The B&G Network range of instruments is designed to be
used as individual units or connected together to form an
integrated navigational system. A single network cable is
used to carry data and power between units. The latest
technology and screened cables throughout the Network
System ensure the ultimate protection from interference
between units and other systems. All Network instruments
can be linked to Network PILOT, Network CHART, Network
GPS or Network LORAN receivers or via NMEA 0183 (v1.5)
to other navigational equipment.
The Network QUAD unit measures and displays Speed,
Depth, Log, Timer and Sea Temperature information on a
large back-lit Liquid Crystal Display (LCD). The LCD is
divided into three display areas. The top area permanently
shows speed information, the centre area is selectable and
shows Log, timer, sea temperature and depth alarm
information, and the bottom area permanently shows depth
information.
The five keys allow selection of the displayed information
and setting of the units mode, calibration factors and
operating parameters.
It can operate as the main Network QUAD unit either alone
or as part of an Integrated Network Instrument System
taking inputs directly from Speed and Depth Sensors which
plug into the sockets at the rear of the display, or as a
repeater (by selecting repeater mode) of information
received via the two Network cable tails.
The Network QUAD REPEATER (not a Network QUAD in
repeater mode) does not have Speed and Depth Sensor
sockets, so it only receives data via the system network. It
offers identical facilities to a Network QUAD main unit but
can only ever be used as a repeater.
610-HB-0503-05
2
INTRODUCTION TO NETWORK QUAD CONT'D
The Network QUAD unit has three adjustable alarms:
1. Shallow water alarm
2. Deep water alarm
3. Anchor alarm
An internal alarm buzzer will sound when an alarm condition
is met and the display will flash. The alarm is broadcast to
all other Network Instruments in an integrated system, they
will also sound their alarms and flash their displays (except
Network WIND and Network TACK).
The Network QUAD unit is NOT able to transmit NMEA
0183 (v1.5), however, the Network QUAD REPEATER unit
is able to transmit NMEA data via the system network
cables to other Network units and connect to an NMEA
device e.g. a position fixer, with a special NMEA output
cable.
NETWORK QUAD DISPLAY UNIT
IMPORTANT NOTE
Your Network QUAD unit must be set-up and calibrated
correctly before it is used as part of a navigational system.
610-HB-0503-05
3
EXAMPLES SYSTEMS USING NETWORK QUAD
r
r
Only one Network QUAD unit should have speed and depth
sensors connected to it and set to transducer mode. Up to
three more Network QUAD (set to repeater mode) or QUAD
REPEATER units can be connected on to the system
network.
QUADQUADQUADQUAD
Main unit
Repeater ModeRepeater unitRepeater Mode
QUADWINDQUADPILOT
DepthSpeed
Sensor
Sensor
When in repeater mode, if the data is not
being received from the system network, the
display will show OFF when a key is
pressed.
610-HB-0503-05
SPEED
DEPTH
Depth
Senso
Speed
Senso
If the Network QUAD unit losses valid depth data, due either
the actual depth being outside the working range, or to
extreme turbulence in the water the LCD will show 3
"floating" bars. This shows that the unit is attempting to
calculate the depth and is still functioning.
4
SELECTING THE DISPLAY MODE
The Network QUAD unit has two operating modes. The
correct mode must be selected for your Network system to
operate properly.
tYPEt
Transducer mode, the unit uses and displays
speed and depth data from sensors connected
directly into the display unit.
tYPEr
Repeater mode, the unit operates as a repeater
using data from the system network.
Press
TIMER
key
to display stored
log.
610-HB-0503-05
Press
SETUP
to display the
current mode.
key
Press
ENTER
key
if the mode needs
to be changed.
Use S or T to
change mode.
Press
ENTER
to
store the new
mode in memory.
Press
TIMER
complete the
change.
to
5
USING THE SPEED KEY
Boat speed information is permanently displayed in the top
area of the LCD.
Press the
SPEED
key to cycle through the following
options:
SPEED
Current boat speed in Knots, can also be
displayed in MPH.
AVERAGE
SPEED
Average boat speed since the last reset of
the trip log.
MAX Maximum boat speed since the last reset
SPEED
of the trip log.
610-HB-0503-05
6
CALIBRATION AND OPERATING PARAMETERS
When current boat speed is displayed, press the
SETUP
to cycle through the following options:
DAMPING
The response time of the display to
changes in boat speed.
SPEED
KNOT or MPH. This setting also changes the log
The boat speed can be displayed in Knots
units to Nautical or Statute Miles.
CAL
LOG
Manual boat speed and log calibration.
Manual boat speed and log calibration.
CAL
AUTO CAL
Automatic boat speed and log
calibration.
Reset Dead Reckoned Distance.
dr
When in
•
The
•
The
•
The
SETUP
SPEED
LOG
LIGHTS
mode:
key becomes the UP key S
key becomes the DOWN key T
key becomes the
ENTER
key
The procedures for using the SETUP options are on the
following pages.
key
610-HB-0503-05
7
SETTING THE DISPLAY DAMPING
Damping allows the response time of the displayed speed
value to be slowed down if it is to jumpy in rough weather, or
to sped it up when the conditions are calm. The damping
works by averaging the values over a set time period; the
longer the time period the smoother the readings, however
the longer it takes to see a change. Similarly the shorter it is
the jumpier the readings, but the faster the response.
The Network QUAD unit has a factory set value of 5, this can
be adjusted in the range 1 to 64, each step is approximately
one second.
Press
to display current
boat speed.
610-HB-0503-05
SPEED
key
Press
once to display
the damping
value.
SETUP
key
Press
if the value is to
be changed.
ENTER
key
Use S or T to
change the value.
Press
to memorise the
change.
ENTER
key
Press
to display current
boat speed.
SPEED
key
8
SETTING THE SPEED AND LOG UNITS
The Network QUAD can be set to display boat speed in
Knots or MPH.
If boat speed is in Knots then log is in Nautical Miles.
If boat speed is in MPH then log is in Statute Miles.
Press
to display current
boat speed.
SPEED
key
Press
twice. The speed
digits will blank.
SETUP
key
Press
if the units are to
be changed.
ENTER
key
Use S or T to
change the units.
Press
to memorise the
change.
ENTER
key
Press
to display current
boat speed.
SPEED
key
610-HB-0503-05
9
SPEED AND LOG CALIBRATION
Before Network QUAD is used for navigation the boat speed
and log have to be calibrated to ensure accuracy for your
installation and the boats hull characteristics.
Three methods are available with the Network QUAD unit,
two manual adjustments and one automatic:
MANUAL CALIBRATION
1.
2.
AUTOMATIC CALIBRATION
3.
Use the one of the methods overleaf to calibrate your
instrument. It is recommended that
this method will ensure the most accurate calibration of your
Network QUAD unit.
The displayed boat speed value is corrected
CAL
manually to read a known measured speed.
The units calibration figure (Hz/Knot) is
LOG
manually adjusted to correct log and speed
CAL
inaccuracy.
AUTO CAL
corrects the boat speed and log.
The unit automatically calibrates and
AUTO CAL
is used as
610-HB-0503-05
10
METHOD 1. - MANUAL CALIBRATION - CAL
This procedure requires a reference boat speed with which to
compare the Network QUAD units displayed boat speed. For
example, another boat with an accurate calibrated log, or if
the top speed of the boat is known this value can be entered
during a sea trial to correct the
displayed value.
NOTE:
accuracy of the reference boat speed.
The example below shows a displayed boat speed of 5.2
knots, the boat speed is known to be 6.0 knots. The
displayed value is adjusted to read 6.0 knots.
The accuracy of this method is dependent upon the
IMPORTANT NOTE:
This method of calibration must not be
carried out at boat speeds of LESS THAN 3 KNOTS as
inaccurate values can be entered into the units memory. If
the speed and log are not functioning correctly then enter a
calibration value of 5.3 to 6.2 and then re-enter the correct
calibration value as described below.
Press
SPEED
key
to display current
boat speed.
Press
SETUP
three times to
display
CAL
key
.
610-HB-0503-05
Press
ENTER
key
to adjust the
displayed value.
Use S or T to
change the value.
Press
ENTER
to
store the new
value in memory.
Press
SPEED
key
to complete the
change.
11
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