RS232-CONVERTERS.COM SERIAL AND USB CONVERTER PRODUCTS SIMA S. ENTERPRISES   1-877-647-7434 SERIAL RS232, RS485, RS422, AND TTL CONVERTERS - USB ADAPTERS  GENDER CHANGERS - FIBER OPTIC CONVERTERS - ETHERNET CONVERTERS

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WORRY FREE GUARANTEE! 30 Day Money Back! • 5 Year Warranty! • Free Shipping! • Same Day Express Shipping! • Industry Proven Highest Quality Products!

With over 10,000 satisfied customers, Sima S. Enterprises offers the finest quality industry proven USB, RS-232, RS-485, RS-422, TTL, Ethernet, and Fiber Optic converters available.  All of our products are shipped the same day ordered and come with a 30 day satisfaction guarantee and a 5 year manufacturer's warranty. FREE WORLDWIDE SHIPPING ON ALL PRODUCTS OPTIONAL SAME DAY EXPRESS SHIPPING UNTIL 7:30 PM EST PRODUCT INVENTORY STATUS:   ALL PRODUCTS IN STOCK

Frequently Asked Questions

Question 30:  HOW DO I PERFORM A LOOPBACK TEST FOR MY RS-232 / RS-422 CONVERTER?

Answer:  Performing a Loopback Test is easy with Hyperterminal software.  Simply connect TX+ and TX- to RX+ and RX- respectively and connect the RS-232 / RS-422 converter to your PC's COM port. Send characters in Hyperterminal and you should receive an echo of those characters.   By performing a simple Loopback Test like this, you can test both the Transmitter and Receiver of your RS-232 / RS-422 converter, which is very helpful when you have questions about the performance of your converters or cables.

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