Exsys EX-47200 Manual de usuario
1
Thank you for purchasing this RS232 to TTL/CMOS Converter. It is
designed for your PC, workstation, thin client, or server to
provide an instant conversion solution for the device that
needs RS232 interface in TTL or CMOS voltage level. It provides
a DB9 female connector (DCE, with standard RS232 signals, TXD, RXD,
RTS, CTS and GND) that can be connected directly to your PC’s
RS232 port. The product is powered by the RS232 signals so it does not
need any DC power from an external AC Power Adapter.
Features:
✓Provides one RS232 to TTL/CMOS Adaption
✓Supports 4-Signal RS232 Conversion: (TXD, RXD, RTS, CTS, GND)
✓Supports DB9 Female (DCE) to DB9 Male (TTL/COMS) Connector
Conversion
✓Supports 5V and 3.3V Tolerance Signals
✓Signal Levels are Inverted by the Converter Similar to Standard RS232 but
in TTL/CMOS Swing Level
✓Supports Baud Rate up to 115.2 Kbps
✓Port-powered, no External Power Required
✓No Driver Required for All Operating Systems
RS232 to TTL/CMOS Converter
Installation Guide
1. Introduction
2. Layout: RS232 to TTL/CMOS Converter
3. Installing the RS233 Isolator
Female DB9 RS232
(DCE)
TTL/CMOS
(5V/3.3V Tolerance)
RS232 to TTL/CMOS Converter
2
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 this Converter’s DB9 female connector, connect the
TTL/CMOS RS232 Device to the Converter’s DB9 male connector (with a
cable) .
DB9-Female Pin Assignment:
DB9(Male, Host PC) to DB9(Female, on this product) Wiring:
4. RS232 Female DB9 Pin Assignments and Wiring
RS232
Device
5 1
9 6
9 Pins Signal
1 NC
2 TXD
3 RXD
4 NC
5 GND
6 NC
7 CTS
8 RTS
9 NC
NC = No connection
RS232 to TTL/CMOS Converter
3
RS232
(DB9 female)
Signals
Signals
TTL/CMOS
(DB9 male)
3 (Input)
2 (Output)
7 (Input)
8 (Output)
5 (Signal GND)
RXD
TXD
CTS
RTS
GND
TXD-
RXD-
RTS-
CTS-
GND
3 (Output)
2 (Input)
7 (Output)
8 (Input)
5 (Signal GND)
DB9-Male Pin Assignment:
DB9(Male, this product) to DB9(Female, RS232 Device) Wiring:
DB9M(DTE,Host PC) DB9F(DCE, this product)
1 DCD 1 DCD
2 RXD 2 TXD
3 TXD 3 RXD
4 NC 4 NC
5 GND 5 GND
6 NC 6 NC
7 RTS 7 CTS
8 CTS 8 RTS
5. TTL/CMOS Male DB9 Pin Assignments and Wiring
1 5
6 9
9 Pins Signal
1 NC
2 RXD-
3 TXD-
4 NC
5 GND
6 NC
7 RTS-
8 CTS-
9 NC
DB9M(DTE, this product) DB9F(DCE, RS232 Device)
1 DCD 1 DCD
2 RXD 2 TXD
3 TXD 3 RXD
NC = No connection
RS232 to TTL/CMOS Converter
4
Type
Specifications
Connectors
Number of Ports
RS232 Signals
Baud Rate
Power Requirement
Operating Temperature
Operating Humidity
Storage Temperature
DB9 Female (DCE), DB9 Male (DTE, TTL/CMOS)
1 RS232
TXD, RXD, RTS, CTS, GND
Up to 921.6Kbps
5V/5mA max.
0 to 60C (32 to 140F)
5 to 95% RH
-20 to 85C (-4 to 185F)
Electrical Characteristics
Parameters
Values
TTL/CMOS Input
Low
High
< 0.8V
> 2.0V
TTL/CMOS Output
Low
High
< 0.55V
> 2.4V
RS232 Input
Low
High
< 0.2V
> 2.4V
RS232 Output
Low
High
< -5V
> +5V
6. Specifications
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