N EW RoHS Compliant US-313 USB 2xRS422/485 "SERIAL CARDs Engineered to Exceed Expectations" Description USB to Serial providing two RS422/485 serial ports. Up to 921,600 data transfer rates and the 128 byte deep transmit and 384 byte receive FIFOS, coupled with 1Mbit line drivers deliver uncompromising performance on your laptop/PC. USB to serial is the quick low cost way to connect your computer to a serial comms enabled device. Boost software gives industry leading functionality and compatibility. RS422 Standard: RS422 allows one transmitter and up to 10 receivers with data transmitter rates up to 10 megabits per second for distances up to 40 feet and up to 100 Kilobits per second for distances up to 4000 feet (1219 metres).To achieve good long distance noise immunity, 2 wires are used to carry each signal, configured as a twisted pair of cables. The TXD pair and RXD pair are used to carry the data whilst the RTS pair and CTS pair lines are used for handshaking. Thus 2 twisted pairs are used without handshaking and 4 twisted pair cable is used with handshaking both these schemes allow full duplex data communications. Features * 2 port RS422/485 * USB to Serial * 128 Byte Tx and 384 Byte Rx FIFOs * Up to 921,600 Baud RS485 Standard: RS485, based on the RS422 standard allows up to 32 driver/receivers pairs on a party line data bus. Whilst only one of these should be transmitting data at any time, the rest can all simultaneously listen to the data. Handshaking is performed by software protocol. Two twisted pairs form a full duplex system. Often only one twisted pair cable is used as the TXD and RXD lines are tied together; this is known as half duplex mode. Traditionally, the RTS signal is used as the party line control to tristate the PC's transmitter, but in multitasking operating systems like Windows or Linux the only reliable method is hardware autogating. Brainboxes RS422/485 products implement a state of the art autogating circuit thus ensuring error free communications in half duplex configuations. These products do away with traditional issues with USB technology so you can buy with confidence! With Brainboxes industry renowned Lifetime Warranty and Lifetime Support! * 2xDB9 connector (9 Pin Male) * Drivers for all popular operating systems * Sample Programs, Test & Terminal software * Lifetime Support * Lifetime Warranty (registration required) * Supplied with USB Cable Software Microsoft signed drivers (easy installation & robust operation) for: * * * Windows 7 32 bit and 64 bit editions Windows Vista 32 bit and 64 bit editions Windows XP 32 bit & 64 bit editions As well as: full product documentation, a thorough troubleshooting guide and terminal software. Detailed sample source code for many popular programming languages. Further OS support on next page. * Side hinges to allow DIN rail mounting Accessories MK-048: DIN-Rail mounting kit for 1 & 2 Port ES/US Order Description Code USB 2xRS422/485 US-313 +44(0) 151 220 2500 | sales@brainboxes.com | www.brainboxes.com US-313 USB 2xRS422/485 US-313: Full Specification Ports 2 x RS422/485 Connector 2xDB9 connector (9 Pin Male) FIFO size 384 RX FIFO + 128 TX FIFO Operating Distance RS422/485 Standard (4000 ft : 1200 metres) Cable USB Cable Baud Rate 921,600 921,600 Data Bits 7 or 8 baud Parity Odd, Even, None, Mark or Space Stop Bits 1 or 2 Flow Control RTS/CTS, XON/XOFF Tx/Rx Modes Full Duplex, Half Duplex Autogating OS Compatibility Windows 7 32 bit & 64 bit Editions Windows Vista 32 bit & 64 bit Editions Windows XP 32 bit & 64 bit Editions BUS USB Other Approvals WEEE RoHS EMC: CE Microsoft Certified Gold Partner Microsoft Approvals Microsoft Certified Gold Partner Windows 7 32 bit & 64 bit editions Windows Vista 32 bit & 64 bit editions Port Port Settings Interface Approvals Windows XP 32 bit & 64 bit editions General Box Content Product Support Additional Made in the UK PCB Layers 4 Power Consumption 180mA Weight 0.385 Kg Size 100 x 105 x 26 mm Packaging Installation CD including manual, Microsoft signed drivers & utilities Device USB 1xRS422/485 Warranty Lifetime (online registration required) Support Lifetime Web, Email and Phone Support from fully qualified, friendly staff who work in and alongside the Product Development Team OEM option Available for bulk buy OEM Made In Manufactured in the UK by Brainboxes Winner 2005 European Electronics Industry Awards "Manufacturer of the Year" Customisable Brainboxes operate a "Perfect Fit Custom Design" policy for volume users. More Info: sales@brainboxes.com Datasheet Version: 3.28 Published on: 2009/6/26 +44(0) 151 220 2500 | sales@brainboxes.com | www.brainboxes.com