Rhodan HD GPS+ ANCHOR User manual

www.rhodanmarine.com
Owner’s Manual
Precision GPS Guided Trolling Motor

www.rhodanmarine.comRhodan Marine Systems • 8297 Blaikie Court • Sarasota, Florida 34240 • Phone [phone] • Fax [phone] CUSTOMER SERVICE: 1-888-434-7726 32
SPECIFICATIONS
Anchor Memory Locations 4
Multi-use Memory Locations (route or anchor) 8
Maximum Course Memory Length 1000+ Miles*
Thrust Rating 36V System @ 120lb
24V System @ 80lb
12V System @ 55lb
Operating Voltage 12V, 24V or 36V (Depending on model)
Amperage 0-42 Amps**
Recommended Breaker Rating 50 Amps
Propeller 3 Blade Weedless
*The length of a recorded route will generally be limited by the time
required to physically traverse a route or the battery capacity to retrace
it. The system has sufficient memory capacity to store over 1000 miles
of courses.
**System current draw will vary with thrust level up to a maximum of 42
amps at 100% thrust.
TABLE OF CONTENTS
SYSTEM FEATURES 4
POWERING UP THE UNIT 5
DEPLOYING THE UNIT 6
STOWING THE UNIT 6
MODES OF OPERATION 7
1. MANUAL MODE 7
2. ANCHOR MODE 8
3. TRACK MODE 10
4. ROUTE MODE 11
APPENDIX A: GENERAL INFORMATION 12
APPENDIX B: INSTALLATION CHECKLIST 12
APPENDIX C: PHYSICAL INSTALLATION 13
APPENDIX D: ELECTRICAL INSTALLATION 16
APPENDIX E: PROPELLER INSTALLATION 18
APPENDIX F: CALIBRATIONS 19
APPENDIX G: FOB FEATURES 21
APPENDIX H: MAINTENANCE & STORAGE 22
STATUS LIGHTS 23
WARRANTY 24
CUSTOMER SERVICE 24
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS.
Failure to follow all enclosed instructions may result in personal injury
or loss of warranty.
FCC COMPLIANCE STATEMENT
FCC ID:XA7-RMS-FOB1
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference
that may cause undesired operation.
This device complies with FCC Rules. Changes or modifications not expressly
approved by Rhodan could void the user’s authority to operate the equipment.
Congratulations on choosing this unique product. The Rhodan Marine Systems HD
GPS ANCHOR+ will dramatically add to your angling efficiency and enjoyment.
Powerful and quiet, this precision engineered product will automatically keep your
boat positioned at your chosen location or at your command, maintain the boat on
a chosen route, leaving you free to concentrate on fishing.

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The system is able to operate in Manual Mode immediately when powered up and
deployed. The Anchor Mode and Track Mode will be available in approximately 30
seconds once the unit has acquired a GPS fix. |
The unit will emit 2 “beeps” and status light will flash green, amber, red
sequence to indicate that it is powered up.
The unit will emit 4 rapid “beeps” and GPS status light will show steady
amber or green to indicate that it has acquired a GPS fix.
HEAD
STEERING ASSEMBLY
TILT/LOCK LEVER
QUICK RELEASE BRACKET
DIRECTIONAL ARROWS
OR MEMORY BUTTONS
FUNCTION BUTTONS
OFF BUTTON
WIRELESS CONTROL FOB
COMPOSITE SHAFT
CARRY HANDLE
LOWER UNIT
STORAGE CRADLE
DEPTH ADJUSTMENT
COLLAR
POWERING UP THE UNIT
BATTERY LEVEL METER
Press and hold the off button for 5 seconds to check the state of charge of the system
batteries. The system will emit between one and five beeps which define the amount
of energy remaining in the batteries.
This function will stop all thruster and steering operations and use the precision
voltage reference of the system to determine the battery’s remaining charge. State of
charge levels are based on voltage to charge references for ideal lead acid batteries
from leading battery manufacturers.
SYSTEM FEATURES
The GPS accuracy will continue to improve for several minutes after being
powered up. It is suggested that you apply power to the GPS ANCHOR early
in the trip so that it will achieve maximum accuracy before being used. The system
is equipped with a “Tilt” sensor that prevents the propeller from running in the
stowed position.
# of Beeps Battery Level 36V 24V 12V
5 >95% >37.80 >25.20 >12.60V
4 80%–95% 37.26V–37.80V 24.84V–25.20V 12.42V–12.60V
3 60%–80% 36.60V–37.26V 24.40V–24.84V 12.20V–12.42V
2 40%–60% 35.70V–36.60V 23.80V–24.40V 11.90V–12.20V
1 20%–40% 34.50V–35.70V 23.00V–23.80V 11.50V–11.90V
1 Growl <20% <34.50V <23.000V <11.50V

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DEPLOYING THE UNIT
Loosen the depth adjustment collar and
slide it up the shaft to a position that will
give the desired motor depth. Firmly hand
tighten the adjustment knob to secure the
collar.
Step on the Tilt/Lock Lever and slide the
motor forward until the lower unit is clear of
the storage cradle.
Carefully tilt the unit forward and lower the
motor until the depth adjustment collar is
engaged with the steering bosses. The
Tilt/Lock Lever can be released as soon
as the motor begins to tilt. Once the unit is
fully deployed, verify that the lever has fully
returned to its up and locked position.
Step on the Tilt/Lock Lever. Grasping the
head of the unit, pull it up and then back
until the lower unit rests securely in the
storage cradle. Release the Tilt/Lock Lever
and verify that it returns fully to its up and
locked position. Slide the depth adjust-
ment collar down until it is in contact with
the steering bosses, then very firmly hand
tighten the adjustment knob to secure the
unit. Done properly the unit cannot deploy.
WARNING! Failure to secure the unit with the depth adjustment collar
when stowed can result in accidental deployment during extremely rough
pounding seas which will not be covered by the warranty.
STOWING THE UNIT
The system will automatically be in manual mode when placed in the deployed
position or the “M” or “OFF” buttons are pressed.
The unit will emit 1 “beep” to indicate
that it has entered Manual Mode.
In the Manual Mode the GPS ANCHOR system behaves much like a
conventional trolling motor, by allowing the user to control the direction
and thrust level using the directional controls on the wireless fob.
THRUST
The system is equipped with 32 forward and 16 reverse speeds.
Momentarily pressing the Up-Arrow or Down-Arrow buttons will
increment the thrust level accordingly. Holding the Up-Arrow or Down-
Arrow buttons will cause the thrust level to ramp until the maximum level is
reached or the button is released. It will take 4 seconds for the system to
ramp from 0 to 100% thrust or vice versa.
The unit will emit 1 “beep” when it reaches 100% forward thrust,
0% thrust or 100% reverse thrust.
STEERING
Pressing the Left-Arrow or Right-Arrow buttons will cause the trolling
motor to turn left or right, respectively. The steering travel is limited to
avoid wrapping up the system power cord.
MODES OF OPERATION
1. MANUAL MODE

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RECALLING A STORED ANCHOR SITE
From any mode, while holding down the “A” button, press and release the
appropriate directional button. The “A” button can then be released and
your boat will navigate in a straight line directly to that location and anchor
at the selected, previously recorded site.
The unit will “beep a tune” (multiple consecutive beeps) to indicate
that the anchor site has been successfully retrieved.
The unit will emit two “growls” and exit if the memory location
is empty or the boat is not within 1 mile of a memorized location.
RECALLING LAST ANCHOR SITE
From any mode, press and hold the “A” button for 5 seconds. The “A”
button can then be released and your boat will navigate directly to the last
anchor location used.
The unit will “beep a tune” (multiple consecutive beeps) to indicate
that the anchor site has been successfully retrieved.
The unit will emit two “growls” and exit if there is no active last
memory location or the boat is not within 1 mile of the previous location.
2. ANCHOR MODE
To place the system in Anchor Mode, press the button with the “A” symbol
on the wireless fob. The system will instantly lock in the anchor coordi-
nates and begin maintaining position.
The unit will emit 1 “beep” to indicate that it has entered
Anchor Mode.
The unit will emit two “growls” then exit this mode
if there is no GPS fix
The Anchor Mode automatically controls the steering and thruster speed to maintain
the position of the boat’s bow, acting as a “Virtual Anchor”.
ADJUSTING THE ANCHOR LOCATION (JOGGING)
Pressing any of the directional controls on the wireless fob (Up, Down,
Left, or Right) moves (jogs) the “Anchor Location” in precise 5-foot incre-
ments relative to the boat’s heading. For example, pressing the Right-
Arrow once moves the “Anchor Location” 5-feet to the right of the boat’s
bow.
The unit will emit 1 “beep” for each increment the
Anchor location is moved.
STORING (OR OVERWRITING) AN ANCHOR SITE
From any mode, simultaneously press and hold the “A” button and one of
the directional buttons for 5 seconds. The buttons can then be released
and your boat will be anchored at this newly recorded site.
The unit will emit a 1 second “beep” to indicate that the
anchor site has been successfully saved.
The embedded system computer will be operating the trolling motor causing
the bow of the boat to move as needed to maintain its location in this mode.
Unexpected movement of the boat may tend to unbalance you. Be cautious until you
have become familiar with the system dynamics.
The boat will slowly weathervane around the thruster and the bow will
generally come to rest pointed into the disturbing wind or current. It is
recommended that the boat be slowed or stopped prior to anchoring to minimize
overshoot.
When recalling a stored anchor site if you hold the buttons for more than
5 seconds you will over-write that existing memory location with the
boat’s present location, erasing it.
The system will calculate a beeline to the selected anchor site. Make
sure there are no obstructions between you and the anchor site prior to
recalling a location.

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4. ROUTE MODE
STORING (OR OVER WRITING) A ROUTE
From any mode, simultaneously press and hold either the
“M” or “T” button and one of the directional buttons for 5
seconds. The buttons can then be released and the system
will now be in the function corresponding to the button you
selected “M” or “T”. The system is now recording your route.
The unit will emit a 1 second “beep” to indicate that the route is being recorded.
You can now navigate along your desired course, switching
at will between manual and track modes. The recording
will terminate when you press “OFF” or “A”.
The unit will emit a 1 second “beep” to indicate
that the route has been successfully saved.
Should you wish to record an anchor site using the “M” or “T” memory these loca-
tions, simply hit “OFF” or “A” as soon as the path begins to record, thus recording a
path of zero length. A route can also be recorded at higher speeds with the system in
the stowed position. Simply use the route storing procedure above and the system
will accurately record your route at speeds of up to 60 knots. For safety, the thruster
and steering motors will be disabled as long as the system is in the stowed position.
RECALLING A STORED ROUTE:
From any mode, while holding down the “M” or “T” button,
press and release the appropriate directional button.
The unit will “beep a tune” (multiple consecutive beeps)
to indicate that the route has been successfully retrieved.
The unit will emit two “growls” and exit if the memory
location is empty or the boat is not within 1 mile of a point on the route.
The system will navigate directly to the nearest point on the route and then travel to
the most distant end, anchoring when it arrives. At any time while retracing a route
you can reverse the direction of travel by simply repeating the same recall command.
The unit will “beep a tune” to indicate that the boat is arriving at the end of the
recorded route.
When recalling a stored route if you hold the buttons too long you will
over-write that existing route memory location with the boat’s present
location, erasing it and begin recording a new route.
The system will calculate a beeline to the nearest
point on the route. Make sure there are no ob-
structions between you and the route prior to recalling it.
To place the system in Track Mode, press the button with the “T” symbol
on the wireless fob. The Track Mode automatically locks in the thruster’s
current heading and controls the steering to maintain a constant track,
acting as an “Autotrack” to compensate for wind or current disturbances.
The operator can adjust the speed or track heading by using the
directional controls on the wireless fob.
The unit will emit 1 “beep” to indicate that
it has entered Track Mode.
The unit will emit 2 “growls” and exit this
mode if there is no GPS fix.
ADJUSTING THE TRACK SPEED
The unit will maintain its previous speed if Track Mode is selected from
the Manual Mode. Otherwise, the unit will gradually ramp to 40% forward
speed to maintain the track. Pressing the Up-Arrow button increases the
thruster’s forward speed. The Down-Arrow button decreases the thruster’s
forward speed. Reverse operation is disabled in this mode.
The unit will “beep” when the thruster reaches
100% forward speed or when it is stopped.
ADJUSTING THE TRACK COURSE
The “Track Course” may be adjusted to steer the thruster to the desired new
heading by pressing the Left or Right Arrow buttons on the wireless fob.
3. TRACK MODE
In this mode, the steering is automatic, but the thrust level is user se-
lected. In extreme wind or current it is necessary for the user to select
a speed setting with adequate thrust to overcome the disturbances and remain
“on-track”.
The direction the boat is pointed when this mode is selected will
become the “Track Course”. The thruster will pull the bow of the boat
along this course in a straight line. The boat itself may seem to point somewhat
“off track” due to cross-wind or cross-track currents.

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APPENDIX A:
GENERAL INFORMATION
It is recommended that a trained technician install the GPS Anchor. Con-
tact Rhodan Marine Systems for a list of approved installers. Improper
installation can lead to poor performance, injury or even death. It is the respon-
sibility of the installer to verify proper installation.
DO NOT connect the HD GPS ANCHOR+ to a power source until installa-
tion is completed.
The HD GPS ANCHOR+ utilizes sensors which will likely be affected by
nearby magnetic fields. DO NOT install unit with or near anything that
produces a magnetic field (steel, magnets, etc.)
PHYSICAL INSTALLATION
ELECTRICAL INSTALLATION
PROPELLER INSTALLATION
ALIGNMENT CALIBRATION
COMPASS CALIBRATION (OPTIONAL)
APPENDIX B:
INSTALLATION CHECKLIST
1. With system in the stowed and locked position
place it so that the base rests on the deck,
approximately in the desired mounting position.
Rotate the system to the appropriate angle relative to
the boat. Generally speaking you will want to position
the head of the unit so that it is protected by the
rub-rail, but off to one side to free up as much space
on the foredeck as possible. Once positioned in this
manner, use your marking pen to draw a line on the deck along one side of the quick
release bracket. This will provide a reference to position the motor at the correct
angle in the next phase.
2. Deploy the system so that it is locked in the operational position.
The following process is of moderate difficulty. Should you not feel
comfortable performing the steps listed below, we recommend that you
contact an authorized installer to complete this process for you.
The system can be quite awkward to handle at this stage, so it may be
desirable to have a second person assist you with this step.
TOOLS REQUIRED
• 1/4”Drill Bit (included) and Drill • Marking Pen or Pencil
• #3 Phillips Screwdriver • Level (optional)
Prior to beginning the installation process, give some consideration to the desired
mounting location. Most commonly these systems are mounted on the bow at a
slight angle to the keel so that the shaft of the motor does not obstruct the foredeck
while stowed. The following instructions are based on that approach. Should your
particular installation differ, please feel free to contact Rhodan Marine for additional
guidance or recommendations.
There are two types of quick release brackets provided on the HD GPS anchor.
Determine which bracket your system has and follow the appropriate instruction set
for that model.
APPENDIX C:
PHYSICAL INSTALLATION

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24” CLEARANCE
48”
3. Align the quick
release bracket with
the mark on the deck
from the previous step.
Shift the motor along
that line until there is
approximately 1” of
clearance between the
shaft of the system and
the rub-rail of the boat. (In
bow mount installations
this is generally the critical
clearance point. Refer to
the table below for other
recommended clearances.)
Once in position, use the
marking pen to draw a line
on the deck around the
back of the quick release
bracket.
4A (Black Aluminum Mounts). Remove the system
from the boat and detach the lower half of the quick
release bracket. Place the lower half of the quick
release bracket on the deck and align it with the
marks made in the previous steps. Place your
marking pen through the holes in the base
and draw a circle to depict the location for
the mounting holes. Depending on the shape
of your boat it may not be possible to use
the outer most holes, however it is desirable
to choose the four mounting holes that are
spaced as far apart as possible to provide the
most stable installation.
4B (White Composite Mounts). Remove the
system from the boat. Place the included
mounting template on the deck and align it
with the marks made in the previous steps.
Use your pen to mark the locations of the
mounting holes on the deck.
5. Once the holes are marked, verify that
there are no wires or other components
beneath the mounting hole locations that might
be damaged. Drill a 1/4” hole at each of the four locations marked.
6. Place the lower half of the quick release
bracket on the deck and align with the holes
drilled in the previous step. Insert the four
¼”-20x3” mounting screws from the included
hardware kit (note: it is helpful to apply a
small amount of lubricant to the threads of the
screws prior to insertion). At this point check
to see that the base is sitting flat on the deck.
If there are any gaps, or if you wish to level the
base to the boat (optional), install washers or
other spacers (not provided) as needed.
7. Once leveled, install fender washer and lock
nut onto the mounting screw and tighten to a
torque of 5 ft-lbs.
This completes the physical installation. Refer
to the following steps for electrical installation
and calibration.

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Batteries produce and contain harmful materials that may result in personal
injury and/or property damage if improperly used. Refer to your battery manu-
facturer’s guidelines for charging, discharging, storage and care instructions.
Be sure all switches/circuit breakers are in the OFF position and fuses are
removed when making battery connections. Failure to do so may result in
personal injury and/or property damage.
Verify that all conductors and connectors are rated for at least 50 Amperes and
36VDC, 24VDC or 12VDC (depending on model). All circuits MUST be protected
using a 50A fuse or circuit breaker in series with the positive lead. Failure to do so
may result in personal injury and/or property damage.
DO NOT connect the trolling motor batteries to any other device, including the
main outboard engine.
The HD GPS ANCHOR+ requires one 12V battery for the 12V units, two 12V battery in
series for the 24V units and three12V battery in series for the 36V units.
LUG (BASIC) INSTALLATION
Your GPS Anchor system is provided with a factory installed 6’ power cord with 5/16”
ring terminals for connection to breaker/battery terminals or power lugs. Please
note that it is mandatory to install a fuse or breaker protection for the system circuit.
This protection should be rated for 50A, 36V, 24V or 12V (depending on model). If
you boat is already wired with a 36V, 24V or 12V (depending on model) power system
with appropriate circuit protection, simply connect the white wire to the positive lug
and the black wire to the negative lug. Should your boat use a trolling motor plug or
not have a 36V, 24V or 12V (depending on model) trolling motor circuit, please refer to
additional instructions below or contact an approved system installer.
PLUG INSTALLATION
If your boat is already wired with a 36V, 24V or 12V (depending on model) trolling mo-
tor battery system it may be necessary to install a plug on the end of the main power
conductor in order to work with your boat.
There are many different plugs on the market, but generally it is possible to obtain the
appropriate plug from your local boating supply store. Please make sure that the plug
you install is rated for 50A, 36V, 24V or 12V (depending on model). Should you have
difficulty locating the appropriate plug, please contact Rhodan Marine Systems, and
we will do our best to assist you.
APPENDIX D:
ELECTRICAL INSTALLATION
The following process is of moderate difficulty. Should you not feel comfort-
able performing the steps listed below, we recommend that you contact an
authorized installer to complete this process for you.
Once the appropriate plug is obtained, it will need to be installed on the power cord.
Depending on the location of the socket relative to your system it may be appropriate
to trim the main power conductor to a shorter length. If shortening the power cable,
be sure to leave adequate length to complete the connection to the plug and allow
for the plug to be inserted with a small amount of slack remaining. Generally you
should have 6” to 12” of slack in the cable when plugged in.
Using a volt meter, determine the positive 36V, 24V or 12V (depending on model)
and ground (negative) terminals on the socket and plug. Following the instructions
provided with the plug, connect the white power wire to the positive 36V, 24V or 12V
(depending on model) terminal and the black power wire to the negative terminal.
When complete, reinstall any fuses or turn on your circuit breaker and insert the plug
into the socket. At this point you should hear the system beep indicating that it is
getting power.
COMPLETE ELECTRICAL INSTALLATION
If your boat is not already equipped with a 36V, 24V or 12V (depending on model) bat-
tery power system it will be necessary to install one.
36 VOLT TROLLING MOTOR BATTERY SYSTEM
A 36 volt trolling motor battery system
will generally consist of three, 12 volt
deep cycle batteries, #6 (or larger for
long runs) power conductors, a 36V, 50A
rated circuit breaker, a 36V, 50A rated
receptacle, and optionally a permanently
installed 36V battery charger as per the
following wiring schematic.
24 VOLT TROLLING MOTOR BATTERY SYSTEM
A 24 volt trolling motor battery system will generally
consist of two, 12 volt deep cycle batteries, #6 (or
larger for long runs) power conductors, a 24V, 50A
rated circuit breaker, a 24V, 50A rated receptacle, and
optionally a permanently installed 24V battery charger
as per the following wiring schematic.
12 VOLT TROLLING MOTOR BATTERY SYSTEM
A 12 volt trolling motor battery system will generally consist of
a 12 volt deep cycle battery, #6 (or larger for long runs) power
conductors, a 12V, 50A rated circuit breaker, a 12V, 50A rated
receptacle, and optionally a permanently installed 12V battery
charger as per the following wiring schematic.
If you plan to attempt a complete installation yourself, please
feel free to contact Rhodan Marine Systems for additional
guidance and information.
This process is of moderate difficulty and should only be attempted by
experienced technicians. We recommend that you contact an authorized
installer to complete this process for you.

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APPENDIX E:
PROPELLER INSTALLATION
INCLUDED
• Three Bladed Propeller • Shear Pin
• Propeller Nut • Propeller Washer
Always verify that the trolling motor power is disconnected before install-
ing or cleaning the propeller. Failure to do so may result in personal injury.
Never strike any part of the motor with a hammer. This may cause damage
to the motor armature, which is not covered by the warranty.
INSTALLING THE PROPELLER
1. Install the shear pin in the hole near the end of the
propeller shaft.
2. Slide the propeller onto the propeller shaft, taking
care to ensure that it is properly engaged onto the
shear pin.
3. Install the washer and propeller nut on the
propeller shaft.
4. Tighten the propeller nut using a 9/16”
socket to 5 ft-lbs.
5. Be sure to periodically check the prop nut to
ensure it is tight.
APPENDIX F:
CALIBRATIONS
CENTERING CALIBRATION
Note: This procedure is required and is normally only completed once at the time of
the installation. It should also be performed every time the system is transferred to
another boat or after a compass calibration.
1. Power up the system and deploy it using the depth collar to adjust the height so
that the motor can steer without any obstructions.
2. Press the ‘M’ button to enter Manual Mode. Please note that the system is in an
operational mode: Stay a safe distance away from the propeller to avoid injury.
3. Using the left and right arrows (or manually rotating the head of the thruster),
steer the unit so that it is aligned with the keel of the boat (pointing straight ahead
with the propeller facing the stern of the boat).
4. Press and hold the up and down arrow simultaneously for 5 seconds until the
system beeps.
5. The system will return to Manual Mode.
6. To verify that the system has been “centered”, press the off button. The system
will automatically steer to the centered position.
The accuracy of the steering calibration will impact the system’s performance. Care
must be taken to ensure that the thruster is aligned as accurately as possible (ideally
within 1 or 2 degrees) during this calibration.
COMPASS AUTO-CALIBRATION (Recommended)
Note: Performing a compass calibration procedure is recommended as part of the
installation process to improve the accuracy of the GPS Anchor. It will account
for magnetic errors that can occur if the system is mounted close to other metallic
objects (i.e. cleats, steel fasteners, etc.) which may cause the system functions to
misbehave.
1. The boat must be in the water to perform this calibration. Make sure that there are no
obstructions nearby (docks, pilings, other boats, etc.) and that the water is fairly calm.
2. Power up the system and deploy it using the depth collar to adjust the height so
that the motor can steer without any obstructions.
3. Press the ‘M’ button to enter Manual Mode. Please note that the system is in an
operational mode: Stay a safe distance away from the propeller to avoid injury.

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APPENDIX G:
FOB FEATURES
REPLACING A FOB BATTERY
1. Using a #1 phillips screwdriver, remove the two screws on the back of the fob.
2. Separate the fob sections
3. Remove the rubber membrane and the circuit board from the back half of the fob shell.
4. Slide the battery out of its holder on the back of the circuit board and replace with
a new CR2032 battery. Be sure to position the battery with the Positive side away
from the board.
5. Reinstall the circuit board in the back half of the fob shell, taking care to make
sure it is properly positioned in the shell.
6. Place the rubber membrane over the lip on the back half of the fob shell and press
into place.
7. Place the front half of the fob shell over the rubber membrane and press into
place. Verify that all buttons are properly positioned within their opening and func-
tion correctly.
8. Reinstall the two screws into the fob shell, taking care not to over-tighten the screws.
PROGRAMMING A NEW WIRELESS CONTROL FOB
1. Power up the unit in the stowed position and wait for the two power up beeps.
2. Deploy, stow and re-deploy the unit prior to pressing any fob buttons. System will
emit 2 beeps each time when it recognizes the new stow/deployed position.
3. The unit will begin “beeping” indicating that it is ready to learn new wireless controls.
4. Hold the “OFF” button until the system emits as long beep and then stops beeping.
5. The new fob had now been learned by your system and is ready to be used.
The batteries in the wireless FOB should be capable of lasting a full fishing
season or longer under normal usage conditions. If your system is powered
up yet fails to respond to a FOB, or if you noticed decreased wireless range,
try replacing the battery.
Warning, do not attempt to stow the unit until it has stopped beeping.
4. Using the left and right arrow buttons, steer the unit so that it is pointing to either
side (roughly 90° to the keel).
5. While holding down on the Manual ‘M’ button, press and hold on the Anchor ‘A’
button for 5 seconds until the system beeps.
6. The motor will now automatically steer to the right and ramp up the thrust caus-
ing the boat to begin rotating. The boat will complete (2) full rotations and then the
system will beep to indicate that the calibration is complete.
7. The system will return to Manual Mode.
8. It is required that the Centering Calibration is now performed.
COMPASS MANUAL CALIBRATION
1. The boat must be in the water to perform this calibration. Make sure there are
no obstructions nearby (docks, pilings, other boats, etc.) and that the water is fairly
calm.
2. Power up the system and deploy it using the depth collar to adjust the height so the
motor can steer without any obstructions.
3. Press the Manual ‘M’ button to enter Manual mode. Please note the system is in an
operational mode. Stay a safe distance away from the propeller to avoid injury.
4. Using the left and right arrow buttons steer the unit so that it is aligned with the
keel of the boat (pointing straight ahead with the propeller facing the stern of the
boat.)
5. Using another means of propulsion (main engine, paddle, etc.) begin to continuous-
ly rotate the boat in a tight circle at a rate of one full revolution every 20-30 seconds.
6. Press and hold the Manual ‘M’ and Track ‘T’ buttons down simultaneously for 5
seconds until the system beeps.
7. After the system has beeped or the boat has completed up to 2 revolutions the
calibration is complete.
8. The system will return to Manual Mode. The rotation may now be stopped.
9. A centering calibration may also need to be performed again to center the motor
with the keel depending on the new compass calibration.

www.rhodanmarine.comRhodan Marine Systems • 8297 Blaikie Court • Sarasota, Florida 34240 • Phone [phone] • Fax [phone] CUSTOMER SERVICE: 1-888-434-7726 2322
APPENDIX H:
MAINTENANCE & STORAGE
STATUS LIGHTS
Your HD GPS ANCHOR is equipped with 3 status indicator lights to confirm normal
operation or assist in troubleshooting. The table below summarizes the meaning of
the various lights.
GPS STATUS LIGHT (LEFT LED)
• Green: DGPS Lock (Best Performance)
• Amber: GPS Lock (GPS modes will function, but signal is not optimal, verify that the
system has a clear sky view)
• Flashing Amber: No GPS Lock (GPS signal lost or not found, GPS modes will not
function, verify that system has a clear sky view, if light remains flashing for more
than 5 minutes cycle power to system. If problem persists, contact Rhodan Marine)
• Red or Flashing Red: GPS Fault has been detected (GPS modes will not function).
Cycle power on system. If problem persists, contact Rhodan Marine.
BATTERY STATUS LIGHT (CENTER LED)
• Green: Battery Voltage is Good (>12.0v per battery)
• Amber: Battery Voltage is at low end of normal range (11.5V to 12.0V per battery)
Battery may be below 50% capacity:
• If light remains amber after charging there may be an
issue with battery/wiring/or charging system
If light turns amber at high thrust levels:
• Propeller may be fowled
• There may be an issue with the battery or wiring on the boat.
• Red: Battery Voltage is too low (<11.5v per battery)
Battery may be fully discharged (less than 20% capacity remaining):
• If light remains red after charging there may be
an issue with battery/wiring/or charging system
If light turns red at high thrust levels:
• Propeller may be fowled
• There may be an issue with the battery or wiring on the boat.
SYSTEM STATUS LIGHT (RIGHT LED)
• Green: System is operating Normally
• Amber: System is receiving a command from the wireless fob. It is normal for this
light to change to amber any time a button is pressed on the remote. This can be
used to verify proper communication from the fob. Light should return to green if
fob buttons are released.
• Red or Flashing Red: System has detected a fault
condition. Cycle power to system and allow about 30
seconds for it to reboot. If problem persists, please
contact Rhodan Marine.
ERASING ALL FOBS FROM MEMORY
1. Power the unit up in the stowed position
2. Deploy, stow and re-deploy the unit prior to pressing any fob buttons.
3. The unit will begin “beeping” indicating that it is ready to learn new wireless
controls from the step above. System will emit 2 beeps each time when it recognizes
the new stow/deployed position.
4. Within 20 seconds (while the system is still beeping) stow and deploy the system
once more.
5. The system will sound a long beep indicating that all fobs have been erased from
memory.
If this step is being performed because of concerns about a defective fob, it
will be necessary to remove the batteries from all fobs in question prior to
completing this process.
Trolling motor must be disconnected from power source (ie. trolling motor
plug or circuit breaker) when charging or stored at end of day. Failure to
power down can result in damage that is not covered under warranty.
It is recommended that the following steps be taken after each use.
Adhering to these recommendations can greatly increase the life of the
unit. Failure to properly maintain the unit may void the warranty and can result
in system damage, personal injury, and property damage.
• Rinse off any salt water deposits and wipe the motor down with a clean soft cloth. Do
not use a pressure washer to clean the unit.
• Check that the propeller is clear of any fishing line or weeds.
• Use the prop nut tool to ensure the prop nut is properly secured.
• Lubricate all moving parts with a non-aerosol lubricant.
• Clean battery terminals regularly and check for loose terminal nuts.
• Store in a well-ventilated, dry area
• Do not leave the motor outside in the elements, especially in cold winter and/or salt
water environments. Long exposure to sub-zero temperature will reduce the strength
of the permanent magnets of the motor and result in reduced thrust.
• Never use chemicals (alcohol, solvents, and acids) on any of the system components.
• Use a Vinyl UV protector periodically on the power
cables to avoid excessive sun damage.
• Periodically check for loose connections
and/or excessive corrosion.

8297 Blaikie Court
Sarasota, FL 34240
Ph. 941-706-4578
Fax [phone]
www.rhodanmarine.com
GPS Guided Trolling Motor
RHODAN MARINE SYSTEMS
24 MONTH WARRANTY
All HD GPS ANCHOR+ Trolling motors produced by
Rhodan Marine Systems that have been under normal and
proper usage are warranted to be free of manufacturing
defects for a period of 24 months after date of purchase.
Proof of purchase may be necessary.
CUSTOMER SERVICE
Have your unit serial number ready and call:
1-888-HDGPSANCHOR (1-888-434-7726)
©2017, Rhodan Marine Systems. All rights reserved. Rev. 102817