RS232 RS422/485 Converter

K3

RS232 to RS422/485 isolated converter, line powered

K3 is a general purpose RS232-RS422 converter. Can also be used for RS485 if driver control is not required or if the RS232 device  provides RTC Control.
K3-ADE is identical to K3 but with the addition of a microprocessor which enables and disables the RS485 driver according to the precence of RS232 data. The K3-ADE is intended for 2-wire RS485 applications and for 4-wire RS485 applications
where the K3-ADE is on the slave device. However the ADE function can be switched off entirely and the K3-ADE can be used as a K3.
K3-232 is a RS232-RS232 port isolator. This simply isolates RS232 data (Rx, Tx) signals are supported. Also the RTS signal from the local RS232 device is passed through to the remote RS232 device. No other hardware handshake signals pass through.

Plugs directly into a IBM PC 9-way serial port
Isolation 100% tested at >1000V AC
RS232 port-powered in most applications
0-38400 baud (1200-38400 baud for K3-ADE)
Automatic Driver Enable (ADE) version - K3-ADE
Very low supply current
RS232 output swings above and below ground
Sony professional compatible (also known as SMPTE) RS422 pinout
Very low cost
Replaces K422-ISOL/K485-ISOL and all options

The K3 is an isolated RS232-RS422/485 converter for up to 38400 baud.
For RS485 use, RTS Control may be required from the RS232 device.
The K3-ADE does not need RTS Control.