Patton 2017RC USER MANUAL

USER
MANUAL

MODEL 2017RC

Miniature RS-232 to 20mA
Current Loop Converter:
Dual Port Rack Mount Card

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

An ISO-9001

Certified Company

Part# 07M2017RC-B
Doc# 073062U, Rev. C
Revised 1/22/08

CERTIFIED

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 2017RC 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 2017RC 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 2017RC 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 2017RC 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 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.

1.3 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 2017RC. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

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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

• Bi-directional RS-232 to 20mA current loop conversion

• 2 Independent interface converters per card

• Full duplex, asynchronous transmission over two twisted pairs

• Switch selectable active/passive transmitter

• Optical Isolation and Surge Suppression

• Front Panel LED indicators for TD, RD and power

• Selectable receiver impedance

• Made in the USA

2.2 DESCRIPTION

The Patton Model 2017RC Interface Converter Rack Card is a

dual rack card that lets two asynchronous RS-232 devices
communicate bi-directionally with two asynchronous 20mA current loop
devices. Operating full duplex on both ports, the Model 2017RC
supports data rates to 115.2 kbps.

Internal active/passive switches allow the user to configure the
Model 2017RC with an active or passive transmitter. This unique
feature allows configuration to fit a wide variety of current loop
applications. The Model 2017RC uses Patton’s mid-plane architecture
and is equipped with dual RJ-45 connectors on the rear interface card
(adapter cables are available from Patton Electronics).

The Model 2017RC is designed to mount in Patton’s 2U high 19”
rack chassis and 2/4/8 slot Cluster Boxes. The combination of rack
mount, Cluster Box and interface powered units provides a completely
integrated “networking” solution. The Model 2017RC is made in the
USA.

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3.0 CONFIGURATION

This section describes the location and orientation of the Model
2017RC's configuration straps, and details all possible settings. This
section also identifies factory default configuration settings.

3.1 FRONT CARD CONFIGURATION

The Model 2017RC uses one switch and one jumper per port that
allow configuration to a wide range of asynchronous applications.
These switches and jumpers are accessible when the card is slid out of
the rack chassis. Figure 1 shows the switches and jumpers on the
position of the Model 2017RC PC board.

3.1.1 Active/Passive Configuration

In any closed current loop, the transmitter

or

the receiver acts as
the active current source, while the other of the two must be passive.
To configure the Model 2017RC active/passive modes, you must first
determine whether the transmitter should be active or passive.

The active/passive switches are used to control the mode of the
20mA transmitters. Each converter on the dual port card has one
switch. As Figure 2 shows, the switch controls the mode of the
transmitter.

The Model 2017RC receivers are always passive.

WARNING: Never connect two active devices together. Your
configurations must be "active to passive" or "passive to active".

Figure 1. Model 2017RC front card, showing location of the Switches and Jumpers

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Active/PassiveSwitch

- Port A

Active/PassiveSwitch

- Port B

JB1

JB2

1
2
3

1
2
3

N

L

N

L

The following table shows the factory default settings of switches

S1 and S3. Following the table are descriptions of each switch.

Switches S1 and S3: Transmitter Active/Passive Select

Slide switches S1 (TXA) and S3 (TXB) are used to set the port A
and port B transmitter modes of operation, respectively. When the
active mode of operation is selected, the Model 2017RC transmitter will
supply the 20mA loop current to the connected passive receiver. When
the passive mode of operation is selected, the Model 2017RC
transmitter must be connected to an active receiver.

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ACTIVE PASSIVE

TX

SWITCH SUMMARY TABLE

Position Function Factory Default

S1 Transmitter (A) Mode Select Active

S3 Transmitter (B) Mode Select Active

Figure 2. Orientation of transmitter active/passive switch

PORT A

DCE DTE