|
CommFront offers
2 models of high-quality, industrial-grade, port or
external-powered
RS232 Repeater and RS485 / RS422 Repeater products. These plug-and-play
repeater products operate within a
wide temperature range (-40ºF
to 185ºF / -40ºC to 85ºC),
feature 600W surge protection and 15kV static protection. Whether
your environment is commercial or industrial, "clean" or "noisy"*, our
RS232
Repeater and RS485 / RS422 Repeater
products provide safe, easy, and cost-effective solutions for your
data-communication
applications.
* A "noisy" environment
is an area
surrounded by ground loops, transient surges
and spikes, which could potentially harm your expensive
equipment such as computers and data communication
devices.
The CommFront opto-isolated RS232 Repeater and
RS485 / RS422 Repeater products provide
simple and effective ways to protect your devices from such
potential harms. |
|
|
RS232 REPEATER / RS485
REPEATER / RS422 REPEATER
SELECTION TABLE
|
|
Part
Number |
Description |
Price |
|
RPT-232-3 |
RS232
Repeater
(Isolated/Industrial/Port-powered/300 to 28.8K Baud) |
$34.95
Order |
|
RPT-485_422-2 |
RS485/RS422
Repeater/Converter
(Industrial / External-powered / 300 to 115.2K Baud) |
$74.95
Order |
|
|
|
|
INTRODUCTION (RS232 REPEATER
/ RS232
EXTENDER / RS232 BOOSTER)
|
|
|
$49.95
Order Here |
|
The RPT-232-3 is an
industrial
grade (wide temperature range with surge & static
protection) port-powered optically isolated
RS232 Repeater /
RS232 Extender) (TX, RX, and GND), which works in pairs to extend
the full-duplex RS-232 distance up to 1.8 miles (3 km). This
product features opto-isolation circuitry, which effectively
protect your RS-232 devices from
ground
loops, transient surges and spikes.
The unit is powered from the
RS-232 data line, and therefore, no external power or RTS,
DTR is required.
data sheet |
FAQs |
| |
|
|
|
|
FEATURES (RS232 REPEATER
EXTENDER)
|
|
|
| - |
Industrial
grade with wide temperature range, surge and static protection. |
| - |
Port-powered, no external power or RTS, DTR required.
|
| - |
Extend full-duplex RS-232 data over long distance (300bps -> 1.8
miles or 3km; 1.2kbps -> 1.5 miles or 2.4km; 9.6kbps -> 0.75 miles
or 1.2km; 28.8kbps -> 1600 feet or 500m).
|
| - |
Current loop circuit provides better noise immunization.
|
| - |
Optical isolation protects your RS-232 devices from
ground loops,
transient surges and spikes. |
| - |
Optical isolation eliminates ground loop and noise problems. |
| - |
Plug
and play (hot-pluggable, data format auto-sensing and
self-adjusting). |
| - |
Built-in
surge
protection, static protection and circuit protection. |
| - |
Surface Mount
Technology manufactured to ISO-9001 standards. |
| - |
CE
certified. |
| - |
5-year
manufacturer's warranty. |
|
| |
|
|
SPECIFICATIONS (RS232 REPEATER
EXTENDER)
|
|
|
|
Part Number: |
RPT-232-3 |
|
Compatibility: |
EIA/TIA
RS-232C standard |
|
Power Source: |
Port power
from RS232 data line |
|
Current
Consumption: |
Less than
10mA |
|
Optical
Isolation: |
2500Vrms
(AC, 1 min) |
|
Baud
Rates: |
300
to 28,800bps (auto-sensing & self-adjusting) |
|
Distance: |
RS-232: 16ft
(5m);
Extended
Distance: 1.8 miles (3km) for 300bps baud, 1.5 miles (2.4km) for
1.2kbps baud, 0.75 miles (1.2km) for 9.6kbps baud, and 1600 ft
(500m) for 28.8kbps baud |
|
Connector: |
RS-232 Side:
DB-9 Female; Terminal Block Side: DB-9 Male;
Termination
Board: DB-9 Female and a 4-Way Terminal Block |
|
Surge protection: |
600W |
|
Static
protection (ESD): |
Up to 15KV |
|
Dimensions (H
x W x D): |
0.63 x 1.3
x 3.4 in (16 x 32 x 86 mm) (with termination board) |
|
Weight: |
0.83 oz
(23.5 g) |
|
Operating
Temperature: |
-40ºF to
185ºF (-40ºC to 85ºC) |
|
Operating
Humidity: |
Up to 90%
RH (no condensation) |
|
| |
|
|
REPEATER CONNECTOR / TERMINAL
BLOCK PINOUTS
|
|
|
|
|
RS232 Side |
|
Pin |
1 |
4 |
6 |
7 |
8 |
2 |
3 |
5 |
|
Signal |
DCD |
DSR |
DTR |
CTS |
RTS |
TX |
RX |
GND |
|
Function |
Tied |
Tied |
TX |
RX |
GND |
|
|
|
 Note:
Some software requires handshake line
acknowledgements. To satisfy the requirements, our
converter's handshake lines are tied together (DCD,
DTR, and DSR tied together, and RTS and CTS tied
together). Therefore, you don't have to modify your
existing software. |
|
|
DB-9
Female (view from front) |
|
|
|
Terminal Block Side |
|
Pin |
1 |
2 |
3 |
4 |
|
Terminal Block |
TX+ |
TX- |
RX+ |
RX- |
|
Function |
Transmit data |
Receive data |
|
|
|
|
|
 Note:
The RPT-232-3 comes with a 4-way terminal block for
easy wire connections. However, you may choose not
to use the terminal block provided and simply follow
the above table for pin assignments. |
|
|
|
DB-9 Male (view from front) /
Terminal Block |
| |
|
|
CONNECTIONS (RS232 REPEATER
EXTENDER)
|
|
|
 |
|
Figure 1:
RPT-232-3 Connection Diagram |
|
|
| |
TROUBLESHOOTING INSTRUCTIONS
FOR RS232 ISOLATED REPEATER
|
| |
|
| |
1) Port power measurement |
| |
 |
| |
Note: The port-powered
RS232 repeater (RPT-232-3) requires a -7 to -15VDC on the TX
line (Pin 3 on DTE or Pin 2 on DCE) of the RS232 port to
which the repeater is connected.
You can connect RPT-232-3 to a
DTE device which comes with a DB-9 Male connector; however,
if it is a DCE device, you will need to swap Pin 2 and 3
before connecting to the repeater. |
| |
|
| |
2) Loopback Test |
| |
 |
| |
-
Connect an RPT-232-3 to your PC's COM port and short TX
and RX (TX+ to RX+, TX- to RX-) on the terminal block
(as shown above).
-
Run 232Analyzer
FREE version software on your computer.
-
Select "ASCII" for both the Send and Receive data
formats. Then send command and/or string such as
"CommFront" from the 232Analyzer software. You should
receive an echo of the command/string sent
("CommFront"). By performing a simple loopback test like
this, you can test both the transmitter and receiver of
the repeater. This is very helpful when you are in doubt
about the performance of your repeater.
|
| |
Screenshot: Send/receive
commands from 232Analyzer software.
|
| |
|
| |
232Analyzer is an advanced RS232 Serial Protocol Analyzer
software
that allows you to control, monitor and analyze serial port
(RS232 / RS485 / RS422 / TTL, etc.) activities.
Not just the data,
it also allows you to monitor or change RS-232's line
states: RTS, CTS, DTR, DSR, DCD, and RI.
The FREE version (no time
limitation) can be downloaded from
here.
TECH NOTES
RS-232: 3 easy steps to understand and control
your RS232 devices |
| |
|
