Furuno DFF1 User manual

NETWORK SOUNDER
DFF1

i
IMPORTANT NOTICES
• The descriptions in this manual are intended for readers with a good knowledge of English.
• No part of this manual may be copied or reproduced without written permission.
• If this manual is lost or worn, contact your dealer about replacement.
• The contents of this manual and equipment specifications are subject to change without notice.
• The example screens (or illustrations) shown in this manual may not match the screens you
see on your display. The screen you see depends on your system configuration and equipment
settings.
• Store this manual in a convenient place for future reference.
• FURUNO will assume no responsibility for the damage caused by improper use or modification
of the equipment (including software) by an unauthorized agent or a third party.
• Dispose of the equipment according to local regulations.

ii
Do not operate the equipment with
wet hands.
Electrical shock can result.
Do not place liquid-filled containers
on the top of the equipment.
Electrical shock can result.
Do not install the network sounder unit
where it may be subjected to rain or
water splash.
Fire or electrical shock can result if water
gets inside the equipment.
Use the proper fuse.
Use of a wrong fuse can damage the
equipment and may cause fire.
WARNING
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
Warning, Caution Mandatory Action
Prohibitive Action
SAFETY INSTRUCTIONS
The user and installer must read the appropriate safety instructions before attempting to install
or operate the equipment.
WARNING
WARNING
Do not open the equipment.
Only qualified personnel should work
inside the equipment.
Do not disassemble or modify the
equipment.
Fire, electrical shock or serious injury can
result.
Turn off the equipment immediately if
it is emitting smoke or fire.
Fire or electrical shock can result if the
power is left on.
Turn off the power immediately if water
leaks into the equipment or an object
is dropped inside the equipment.
Continued use can cause fire or electrical
shock.
Turn off the power immediately if you
feelthe equipment is acting abnormally.
If the equipment is very warm or is
emitting strange noises turn off the
power immediately and contact your
dealer for advice.
WARNING
Safety instructions for the operator
WARNING
To avoid electrical shock,
do not remove cover. No
user-serviceable parts
Name: Warning Label (1)
Type: 86-003-1011-2
Code No.: 100-236-232
A warning label is attached to the equipment.
Do not remove these labels. If a label is missing
or illegible, contact a FURUNO agent or dealer
about replacement.

iii
Standard
compass
Steering
compass
0.30 m 0.30 m
CAUTION
The transducer cable must be handled
carefully, following the guidelines
below.
•Keep fuels and oils away from the
cable.
•Locate the cable away from chemicals.
•Locate the cable away from locations
where it might be damaged.
Do not turn on the power with the
transducer exposed to air.
Damage to the transducer may result.
Observe the following compass safe
distances to prevent interference to a
magnetic compass:
WARNING
WARNING
Do not open the equipment.
Only qualified personnel should work
inside the equipment.
Turn off the power before beginning
the installation.
Fire or electrical shock can result if the
power is left on.
Confirm that is no water leakage at
the transducer and temperature
sensor.
Water leakage can sink the vessel. Also,
confirm that neither the transducer or
sensor will loosen by vibration. The
installer is solely responsible for the
installation.
Confirm that the power supply voltage
is within the rating of this equipment.
Incorrect voltage will damage the equip-
ment and may cause fire.
Safety instructions for the installer

iv
TABLE OF CONTENTS
SYSTEM CONFIGURATION ........................................................................................... v
1. MOUNTING ................................................................................................................. 1
1.1 Equipment Lists ..................................................................................................................1
1.2 Network Sounder ................................................................................................................ 2
1.3 Transducer 520-5PSD, 520-5MSD.....................................................................................3
1.3.1 Mounting location.......................................................................................................3
1.3.2 Acceptable mounting locations ..................................................................................4
1.3.3 Installation procedure ................................................................................................ 4
1.4 Transducer 525-5PWD (transom mount) ........................................................................... 6
1.4.1 Installation for flat hulls...............................................................................................6
1.4.2 Installation for deep-V hulls........................................................................................7
1.4.3 Transducer preparation..............................................................................................7
1.5 Inside Hull Mount................................................................................................................8
1.5.1 Necessary tools..........................................................................................................8
1.5.2 Remarks on installation..............................................................................................8
1.5.3 Selecting the mounting location .................................................................................8
1.5.4 Installation procedure.................................................................................................9
1.6 Optional Water Temperature Sensor ST-02MSB, ST-02PSB ..........................................10
1.7 Optional Temperature Sensors ........................................................................................11
1.7.1 Transom mount temperature sensor T-02MTB........................................................11
1.7.2 Thru-hull temperature sensor T-02MSB, T-03MSB .................................................12
1.8 Optionial Triducers ...........................................................................................................11
1.8.1 Thru-hull triducer 525ST-MSD .................................................................................13
1.8.2 Transom mount triducer 525ST-PWD......................................................................13
2. WIRING...................................................................................................................... 19
2.1 Optional Temperature/Speed Sensor, Temperature Sensor............................................20
2.2 Wiring Optional 1 kW Transducer.....................................................................................21
3. INITIAL SETTINGS, OPERATION ............................................................................ 23
3.1 Selecting the Transmission Power ...................................................................................23
3.2 MODE SW ........................................................................................................................24
3.3 Operation Check (LED) ....................................................................................................25
4. MAINTENANCE......................................................................................................... 27
4.1 Maintenance .....................................................................................................................27
4.2 Replacing the Fuse...........................................................................................................28
PACKING LIST............................................................................................................ A-1
OUTLINE DRAWINGS ................................................................................................ D-1
INTERCONNECTION DIAGRAM ................................................................................ S-1

v
SYSTEM CONFIGURATION
Network Sounder
DFF1
Radar
Plotter
12-24 VDC
Transducer
520-5PSD
525-5PWD
520-5MSD
Triducer
525ST-MSD
525ST-PWD
Rectifier
PR-62
100/110/220/230 VAC,
1φ, 50/60 Hz
: Standard supply
: Optional supply
: External equipment
Speed/temperature
sensor
ST-02MSB
ST-02PSB
Temperature
sensor
T-02MTB
T-02MSB
T-03MSB
Radar
Plotter
Radar
Plotter
Radar
Plotter
HUB*
*: HUB may be connected to 3 sets of NavNet radar or plotter.
NavNet series
NavNet series
1 kW
Transducer
50B-6/6B
50B-9B
Transducer
200B-5S
Matching Box
MB-1100
Transducer
50/200-1T
50/200-12M

1
1. MOUNTING
1.1 Equipment Lists
Standard supply
Optional supply
Name Type Code No. Qty Remarks
Network Sounder DFF1 - 1
Spare Parts SP02-05201 001-007-860 1 set Fuse
Installation Materials CP02-08100 000-010-153 1 set Power cable, LAN cable,
Self-tapping screws
Name Type Code No. Remarks
Matching Box MB-1100 000-041-353 For 1 kW
Cable Assy. MJ-A6SPF0017-010C 000-159-704-11 1 m, for NavNet
MJ-A6SPF0017-100C 000-159-706-11 10 m, for NavNet
MJ-A6SPF0017-200C 000-159-707-11 20 m, for NavNet
MJ-A6SPF0017-300C 000-159-708-11 30 m, for NavNet
MJ-A6SRMD/TM11AP8-005 000-144-463 For HUB
Inner Hull Kit S 22S0191-2 000-802-598
Triducer 525ST-MSD 000-015-263 Thru-hull mount
525ST-PWD 000-015-261 Transom mount
Transducer 520-5PSD 000-015-204 Thru-hull mount
520-5PWD 000-015-126 Transom mount
520-5MSD 000-015-212 Thru-hull mount
50B-6 000-015-042 10 m, 1 kW
50B-6B 000-015-043 15 m, 1 kW
50B-9B 000-015-065 15 m, 1 kW
200B-5 000-015-027 10 m, 1 kW
200B-5S 000-015-029 10 m, 1 kW
50/200-1T 000-015-170 10 m, 1 kW
50/200-12M 000-015-171 10 m
Speed/Tempera-
ture Sensor
ST-02MSB 000-137-986 Thru-hull mount
ST-02PSB 000-137-987 Thru-hull mount
Temperature
Sensor
T-02MTB 000-040-026 Transom mount
T-02MSB 000-040-040 Thru-hull mount
T-03MSB 000-040-027
Cable Assy. 02S4147 000-141-082 For Speed/Temp sensor,
Temp. sensor
Rectifier PR-62 000-013-484 100 VAC
000-013-485 110 VAC
000-013-486 220 VAC
000-013-487 230 VAC

2
1.2 Network Sounder
The network sounder can be installed on a desktop, deck or on a bulkhead. When se-
lecting a mounting location for the network sounder, keep the following in mind:
• The temperature and humidity should be moderate and stable.
• Locate the unit away from exhaust pipes and vents.
• The mounting location should be well ventilated.
• Mount the unit where shock and vibration are minimal.
• Keep the unit away from electromagnetic field-generating equipment such as
motors and generators.
• Leave slack in cables for maintenance and servicing ease.
• A magnetic compass will be affected if the network sounder is placed too close to it.
Observe the compass safe distances noted in the safety instructions to prevent dis-
turbance to the magnetic compass.
• Fasten the network sounder to the mounting location with four self-tapping screws
(4×20).

3
1.3 Transducer 520-5PSD, 520-5MSD
1.3.1 Mounting location
.The performance of this sounder is directly related to the mounting location of the
transducer, especially for high-speed cruising. The installation should be planned in
advance, keeping the standard cable length and the following factors in mind:
• When the boat has a keel, the transducer should be at least 15-30 cm away from it.
Typical thru-hull mountings are shown in the figure on the next page.
• Air bubbles and turbulence caused by movement of the boat seriously degrade the
sounding capability of the transducer. The transducer should, therefore, be located
in a position where water flow is the smoothest. Noise from the propellers also
adversely affects performance and the transducer should not be mounted nearby.
The lifting strakes are notorious for creating acoustic noise, and these must be
avoided by keeping the transducer inboard of them.
• The transducer must always remain submerged, even when the boat is rolling,
pitching or up on a plane at high speed.
• A practical choice would be somewhere between 1/3 and 1/2 of the boat's length
from the stern. For planing hulls, a practical location is generally rather far astern,
so that the transducer is always in water regardless of the planing attitude.
Dimensions of transducers 520-5PSD, 520-5MSD
22 24
120 120
68
68 87
30 28
520-5PSD 520-5MSD
All dimensions
in millimeters
Ship's
bow

4
1.3.2 Acceptable mounting locations
Deep-V hull
Transducer mounting location on deep-V hull
High speed V-planing hull
Transducer mounting location on high speed V-planing hull
* Position 1/2 to 1/3 length of the hull from stern.
* 15-30 cm from center line (inside first liftin
g
strakes).
* Within the wetted bottom area
* Deadrise angle within 15°

5
1.3.3 Installation procedure
1. With the boat hauled out of the water, mark the location selected for mounting the
transducer on the bottom of the hull.
If the hull is not level within 15° in any direction, fairing blocks made out of teak
should be used between the transducer and hull, both inside and outside, to keep
the transducer face parallel with the water line. Fabricate the fairing block as
shown below and make the entire surface as smooth as possible to provide an
undisturbed flow of water around the transducer.
The fairing block should be smaller than the transducer itself to provide a channel
to divert turbulent water around the sides of the transducer rather than over its
face.
Construction of fairing block
2. Drill a hole just large enough to pass the threaded stuffing tube of the transducer
through the hull, making sure it is drilled vertically.
3. Apply a sufficient amount of high quality caulking compound to the top surface of
the transducer, around the threads of the stuffing tube and inside the mounting
hole (and fairing blocks if used) to ensure watertight mounting.
4. Mount the transducer and fairing blocks and tighten the locking nuts. Be sure that
the transducer is properly oriented and its working face is parallel to the water line.
Note: Do not over-stress the stuffing tube and locking nuts through excessive tighten-
ing, since the wood block will swell when the boat is placed in the water. It is suggested
that the nut be tightened lightly at installation and retightened several days after the
boat has been launched.
BOW
Hole for
stuffing tube
Upper
half
Lower
half
Saw along slope of hull.
Flat washer
Rubber
washer
Hull bottom
Hull
bottom
Deep-V Hull Flat Hull
Fairing block

6
1.4 Transducer 525-5PWD (transom mount)
This type of mounting is very commonly employed for outboard motor boats. Do not
use this method on an inboard motor boat because turbulence is created by the pro-
peller ahead of the transducer.
There are two methods of installation: flush with hull (for flat hulls) and projecting from
hull (for deep V-hulls).
Transom mount transducer mounting locations
1.4.1 Installation for flat hulls
A suitable mounting location is at least 50 cm away from the engine and where the
water flow is smooth.
1. Drill four pilot holes in the mounting location.
2. Attach the transducer to the bracket with self-tapping screws (supplied).
3. Adjust the transducer position so the transducer faces right to the seabed.
Note: If necessary, to improve water flow and minimize air bubbles staying on the
transducer face, incline the transducer about 5° at the rear. This may require a
certain amount of experimentation for fine tuning at high cruising speeds.
4. Fill the gap between the wedge front of the transducer and transom with epoxy
material to eliminate any air spaces.
Transom mount transducer, mounting flush with hull
Flat Hull Deep V-hull
M5x20
Tape

7
1.4.2 Installation for deep-V hulls
This method is employed on deep-V hulls and provides good performance because
the effects of air bubbles are minimal. Install the transducer parallel with water surface;
not flush with hull. If the boat is placed on a trailer care must be taken not to damage
the transducer when the boat is hauled out of the water and put on the trailer.
Transom mount transducer, projecting from hull
1.4.3 Transducer preparation
Before putting the boat in water, wipe the face of the transducer thoroughly with a de-
tergent liquid soap. This will lessen the time necessary for the transducer to have good
contact with the water. Otherwise the time required for complete "saturation" will be
lengthened and performance will be reduced.
Note: Do not paint the transducer. Performance will be affected.
No.2 M5x14
M5x20
M5x20

8
1.5 Inside Hull Mount
This mounting method is available for FRP boats.
1.5.1 Necessary tools
You will need the following tools:
• Sandpaper (#100)
• Silicone sealant
• Silicone grease
1.5.2 Remarks on installation
• Turn off the engine and anchor the boat while installing the equipment.
• Install the transducer in the engine room.
1.5.3 Mounting location
Keep the following points in mind when selecting a mounting location:
• The mounting location should be where the hull is of single-hull thickness and is
void of air or flotation materials other than solid fiberglass between the transducer
face and the water.
• Do not place the transducer over hull struts or ribs which run under the hull.
• Avoid a location where the rising angle of the hull exceeds 15°, to minimize the
effect of the boat's rolling.
• You will finalize the mounting location through some trial and error. The procedure
for this is shown later.
Inside-hull transducer mounting location
50cm
50cm
15cm
15cm
1/3
1/2
Mounting location
for transducer
Center line

9
1.5.4 Installation procedure
1. Clean the transducer face to remove any foreign material. Lightly roughen the
transducer face with #100 sandpaper. Also, roughen the inside of the hull where
the transducer is to be mounted.
2. Warm the silicone sealant to 40°C before usage to soften it. Coat the transducer
face and mounting location with silicone sealant.
Coating the transducer face with silicone sealant
3. Press the transducer firmly down on the hull and gently twist it back and forth to
remove any air which may be trapped in the silicone sealant.
Attaching transducer to hull with silicone sealant
4. Connect this unit to NavNet equipment and turn on the NavNet equipment.
5. Set up the NavNet equipment to show “single frequency display”.
6. Set the gain to “50”.
7. Set the range to “10”.
Case 1
The installation is proper if the bottom echo is displayed in red and the depth indi-
cation is shown. Go to step 9.
Case 2
The bottom echo is not displayed in red when ultrasound attenuation is great. Re-
locate the transducer as shown in step 8
8. Re-locating the transducer.
1) Turn off the power.
2) Detach the transducer. Insert a knife or wooden stick under transducer to
remove it
3) Repeat steps 1 thru 7.
9. Fix the transducer.
Transducer face
Silicone sealant
Hull Silicone sealant
Twist to squeeze out air bubbles.

10
1.6 Optional Water Temperature Sensor ST-02MSB,
ST-02PSB
Select a suitable mounting location considering the following points:
• Select a mid-boat flat position. The sensor does not have to be installed perfectly
perpendicular. The sensor must not be damaged in dry-docking operation.
• Select a place apart from equipment generating heat.
• Select a place in the forward direction viewing from the drain hole, to allow for circu-
lation of cooling water.
• Select a place free from vibration.
Procedure
1. Dry-dock the boat.
2. Make a hole of approx. 51 mm in diameter in the mounting location.
3. Unfasten locknut and remove the sensor section.
4. Apply high-grade sealant to the flange of the sensor.
5. Pass the sensor casing through the hole.
6. Face the notch on the sensor toward boat's bow and tighten the flange.
7. Set the sensor section to the sensor casing and tighten the locknut.
8. Launch the boat and check for water leakage around the sensor.
Speed/Temperature sensor ST-02MSB, ST-02PSB
Locknut
123
Face "notch"
toward bow.
Flange nut
Coat with
silicone sealant.
51
Brim
φ77

11
1.7 Optional Temperature Sensors
1.7.1 Transom mount temperature sensor T-02MTB
• Fix the cable at a convenient location with cable clamp.
• When the cable is led in through the transom board, make a hole of approx. 17 mm
in diameter to pass the connector. After passing the cable, fill the hole with a seal-
ing compound.
Temperature sensor T-02MTB
M5x20
Mount sensor
flush with hull bottom.
D
D>50cm

12
1.7.2 Thru-hull temperature sensor T-02MSB, T-03MSB
Select a suitable mounting location considering the following points:
• Select a mid-boat flat position. The sensor does not have to be installed perfectly
perpendicular. However, the location should not be such that the transducer may be
damaged when the boat is dry-docked.
• Locate away from equipment which gives off heat.
• Locate away from drain pipes.
• Select a location where vibration is minimal.
Assembling temperature sensor T-02MSB, T-03MSB
Sensor
Cable
Locknut
Washer
Rubber Gasket
φ21 mm
Apply sealant.
T-02MSB
Locknut
Locknut
Washer
Rubber Gasket
Apply sealant.
Thicker
than 25 mm
T-03MSB
Sensor Holder
Holder Guide

13
1.8 Optional Triducers
1.8.1 Thru-hull triducer 525ST-MSD
See section 1.2 for how to install the 525ST-MSD.
1.8.2 Transom mount triducer 525ST-PWD
Pre-test for speed and temperature
Connect the sensor to the instrument and spin the paddlewheel. Check for a speed
reading and the approximate air temperature. If there is no reading, return the sensor
to your place of purchase.
Tools and materials needed
• Scissors
• Masking tap
• Safety goggles
• Dust mask
• Electric drill
• Drill bit for:
- Bracket holes: 4mm, #23, or 9/64"
- Fiberglass hull: chamfer bit (preferred), 6mm, or 1/4"
- Transom hole: 19mm or 3/4" (optional)
- Cable clamp holes: 3mm or 1/8"
• Screwdrivers
133 mm
27 mm
φ 79 mm
Unit: mm
Thread
140 mm
f 51 mm
2.00
°7 mm

14
• Straight edge
• Marine sealant
•Pencil
• Zip-ties
• Water-based antifouling paint (mandatory in salt water).
Mounting location
To ensure the best performance, the sensor must be submerged in aeration-free and
turbulence-free water. Mount the sensor close to the centerline of the boat. On slower
heavier displacement hulls, positioning it farther from the centerline is acceptable.
Allow adequate space above the bracket for it to release and rotate the sensor up-
ward.
Height required at mounting location
Note 1: Do not mount the sensor in an area of turbulence or bubbles: near water in-
take or discharge openings; behind strakes, struts, fittings, or hull irregularities; behind
eroding paint (an indication of turbulence).
Note 2: Avoid mounting the sensor where the boat may be supported during trailering,
launching, hauling, and storage.
Note 3: For single drive boat, mount on the starboard side at least 75 mm (3") be-
yond the swing radius of the propeller.
Mounting location on single drive boat
Note 4: For twin drive boat, mount between the drives.
Heig
ht
H
eight without
s
peed sensor
1
91mm (7-1/2")
H
eight with
s
peed sensor
2
13mm (8-1/2")
75 mm (3")
minimum beyon
d
swing radius