StarTech.com CB1S485 User manual

Manual Revision: 04/17/2013
For the most up-to-date information, please visit: www.startech.com
DE: Bedienungsanleitung - de.startech.com
FR: Guide de l'utilisateur - fr.startech.com
ES: Guía del usuario - es.startech.com
IT: Guida per l'uso - it.startech.com
NL: Gebruiksaanwijzing - nl.startech.com
PT: Guia do usuário - pt.startech.com
CB1S485
1 Port CardBus (PCMCIA) RS422/485
Serial Laptop Adapter
*actual product may vary from photos

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 o 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 dierent 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.

Instruction Manual
i
Table of Contents
Introduction ............................................................................................1
Packaging Contents ................................................................................................................................. 1
System Requirements .............................................................................................................................. 1
Hardware Guide .....................................................................................2
Installation ..............................................................................................4
Driver Installation ...................................................................................................................................... 4
RS-485 2-wire mode ................................................................................................................................. 5
Baud Rate ..................................................................................................................................................... 5
Application Wiring .................................................................................................................................... 6
RS-422 (Transmitter buer is always enabled) ............................................................................... 7
Specications ..........................................................................................8
Technical Support ..................................................................................9
Warranty Information ............................................................................9

Instruction Manual
1
Introduction
Packaging Contents
• 1x Serial PCMCIA Card
• 1x Breakout Cable
• 1x Driver CD
• 1x Instruction Manual
System Requirements
• A host computer with an available CardBus Slot. Please note that CB1S485 can be
used on a desktop computer, using a PCMCIA to PCI Adapter Card.
• Windows® 7 (32/64bit)/ Vista(32/64)/ XP(32/64), 2000, ME, 98SE, CE 5.0 Windows®
Server 2008 R2/ 2003(32/64) Linux Kernel 2.4.x/ 2.6.x

Instruction Manual
2
Hardware Guide
UART Input Clock Speed Selector
RS-422/485 Mode Selector
Switch
Name
Switch
Positions Clock Speed
HSPD
(Up)
UART Input Clock
Speed =
1.8432MHZ,
Maximum baud
rate is115.2Kbps
(Down)
(Default)
UART Input Clock
Speed =
14.7456MHZ,
Maximum baud
rate is
926.1Kbps
(default).
Setting requires
adjustment from
Windows Device
Manager
Switch
Name
Jumper
Positions
Mode and
Termination
Resistor Setting
422
Up
(default)
2-wire RS-485
mode (Note)
Down 4-wire RS-422
mode
NECH
Up
Transmitting
data will be
echoed back
Down
(default) No echo data
NLP
Up
RTS will be
connected to
CTS
Down
(default)
RTS and CTS
operate normally
HSPD
Switch
422/485
Mode Switch
No Echo/
Echo Switch
No Loop/
Loop Switch
NOTE:
1. Please note that if the mode were set at
“422” mode, the other settings (NECH
and NLP settings) will take no eect.
2. Echo mode is used to detect data
collisions. If the echoed data was not
equal to the transmitted data, then data
collisions are occurring.

Instruction Manual
3
Terminator Settings
DB9 Connector Pinout
Terminator Enable/
Disable Switches
Switch
Name
Jumper
Positions
Mode and
Termination
Resistor Setting
TXD
Up
(default)
2-wire RS-485
mode (Note)
Down 4-wire RS-422
mode
RXD
Up
Transmitting data
will be echoed
back
Down
(default) No echo data
RTS
Up
(default)
RTS will be
connected to CTS
Down RTS and CTS
operate normally
CTS
Up CTS Terminator
Disabled
Down
(default)
CTS Terminator
Enabled
9 Pins Signal
1 TXD- (DATA-)
2 TXD+ (DATA+)
3 RXD+
4 RXD-
5 GND
6 RTS-
7 RTS+
8 CTS+
9 CTS-
1 5
96

Instruction Manual
4
Installation
WARNING! It is advisable to remove all possible static discharge potential from any
objects that the ExpressCard may come in contact with before installation. This can be
accomplished by touching a grounded metal object, prior to insertion
1. With the notebook PC powered on and fully booted, insert the PCMCIA Card into an
available CardBus slot on the host computer.
2. Connect the 15-pin connector of the cable to your PC card, then connect the DB9
connector to your serial device.
3. The Add New Hardware Wizard will launch and will guide you through the driver
installation process.
Driver Installation
Windows 98, ME, 2000, XP, 2003
The necessary driver les are in ZIP format (e.g. V6515_RS422_485.ZIP) and are located
in E:\IO\OXFORD\RS422_485 (where E: denotes the CD/DVD-ROM drive. Please copy
the le to your local hard drive (presumably C:) and unzip it before proceeding with
installation.
1. When the Found New Hardware Wizard appears, click Next to continue.
2. Select Install from a list or specic location (advanced) and click Next.
3. Select Include this location in the search and click Browse to specify the
driver’s location.
4. Click Next to continue, then click on Finish to complete installation.
Windows NT
Because Windows NT does not support plug and play, you will need to locate the
Install_Serial.exe le (in the E:\IO\OXFORD\WinNT4 folder, where E designates the
location of the CD/DVD-ROM drive), and double click on the executable le. Follow the
prompts to complete installation.

Instruction Manual
5
RS-485 2-wire mode
To enable CB1S485 to operate in RS-485 2-wire mode:
1. Right-click on My Computer. If you are using Windows 98/ME, select Properties. If
you are using Windows 2000/XP, select Manage.
2. Choose Device Manager and double-click on Ports.
3. You will notice the added ports, listed as a PCI Communications Port. Double-click
on the COM Port you wish to congure, and select Settings.
Windows 2000, XP
1. In the PCI Communications Port Properties window, click on the Settings tab.
2. Under Hardware cong, select RS422/485, and change the RS485 buer enable
value to Active Low, using the dropdown box provided. Click OK to save and exit.
Windows 98, ME
1. In the PCI Communications Port Properties window, click on the Settings tab.
2. Change the DTR function to RS485 Buf_En Active Low, using the dropdown box
provided.
Baud Rate
By default, CB1S485 is set to a baud rate of 115.2Kbps (maximum). To increase the
baud rate to 921.6Kbps maximum:
Windows 2000, XP
1. As mentioned on page 2, move the HSPD switch to the down position.

Instruction Manual
6
2. Right-click on My Computer and select Manage.
3. Choose Device Manager and double-click on Ports.
4. You will notice the added port, listed as a PCI Communications Port. Double-click
on the COM Port you wish to congure, select Data rate, click on Detect Crystal
Frequency, then OK.
Windows 98/ME
1. As mentioned on page 2, move the HSPD switch to the down position.
2. Right-click on My Computer and select Properties.
3. Choose Device Manager and double-click on Ports.
4. You will notice the added port, listed as a PCI Communications Port. Double-click on
the COM Port you wish to congure, select Data rate, and put a checkmark next to
Detect Crystal Frequency by clicking in the box provided. Click on OK to save
this setting.
Application Wiring
RS-485 (Transmitter is controlled by ATTATM Hardware)
NOTE: CB1S485 supports optional auto
echo mode operation. When enabled, data
sent to the connected RS-485 transmitter
is simultaneously sent to the receiver.
The current application can then use the
“echoed” data to check for data collisions.

Instruction Manual
7
RS-422 (Transmitter buer is always enabled)
NOTE: CB1S485 supports 4-wire RS-422 mode, which requires cross-over twisted
pair cable.
CB1S485 also provides two handshaking signals, RTS+/RTS- and CTS+/CTS- to perform
hardware ow control, which requires the following wiring scheme:
4-wire Twisted
Pair Cable
CB1S485
RS422
Device