AVer SA series - Manual (Page 90)

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RS485 port through the RS232 to RS485 converter
This way of installation is suitable for below listing DVR series and when the System Controller is connecting
with multiple DVR servers.
SA6000E SA6000E Pro SA7000H SA5000
Before starting to make a connection, please prepare the following items:
RS232 cable RS485 to RS232 Converter
(*User can purchase from the dealer
** The RS232 to RS485 Converter needs to support RS-485
automatic data direction control protocol )
Single core wire
1. Using the screwdriver to press down the orange tenon and insert the single core wire cable into the pin
hole of the I/O terminal on the System Controller. When the wire cable is inserted in the end of the pin
hole, release the orange tenon to fix the wire cable.
2. Set the DIP switch of the RS232 to RS485 converter at 4-wire RS485 setting.
3. Using the screwdriver to lose the pin hole of RS485 to RS232 converter. And then, insert the another
side of single core wire cable into the T+, T-, R+, and R- pin hole of the RS485 to RS232 converter.
Using the screwdriver to screw tight the wire cable.