reason, NMEA 0183 data is not available from any Navaids on the vessel, the radar can accept and operate in full function with the Seatalk format. 2.4.2.2 Installing the XX Heading Sensor 2-19 Section 2. Installation ST50 PLUS RADAR Operation and Installation Handbook I I The sensor should be placed in a location on the vessel where magnetic interference is minimal and where it will remain undisturbed.
ST50 PLUS RADAR Operation and Installation Handbook Section 2. Installation 4. Drill a 9/64’ hole in the center of each of the three slotsin the base of the sensor. These slots will allow you to turn the sensor slightly to align it with the center line of the vessel during compensation. Notes: The sensor is designed to output the NMEA 0183 “HDM” sentence for the radar. The sensor can supply data for up to two (2) external inputs which conform to the NMEA interface requirements. 5.
ST50 PLUS RADAR Operation and installation Handbook When connecting power to the sensor OBSERVE PROPER POLARITY! The RED wire should be connected to the POSITIVE (+I source fterminal; the BLACK wire should be connected to the NEGATIVE ) source terminal. If the power leads are reversed the sensor will not operate. 2-23 Section 2. Installation 2.4.2.
2 - 24 ST50 PLUS RADAR Operation and Installation Handbook In order to access the full charting and alternate screen operations of the ST50 radar, a simple connection between your Raychart 600Xx and the display must be made. If your unit does not have the Raychart option already installed, then you will need the Raychart option kit MDYW10417. When the Raychart unit is first turned on, the radar will detect the incoming signals and will switch instantly to the Raychart screen.
ST50 PLUS RADAR Operation and Installation Handbook 3-2 Section 3. Operation 3.2.2 Effect of Ship’s Movement 3.2 Radar Map The radar display is a map-like representalion of the area in which the radar is operating. Typically, the ship’s position is at the center of the display or sometime may be repositioned or offset up to 66% of the radius anywhere on the screen in the OFFSET MODE.
ST50 PLUS RADAR Operation and Installation Handbook Buoys and small boats are an example of targets that are sometimes difficult to differentiate between. Since they bob and toss about in the waves, they do not present a consistent reflecting surface. Consequently, their echoes have a tendency to fade and brighten and at times to disappear momentarily. Very often buoys and small boats resemble each other, but usually the motion of one target to the other identifies the boat from the buoy.
3-6 ST50 PLUS RADAR Operation and Installation Handbook Section 3. Operation 3.2.8 Radar Interference 3.2.7 Side Lobes A very small part of the RF energy from each transmitted pulse is radiated outside the single narrow beam, producing side lobe patterns. Side lobes have no effect on distant or small surface objects, but the echo from a large object at short range may produce an arc on the radar screen similar to a range ring, or appear as a series of echoes forming a broken arc.
3 - 8 ST50 PLUS RADAR Operation and Installation Handbook Indirect echoes may appear when there is a large target, such as a passing ship at a short range, or a reflecting surface, such as a funnel on your own ship in line with the antenna. The signal, on first striking the smooth side of the large target, will be reflected, and these subsequent echo returns to the antenna are shown on the display.
ST50 PLUS RADAR Operation and Installation Handbook A 5 meter cliff has a radar horizon of 5 nm. Therefore, under standard conditions, the cliff should begin to appear on the screen when the ship comes within 5.0 + 5.0 = 10 nm. Section 3. Operation By pressing and holding down the STBY/XMIT key indication approximately 2 seconds, the radar will be turned OFF and all alphanumeric information on-screen will extinguish. @-I RANGE KEY 3.
ST50 PLUS RADAR Operation and Installation Handbook Note: Pressing the [G-l key at the same time while turning the radar to standby will perform a Soft Master Reset to the unit in the event that a “lock up” condition should occur. A Soft Master Reset will NOT reset the radar’s initial settings (i.e. bearing, STC, tune, timing . ..). In order to perform the Soft Master Reset, shut the Radar System OFF. Hold down the -1 key; then-press the[m! key to place the unit in ST-BY. Release the F] key.
Section 3. Operation ST50 PLUS RADAR Operation and Installation Handbook @ SEA CLUTTER CONTROL The sea clutter control, also known as the Sensitivity Time Control (STC), is used on the short ranges to suppress the effects of sea clutter close to own ship by reducing the nearby gain. To set sea clutter,press the[Ejkeytoreduceclutter.Pressthe mto increase sea clutter.
ST50 PLUS RADAR Operation and Installation Handbook 3-16 You can move the CURSOR to the start point by using arrow keys and then start it by pressing [-Ikey. Next you can set the END point by using arrow keys and pressing mlkey. A s y o u do this, the Guard zone area will be drawn. After setting the Start point and the END point, the Alarm function will operate. If the -[key is pressed again while the Alarm function is operating, the Alarm function will be turned off.
3- 18 ST50 PLUS RADAR Operation and Installation Handbook Section 3. Operation @ CURSOR CONTROLS The Cursor feature combines the EBL and VRM functions and can be used to quickly determine the range and bearings from your own ship to any point on the radar screen. The cursor appears on the display as a large (+I character. To turn ON the Cursor mode, just press the -1 key. A blocked word “CURSOR” appears at the bottom left side to let you know that you are in the “Cursor” mode.
Section 3. Operation ST50 PLUS RADAR Operation and Installation Handbook q 0 CONT/DIM KEY q q q You can select each item with , keys and change with , keys. After setting you can return by pressing[m]key again. The selected position changes reverse character and the set characters are underlined. Default settings are underlined. This CONT/DIM key is used to adjust the contrast of LCD or the backlight brilliance of LCD and key pad. The ICONT/DIMlkey turns the contrast and dimmer control mode “ON”.
ST50 PLUS RADAR Operation and Installation Handbook (5) GAIN The GAIN control can be selected between “AUTO” or “MANUAL” mode. This item selects the receiver gain sensitivity method for the Radar. If Manual is selected the GAIN Control on the front panel is used and the GAIN Bar indicator reacts to front panel changes. The AUTO gain mode will automatically adjust the radar for optimum sensitivity whenever the radar is turned on or ranges changed.
3 - 24 ST50 PLUS RADAR Operation and Installation Handbook ,101 DISPLAY (RADAR/SEATALK) (11 ) SET UP PAGE DISPLAY mode can be selected from RADAR rnode or SEATALK mode. TheSEATALK mode is available when ST50 is connected to SEATALK bus system. The bottom portion of the display will then shift from radar information the Seatalk information. There are 4 Seatalk pages then available to you. Each quick press of the [ml key will cycle through then (Livedata-+ Waypoint-+Tide+Wind-+Livedata .-I.
3 - 26 ST50 PLUS RADAR Operation and Installation Handbook fb) POSITION (d) OPER. PROMPTS The POSITION display can be selected from present position L/ L (Latitude/Longitude), TD (Time Differencel,WPT(way point Lat/ Long) or OFF. L/L or TO data can only be displayed if you are connected properly to a Loran C or GPS Receiver with proper data output, or to Seatalk. This information appears at the lower left corner of the display.
Section 3.
