Black Box Code-Operated Switch - switch - 4 ports

Controls up to four serial RS-232 devices from your PC. DTE/DCE-selectable so you can switch between a modem and a printer. There's no need for crossover cables. Safe for use with laser printers. Includes a hardware-handshake lead in each direction for added control. No unintended triggering- no matter what data you're sending. Also available with eight ports. The integrated Code-Operated Switch RS-232 4-Port is an asynchronous RS-232 switch with four subordinate ports and one master port that enables you to switch serial devices with codes. There's no unintended triggering with this switch- no matter what data you're sending. With an internal DIP switch you select the arming character to use as a trigger. You can set each port individually as DTE or DCE. That's handy for switching among modems and printers. And your connection is secure. Once a connection is made other ports are locked out. (Remember that all ports need to be set to operate with identical speeds and word structures.) For extra control there's a hardware-handshake lead in each direction in case a device (or the computer) needs it. The upgraded switch platform has several new features including Integrated transceiver loopback for faster fault isolation. Enhanced front-panel LED display to provide a visual indication of more switch operations including the status of data activity switch time port lockout and control handshake. Power-on initialization that includes port selection default. Onboard programmable PROM to provide function updates and maintenance via active serial and JTAG connections.