Model 7387 Automatic Fallback A/B Switch Monitors RD or DCD Activity

May 2, 2011 - PRLog -- Electro Standards Laboratories, Cranston, RI, announces the PathWay® Model 7387 Single Channel RS-232 DB25 A/B Switch with Fallback and Remote Port. The Model 7387 allows sharing a single port interface device connected to the Common port among two other devices connected to the A and B ports.  

The remote port can be used to attain switch position status by using the provided set of contact closure pins.  The remote port can also be used to control the switch position using a separate set of contact closure pins.

When in automatic fallback mode the unit monitors either RD activity or DCD presence on ports A and B.  If activity or presence of the selected trigger signal (RD or DCD) is lost on the current port, the unit checks if there is activity or presence on the other port and, in the event that there is activity or presence, the unit switches to the other port.  If there is no activity or presence on either port, the unit will maintain its connection to its current port and continue to monitor both ports.  The user can override automatic fallback operation from the front panel or remote port and force the unit to operate as an RS232 Fallback A/B switch.

All switched signals are passed via latching copper contact relays that maintain their position and continuity even in the event of a power loss. When power is restored, the Model 7387 loads previous position and mode of operation and checks the DIP switch settings and remote port to determine the correct startup configuration.

For detailed information on the Model 7387 visit http://www.electrostandards.com/ProductDetail/?productid=.... This switch is available at a discount to government purchasers via GSA Schedule GS-35F-0286V. Electro Standards’ staff of knowledgeable sales engineers is available to assist with product and application questions: 401-943-1164, eslab@electrostandards.com.

# # #

About Electro Standards Laboratories: Manufactures copper and fiber optic network switches and cable assemblies, interface converters, strain gage indicators, and digital signal conditioners. The Electro Networks division designs and installs voice/data networks. The R&D contract engineering services group specializes in the development of motor control and power systems.