ST30 Bidata Operation and Installation Handbook

D681

Autohelm and SeaTalk are registered Trade Marks of Nautech Limited

Autohelms policy of continuous improvement and updating may change product specifications without prior notice

Copyright Nautech 1992

ST30 Bidata Operation and Installation Handbook

Package Contents

The following items are included in the ST30 Bidata package:

1.ST30 Bidata instrument

2.Fixing studs (2 off)

3.Thumb nuts (2 off)

4.Mounting template

5.1m power cable

6.Depth transducer (through hull) with 10m cable and 1/8in spade connectors

7.Speed transducer (through hull) with 10m cable and 1/8in spade connectors (0 to 32 knots)

8.Instrument cover

9.Operation and installation handbook

10.High speed paddle wheel (2 to 45 knots)

11.Daisy-chain cable

11

8

TM

D680

Introduction

Designed for above or below deck installation, the ST30 Bidata can be used as a stand-alone master instrument or set to repeat depth and speed information from the SeaTalk bus.

The ST30 Bidata will display the following information:

???Water depth

???Shallow water alarm

???Deep water alarm

???Keel/Waterline offset

???Minimum depth

???Boat speed

???Log

???Trip

???Maximum speed

???Average boat speed

???Illumination level

TM

D681

1.3 Power supply (Stand-alone operation)

Caution: The ST30 Bidata must be connected to a 12V supply only.

D683

For stand-alone operation, use the standard 1m cable supplied.

1.Connect the moulded power plug to either 'SeaTalk' connection on the rear of the instrument. Run the free end back to the vessel's distribution panel.

2.Cut the cable to length and connect the red wire to 12V and the screen to 0V. Protect the circuit with a 5A fuse/circuit breaker.

1.4Power supply (SeaTalk system)

The ST30 Bidata can be connected to an existing SeaTalk system using a

Standard SeaTalk Extension or Interface Cable.

Depth

GRP, Steel, Aluminium Standard through hull

GRP, Steel, Aluminium Retractable depth (Z120)

In hullIn hull puck (Z117)

Speed

Speed and depth

Caution: Plastic through hull transducers must not be used on vessels with wooden hulls.

Note: The ST30 Speed transducers are fitted with standard paddlewheels designed for speeds up to 32 knots. For vessels that will exceed this speed, please refer to section 2.3 which contains instructions on how to fit the high speed paddlewheel (supplied).

2.3 Paddlewheel replacement

If the high speed paddlewheel (supplied) is to be fitted, or the existing paddlewheel to be replaced, proceed as follows:

1.Remove the retaining rings (1) and pin (6) from the speed transducer (3).

2.Withdraw the speed transducer (3) from the through hull fitting (4).

3.If replacing a worn paddlewheel and if the vessel is still in the water, replace the speed transducer (3) with the plug (5).

4.Remove the pin (6) that retains the paddlewheel (7) in the speed transducer (3). This is a simple press fit into the transducer housing.

5.Fit the high speed/replacement paddlewheel (7) to the speed transducer (3) and retain with the pin (6).

Note: The paddlewheel is correctly orientated when the working (flat) surfaces of each paddle are facing forwards.

6.Assemble the speed transducer (3) to the through hull fitting (4) and secure with the retaining rings (1) and pin (2).

8

2

1

4

D587a

2.4 Installation

The depth and speed transducers are supplied with detailed installation and maintenance instructions. These instructions, together with following notes, should be read thoroughly before attempting to install the transducers.

Speed transducer (through hull)

For accurate speed readings, locate the speed transducer in the shaded ''clear flow' areas as shown.

D587

The transducer should also be:

???ahead of propellers (10% W.L. length minimum)

???at least 150mm (6in) from the keel (with sailing yachts siting should be forward of the keel)

???near the centreline of the vessel

???clear of other through hull fittings or projections

???have sufficient clearance inside the hull to allow the nut to be fitted

???have 100mm (4in) clearance above the through hull fitting for withdrawal

Note: The speed transducer can, if required, be shortened. However, new 1/8in spade connectors must be crimped to the shortened cable.

Siting of depth transducer (Standard through hull)

The depth transducer must be vertical to within 10??, forward, aft and athwart ships.

10?? Max

D630

2.5 Cabling

Run the transducer cable back to the instrument. Avoid fluorescent lights, engines, radio transmitting equipment and, in the case of the depth transducer, avoid the speed transducer cable. The cables should also be kept clear of the bilge??s and be secured at regular intervals.

Note: The depth transducer cable must not be shortened. Shortening of the cable will affect the performance of the transducer. For further information, please contact Autohelm or an authorised Autohelm agent.

If any of the following transducers are to be used;

???Bronze through hull depth (Z118)

???In hull puck (Z117)

???Retractable depth (Z120)

???Bronze through hull speed (Z116)

???Transom mount speed (Z119)

???Bronze through hull triducer (Z093)

???Transom mount Biducer (Z183)

the following modification must be carried out to the transducer leads.

1.Using a pair of wire cutters, remove the moulded plug from the end of cable.

2.Strip the outer cable back 38mm (1.5in)

3.Using a pair of cable strippers, remove 10mm (3/8in) of insulation from each wire.

4.Using a suitable crimping tool, attach a 1/8in spade connector (supplied) to each of the wires.

5.Connect the wires to the instrument in accordance with the following table.

Chapter 3: Fault Finding

All Autohelm products are, prior to packing and shipping, subject to comprehensive test and quality assurance programmes. However, in the unlikely event that a fault does occur with the ST30 Bidata, the following table will help to identify the probable cause and provide the most likely cure.

Chapter 5: Operation

The ST30 Bidata is set in the factory to:

???display depth in feet

???display speed in knots

???operate with the depth alarms switched off

???operate in Master mode

These settings can be changed in calibration (section 6.1).

When the ST30 Bidata is switched on, depth information (upper display) and speed information (lower display) is shown in the units set up in calibration.

D710

Note: The trend arrows (???) decreasing (???) increasing, shown in the above display, indicate whether the trend is towards deep or shallow water.

5.1 Depth Key

Each press of Depth cycles the following menu:

??? Shallow alarm

D710

??? Deep alarm

Deep

DEPTH

Metres

D710 ??? Minimum depth

A further press of Depth will return the unit to current Depth. The above menu will automatically return to current Depth after 8 seconds if there are no further key commands.

5.2 Speed Key

Each press of Speed cycles the following menu:

??? Trip Distance

D710

??? Log

??? Maximum Speed

A further press of Speed will return the unit to current boat speed.

Note: Log distances over 999nm or miles are displayed in thousands, hundreds and tens (e.g., 1th 510nm).

5.3 Light Key

Cycles the level of instrument illumination. There are 3 levels with level 3 the brightest.

DEPTH

Metres

SPEED

DEPTH SPEED RESET

The display returns to current speed after 8 seconds or when speed key is pressed.

Note: When the ST30 Bidata is used in a SeaTalk system, illumination may be adjusted from any instrument.

5.4 Alarms

The ST30 Bidata is equipped with visual and audible shallow water and deep water alarms.

Both of these alarms are set in calibration (see section 6.1).

Any button press will silence the 'Shallow' alarm. However, the 'Shallow' indicator will continue to flash until the depth exceeds the alarm value.

The 'Deep' alarm sounds when the 'Deep' setting is crossed either when going from shallow to deep or deep to shallow waters. Any button press will silence the alarm.

Loss of signal

The 'feet or metres' legend flashes whenever the depth signal is lost.

DEPTH

Metres

SPEED

Knots

D720

Chapter 6: Calibration

6.1 Depth calibration

The ST30 Bidata can be programmed to display depth information in feet or metres, set alarms for shallow and deep water and allow for keel or waterline offsets.

To select the calibration menu, press and holdand Depth. After 2 seconds the display will show CAL.

DEPTH

SPEED

DEPTH SPEED RESET

Each press of Depth will cycle the unit through the depth calibration menu.

Units selection ??? depth

1.Cycle Depth until the display shows feet or metres.

2.Select feet or metres, as required, using Reset.

DEPTH

Metres

SPEED

DEPTH SPEED RESET

Shallow alarm

1.Cycle Depth until the 'Shallow' alarm is displayed.

SPEED

DEPTH SPEED RESET

2.Press Reset orto set the required depth.

SPEED

DEPTH SPEED RESET

3.The Shallow Alarm is enabled by pressing Speed. When the alarm is on the 'Alarm' legend is displayed.

SPEED

DEPTH SPEED RESET

Deep alarm

1.Cycle Depth until 'Deep' alarm is displayed.

Deep

DEPTH

Metres

SPEED

DEPTH SPEED RESET

2.Press Reset orto set the required depth.

Deep

DEPTH

Metres

SPEED

DEPTH SPEED RESET

3.The 'Deep' alarm is enabled by pressing Speed. When the alarm is on the 'Alarm' legend is displayed.

Deep

DEPTH Alarm

Metres

SPEED

DEPTH SPEED RESET

Offset

The instrument measures the water depth below the transducer. To display water depth below the keel or to the surface an offset must be set up. A negative offset is used to reduce the displayed value to give water depth below the keel. A positive offset will give water depth to the surface.

1.Press Depth until 'Offset' is selected.

Offset

DEPTH

Metres

SPEED

2.Press Reset oruntil the required offset is displayed.

Offset

DEPTH

Metres

SPEED

Exit depth calibration

To exit depth calibration and return to depth mode, press and holdand Depth for 2 seconds.

6.2 Speed calibration

The ST30 Bidata can be set to display speed in knots or mph and trip and total distance in nm or miles. The most important speed calibration feature is Log Calibration; this calibrates the transducer paddlewheel to the vessel's hull so that accurate speed/log related information is displayed.

Press and holdand Depth for 2 seconds until CAL is displayed.

Units selection ??? speed

1.Cycle Speed until knots or mph is displayed.

2.Press Reset to change between knots and mph.

DEPTH

Mph

SPEED

DEPTH SPEED RESET

Units selection ??? log

1.Cycle Speed until the display shows nm or miles.

DEPTH

DEPTH SPEED RESET

DEPTH

Metres

Mph

SPEED

DEPTH SPEED RESET

Log calibration

The ST30 Bidata should not be used for navigational purposes until the transducer paddlewheel has been calibrated to suit the characteristics of the vessel.

This is a simple operation and is carried out as follows:

1.Choose two charted points that are approximately 1nm apart.

Approximately 1Nm

D699

2.Choosing a time when the tidal flow is at a minimum, go from point 1 to point 2 and record the ST30 Bidata trip distance.

3.Go from point 2 to point 1 and record the trip distance.

4.Add the two distances together and divide by two to obtain an average distance.

5.Measure the distance between the two points on a chart.

6.The correction factor (CF) can now be calculated.

CF = Charted Distance

Average Distance

Enter correction factor (CF)

1.Press and holdand Depth. After 2 seconds the display will show CAL.

2.Press Speed 3 times to select 'Log Calibration'.

DEPTH

SPEED

DEPTH SPEED RESET

3.Set the calculated correction factor (CF) using Reset or.

DEPTH

SPEED

DEPTH SPEED RESET

4.To exit calibration and return to 'Speed and Depth' mode, press and holdand Depth for 2 seconds.

DEPTH

Metres

Mph

SPEED

DEPTH SPEED RESET

6.3 Calibration Lock/Unlock

The lock/unlock feature removes the risk of accidentally changing the calibration values set for log calibration, shallow alarm etc.

For security, the calibration lock/unlock feature is accessed by an extended hold down ofand Depth as follows;

1.Pressand Depth for 14 seconds until CAL is displayed for the second time.

DEPTH

SPEED

DEPTH SPEED RESET

2.Press Speed and Reset momentarily

3.Calibration Lock/Unlock is switched on or off using Reset.

C0 = Calibration Locked, i.e. no access

C1 = Calibration Unlocked, i.e. normal access

4.To exit 'Calibration Lock/Unlock', press and holdand Depth for 2 seconds.

DEPTH

Metres

Mph

SPEED

DEPTH SPEED RESET

6.4 Master/Repeater mode

As it leaves the factory, the ST30 Bidata is set to operate in master mode. In this mode the instrument is connected to speed and depth transducers, and transmits data onto the SeaTalk Bus. The Bidata can be set as a repeater, to repeat depth and speed information already on the SeaTalk bus.

Repeater mode is set up as follows:

1.Press and holdand Depth for 5 seconds until the display shows U and a two figure number.

DEPTH

SPEED

DEPTH SPEED RESET

2.Press Depth to display operating mode: r0 = Master mode

r1 = Repeater mode

DEPTH

SPEED

DEPTH SPEED RESET

3.Press Reset to change between modes

4.To exit calibration, press and holdand Depth for 2 seconds.

DEPTH

Metres

Mph

SPEED

DEPTH SPEED RESET

Note: When the Bidata is set to Repeater mode access to calibration is inhibited.

Speed:

81003-1