Exsys EX-47925 User manual

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EX-47925
RS-232 to RS-232 Isolator
1. Introduction
Thank you for purchasing this RS232 (to RS232) Isolator and Surge Protector. It is designed for
your PC, workstation, thin client, or server to provide an instant isolation solution for the RS232
serial devices. It provides a DB9 female connector (DCE, with standard RS232 signals, TXD,
RXD, RTS, CTS, DTR, DSR, DCD and GND) that can be connected directly to your PC’s RS232
port. An external 5V DC power source should be applied to its input DC jack. The power source
can be supplied by either an AC power adapter or an USB-to-DC-Jack conversion cable.
Features:
 Provides one RS232 to RS232 Adaption
 Supports up to 2,500Vrms Isolation for all RS232 Signals
 Supports all RS232 Signals (TXD, RXD, RTS, CTS, DTR, DSR , DCD, and GND)
 Supports DB9 Female (DCE) to DB9 Male (DTE) Connector Conversion
 Supports Baud Rate up to 921.6 Kbps
 +5V DC External Power is Required, Powered by AC Adapter or USB Port with an USB-to-
DC-Jack Cable
 Compact Size for Critical Applications
 No Driver Required for All Operating Systems
2. Board Layout
DC Jack:
5V DC Power
Input here
Female DB9 Connector (DCE)
Wall mounting Kit
Rear Panel:
Male DB9 Connector (DTE

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RS-232 Isolator
3. Installing the RS-232 Isolator
Since this isolator hardware unit should be powered by the external power source,
please connect the 5V AC power adapter or the USB-to-Power-DC-Jack Conversion
Cable to make sure the unit works properly. If you are using the USB-to-Power-DC-Jack
Cable instead of the AC adapter, please make sure that the USB port is at Host side (the same
side as the DB9 female connector), DO NOT connected to the USB port at the device side (the
same side as the DB9 male connector), otherwise, the unit won’t work and the DC power was
passed though the isolation circuits so the isolator will not function properly.
1. Use static electricity discharge precautions.
Remove possible static discharge potential from any objects that the converter may come in
contact with before installation. This can be accomplished by touching a bare metal chassis
rail after you have turned off the power.
2. Locate an unused PC’s RS232 port (with DB9 male connector, configured as DTE),
connect it to the Isolator’s DB9 female connector with a RS232 cable, find another
cable to connect the RS232 Device to the Isolator’s DB9 male connector.
RS232
Device
3. Connect the 5V AC Adapter or USB-to-Power-DC-Jack Conversion Cable

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RS-232 Isolator
4. Female DB9 Pin Cable Wiring (Host to EX-47925)
DB9F (DCE, Isolator)
1 DCD
2 TXD
3 RXD
4 DTR
5 GND
6 DSR
7 CTS
8 RTS
DB9(DTE, Host PC)
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
DB9(Male, Host PC) to DB9(Female, Isolator) Wiring:
9 Pins Signal 9 Pins Signal
1DCD 6DSR
2RXD 7RTS
3TXD 8CTS
4DTR 9NC
5GND
NC = No connection
DB9-Male Pin Assignment:
5
1
9
6
DB9F (DCE, RS-232 Device)
1 DCD
2 TXD
3 RXD
4 DTR
5 GND
6 DSR
7 CTS
8 RTS
DB9M (DTE, Isolator)
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
DB9(Male, Isolator) to DB9(Female, RS-232 Device) Wiring:
DB9-Female Pin Assignment:
NC = No connection
1
5
6
9
9 Pins Signal 9 Pins Signal
1DCD 6DSR
2RXD 7RTS
3TXD 8CTS
4DTR 9NC
5GND
5. Female DB9 Pin Cable Wiring (EX-47925 to Device)

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RS-232 Isolator
6. Specifications
Type Specifications
Connectors
Number of Ports
RS232 Signals
Baud Rate
Power Requirement
Operating Temperature
Operating Humidity
Storage Temperature
DB9 Female (DCE), DB9 Male (DTE)
1 RS232
TXD, RXD, RTS, CTS, DTR, DSR, DCD,
GND
Up to 921.6Kbps
5V/100mA max.
0 to 608C (32 to 1408F)
5 to 95% RH
-20 to 85°C (-4 to 185°F)