USB2-H-9002-M EasySync, USB2-H-9002-M Datasheet - Page 10

• Manufacturer Part Number: USB2-H-9002-M
• Description: USB Interface IC Hi-speed USB to 4prt Srl RS232/RS485 adpt
• Manufacturer: EasySync

Specifications of USB2-H-9002-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:
Table 2.2 –Jumper Selection of USB2-H-9002-M
Channel
1 and 2
1
2
Jumper
JP1
JP2
JP3
JP4
JP5
JP6
JP7
Connections made
USB2-H-9002-M Hi-Speed USB to 2-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 RI output pin if
the +5V has been enabled. Requires position 4 of SW1 closed.
Disconnects the +5V output onto the channel 1 RI 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 RI output pin if
the +5V has been enabled. Requires position 4 of SW2 closed.
Disconnects the +5V output onto the channel 2 RI 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_000046
Function
Clearance No.: ES
Version 1.0
#33
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