Kramer Electronics VP-43xl

The Kramer Electronics VP-43xl Communications Interface Converter is an adjustment-free, Plug & Play interface converter. It works with the most common interfaces used in the video and presentation industry: RS-232, RS-485 and RS-422.

Any control message that is presented on one interface is translated to the other interfaces with the same speed and format. The converter avoids the limitation of RS-232 and RS-422 interfaces that allow only a one-to-one connection. RS-232 in and RS-232 out connectors allow fully transparent RS-232 daisy chaining of several VP43XL units, allowing each one to be connected to a proprietary RS-422 controlled machine.

Up to 32 units may be connected to a VP-43xl via its RS-485 interface. One of 5 baud rates (from 1200 up to 38400 baud) may be selected, as well as a Master/Slave and a Straight/Inverse connection for the RS-422 interface. Also, Pins 2 and 3 on the RS-232 interface may be crossed to avoid using null-modem cables in daisy-chain connections.