Pelco RS-422 User Manual

C1919M-D (3/02)
PV130 RS-232/422 Converter Kit
Installation Instructions

®

3500 Pelco Way,
Clovis, CA 93612-5699
USA

In North America & Canada:
Tel [phone]
FAX [phone]
DataFAX [phone]

International Customers:
Tel [phone]
FAX [phone]
DataFAX [phone]

PelcoEurope BV
Dillenburg Center
Dillenburgstraat 5F
5652 AM Eindhoven
The Netherlands
Tel [phone]
FAX [phone]

Pelco Online
www.pelco.com

DESCRIPTION

The PV130 RS-232/422 Converter Kit provides a bi-directional electrical interface between RS­232 and RS-422 data ports. This allows any application that requires an RS-232 device to con­nect to an RS-422 or RS-485 port on Pelco products. RS-422 and R-485 ports are found on
Pelco switchers, multiplexers, keyboards, and camera control receivers.

For example, you can connect a PelcoNet transmitter/receiver to a Spectra II, KBD300, Genex
Multiplexer, or CM9760-CC1 using a PV130.

The power supply allows the PV130 to communicate serial port data over wire pairs for dis­tances up to 4,000 feet (1,219 m) on the RS-422 side.

You must supply all necessary cables between the converter and the receivers.

INSTALLATION

Package Contents:

• RS-232/422 Converter

• 12 VDC Power Supply, 1.2W

Control Connections

1. Connect the 9-pin DB9 side of the converter to the COM port on the receiver or transmitter.

2. Wire the receiver’s RX- and RX+ terminals to the converter’s TX- and TX+ terminals. Use a
120-ohm resistor, if necessary, to terminate the line at the receiver’s RX- and RX+ terminals.

NOTE:

Proper operation of an RS-422 circuit requires that the active devices at both
ends of the communications facility be referenced to a common ground, such as earth. If
the ground is established through a metallic conductor, we recommend that 100-ohm resis­tors be placed in series with the ground connection at each end (refer to Figure 2). This
limits any currents that can be caused by other ground paths.

Connecting the Power Supply

1. Connect the black/white stripe wire to the converter’s +12 VDC terminal and the solid black

wire to the GND terminal.

2. Plug the power supply into a 115 VAC wall outlet or power strip.

+12 VDC

*12 VDC POWER SUPPLY

GND

RX +
RX -

FEMALE DB9 TO

TRANSMITTER

COM 2 PORT

*IF NECESSARY

PV130 CONVERTER

RX+

GND

+12 VDC

TO RECEIVER(S)

TX-

TX+

RX-

Figure 1. Connection Diagram

TROUBLESHOOTING

Why is there no control?

•Transmitter DIP switch settings or programming incorrect for receiver type

•Transmitter COM 2 port baud rate and/or parity programming incompatible with receiver type

• Converter-to-receiver twisted pair connections reversed or wired incorrectly

• Power supply +12 VDC and GND connections to converter reversed

Why is the control erratic?

• Cabling between converter and receiver incompatible with RS-422 operation

• Wire distance between converter and receiver requires suitable termination at receiver

• Wire distance between converter and receiver exceeds 4,000 feet

•Video coax cable has Coaxitron‚ or other “up-the-coax” control information present

PV130

TX-

TX+

RX-

RX+

GND

WARRANTY AND RETURN INFORMATION

WARRANTY

Pelco will repair or replace, without charge, any merchandise proved defective in
material or workmanship for a period of one year after the date of shipment. Ex­ceptions to this warranty are as noted below:

• Five years on Pelco manufactured cameras (CC3500/CC3600/CC3700 and
MC3500/MC3600/MC3700 Series); two years on all other cameras.

• Three years on Genex® Series (multiplexers, server, and keyboard).

•Two years on cameras and all standard motorized or fixed focal length lenses.

•Two years on Legacy®, Camclosure™ Camera Systems, CM6700/CM6800/
CM8500/CM9500/CM9740/CM9760 Matrix, DF5 and DF8 Series Fixed Dome
products.

•Two years on Spectra®, Esprit™, and PS20 Scanners, including when used in
continuous motion applications.

•Two years on WW5700 series window wiper (excluding wiper blades).

• Eighteen months on DX Series digital video recorders.

• One year (except video heads) on video cassette recorders (VCRs). Video heads
will be covered for a period of six months.

• Six months on all pan and tilts, scanners or preset lenses used in continuous
motion applications (that is, preset scan, tour and auto scan modes).

Pelco will warrant all replacement parts and repairs for 90 days from the date of
Pelco shipment. All goods requiring warranty repair shall be sent freight prepaid
to Pelco, Clovis, California. Repairs made necessary by reason of misuse,
alteration, normal wear, or accident are not covered under this warranty.

Pelco assumes no risk and shall be subject to no liability for damages or loss
resulting from the specific use or application made of the Products. Pelco’s liability
for any claim, whether based on breach of contract, negligence, infringement of
any rights of any party or product liability, relating to the Products shall not exceed
the price paid by the Dealer to Pelco for such Products. In no event will Pelco be
liable for any special, incidental or consequential damages (including loss of use,
loss of profit and claims of third parties) however caused, whether by the negligence
of Pelco or otherwise.

The above warranty provides the Dealer with specific legal rights. The Dealer may
also have additional rights, which are subject to variation from state to state.

RS-422

100 100

Figure 2. RS-422 Circuit Wiring Diagram

If a warranty repair is required, the Dealer must contact Pelco at [phone]
or [phone] to obtain a Repair Authorization number (RA), and provide the
following information:

1. Model and serial number

2. Date of shipment, P.O. number, Sales Order number, or Pelco invoice number

3. Details of the defect or problem
If there is a dispute regarding the warranty of a product which does not fall under

the warranty conditions stated above, please include a written explanation with
the product when returned.

Method of return shipment shall be the same or equal to the method by which the
item was received by Pelco.

RETURNS

In order to expedite parts returned to the factory for repair or credit, please call
the factory at [phone] or [phone] to obtain an authorization num­ber (CA number if returned for credit, and RA number if returned for repair).

All merchandise returned for credit may be subject to a 20% restocking and
refurbishing charge.

Goods returned for repair or credit should be clearly identified with the assigned
CA or RA number and freight should be prepaid. Ship to the appropriate address
below.

If you are located within the continental U.S., Alaska, Hawaii or Puerto Rico:

Service Department
Pelco
3500 Pelco Way
Clovis, CA 93612-5699

If you are located outside the continental U.S., Alaska, Hawaii or Puerto Rico:

Intermediate Consignee Ultimate Consignee

American Overseas Air Freight Pelco
320 Beach Road 3500 Pelco Way
Burlingame, CA 94010 Clovis, CA 93612-5699
USA USA

RX-

RX+

TX-

TX+

GND

REVISION HISTORY

Manual # Date Comments

C1919M 9/97 Original version.
C1919M-A 3/00 Revised installation instructions and Figure 1. Added Figure 2.
C1919M-B 7/00 Corrected RX polarity in Figure 1.
C1919M-C 11/00 Revised drawings to reflect label change.
C1919M-D 3/02 Removed PelcoVision application information. Added information on using other products with the converter.

® Pelco, the Pelco logo, Spectra, Genex, Legacy , Coaxitron, and PelcoVision are registered trademarks of Pelco. © Copyright 2000, Pelco.
™ Esprit and Camclosure are trademarks of Pelco. All rights reserved.