Chapter 4: CodeLock 31Chapter 4: CodeLockCodeLock is a personal four-digit security feature designed to protectyour valuable instruments against theft. You donít have to activate thesystem, but itís there if you need to. You can activate it using anyCodeLock-compatible control unit on your SeaTalk system.When you first enter a code and activate CodeLock, the code is sent toall the CodeLock-compatible units on the system. After this, wheneveryou power on the system, the units will only start up if they receive thecorrect code.Remember to fix a CodeLock sticker by each instrument, to deterpotential thieves.4.1 CodeLock modesWhen you set up CodeLock, you can choose whether the code will besent automatically or must be entered manually at power on, as follows:ï Auto mode is used when there is a display unit situated in a securelocation, ideally below deck, or one which can be unplugged andremoved to a secure location. You enter your chosen code on thisìmasterî unit when you first activate CodeLock. This code is thenautomatically sent to all CodeLock-compatible display heads onSeaTalk, without further intervention, every time the system ispowered on.ï Manual mode is used to provide a higher degree of security,perhaps when all your instruments are mounted in exposedlocations. In this case, you must enter your personal code every timethe system is switched on. The code can be entered into anyconvenient CodeLock-compatible control unit, and is then sent to allthe other compatible units via SeaTalk.4.2 Setting up CodeLockCodeLock is set up and activated on the ST4000 Plus using theIntermediate Setup options.Initial setupWhen you first install your ST4000 Plus, CodeLock is set OFF. Toactivate CodeLock, refer to the flow diagram on the next page.
