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The maximum length of the ADB link is 5 m.<br />

These two connectors enable the terminal and keypad to be connected separately.<br />

Connecting S0 terminals<br />

Options 4084ISW and 4084 IS enable the connection of S0 terminals supplied remotely or<br />

otherwise.<br />

The terminals are connected using the 8 pin connector (X301) of boards 4084 IS and 4084<br />

ISW. The type of bus is specified by the positioning of the X102 connector jumpers. X302<br />

defines the termination resistance of the 2 connection pairs.<br />

X104: connector for the power supply<br />

- 1: - 48 V - 2: + 48V<br />

X301: connector for the S0 bus<br />

- 1 and 2 - not used - 5 - TX -<br />

- 3 - RX + - 6 - RX -<br />

- 4 - TX + - 7 and 8 - not used<br />

Short passive bus Long point-to-point bus (X102 across 1-2) (X102 across 2-3)<br />

Short point-to-point bus Extended bus (X102 across 1-2) (X102 across 2-3)<br />

Connecting analog terminals<br />

The Z station interface is of type TNV (Telecommunication Network Voltage) with an electrical<br />

2-187

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