USB2-H-9004-M EasySync, USB2-H-9004-M Datasheet - Page 11

• Manufacturer Part Number: USB2-H-9004-M
• Description: USB Interface IC Hi-speed USB to 4prt Srl RS232/RS485 adpt
• Manufacturer: EasySync

Specifications of USB2-H-9004-M

• Rohs: yes

Jumper Settings
There are various jumpers on the adaptor PCB. These can be used to select the functions described in the
following table:
Channel
All
1
2
Jumper
JP1
JP2
JP6
JP7
JP3
JP8
JP9
Connections made
USB2-H-9004-M Hi-Speed USB to 4-Port RS232/RS485 Adapter Data Sheet
not connected
not connected
not connected
not connected
not connected
not connected
(default)
connected
(default)
connected
(default)
connected
(default)
connected
(default)
connected
(default)
connected
(default)
1-2
2-3
©2010 EasySync Ltd.
Power supplied from USB Host 5V
Power supplied from +5V power jack input.
Connects the +5V output onto the channel 1 output
pin if the +5V has been enabled. Requires Position 4
of SW1 closed.
Disconnects the +5V output onto the channel 1
output pin if the +5V has been enabled.
750Ω pull-up bias resistor on channel 1 RS485 Data
+ is connected in circuit
750Ω pull-up bias resistor on channel 1 RS485 Data
+ is NOT connected in circuit
750Ω pull-down bias resistor on channel 1 RS485
Data - is connected in circuit
750Ω pull-down bias resistor on channel 1 RS485
Data - is NOT connected in circuit
Connects the +5V output onto the channel 2 output
pin if the +5V has been enabled. Requires Position 4
of SW2 closed.
Disconnects the +5V output onto the channel 2
output pin if the +5V has been enabled.
750Ω pull-up bias resistor on channel 2 RS485 Data
+ is connected in circuit
750Ω pull-up bias resistor on channel 2 RS485 Data
+ is NOT connected in circuit
750Ω pull-down bias resistor on channel 2 RS485
Data - is connected in circuit
750Ω pull-down bias resistor on channel 2 RS485
Data - is NOT connected in circuit
Document Reference No.: ES_000047
Function
Clearance No.: ES
Version 1.0
#34
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