USB2-H-6004 EasySync, USB2-H-6004 Datasheet - Page 9

• Manufacturer Part Number: USB2-H-6004
• Description: USB Interface IC Hi-speed USB to 4prt Serial RS422 Adapter
• Manufacturer: EasySync

Specifications of USB2-H-6004

• Rohs: yes

2.2.2 Wiring
A standard 0.9m USB “A” to “Mini B” cable is provided.
Insert the A-plug into an available USB Host or Hub port. Insert the Mini B-plug into the Mini B-
receptacle on the USB2-H-6004.
The USB2-H-6004 follows EIA-422 standard as a Data Terminal Equipment (DTE) device. If the RS422
equipment being connected is a Data Communication Equipment (DCE) device, it’s typical that a straight-
through cable can be used.
Table 2.1 – RS422 DTE to DCE connection with straight-through cable
Some serial devices may require certain handshake signals be connected. Refer to your device manual
for cabling details.
The USB2-H-6004 adaptor drivers are available for download from:
www.easysync.co.uk
www.easysync-ltd.com
2.3.1 Microsoft Windows
With the device drivers being Windows Hardware Quality Labs (WHQL) certified, they are also available
through download directly from the Microsoft
2.3
DTE Pin Number
Device Driver Installation
1
2
3
4
5
6
7
8
9
Signal Name
TXD- = Transmit Data,
negative polarity
TXD+ = Transmit Data,
positive polarity
RXD+ = Receive Data,
positive polarity
RXD- = Receive Data,
negative polarity
GND = signal ground
RTS- = Request To Send,
negative polarity
RTS+ = Request To Send,
positive polarity
CTS+ = Clear To Send,
positive polarity
CTS- = Clear To Send,
negative polarity
– United Kingdom site
– USA site
USB2-H-6004 Hi-Speed USB to 4-Port RS422 Adapter Data Sheet
©2010 EasySync Ltd.
®
Windows
Expected Connect Signal
®
Update service. This is the best choice when
RXD+
TXD+
CTS+
RTS+
RXD-
TXD-
CTS-
RTS-
GND
Document Reference No.: ES_000030
Clearance No.: ES
Version 1.01
#24
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