Digital Speedometer with Analog Appearance
Digital displays for
Depth in Feet, Meter, or Fathoms
Shallow or Deep Water Alarms
Alarms are Audible and Visual
Programmable Keel Offset
Trip Log
Note: For wiring
diagram for the
Four wire
Connector Socket
see HN0353.
2 wire
Connector
Socket
4 wire
Connector
Socket
2 wire
Connector
Note: For wiring
diagram for the
Two wire Connector
Socket see HN0357.
Use with:
SystemCheck® Commander™
Speedometer with Depth Sounder
Installation:
CAUTION: Disconnect the battery during
installation. Tighten nuts on the
backclamp only slightly more than you
can tighten with your fingers. Six inch-pounds of torque are sufficient. Overtightening could result in damage to the
instrument and may void your warranty.
Mounting
1. Cut a 3-3/8” diameter hole in the dash
and mount the gauge with the backclamp
supplied.
The butt connectors have a heat activated
waterproofing. Once the butt connections
have been crimped, slowly apply heat with
a heat gun until you see sealant coming
out of the connector ends. It is
recommended to wrap the connections
together with electrical tape for further
protection.
Four Wire Connector Socket
Connections for Speed input, Ignition and
Ground. Follow the wiring diagram at the
end of this manual for wiring connections.
(See Diagram HN0353, Figure 5, page 9).
Two Wire Connector Socket
Follow the wiring diagram at the end of
this manual for wiring connections. (See
Diagram HN0357, Figure 4, page 8).
Page 1
Operation
Speedometer
The speedometer is a digital instrument
with the appearance of an analog
instrument. The speedometer is designed
to be operated from a “paddle wheel”
sensor. A microprocessor controlled
stepper motor moves the pointer to display
boat speed using a linear dial.
The microprocessor and stepper motor
provide excellent accuracy. Variations in
the operation of the “paddle wheel” sensor
are however fairly common. These
variations may be caused by the mounting
location of the “paddle wheel” on the hull,
which affects water flow characteristics, or
turbulence and air bubbles in the area of
the “paddle wheel”. Therefore, calibration
of the speedometer may be required and is
easily accomplished by using the Trip Log
display or the pointer.
display.
button causes the display to change to the
“settings” sub menus (see Figure 2, page 6).
When the settings menus have been
selected, pressing the “Mode” button for a
short period of time causes the display to
cycle through the setting options. Within
each setting selection, pressing the
“Down” and “Up” buttons causes the
affected setting to change. The
microprocessor will automatically record
the new settings as you adjust them.
Pressing and holding the “Mode”
Description
The SystemCheck® Commander™
Speedometer has three push buttons;
M
Down
Button
The “Mode” button is used to change the
function of the LCD display and to access
sub menus and adjustable settings. The
“Down” and “Up” buttons are used to
modify the settings.
In normal operation mode, pressing the
“Mode” button for a short period of time
causes the display to cycle between the
Depth Sounder display and the Trip Log
Page 2
Mode
Button
Up
Button
When in a setting menu, pressing and
holding the “Mode” button returns to the
main function.
Trip Log
The Trip Log is similar to the trip
odometer in an automobile. The distance
traveled, as recorded by the speedometer
“paddle wheel”, is displayed.
The Trip Log may be reset to zero, the
units of measure changed, or the
calibration adjusted using the sub menus.
Pressing and holding the “Mode” button
while the Trip Log is displayed will
change the display to the “settings” menu
(see Figure 2, page 6).
Trip Log “Settings” Menu
There are three items in the Trip Log
“Settings” Menu: Reset, Units, and
Calibration. Briefly pressing the “Mode”
button cycles through the menu items.
The microprocessor will automatically
record the new settings as you adjust
them.
Reset
miles (NM).
Miles
Nautical Miles
Calibration
This menu item is used to simultaneously
adjust the calibration of the Speedometer
and the Trip Log. Two methods of
calibration are possible. These methods
will discussed in the Calibration Section.
Depth Sounder
The Depth Sounder displays the depth of
the water under the boat.
Pressing the “Up” and “Down” button
resets the Trip Log to zero.
Units
Pressing the “Up” or “Down” button
cycles the units of measurement for the
Trip Log between miles (MI) and nautical
The depth can be displayed in feet, meters,
or fathoms. Audible and visual alarms can
be set to warn of shallow or deep water
conditions. A “keel offset” setting allows
the operator to adjust for the difference in
the location of the Depth Sounder
transducer compared to the deepest part of
the boat’s hull. The various settings are
accessed by pressing and holding the
“Mode” button while the Depth Sounder
is displayed (see Figure 2, page 6).
Page 3
Depth Sounder “Settings” Menu
There are four items in the Depth Sounder
“Settings” Menu: Shallow Alarm, Deep
Alarm, Keel Offset, and Units. Briefly
pressing the “Mode” button cycles
through the menu items.
The microprocessor will automatically
record the new settings as you adjust
them.
Shallow Alarm
Pressing the “Up” or “Down” button
changes the setting for the Shallow Alarm.
Setting the Deep Alarm to zero turns off
the alarm.
Keel Offset
Pressing the “Up” or “Down” button
changes the setting for the Keel Offset.
Negative numbers indicate that the Depth
Sounder transducer is located ABOVE the
deepest part of the hull (typical). Allow
for worst case boat loading when
adjusting the Keel Offset as this setting
affects the Shallow Alarm.
Setting the Shallow Alarm to zero turns
off the alarm. To have this alarm indicate
the depth of water under the deepest part
of the hull, the Keel Offset must be
properly set.
Deep Alarm
Pressing the “Up” or “Down” button
changes the setting for the Deep Alarm.
Page 4
Water line
Transducer
Lowest part of boat.
= -Keel offset
Units
Pressing the “Up” or “Down” button
cycles the units of measurement for the
Depth Sounder between
feet (FT),
meters (m),
and fathoms (FA).
Loss of Signal
When the Commander™ looses signal
from
the transducer, the LCD display will flash
the following;
Quickly press the “Mode” button three (3)
times to select and enter the Calibrate
“settings menu”.
There are two methods of calibration;
1) A GPS or radar gun can be used to
obtain a fixed speed. While holding the
boat at the selected speed press the
“Up” or “Down” buttons to adjust the
speedometer pointer reading to match the
GPS or radar gun indicated speed.
Calibration
Speedometer / Distance Traveled
Calibration is done in the Trip Log
“settings menu”. (See Figure 2)
Calibrate
Press the “Mode” button to display the
Trip Log.
2) The Trip Log can be set to zero and
then a course of known distance run, such
as between two buoys or by using a GPS.
At the end of the run access the
Calibration menu item.
Press the “Up” or “Down” buttons to
adjust the recorded Trip Log distance to
match the known distance. This will
calibrate both Trip Log and the
Speedometer.
Page 5
Quick Reference Guide
Speedometer LCD Display Modes
-
-Settings Menus-
Figure 2
Setup Mode
The speedometer full scale deflection
setting can be changed using the Setup
Mode (see Figure 1). Use this option only
if you have reason to believe that your
setting is wrong. Setting an incorrect
value in this menu can result in extremely
inaccurate performance of the
speedometer. To access the Setup Mode,
press and hold both the “Up” and
“Down” buttons while turning on the
instrument.
-Settings Menus-
The display will show “*SETUP*”.
Briefly pressing the “Mode” button will
change the display to the setting menu.
Page 6
The “Up” and “Down” buttons are used to
modify the setting.
Screen shows:
“
*
SET UP*”
U
The microprocessor will automatically
record the new setting as you modify it.
Pressing and holding the “Mode” button
sets the instrument to normal operation.
Speedometer Full Scale Selection
Refer to Figure 3 (below) for an
explanation of each of the speedometer
Quick Reference Guide
Set-Up Mode
full scale selections.
This is normally a factory setting that
needs no adjustment. The setting adjusts
the “full scale” operating range of the
speedometer to match the dial on the
instrument. Using the “Up” and “Down”
buttons,
adjust the setting to match the maximum
reading on the speedometer dial: 50 or 70
MPH.
Figure 3
ENTER SETUP MODE:
Press both the “Up” and “Down” buttons while turning on instrument
To exit the setup mode, press and hold the “
SETUP start scre en,
shows that setup m ode
has been entered .
Flashes “S SCALE” and
then shows current
speedometer scale
selection.
Mode” Button
Screen shows:
“50”, or “70” Default = 70
se the “Up” or “Down” button to adjust
speedometer full scale reading to match dial.
Page 7
Figure 4
Harness HN0353
Four Wire Connector
To Co m mander™
Small Plug(CN0082)
Pin A Purple +12 Ignition Power
Pin B Purple +12 Ignition Power
Pin C Black Ground
Pin D White/Blue Speedometer Input
Shrink Tubing
or Wrap
ECR 1903 12/21/01
Page 8
Purple
(Ignition)
(Ground)
Black
White
w/ Blue Stripe
(Paddle Wheel Signal)
(Paddle Wheel +12 vDc)
(Paddle Wheel Ground)
Green
Red
Bare
Paddle Wheel Sender
Blue
(Depth
Sounder
Signal)
Black
(Depth
Sounder
Ground)
To Co m mander™
Small Plug(CN0082)
Figure 5
Harness HN0357
Two Wire Connector
Pin A Blue Depth Sounder Signal
Pin B Black Depth Sounder Ground
Pin C Not Used
Pin D Not Used
ECR 1903 12/21/01
Blue
Blue
(Depth
Sounder
Signal)
Black
(Ground)
Black
(Depth
Sounder
Ground)
Shrink Tubing
or Wrap
Page 9
Notes:
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