Patton 2020RC User Manual

USER
MANUAL

MODEL 2020RC

Miniature RS-232 to V.35
Interface Converter:
Rack Mount Card

SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
http://www.patton.com

An ISO-9001

Certified Company

Part# 07M2020RC-B
Doc# 077121U
Rev. C
Revised 1/22/08

,

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 2020RC components to be

free from defects, and will—at our option—repair or replace the product
should it fail within one year from the first date of shipment.

This warranty is limited to defects in workmanship or materials, and
does not cover customer damage, abuse or unauthorized modification.
If this product fails or does not perform as warranted, your sole
recourse shall be repair or replacement as described above. Under no
condition shall Patton Electronics be liable for any damages incurred
by the use of this product. These damages include, but are not limited
to, the following: lost profits, lost savings and incidental or
consequential damages arising from the use of or inability to use this
product. Patton Electronics specifically disclaims all other warranties,
expressed or implied, and the installation or use of this product shall be
deemed an acceptance of these terms by the user.

1.1 RADIO AND TV INTERFERENCE

The Model 2020RC generates and uses radio frequency energy,
and if not installed and used properly—that is, in strict accordance with
the manufacturer's instructions—may cause interference to radio and
television reception. The Model 2020RC has been tested and found to
comply with the limits for a Class A computing device in accordance
with the specifications in Subpart J of Part 15 of FCC rules, which are
designed to provide reasonable protection from such interference in a
commercial installation. However, there is no guarantee that
interference will not occur in a particular installation.

If the Model 2020RC does cause interference to radio or television
reception, which can be determined by turning the power off or
disconnecting the unit, the user is encouraged to try to correct the
interference by one of the following measures: moving the computing
equipment away from the receiver, re-orienting the receiving antenna,
and/or plugging the receiving equipment into a different AC outlet (such
that the computing equipment and receiver are on different branches).

If the user detects intermittent or continuous product malfunction
due to nearby high power transmitting radio frequency equipment, the
user is advised to use data cables with an external outer shield bonded
to a metal or metalized connector, and to configure the rear card as
shown in Section 3.2 of this manual.

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1.2 SERVICE

All warranty and non-warranty repairs must be returned freight
prepaid and insured to Patton Electronics. All returns must have a
Return Materials Authorization number on the outside of the shipping
container. This number may be obtained from Patton Electronics
Technical Service at [phone]; http://www.patton.com; or
[e-mail].

Packages received without an RMA number

will not be accepted.

Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 2020RC. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

1.3 CE NOTICE

The CE symbol on your Patton Electronics equipment indicates
that it is in compliance with the Electromagnetic Compatibility (EMC)
directive and the Low Voltage Directive (LVD) of the Union European
(EU). A Certificate of Compliance is available by contacting Technical
Support.

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2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is
warranted for One Year parts and labor. If any questions or problems
arise during installation or use of this product, please do not hesitate to
contact Patton Electronics Technical Support at [phone].

2.1 FEATURES

• Synchronous operation, full or half duplex

• Allows an RS-232 DCE

to communicate bi-directionally with a

V.35 DTE

• Allows an RS-232 DTE to communicate bi-directionally with a
V.35 DCE

• Data rates up to 384 kbps

• DCE/DTE strap selectable

• Front panel LED indicators monitor seven parameters

• Dual UD-26 Connectors on rear card

• Fits in Patton’s rack chassis and Cluster Boxes

• Made in the USA

2.2 DESCRIPTION

The Patton Model 2020RC Interface Converter Rack Card lets a

synchronous RS-232 device communicate bi-directionally with a
synchronous V.35 device. Operating full or half duplex, the Model
2020RC is protocol independent and supports data rates to 384 kbps.

An internal DCE/DTE strap allows the user to configure the Model
2020RC as "DCE to DTE" or "DTE to DCE". In most cases, this
eliminates the need for special crossover cables. The Model 2020RC
uses Patton’s mid-plane architecture and is equipped with dual UD-26
connectors on the rear interface card (adapter cables are available from
Patton Electronics).

The Model 2020RC is designed to mount in Patton’s 2U high 19”
rack chassis and 2/4/8 slot Cluster Boxes. Available power supplies
include 120/230V AC and 48/24/12V DC. The Model 2020RC is made
in the USA.

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3.0 CONFIGURATION

This section describes the location and orientation of the Model
2020RC's configuration straps, and details all possible settings. This
section also identifies factory default configuration settings.

3.1 FRONT CARD CONFIGURATION

The Model 2020RC installs between DTE devices such as terminals
and host computers, and DCE devices such as modems, multiplexers
and CSU/DSUs. Most often the DTE device will be RS-232, and the
DCE device will be V.35. Therefore, the default DCE/DTE setting for
the Model 2020RC is RS-232 DCE to V.35 DTE, based on how the
Model 2020RC "sees" its

own

orientation. For example, if the Model
2020RC sees its own RS-232 port as DCE, it will want to plug into an
RS-232 DTE device such as a terminal.

The DCE/DTE strap is located near the rear of the Model 2020RC
front card’s PC board (see Figure 1, below). The arrows on the strap,
and on the PC board itself, indicate the configuration of the Model
2020RC. For example, if the “DCE” arrows on the strap are pointing
toward the front of the card (with the “DTE” arrows pointing toward the
rear), then the Model 2020RC is wired so that the RS-232 port is a DCE
and the V.35 port is a DTE. You can confirm this by reading the “RS­232” and “V.35” arrows on the PC board.

To reverse the DCE/DTE orientation of the Model 2020RC, remove the
strap and rotate it 180

0

. Confirm the orientation by checking the arrows

on the strap and on the PC board.

Figure 1. Model 2020RC front card, showing location of the DCE/DTE strap.

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DCE/DTE strap

DTE

➨

➨

➨

➨

RS-232

V.35