USB2-H-1002 EasySync, USB2-H-1002 Datasheet - Page 11

• Manufacturer Part Number: USB2-H-1002
• Description: USB Interface IC Hi-speed USB to 2 pt Serial RS232 Adapter
• Manufacturer: EasySync

Specifications of USB2-H-1002

• Rohs: yes
• Product: USB 2.0
• Data Rate: 1 Mbps
• Interface Type: RS-232, Serial, USB
• Operating Supply Voltage: 4.25 V to 5.25 V
• Operating Supply Current: 30 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C

Insert the A-plug into an available USB Host or Hub port. Insert the miniB-plug into the miniB-receptacle
on the USB2-H-1002.
RS232 cables have followed a standard 9-pin configuration on a D-sub connector since the mid 1980s.
The USB2-H-1002 follows this standard as a Data Terminal Equipment (DTE) device. If the RS232
equipment being connected is a Data Communication Equipment (DCE) device, it’s typical that a straight-
through cable can be used.
Table 2.1 – RS232 DTE to DCE connection with straight-through cable
If the USB2-H-1002 is connected to another DTE device, a serial “null-modem” cable is required. A null-
modem handles connecting output signals to the corresponding input signals on the other end. Table 2.2
shows a typical null-modem cable. Note that RI and DCD are not always used.
Table 2.2 – RS232 DTE to DTE connection with null-modem cable
Some serial devices may require certain handshake signals be connected. Refer to your device manual
for cabling details.
2.3
The USB2-H-1002 adaptor drivers are available for download from:
www.easysync.co.uk – United Kingdom site
DTE Pin Number
DTE Pin Number
Device Driver Installation
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
Signal Name
DCD = Data Carrier Detect
RXD = Receive Data
TXD = Transmit Data
DTR = Data Terminal Ready
GND = RS232 signal ground
DSR = Data Set Ready
RTS = Request To Send
CTS = Clear To Send
RI – Ring Indicator
Signal Name
RXD = Receive Data
TXD = Transmit Data
DTR = Data Terminal Ready
GND = RS232 signal ground
DSR = Data Set Ready
RTS = Request To Send
CTS = Clear To Send
USB2-H-1002 Hi-Speed USB to 2-Port RS232 Adapter Data Sheet
©2010 EasySync Ltd.
DCE Pin Number
DTE Pin Number
1
2
3
4
5
6
7
8
9
3
2
6
5
4
8
7
Document Reference No.: ES_000024
Clearance No.: #
Version 1.01
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