Atrix DVRY0803S Manual do Utilizador descarregar pdf (Página 19)

STANDALONE DVR USER MANUAL

The switch 1 and 2 are terminal resistance switches for RS422 buses. The “ON”

position is factory default meaning the terminal resistances are effective.

Note: When there are several non-terminal devices connected to the 422/485 bus and

this device is not the end of the bus, the resistances should be disconnected.

：

ALARM OUT 4 channel switch-level alarm output,30VDC 1A，125VAC 1A；

RS422 interface：for duplex operation of data transmitting and receiving

+：transmit data, T

-：transmit data

+：receive data, R

-：receive data

Note: R + / R- support 485 keyboard

6 Power Input

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 77 78

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Atrix DVRY0803S Manual do Utilizador Página 19