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SPECIFICATIONS :
1.RS232 to RS485 network, which provides galvanic isolation from other devices on the network.
2.Management activities RS485 transmitter signal.
3.RTS (level 1 log or log 0) or TXD together with RS485 control receiver, either permanently, or inversely to managing the transmitter (with or without its own echo) allows access.
4.Devices with RS232 interfaces to the various protocols to the network 485.
5.Galvanic isolation (to level 1 kV) protects the terminals before damage by balancing the flow of shocks or induced over voltages.
6.The transmitter is fitted with an additional surge (soft) protection on the RS485 line and also on the power voltage.
7.Engaging terminating resistor, control transmitter and receiver, disconnect the module from the communication line and connect the resistors most of the lines in the resting state (pull-up, pull-down) can be realized directly on a printed circuit board jumpers (when open Upper panel - screwdriver).
SPECIFICATIONS:
1.For use in controlling PTZ Cameras.
2.Package Label: High Tech. RS-232 to RS-485/422 Interface converter.
3.List of components used in RS232 to RS 485 converter. C1, C2 ,C3, C4 = 2.2UF ; C5 = 22UF ; C6,C7 = 0.1UF;
IC1 = RS232 or Max232 or TL232 or SN232;
IC2 = RS485 or SN75176 or MAX485 ;
TR1 = BC557 or C1383 or c828.