To enjoy safe operation, read and fully understand the contents of this operating manual before attempting to operate the equipment. Store this operating manual in a safe and convenient place where it can be referred to easily when needed..
Thank you very much for purchasing our product, he-770. ■ please be sure to read this operating manual carefully and understand the contents before the actual operation in order to keep your safety. ■ please store this manual safely at the convenient place so that you can read it when needed. ■ plea...
Table of contents 1. Caution on safety (be sure to read this) ·····························1 1-1. Caution on safety···································································1 1-2. Handling of cable ···································································2 1-3. Handling of transdu...
Water temp graph······································································31 color configuration ·····································································31 background color ·······································································31 16-2. Menu 2 ···············...
This section explains the important cautions in order to prevent the users and surrounding people from physical injuries and property damages. 1-1. Caution on safety 1. Caution on safety (be sure to read this) ● high voltage is used for the unit inside. No one besides authorized personnel should dis...
2 1-2. Handling of cable ● do not install the unit where rain or spray dashes hit directly. It causes the firing and electronic shock. ● do not install the unit at heated places. It causes the firing from the increase of internal temperature, injury, and electronic shock. ● away from direct sun ligh...
3 1-3. Handling of transducer and water temp sensor ● any works on the boat are very unstable and risky. Installation/maintenance of transducer and water temp sensor should be handled after landing the vessel on ground or fixing the vessel at shipyard etc. ● be sure to ventilate well inside the vess...
1-5. Caution of operation battery voltage varies when the engine starts. It may cause some damage onto the unit. Set the power off when starting the engine. * battery may go flat by operating the unit with engine off condition. Power off when starting engine operate the unit within the range of dc 1...
2. Feature ★ dual frequency (50khz/200khz) is supported. ★ crystal clear precision 7 inch wide lcd (led backlight) ★ low power consumption ★ automatic gain/depth control function ★ multiple installations supported display mode can be changed (vertical/horizontal) for different installations. ★ easy ...
3. Specifications display 7 inch wide color lcd number of pixel 480×234 operating voltage dc11v ~ 35v power consumption 8.4w dimension 230 ( h ) ×236 ( w ) ×108 ( d ) mm weight approx. 1.4kg frequency 50, 200khz output power 600w dis pla y depth range 3~1000m auto range off/range/shift auto gain off...
7 display unit power supply cable (dc06) 2p 2m display unit fixation screw screw for built-in fixation disk plate transducer paper temperate for built-in fixation operating manual 4. Standard configuration bracket 1pc clamping knob 2pcs washer 2pcs rubber ring 2pcs 4×30 sus x4pcs 5×20 sus x4pcs ×2 t...
5. Dimension unit : mm 8.
9 6. Installation of unit ● install the unit firmly. If not, it may cause the human injuries. Install the unit correctly according to the following instruction. For overhead mounting, install the unit to safe location with the consideration of dropping incident. ● install the unit to the location wi...
10 7. Built-in installation ● install the unit firmly. If not, it may cause the human injuries. Install the unit correctly according to the following instruction. [procedure of built-in installation] fix the unit by using 4 holes on the front panel. Cover for built-in installation (4 locations) 1. C...
2. Remove the covers (4pcs) on the front panel. 5. Fix it with m4×30 tapping screws. (4pcs ) 6. Put the covers back to the unit. (4pcs) 3. Pull the cover toward front side for the removal. (space) 4. Locate the unit to the space. 11.
8. Connection with unit 12 temp sensor (option) nmea input/output transducer (td28 or td26) battery 11~35 V dc white (+) black (-).
13 9. Installation of transducer [installation methods] the following installations can be applied. Please refer to the each instruction. 1. Inside-hull 2. Thru-hull 3. Inside case these methods prohibit the use of aluminum vessels for the risk of corrosion. Be careful about the following points whe...
Effective for frp vessels with single hull layer of 10mm or less. Look for the best picture location before the fixation by putting adequate water on the transducer surface and vessel bottom followed by pressing the transducer onto the vessel bottom. ( 1 ) polish the adhesive surface (transducer bot...
9-3. Inside case effective for frp vessels with single hull layer of 10mm or less. Look for the best picture location before the fixation by putting the transducer inside the case. ( 1 ) take out all the water inside the case. ( 2 ) when installing the transducer at the bottom of case, please refer ...
Connector for input/output used for nmea input/output. Transfer rate data format transfer format nmea0183 start bit = 1, data bit=8 4800 bps (gga, vtg) parity bit =none, stop bit=1 10. Connecting diagram nmea unit data output external power input/output connector nmea input/output 16.
11-1. Front panel 11. Description of control keys ① power on key ( → page 19) set the power on. ② power off key ( → page 19) set the power off. ③ brightness key ( → page 19) adjust the backlight brightness. ④ zoom key ( → page 24) change the display mode. Display changes every time pressing this key...
12. Display information dual frequency mode ※ 1 18 longitude speed direction latitude voltage depth unit depth water temp display 2 nd echo color bar shown only under auto mode. Auto mode display sweep speed frequency display for the right side frequency display for the left side when using the spec...
13-2. Brightness key 13-1. Power key 13. Operation power on/off set the power on/off of unit. P 1 ress&hold [on] key for 1sec or more to set the power on after alarm sound. The display appears on the screen. Press [off] key to set the power off after alarm sound. ※ [off] key is disabled during the s...
13-3. Clutter key clutter press clutter key to adjust the color. The color bar on the left side changes. Press&hold [clutter] key to remove he color of weak reflection. T press&hold [clutter] key to display the color of strong reflection. [clutter] fish school or sea bottom is shown by the strength ...
13-4. Shift key possible to shift the display range of depth. For example, execute 10m shift to 0~8m display range. The changed range will be 10~18m. Also, you can expand small target with this feature. Shift key 1 press shift key to move the display range. Depth display is changed. [shift to shallo...
13-5. Gain key [sensitivity] adjust the sensitivity in order to detect the sea bottom and fish school. (numeric and bar display of 32 steps from 0~31) the optimized sensitivity is where 2 nd reflected echo appears some on the screen. [2 nd echo] 1 st echo is the primary reflected echo from the sea b...
13-6. Range key [depth (display range)] set-up the depth (display range) from the water surface. Select from 23 steps: min 0~3m to max 0~1000m. 23 5 3 8 10 15 20 30 40 50 60 80 100 125 150 180 200 250 300 400 500 m 0 600 800 1000 depth key [deep range] press [range] key for deep range. Press range k...
13-7. Zoom key press key to change the mode. Current selection is shown on the top left of screen. Normal picture appears when zoom mode is off. (bottom lock) bottom contour is indicated as a straight line. (auto. Expansion) the bottom is expanded and shown. (expansion range marker cannot be moved.)...
13-8. User key 1 sweep 2 picture 3 scale line 4 temp graph 5 color 6 back grd [frz,1,2,3,4,×2,×3] [50+200] [off,on] [off,2°,10°] [1,2,3,4,5,6] [ ] [menu]:to menu 2 press key (user). Set-up display appears. Set-up is changed in order every time pressing key. Direction key [ , ] can be used to change ...
13-10. Menu key 13-9. Auto key press key to display menu 1 and 2. Direction key [ , ] to select. Direction key [ , ] to change the set-up. Press or key to end the set-up display. ※ refer to page29 for menu in details. Use key, direction key [ , , , ], key, and key to select the function from menu di...
14. Menu list and each meaning menu 1 meaning 1.Sweep set the sounding rate per one sweep. Frz 1 2 3 4 x2 x3 2.Picture set the frequency of display on screen. 50 200 200+50 50+200 3.Scale line indicate the line on the depth graduation. Off on 4.Temp graph display water temp graph. (water temp sensor...
28 menu 2 meaning 4.Pulse length select the pulse width. S m l 5.Auto key set enable/disable following automatic functions. 1.Auto g: adjust the sensitivity automatically. Off on 2.Auto r: adjust the depth automatically. Off rng sft 4.Readout 1 1.Depth dig select the depth digit size. Off s l 2.Supe...
29 15. Menu 1 sweep 2 picture 3 scale line 4 temp graph 5 color 6 back grd [frz,1,2,3,4,×2,×3] [50+200] [off,on] [off,2°,10°] [1,2,3,4,5,6] [ ] [menu]:to menu 2 1 exp rate 2 a-mode 3 split screen 4 alarm 5 others [×2,×4,×8] [off,on] [l/r,u/d] [menu]:to finish menu operation to display menu mode pres...
16-1. Menu 1 16. Functions in menu sweep / sounding fast slow freeze sweep speed s 1 elect [1. Sweep] in menu 1. Set the sweeping speed. (7 steps: frz, 1, 2, 3, 4, x2, x3) [sweeping speed] for fishfinder display, the latest image (image beneath the vessel) is located at the right edge of display. At...
S 1 elect [3. Scale line] in menu 1. S o et the scale line. N : enable off : disable horizontal lines appear at the depth scale. 2 scale line water temp graph water temp graph appears. It ’ s easy to see the fishing points by knowing the variation of water temperatur tide change. E and 1 2 color con...
16-2. Menu 2 expansion ratio s 1 elect [1. Exp rate] in menu 2. Select the ratio. ×2, ×4, ×8 the expansion ratio can be selected from x2, x4, or x8. 2 u/d : up/down. Split screen s 1 elect [3. Split screen] in menu 2. Divide the display. L/r: left/right. Possible to split the display left/right or u...
S 1 elect [4. Alarm] → [1.Temp alarm] in menu 2. Set the alarm condition. In range : alarm is on within the range of 2 selected temperature. Temp display blinks. Out range : alarm is on outside the range of 2 selected temperature. Temp display blinks. Off : temp alarm is off. [water temp alarm] alar...
Select [4. Alarm] → [3. Fish alarm] in menu 2. : high sensitivity mode to detect small fish schools. : low sensitivity mode to detect only big fish schools. Off : fish alarm is off. Alarm is on when the fish is detected. 1 2 ※ 1 ) it may show the objects other than fish. ※ 2 ) fish alarm is only eff...
Select [5. Others] → [1. Unit set] → [2. Scale unit] in menu 2. Select the unit. Select the depth unit: m, hr, ft, fa, or br. 1 2 unit set : depth set select [5. Others] → [2. Adjust] → [1. Keel offset] in menu 2. Use [ , ] to change the value. Keel offset can be applied to indicate the depth from t...
36 other set : auto range select the search range when executing the auto range function. Select [5. Others] → [3. Other set] → [1. Auto r max dep.] in menu 2. Use [ , ] to change the depth. (30m, 50m, 100m, 200m, 300m, 500m) maximum auto range leads to longer detection time. Also, it may show the w...
37 other set : pulse length select the pulse width. The theory of fishfinder is same as echo in water. Pulse length is the length of ultrasonic transmitted. Resolution for depth direction is changed by the selection from 3 types of pulse length (short, medium, long). S 1 elect [5. Others] → [3.Other...
38 other set : auto key press key (auto) to enable/disable (on/off) the preset function. E.G. 1) when setting to auto gain [on] and auto range [range], press key (auto) to activate auto gain [on] and auto range [range]. Press key (auto) again to deactivate them. E.G. 2) when setting to auto gain [on...
39 readout 1 : depth possible to change the digit size of depth indication. Select [5. Others] → [4. Readout 1] → [1.Depth dig] in menu 2. 1 o ff : off s : small digit indication 2 l : large digit indication readout 1 : super range whole picture keeps rewriting according to the changed depth (synchr...
40 readout 1 : depth marker s 1 elect [5. Others] → [4. Readout 1] → [3. Depth marker] in menu 2. C olor : depth marker color selection. Off : off 2 readout 1 : color bar s 1 elect [5. Others] → [4. Readout 1] → [4. Color bar] in menu 2. On : color bar is on off : off readout 2 s 1 elect [5. Others]...
41 demo system menu : simulation simulation mode set-up. S 1 elect [5. Others] → [6. System menu] → [1. Simulation] in menu 2. O portrait landscape portrait rev landscape rev ff : off on : simulation is on. 2 ※ demo is shown on the right bottom of screen. System menu : display display view can be se...
42 system menu : system reset select [5. Others] → [6.System menu] → [3. System reset] in menu 2. 1 execute the system reset in order to set the unit back to factory set-up. 1 simulation [off,on] 2 display [landscape] 3 system reset setting by [set] key cancel by [clr] [menu]:to previous menu [set] ...
43 17. Theory of fishfinder 1 . theory of fishfinder ● theory of fishfinder is same as echo among hills ultrasonic wave transmitted from the transducer directly beneath the vessel is reflected at the sea bottom and received by transducer. Fishfinder indicates the depth by calculating the round-trip ...
2 . distinguish of fish school ● important tip is comparison between fish school image and actual catch possible to judge the fish type to some extent from the image of fish school. The shape of fish school changes even for same fish group by time(day/night, season, current change). The important ti...
45 ● when the unit has any problems, please check the following points before sending back the unit for repair. Symptoms cause remedy voltage of battery is lower than standard value (11v). Recharge the battery. Contact of power connector is poor. Retighten it. Remove and clean the rust/dust. Replace...
Symptoms cause remedy 46 too low sensitivity. Increase the sensitivity. Or, set to auto gain (auto sensitivity control). Rubbish and weed attached on the transducer surface. Dirty bottom or liquid. Remove the excrescence. Remove the dirt from bottom and exchange the liquid. Water and environmental c...
47 overseas sales division 20 oyamazuka,oiwacho,toyohashi, aichi 441-3193 japan tel:+81-532-41-2512 fax:+81-532-41-4441 url:http://www.Honda-el.Co.Jp/.