Tait TOP Programming And Service Manual

Also see for T2000 Series: User guide User guide Installation guide System manual Information Pack

Contents

Tait TOP Programming And Service Manual Manual pdf 15 page image

M2259-00-200-812 Tait Orca Portable (TOP) Encryption 15Copyright TEL Encrypted Radio Programming and Service Manual4 Tait Orca Portable (TOP) EncryptionTait Orca Portable (TOP) radios can be encryption-enabled at a Tait Authorised Service Centreusing the TOP Encryption Upgrade Kit (IPN TOPA-EA-001) and a supported Transcrypt orMidian Encryption Module. This kit comprises a flex circuit which brings all the requiredconnections for encryption to a single connector for plug-in encryption functionality. Full fittinginstructions for the flex are included in this manual.Note: Module component values change between TOP and T2000 radios. Ensure the modulefitted has been configured for the TOP radio. See the encryption manufacturer’s servicemanual for more information.User InterfaceThis is a hardware and firmware solution. It offers: user control of Encryption state (On or Off) by any Function button, programmed by theuser, with either short or long press activation menu access to Encryption state (where menu function is available)Where the radio has both a display and a keypad, it also provides: encryption state by text on the radio display user control of up to 16 encryption codes by keypad continuous display of the currently selected encryption code programmable control of the number of user accessible codes display of the ‘accessory triangle’ indicating when transmitting or receiving encryptedsignals (Transcrypt modules) or if the encryption state is ON (Midian modules).4.1 Circuit OperationFunctions of the interface are: Transmit and receive audio is intercepted by the flex, where C572 and C567 are removed.Audio passes through the encryption module and is encrypted or not according to theencrypt state. Links (not shown on the block diagrams, see the circuit diagram on page 21) allow the radioto function as a standard, unencrypted radio when an encryption flex is fitted with nomodule. To enable the radio to operate when a module is not fitted (-06 flex version only),solder-short Link-6 and Link-7 to loop the audio back to the normal radio path. Radios with-07 (or later version) flexes fitted do not require these links fitted. The existing flex circuit that connects the Main PCB to the User Interface PCB is discarded,and is replaced by the encryption flex circuit.The low voltage reset from the radio is usedto reset the module circuit.Signal levels and pin assignments.Function Mode Name Pin Module TOP RadioPower Supply V+ 1 5V regulatedReset I/P RS 2 Active low Resets whenever supply lowerthan 4.75VTx pressel I/P PTT 3 Active low CMOSBusy I/P RX 4 Active low CMOSMode I/P MO 5 Active low Momentary or level sensitiveData to Scrambler I/P D-SC 6 Hardwired moduleprogramming I/PIf reqd.