Chapter 4: Calibration; Introduction; Emc Conformance; User Calibration - Raymarine ST40 Bidata Owner's Handbook Manual

Chapter 4: Calibration

Chapter 4: Calibration

4.1 Introduction

The procedures in this Chapter must be carried out before the
equipment is used operationally, to optimise the performance of the
instrument with the vessel.
Calibration information is presented in flow chart form. The flow charts
show the various calibration screens and key presses necessary to carry
out calibration. All key presses are momentary unless otherwise stated.

EMC conformance

• Always check the installation before going to sea to make sure that it

4.2 User calibration

User calibration enables you to:
• Set the required units for speed readings. Either KTS (knots), MPH
• Select temperature units. Either °C or °F, as required.
• Set the speed display response. Use higher response values when
• Set the correct speed reading, either by using a Cal factor screen to
• Set the depth display response. Use higher response values when
• Set the required units for depth readings. Either FT (feet), M (metres)
is not affected by radio transmissions, engine starting etc.
(miles per hour) or KPH (kilometres per hour).
boating in conditions requiring rapid updates of the current speed
(e.g. competition sailing or on power boats). Use slower response
values when you require an average speed over a longer period of
time (e.g. when cruising, especially in heavy seas).
adjust the calibration factor, or by applying Speed Over Ground
(SOG) as the current speed. Your vessel must be moving at 0.5 KTS
or more and be receiving SeaTalk SOG data, to enable SOG to be
applied as the current speed. This should be done only in conditions
of zero tide and current.
boating in conditions requiring rapid updates of depth information
(e.g. inshore, especially when travelling at high speed). Use slower
response values when you require an average depth over a longer
period of time (e.g. deep sea cruising).
or FA (fathoms).
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