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The fiber
optical converter allows the RS232 or RS422 input signals to be
converted to fiber optional signals that for long distance, high
speed, and high quality communication. There are 3 LED indicators
correspond to RxD, CTS, and power signals. A 9V, 500mA-power adapter
is provided in the package. To order the fiber optical converter,
please select one of RS232 or RS422 version, and select one of DTE or
DCE version for signal connection.
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| The
features of fiber optical converter are : |
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Provides RS232 or RS422 signals. |
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Provides DTE or DCE mode signals.
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One pair (two converters) is needed for two connected
devices.
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Communication distance up to 1500m.
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Fiber Optical Communication speed up to 5 Mbps.
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Operation temperature from 0C to 55C.
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ST type fiber optical connector. |
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Suitable for three different optical fibers size :
50/125um, 62.5/125um, 100/140um.
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Suitable for multi-mode cable.
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HFBR-2416 fiber optical receiver and HFBR-1414 fiber
optical transmitter are used.
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The
package contains:
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Two (or one) fiber optical converters.
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9V, 500mA power adapter.
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User's manual. |
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DB25 male to DB25
female calbe.
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Hardware Installation:
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Your fiber
optical converter is designed to be inserted in the RS232/RS422 port
of your computer, please follow the setps listed below.
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- Turn off all
power to your computer and all devices before installing your fiber
optecal converter.
- Connect fiber
optical converter to RS232/RS422 port.
- Plugs in power
adapter to fiber optical converter and connects it to remote site.
- Turn on the
computer and power adapter.
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Hardware
configuration:
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There are one female
connector and four fiber optical connectors in the box, the signal
assignments are shown below:
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1. Fiber optical connector
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| 2.
RS232 connector for DTE mode |
Pin #
|
DB25 Signal Name
|
RS232
Name
|
Signal Direction |
| 1 |
Chassis Ground |
(GND) |
AA |
Common
|
2
|
Transmit Data |
(TxD) |
BA
|
Output |
3
|
Receive Data |
(RxD) |
BB |
Input
|
4
|
Request to Send |
(RTS) |
CA |
Output |
5
|
Clear to Send |
(CTS) |
CB |
Input |
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3. RS232 connector
for DCE mode
|
Pin #
|
DB25 Signal Name
|
RS232
Name
|
Signal Direction |
| 1 |
Chassis Ground |
(GND) |
AA |
Common
|
2
|
Receive Data |
(RxD) |
BB
|
Input |
3
|
Transmit Data |
(TxD) |
BA |
Output
|
4
|
Clear to Send |
(CTS) |
CB |
Input |
5
|
Request to Send |
R |
CA |
Output |
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4.
RS422 connector for DTE mode
|
Pin #
|
DB25 Signal Name
|
Signal Direction |
2
|
Transmit Data |
(TxD+) |
Output |
3
|
Receive Data |
(RxD+) |
Input
|
4
|
Request to Send |
(RTS+) |
Output |
5
|
Clear to Send |
(CTS+)
|
Input |
14
|
Transmit Data |
(TxD-)
|
Output
|
15
|
Receive Data |
(RxD-)
|
Input
|
16
|
Request to Send |
(RTS-)
|
Outputt
|
17
|
Clear to Send |
(CTS-)
|
Input
|
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5.
RS422 connector for DCE mode
|
Pin #
|
DB25 Signal Name
|
Signal Direction |
2
|
Receive Data |
(RxD+) |
Input |
3
|
Transmit Data |
(TxD+) |
Output |
4
|
Clear to Send |
(CTS+) |
Input |
5
|
Request to Send |
(RTS+) |
Output |
14
|
Receive Data |
(RxD-) |
Input
|
15
|
Transmit Data |
(TxD-) |
Output
|
16
|
Clear to Send |
(CTS-) |
Inputt
|
17
|
Request to Send |
(RTS-) |
Output
|
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To use the fiber
optical converter, you mustt connect it with four fiber optical
cables, then connect both DB-25 connectors to PC or devices (we call
Device in the follow). Please note that, you must use DCE or DTE
mode correctly, otherwise it can not work. Suppose the Device is DTE
mode, you must set the converter to DCE, otherwise if the Device
is DCE mode, you must set the converter to DTE.
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In
the following, we will introduce how to set the hardware
configuration in different modes, and also show the signal flow of
both fiber optical converters. It is clearly that only connect
transmit signal to receive signal and connect request to send signal
to clear to send signal at one side.
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A. Both DTE modes
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TxD 2
|
-----
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1 RxD
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RxD 1
|
-----
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2 TxD
|
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Device
|
-----
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RTS 4
|
----- |
3 CTS
|
-----
|
Device
|
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CTS 3
|
----- |
4 RTS
|
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B. One DTE node and
one DCE mode
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TxD 2
|
-----
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1 RxD
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RxD 1
|
-----
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2 TxD
|
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Device
|
-----
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RTS 4
|
----- |
3 CTS
|
-----
|
Device
|
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CTS 3
|
----- |
4 RTS
|
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DTE mode
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DCE mode
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Fiber Optical Cables
|
DTE mode
|
DCE mode
|
Device side
|
Converter side
|
Converter side
|
Converter side
|
Device side
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C. Both DCE modes
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TxD 2
|
-----
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1 RxD
|
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RxD 1
|
-----
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2 TxD
|
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Device
|
-----
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RTS 4
|
----- |
3 CTS
|
-----
|
Device
|
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CTS 3
|
----- |
4 RTS
|
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DTE mode
|
DCE mode
|
Fiber Optical Cables
|
DCE mode
|
DTE mode
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Device side
|
Converter side
|
Converter side
|
Converter side
|
Device side
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| RS - 232 ( J1 , J2 ,
J3 , J4 ) |
 |
DCE
|
1 - 2 SHORT
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DTE
|
2 - 3 SHORT
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RS - 232 PIN ASSIGNMENT
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
20
|
GND
|
TX
|
RX
|
RTS
|
CTS
|
DSR
|
GND
|
DTR
|
DTR , DSR
|
JIO
1 - 2 SHORT
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| RS - 422 ( J6 ) |
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DCE
|
1 - 2 SHORT
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DTE
|
2 - 3 SHORT
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RS - 422 PIN ASSIGNMENT
|
1
|
2
|
3
|
4
|
5
|
7
|
14
|
15
|
16
|
17
|
GND
|
TX +
|
RX +
|
RTS +
|
CTS +
|
GND |
TX -
|
RX -
|
RTS -
|
CTS -
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