StarTech.com ICUSB422 User manual

USB Serial Adapter

USB to RS-422/485 Serial

Adapter Cable

ICUSB422

Instruction Manual

FCC Compliance Statement

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This

equipment generates, uses and can radiate radio frequency energy and, if not installed

and used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off and on, the

user is encouraged to try to correct the interference by one or more of the following

measures:

Reorient or relocate the receiving antenna.•

Increase the separation between the equipment and receiver.•

Connect the equipment into an outlet on a circuit different from that to which the receiver•

is connected.

Consult the dealer or an experienced radio/TV technician for help.•

Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols

This manual may make reference to trademarks, registered trademarks, and other

protected names and/or symbols of third-party companies not related in any way to

StarTech.com. Where they occur these references are for illustrative purposes only

and do not represent an endorsement of a product or service by StarTech.com, or an

endorsement of the product(s) to which this manual applies by the third-party company

in question. Regardless of any direct acknowledgement elsewhere in the body of

this document, StarTech.com hereby acknowledges that all trademarks, registered

trademarks, service marks, and other protected names and/or symbols contained in this

manual and related documents are the property of their respective holders.

Table of Contents

Introduction..................................................................... 1

Packaging Contents.....................................................................1

System Requirements .................................................................1

Installation....................................................................... 2

Hardware Installation...................................................................2

Driver Installation.........................................................................2

Verifying Installation.....................................................................3

DIP Switch Settings ........................................................ 3

DB9 Pin Assignment....................................................... 4

Speciﬁcations.................................................................. 5

Technical Support........................................................... 6

Warranty Information...................................................... 6

Introduction

Packaging Contents

1 x ICUSB422 adapter cable•

1 x Driver CD•

1 x Instruction Manual•

System Requirements

Available USB port•

Microsoft Windows• ®98SE/ME/2000/XP/Server 2003/Vista/7,

or Linux®

Installation

Hardware Installation

Power on the computer and make sure the operating system is fully1.

loaded.

Plug the USB connector on the ICUBS422 adapter cable into an2.

available USB port on the host computer.

The operating system is will automatically detect the new hardware3.

and prompt for drivers.

Once drivers are successfully installed, connect the DB9 connector4.

to the serial cable for your RS-422/485 device.

Driver Installation

Windows 2000/Server 2003/XP

When the Found New Hardware wizard appears on the screen,1.

insert the Driver CD into your CD-ROM drive. If you are prompted

to connect to Windows Update, please select the “No, not this time”

option and click Next.

Select the option “Install Drivers Automatically (Recommended)” and2.

then click the Next button.

Windows should now start searching for the drivers. Once this has3.

completed, click the Finish button.

Windows Vista/7

When the Found New Hardware window appears on the screen,1.

click on the “Locate and install drivers software (recommended)”

option. If prompted to search online, select the “Don’t search online”

option.

When prompted to insert the disc, insert the Driver CD that2.

came with the card, into your CD-ROM drive and Windows will

automatically proceed to search the CD.

If a Windows Security dialog window appears, click the “Install this3.

driver software anyway” option to proceed.

Once the driver is installed, click the Close button.4.

Verifying Installation

Windows 2000/Server 2003/XP/Vista/7

From the main desktop, right-click on “My Computer” (“Computer” in

Vista), then select Manage. In the new Computer Management window,

select Device Manager from the left window panel.

Double-click on the “Ports (COM & LPT)” option. An additional USB

serial COM port should be visible. The port is ready to connect to new

devices.

DIP Switch Settings

Switch Switch Name Switch

Position Description

1 485/422

485

(default) 2-wire RS-485 mode

422 4-wire RS-422 mode

2 Echo/No Echo

Echo Transmitting data will be

echoed back.

No Echo

(default) No data echo

3 No Term/Term

No Term

(default)

Terminator resistor is

disabled

Term Terminator resistor is

enabled

4 None On/Off Switch is not enabled

NOTE:* In “422” mode, the ECHO setting is not used.

The Echo mode is useful for detecting if there is data collision*

occurring on RS-485. If the echoed data is not equal to the

transmitted data, then data collision is occurring.

DB9 Pin Assignment

DB9 Pin RS-422 RS-485

1 TxD - Data +

2 TxD + Data -

3 RxD + NC

4 RxD - NC

5 GND GND

6 NC NC

7 NC NC

8 NC NC

9 NC NC

Specications

Bus Interface USB 2.0

Connectors 1 x USB type A

1 x 9-pin DB9 male

Maximum Baud Rate 921.6Kbps

Termination Resistor 120 Ohm

Chipset FTDI FT232RL

Serial Protocol RS-422 (4-wire)

RS-485 (2-wire)

Power Consumption 110mA

Compatible Operating

Systems

Windows 98SE/ME/2000/XP/

Server 2003/Vista/7, or Linux

Technical Support

StarTech.com’s lifetime technical support is an integral part of our

commitment to provide industry-leading solutions. If you ever need

help with your product, visit www.startech.com/support and access

our comprehensive selection of online tools, documentation, and

downloads.

Warranty Information

This product is backed by a one year warranty.

In addition, StarTech.com warrants its products against defects in

materials and workmanship for the periods noted, following the initial

date of purchase. During this period, the products may be returned

for repair, or replacement with equivalent products at our discretion.

The warranty covers parts and labor costs only. StarTech.com does

not warrant its products from defects or damages arising from misuse,

abuse, alteration, or normal wear and tear.

Limitation of Liability

In no event shall the liability of StarTech.com Ltd. and StarTech.com USA

LLP (or their ofﬁcers, directors, employees or agents) for any damages

(whether direct or indirect, special, punitive, incidental, consequential, or

otherwise), loss of proﬁts, loss of business, or any pecuniary loss, arising

out of or related to the use of the product exceed the actual price paid

for the product. Some states do not allow the exclusion or limitation of

incidental or consequential damages. If such laws apply, the limitations

or exclusions contained in this statement may not apply to you.

StarTech.com has been making “hard-to-ﬁnd easy” since 1985,

providing high quality solutions to a diverse IT and A/V customer

base that spans many channels, including government, education

and industrial facilities to name just a few. We offer an unmatched

selection of computer parts, cables, A/V products, KVM and Server

Management solutions, serving a worldwide market through our

locations in the United States, Canada, the United Kingdom and

Taiwan.

Visit www.startech.com today for complete information about all

our products and to access exclusive interactive tools such as the

Cable Finder, Parts Finder and the KVM Reference Guide.

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