Furuno CI-35 manual

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Your Local Agent/Dealer Your Local Agent/Dealer 9-52 Ashihara-cho, 9-52 Ashihara-cho, Nishinomi y a, Ja p an Nishinomi y a, Ja p an Tele p hone : Tele p hone : 0798-65-2111 0798-65-2111 Telefax : Telefax : 0798-65-4200 0798-65-4200 FIRST EDITION : FIRST EDITION : FEB. FEB. 1997 1997 Printed in Japan Printed in Japan A ll ri g hts reserved. A ll ri [...]

i i i i i i i i i i i i i i " DANGER ", " W ARNING " and " CAUTION " notices appear throughout this manual. It is the responsibility of the operator of the equipment to read, understand and follow these no- tices. If you have any questions regarding these safety instructions, please contact a FURUNO agent or dealer . S[...]

ii Do not disassemble or modify the equipment. Fire, electrical shock or serious injury can result. Immediately turn off the power at the ship’s mains switchboard if water or foreign object falls into the equipment or the equipment is emitting smoke or fire. Continued use of the equipment can cause fire, electrical shock or serious injury. Do not[...]

iii CONTENTS SAFETY INSTRUCTIONS ________________________________ i to ii T ABLES FOR RECORDING USER PRESETS _______________ v to x CHAPTER 1. GENERAL _______________________________ 1-1 to 1-8 1. FEA TURES ..................................................................................... 1-1 2. PRINCIPLE OF MEASUREMENT .........................[...]

iv TIDE VECTOR/COURSE PLOT SECTION ..................................... 3-10 to 3-15 TIDE VECTOR Display ...................................................................... 3-10 TIDE HISTOR Y Display ...................................................................... 3-1 1 COURSE PLOT Display .................................................[...]

v T ABLES FOR RECORDING USER PRESETS The CI-30/35H provides menus to preset, various measuring and display conditions to customize the equipment precisely for your operating conditions. The form below is provided to record user presets, so they can be restored in the event of loss by misoperation or by maintenance/service work. 1) BASIC MENU (Displ[...]

vi ITEM USER PRESET : selected TIME DATA WT SPEED NAV FORMAT NAV AID NAV DATA TIME INT CRS CAL MODE CRS CAL EXEC TIDE OUT INT * INT T/D CIF EXT NAV-TIDE NMEA GPS LORAN-C FAC. SETTING INT T/D CIF ALL SPD 1 min MAN - - 15 sec * * * * * * * DECCA DR LORAN-A ALL L/L [ ] min GT START SPD 1 to 10 min (in 1 min steps) NAV To start calibration, select STAR[...]

vii [READ THIS FIRST!!] IMPORT ANT NOTICE ON TIDE MEASUREMENTS (In nav-aided mode, tide accuracy depends heavily on gyro accuracy .) SETTING SHIP’S HEADING The CI-35/35H has the nav-aided mode to measure absolute tides even in deep waters where ground tracking is unattainable. T o achieve reliable measurements, however , you must supply accurate [...]

viii CALIBRA TING COURSE OFFSET (Automatic) A. When ground-tracking is attainable: 1. Make sure the navaid (GPS) is working correctly and accurately . 2. On CI-35/35H, select ground tracking mode. (Press the TRACKING MODE key to see the “GT” mode indication on the display .) 3. In Menu 4, set ‘CRS CAL MODE’ to “GT”. 4. Run your boat at [...]

ix WHY IS GYRO DA T A IMPORT ANT IN NA V -AIDED MODE? If you consider the difference of tide vector calculations is ground-tracking mode and in nav-aided mode, you will realize how important the gyro (heading) information is. T ide Calculation in Ground-T racking Mode In ground-tracking mode, the CI-35/35H derives tide information from the followin[...]

x T ide Calculation in Nav-Aided Mode In nav-aided mode, the CI-35/35H derives tide information from the following data. (1) Ship’ s speed/course sensed by the external navigator (GPS) (nav speed = pseudo ground speed) (2) Ship’ s speed/course based on target layer (water speed) (3) Bearing of ship’ s bow (Heading by gyro) Here, nav speed (1)[...]

1-1 CHAPTER 1. GENERAL 1. FEA TURES ¡ The functions of CI-35 and CI-35H are same. CI-35H is type approved by MOT (Ministory of T ransportation). ¡ Even in deep waters where ground (bottom) reference is not available acoustically , the CI-35/ 35H can provide absolute movements of measuring layers by receiving position (or speed) data from GPS navi[...]

1-2 2. PRINCIPLE OF MEASUREMENT When a moving vessel emits an acoustical pulse into the water at an angle, a portion of emitted energy is reflected from the seabed and other microscopic objects in the sound path, such as plank- ton or air bubbles. The frequency of the received signal is shifted from the transmitted frequency in proportion to relati[...]

1-3 Tide T ide is movement of watermass at a particular depth. T o know absolute tide (speed on ground), the following two data are required: 1 Ship’ s speed and course based on ground 2 Ship’ s speed and course based on measuring layer (A) Absolute tide is, then, given as a dif ference of these two speed vectors. Absolute T ide = 1 - 2 Fixed L[...]

1-4 Tide Differential T ide dif ferential is a relative movement of tides at different depths, layer (A) and layer (B). T o calculate tide dif ferential, the following two data are used: 1 Ship’ s speed and course based on layer (A) 2 Ship’ s speed and course based on layer (B) T ide dif ferential between two layers is, then, given as a differe[...]

1-5 3. TIDE, NA V -TIDE & TIDE DIFFERENTIAL Tide (Absolute tide) Absolute tide can be measured in the ground tracking mode. :Base of measurement w q Layer A Fixed Start of trip End of trip (Moving at 10 kt on ground) (Moving at 3 kt on ground) 10 NM (1 hour trip) Assume that the ship and layer A are moving in the same direction, and ship’ s s[...]

1-6 Tide Differential T ide dif ferential is a relative movement of tides at different depths. It can be measured in the ground tracking, water tracking and nav-aided modes. :Base of measurement w e Layer A Start of trip End of trip (Moving) 10 NM (1 hour trip) Layer B (Moving) 2 kt 5 kt Assuming that the ship, layer A and layer B are moving in the[...]

1-7 Cd = C1 - C2 = (Vg - Vwa) - (Vg - Vwb) = Vwb - Vwa = 5 - 8 = -3 (kt) In the water tracking mode, watermass just below the transducer (near -surface layer) is taken as the base of all measurements (virtual ground). Therefore, the ship and tide speeds in the water tracking mode are not absolute but relative to this near -surface layer . Vw = 9 kt[...]

1-8 T ide differential calculations in water tracking mode T ide speeds of layer A (C1) and layer B (C2) relative to near-surface layer (Vw) are calculated as follows: D1 = Vw - Vwa (Speed of layer A based on near -surface layer) D2 = Vw - Vwb (Speed of layer B based on near-surface layer) The tide dif ferential (Dd) between layers A and layer B is[...]

2-1 CHAPTER 2. OPERA TION 1. CONTROL P ANEL LA YOUT 0 28 6 4 10 0 28 6 4 10 0 28 6 4 10 PWR DRIFT TRIP ALARM HISTORY OFF TIDE EFFECT TIDE DIF TRACK MODE MANUAL TRACK LYR 1 RANGE LYR 2 MENU LYR 3 COURSE PLOT EVENT HU NU LAYER MENU BRILLIANCE DIMMER CONTRAST VOLUME 0 28 6 4 10 3 5 8 9 !2 !7 2 !3 1 4 6 7 !0 !1 !4 !5 !6 !8 DEGAUSS button Press this but[...]

2-2 2. FUNCTION OF KEYS AND CONTROLS KEY FUNCTION/OPERATION REMARKS 1 2 8 9 !0 !1 3 4 5 6 7 POWER ON : POWER OFF: + Plots event mark “+” at ship’s present position. Event mark moves relatively as ship runs. 16 event marks maximum Sampling time interval of tide history can be selected at MENU 1. North-up modes requires external heading data. T[...]

2-3 KEY FUNCTION/OPERATION REMARKS !2 !3 !4 !5 !6 !7 !8 Enables manual bottom acquisition in ground tracking mode. PREPARATION 1. In MENU 2, set “REF DEPTH” to “OFF.” 2. Select ground tracking mode. MANUAL BOTTOM ACQUISITION 3. Press and hold key until LED lamp on the left of the key lights. (Mode display should change from “GT” to “M[...]

2-4 3. OPERA TING PROCEDURE SUBJECT/PURPOSE OPERATON (ACTION) 1 2 3 4 5 Power-on ¡ Press key. 13 Power-off ¡ While pressing and holding down key, press key. Display brilliance adjustment ¡ Turn BRILLIANCE control. (CW : Bright, CCW : Dark) Setting measuring depth Selecting tracking mode Reacquiring of temporarily lost ground echo (Manual bottom [...]

3-1 CHAPTER 3. DISPLA Y 1. DISPLA Y SAMPLES Sample 1 Ground Tracking Mode (Ground echo available: GRN) Tide Differential Display (Based on layer 1) Tide Vector Display (North-up mode) Ship’s speed vector: GRN Layer 1 tide vector: YEL Layer 2 tide vector: PPL Layer 1 tide vector: L-BLU Tide dif. vector (1 2): YEL/PPL Tide dif. vector (1 3): YEL/L-[...]

3-2 2. HOW T O READ THE DISPLA Y The display screen of the CI-35/35H is roughly divided into five sections as shown below . What is displayed in each section and how to use it is described on the following pages. FUNDAMENTAL DATA display section (Text) DRIFT & TIDE DIFFERENTIAL display section (Text & Graphic) ECHO LEVEL display section (Gr[...]

3-3 FUNDAMENT AL DA T A SECTION SHIP’S SPEED/COURSE Display Note: The CI-35/35H updates ship’ s speed and course display in every 3 seconds with an averag- ing time selected in MENU 1. (See page 3-5 for averaging time setting.) The course display appears in degrees and 32-point notation. If desired their locations can be swapped by changing the[...]

3-4 FUNDAMENT AL DA T A SECTION TRACKING MODE Display Ground T racking Mode : Shows absolute ship and tide movements based on ground. (Bottom echo required.) W ater T racking Mode : Shows movements of ship and tide relative to near-surface water . Nav-aided Mode : Shows ship’ s movement measured by the external navigation equip- ment, and the tid[...]

3-5 FUNDAMENT AL DA T A SECTION ERROR Status display When a source data for calculation and display seems to be abnormal, the following error indica- tion appears on the display . This is to alert the operator not to rely on the related data. 1 If data is not received from the T ransceiver Unit, a red square mark appears above “kt” in the SPEED[...]

3-6 LYR 3 LYR 2 LYR 1 Select layer by key, and turn knob to see desired depth. Depth value of the selected layer appears is green. Press the same key again when desired depth is set. The depth value will return to white. Layer 1 (Yellow) Layer 2 (Purple) Layer 3 (Lightblue) Tide speed in knots. Tide direction in degree and in 32-point notation. Loc[...]

3-7 FUNDAMENT AL DA T A SECTION Ground Tracking Mode Water Tracking Mode Ship’s movement based on ground Direction N Layer 1 Measuring depth Tide movement of layer 1 Speed Layer 2 Layer 3 Seabed Tide movement of layer 2 Tide movement of layer 3 Layer 1 Tide movement of layer 1 relative to surface water. Layer 2 Layer 3 Tide movement of layer 2 re[...]

3-8 FUNDAMENT AL DA T A SECTION PRESENT TIME Display ` Refer to page 4-4 to set date/time of the internal clock. (MENU 2 - “DA TE/TIME”) ` It is possible to display time data received from the external navigation equipment, instead of the internal clock. However , the time display may not increment every one second since the time update depends[...]

3-9 DRIFT/TIDE DIF SECTION SET & DRIFT Display Press the DRIFT key to call the set and drift display . TIDE DIFFERENTIAL Display Press the TIDE DIF key to call the tide dif ferential display . 20 0 10 10 20 10¡ 0.4 kt MODE COMPASS GT 270.0 17 : 41 : 00 TRIP 0.00 NM NE 12 1 Set angle (Leeway angle) (20¡ port to 20¡ starboard) Deviation of tru[...]

3-10 TIDE VECTOR/COURSE PLOT SECTION TIDE VECT OR Display ` Each tide vector can be switched on and of f independently by MENU 1 - “LA YER n” setting. (Refer to page 4-2.) ` T ide dif ferential vectors can be switched on and of f by MENU 1 - “TIDE DIF DISP” setting. (Refer to page 4-2.) ` Each vector bar indicates “flowing to” own ship [...]

3-11 TIDE VECTOR/COURSE PLOT SECTION TIDE HIST OR Y Display The CI-35/35H can hold last 24 tide samples collected at a time interval of 15 sec, 1 min, 5 min, 10 min, 30 min or 1 hour . The tide history presents variation of these tide information with a string of round marks. That is, distance from the graphic center to a mark represents tide speed[...]

3-12 TIDE VECTOR/COURSE PLOT SECTION COURSE PLOT Display The course plot display provides ship’ s track of last 20 minutes (200 points, one point sampled every 6 seconds). Event positions, stored by the EVENT key , are also plotted with “+” marks. ` Press the COURCE PLOT key to call course plot display , and press the same key again to restor[...]

3-13 TIDE VECTOR/COURSE PLOT SECTION TIDE EFFECT Display The tide ef fect display is useful for estimating three-dimensional deformation of cast net by the ef fect of tides at dif ferent depths. Notice that display merely shows movements of layers; it does not show true net shape in the water . Assume that you put drifting marks (virtual buoys) on [...]

3-14 TIDE VECTOR/COURSE PLOT SECTION Example of tide effect plotting Display (Head-up) Casting the first virtual buoys at point “a”, vessel made 1/4 of a circle and reached point “b”. Assume that each buoy moves on each layer keep- ing the same speed and di- rection as at time of measurement. As time passes, the first buoys should move as l[...]

3-15 TIDE VECTOR/COURSE PLOT SECTION DRIFT Display Switched on and off in MENU 1 HEAD-UP/NORTH-UP Presentation The HU NU key switches between “HEAD-UP” mode and “NOR TH-UP” mode. RANGE CURSOR (V ariable Range Marker) ` The knob adjusts the radius of the range cursor . N W E S NW NE SW SE W SN E SW NW SE NE North-up Head-up -1 -2 1 2 -1 -2 1[...]

3-16 m 150 History for last 5 minutes Echogram of beam 3 (port) Echogram of beam 1 (fore) Echogram of beam 2 (starboard) Depth mark of layer 1 Depth mark of layer 2 Depth mark of layer 3 Bottom echo Depth range Range selectable at RANGE menu Cursor for manual bottom acquisition (See procedure below.) Depth Bottom echo Echo strength Transmission pul[...]

3-17 MISCELLANEOUS DA T A W A TER TEMPERA TURE Display (T emperature data from external equipment required.) ` Y ou can switch the temperature display on and of f in MENU 1. 17.2 TEMP 15.0 20.0 11 14 5 10 15 Time scale (Span: 17 min 30 sec) Temperature range Present water temperature Range width is fixed for 5˚C. It is shifted automatically to bri[...]

3-18 MISCELLANEOUS DA T A Display (Tide A veraging T ime/T otal Mileage/Display Range) MISCELLANEOUS DA T A ` Y ou can change the unit of distance/range to km by an internal DIP switch. (Refer to installation manual.) NW NE N RANGE 10.0kt 5.0 NM NM 99999.99 AVERAGE 15sec DIST 0.5 NM Speed range Display limit of tide vector bars. Distance range Dist[...]

4-1 CHAPTER 4. SETTING OPERA TING CONDITIONS The CI-35/35H has three menus which you can preset various conditions for measurements and presentations; basic menu range menu and alarm menu. MENU LYR 3 General Rules for Menu Selection Main item selection: Turn knob. ¡ CW to move cursor upward ¡ CCW to move cursor downward ** MENU 1 ** KNOB ITEM MEN[...]

4-2 * MENU 1 * KNOB ITEM Jan/15/1997 KNOB SETUP END : MENU KEY MENU MODE : MENU1 MENU2 MENU3 MENU4 REF TIDE DIF : LAYER1 LAYER2 LAYER3 TIDE AVERAGE : 2 min TIDE HISTORY : 15 sec LAYER1 : ON OFF LAYER2 LAYER3 : ON OFF : ON OFF TIDE DIF DSP : ON OFF DRIFT DSP : DRIFT SPEED OFF EVENT : ERASE (0) TEMP DSP : ON OFF ECHO LEV DSP BACKGROUND : COLOR GRAPH [...]

4-3 * Raw tide data is obtainable every 3 sec. Tide averaging time of “1 min” means that averaged data for last one minute is displayed. (Note) Averaging time of “0 min” does not mean immediate display of raw data but average of 15 seconds. If tide vector display of a layer is switched off, the colored block circumscribing that layer number[...]

4-4 * MENU * KNOB ITEM Jan/15/1997 KNOB SETUP END : MENU KEY MENU MODE : MENU1 MENU2 MENU3 MENU4 REF DEPTH : OFF E/S BEAM TEST : OFF SELF CHECK : SINGLE DEMO DATA : OFF DP3. 4 LOG10 TRIP RESET DATE/TIME : RESET (0. 00) : TIME DATE MENU SELECT : LOCK UNLOCK MENU SET : FACTORY Knob Knob CONT1 PANEL ECHO 8 Lock/unlock switch for all the protected pres[...]

4-5 Menu items shown in red are protected (or locked) to prevent accidental change of setting. To change the setting of a protected item, follow the procedure below. 1. Place the vertical cursor on the item by using knob, and then turn knob clockwise by one step. The following message appears. 2. Turn knob clockwise by one step to select “YES”,[...]

4-6 * MENU 3 * KNOB ITEM Jan/15/1997 KNOB SETUP END : MENU KEY MENU MODE : MENU1 MENU2 MENU3 MENU4 SHIP SPD AVR : 15sec DRAFT : 0.0 m WT SPD DEPTH : 2.0 m HEEL ANGLE : 0.0 ° TRIM ANGLE GT SPD CALIB : 0.0 ° : 0.0 % WT SPD CALIB : 0.0 % BEARNG CALIB : 0.0 ° COURSE CALIB : 0.0 ° (GT 0. 0 ° ) (NAV 0. 0 ° ) EXT KP1 DIST : 0.0 m EXT KP2 DIST BTM TI[...]

4-7 NOTE 1 All the items in MENU 3, except “MENU MODE”, appear in red to show that they protected (or “LOCKED”) items. To unlock an item; 1. First, place the vertical cursor on the desired item by knob, and then rotate knob clockwise by one step. The following appears on the display. 2. Turn knob clockwise by one step to select “YES”, a[...]

4-8 * MENU 4 * KNOB ITEM Jan/15/1997 KNOB SETUP END : MENU KEY MENU MODE : MENU1 MENU2 MENU3 MENU4 TIME DATA : INT EXT WT SPEED : T/D NAV FORMAT : CIF NAV AID : GPS NAV DATA : LORAN-A : L/L TIME INT : 1min CRS CAL MODE : GT CRS CAL EXEC : START TIDE OUT INT : 15sec Knob Knob NAV-TIDE NMEA LORAN-C ALL SPD NAV DECCA MAN DR !0 Selection of data output[...]

4-9 NOTE 1 “INT”: Displays date/time of internal clock in CI- 35/35H. Time setting must be done manually in MENU 2-DATE/TIME. Time increments in every one second. “EXT”: Displays date/time received from external navigator. Generally, time is more accurate than internal clock, but it may not increment in one every second. TIME DATA NOTE 2 ?[...]

4-10 2. RANGE SET MENU RANGE 2.0kt 5.0 NM 100m 2 Distance range For course plot display 4 Color gradation range For echo level display in color mode 1 Speed range For speed vector graph 3 Depth range For echo level display 1. T o change one of the above ranges, call the RANGE SET menu by pressing the RANGE key . *RANGE SET* KNOB ITEM KNOB SETUP END[...]

4-11 3. ALARM SET MENU The ALARM menu permits selection of alarm sources and alarm parameters. ALARM FOR TIDE/TIDE DIFFERENTIAL/SHIP’S MOVEMENT This alarm is for alerting you to change in speed and direction of tide/tide dif./ship’ s movement. **ALARM SET** KNOB ITEM : ON KNOB SETUP END : ALARM 1ST LAYER : SPD 2ND LAYER : SPD 3RD LAYER : SPD SH[...]

4-12 ALARM setting procedure 1. Call “ALARM SET” menu by pressing the ALARM key . 2. By the knob, place the vertical cursor an the desired item; then select an option item by the knob. 3. Press the EVENT key . The subsequent action depends on the location of the horizontal cursor . 1) When the horizontal cursor is on a speaker mark, the EVENT k[...]

4-13 3) When the horizontal cursor is on an item which has the filled star mark “ ”, beside it, the following sub-menu appears. ALARM/ALARM ZONE SETTING KNOB SETUP SELECT : SET ZONE STOP ALM PRESS EVENT KEY TO ENTER T o make alarm setting valid; 1 Place the horizontal cursor on “SET ZONE” by knob, and press the EVENT key . The alarm zone se[...]

4-14 Alarm Priority Alarm priority is in the order as listed the Alarm menu. ALARM SET 1ST LAYER 2ND LAYER SHIP SPEED TRIP : : Highest priority Lowest priority If multiple alarm conditions are violated, alarm having the highest priority is presented as a visual alarm at the bottom of the display . There is no priority for the audible alarm; the ala[...]

4-15 T urn knob to set a distance-run, and then hit the EVENT key . A filled star mark “ ” appears aside “DIST” to show the distance alarm setting valid. T o start counting distance, press the TRIP key . Note that the alarm distance counting is perfomed internally but not shown on the display . When the preset alarm distance is reached, tim[...]

4-16 Example A. Trip distance : 1 NM Ship’s Movement Trip Time display 1 nm (Alarm limit) key pressed here. TRIP 00 : 05 : 40 00 : 00 : 00 Trip time (time-elapsed) to run 1 nm (Indication turns red and freezes.) Trip Trip Example B. Trip time : 1 hour Ship’s Movement Trip Distance display 1 hour (Alarm limit) key pressed here. TRIP 012NM 000NM [...]

5-1 CHAPTER 5. TROUBLESHOOTING 1. SELF-CHECK The CI-35/35H has a self-test facility for general diagnosis of its major circuits. If an unusual symptom is encountered during operation of the equipment, perform the self-check. If the self check reveals equipment fault, shown by the error code, report the results to the service technician when calling[...]

5-2 3. Place the item cursor on “SELF CHECK” by the knob, and then press the EVENT key . As this item is protected (locked), the following alert appears. MENU SELECT IS LOCKED SET TO UNLOCK UNLOCKED NO YES PRESS EVENT KEY TO ENTER 4. Select ‘YES’ by the knob and press the EVENT key . The color of “SELF CHECK” turns green to show the ite[...]

5-3 P ANEL The P ANEL test checks the front panel keys and controls for proper operation. Press and release each key to see if it is making (1) and breaking (0) correctly . Also, turn and knobs to see if the step count changes from 0 to 63. (CW : count up, CCW : count down) T o terminate the P ANEL test press the MENU key . PANEL TEST TIDE EFT DRIF[...]

5-4 2. ERROR INDICA TION If the unit detects abnormal operation in the transceiver unit it displays a (blinking) message and a three-digit error code and releases the audible alarm. (Error indication will not interrupt the opera- tion of the equipment.) The error codes and the corresponding status are tabulated below . If multiple items are in erro[...]

5-5 3. Internal Battery A battery fitted inside the display unit preserves data when the equipment is turned of f, and its is life is about five years. When its voltage is low no clock may display , etc. Contact your dealer to request replacement of the battery . e m a N s t r a Pe p y T. o N e d o C y r e t t a b m u i h t i LK 6 R E1 9 9 - 0 2 1 [...]

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AP-1 SPECIFICA TIONS 1. MEASURING RANGE 1) SHIP'S SPEED/COURSE Speed: [Fore-aft] -10.0kts to +30.0kts [Port-stbd] -9.9kts to +9.9kts Direction: All directions in one degree steps (0 ° to 359 ° ) (relative and true bearing) Speed Measurement Depth (Ground tracking mode): 3 m to 500 m beneath the keel (depending on sea condition) (W ater track[...]

AP-2 2) TEXT DISPLA Y ITEM (in table form) Ship's real speed: xx.x(kt) Ship's course: xxx( ° ) or 32-point notation Tide speed: x.x(kt) (for 3 layers) Tide direction: xxx ( ° ) or 32-point notation (for 3 layers) Depth of tide layer: xxx (m) (for 3 layers) T otal mileage: xxxxx. xxx (nm) Present time: xx (h) xx (m) xx (s) Ship's he[...]

AP-3 4. ACCURACY 1) SHIP SPEED ± 1 % or ± 0.1 kt 2) TIDE SPEED ± 2 % or ± 0.2 kt 3) DIRECTION ± 3.5 ° (depending on sea condition) 5. TRACKING SPEED 1) SHIP SPEED Less than 40 sec. 2) TIDE SPEED Less than 60 sec. 6. SOUNDING FREQUENCY 130kHz approx. 7. DA T A INPUT 1) HEADING DA T A Clocked-serial (AD100) .....................................[...]

AP-4 4) ANALOG SHIP SPEED Current signal for Analog Display . -3.33mA to 10.0mA/-10kt to 30kt (Maximum load 400 ohms) 5) TRUE BEARING DA T A Clocked-serial (Furuno AD-100 format) ........................ 1ch 9. MISCELLANEOUS FUNCTIONS Self-check function, Simple demonstration function 10. NA V -AIDED TIDE MEASUREMENT Even where ground tracking is u[...]

AP-5 14. DISTRIBUTION BOX DS-370 1) Input Signal (TTL level) Digital speed signal Log signal (400p/nm) Alarm signal Power on/off signal 2) Output Signal The following output boards are selective. (7 boards max.) (1) OTX board Serial Signal for DS-350/351 Digital Indicator (2) ODD board BCD serial signal for MF1 1D (LCD spec. only),MF-22D, DS-720/DS[...]