Patton electronics 1004ARC User Manual

USER
MANUAL

MODEL 1004ARC

High Speed, Multipoint
Short Range Modem:
Rack Mount Card

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

Part# 07M1004ARC-B
Doc# 047051UB
Revised 05/05/99

CERTIFIED

An ISO-9001

Certified Company

1 2

TABLE OF CONTENTS

Section Page

1.0 Warranty Information .............................................................2

1.1 Radio and TV Interference

1.2. CE Notice

1.3 Ser vice

2.0 General Information...............................................................4

2.1 Features

2.2 Descr iption

3.0 Configuration..........................................................................5

3.1 Front Card Configuration

3.1.1 Switch Setting - Modem A

3.1.2 Switch Setting - Modem B

3.2 Rear Card Configuration

3.2.1 Rear Card Strap Settings

4.0 Installation ...........................................................................14

4.1 The Model 1000R16 Rack Chassis

4.1.1 The Rack Power Supply

4.2 Installing the Model 1004ARC into the Chassis

4.3 RS-232 Connection

4.4 Twisted Pair Connection

4.4.1 Point-to Point Twisted Pair Connection

4.4.2 Multipoint Twisted Pair Connection

5.0 Operation.............................................................................19

5.1 LED Status Monitors

5.2 Power-Up

Appendix A - Specifications........................................................20

Appendix B - Cable Recommendations......................................21

Appendix C - Factory Replacement Parts..................................22

Appendix D - Interface Pin Assignments....................................23

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1004ARC 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 1004ARC 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 1004ARC 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 1004ARC
does cause interference to radio or television reception, which can be
determined by turning the power off or disconnecting the RS-232
interface, 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).
In the event the user detects intermittent or continuous product mal­function due to nearby high power transmitting radio frequency equip­ment, the user is strongly advised to take the following steps:use only
data cables with an external outer shield bonded to a metal or metal­ized connector; and, configure the rear card as shown in section 3.2.1
of this manual.

3 4

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
Support:

Tel: [phone]

Email: [e-mail].

www: http://www.patton.com

Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 1004ARC. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

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 during installation or
use of the 1004ARC, contact Patton Electronics Technical Support at
[phone].

2.1 FEATURES

• Convenient rack card features tw

o short range modems

• Data rates to 115.2 Kbps

• Supports up to 50 multipoint device drops in a polling environ­ment

• Passes transmit & receive data, one control signal each direction

• Var iable high/low impedance settings

• Carrier can be set as “constantly on” or “controlled by RTS”

• Able to operate with or without “echo”

• Features 6 easy-to-read LEDs

• Silicon Avalanche Diode surge protection

• Fits conveniently in Patton’s rack chassis

2.2 DESCRIPTION

The Model 1004ARC high speed, multipoint short range modem

rack card is a

dual

rack card incorporating two short range modems.
Both units support asynchronous data rates to 115.2 Kbps over 1 or 2
twisted pairs and support distances to 9.4 miles (19 AWG @19.2
kbps). The Model 1004ARC features 6 easy-to-read front panel LEDs
and incorporates Silicon Avalanche Diodes for protection against the
damaging effects of nearby lightning strikes and other harmful tran­sients.

The Model 1004ARC can handle up to 50 terminal drops in a mul­tipoint polling environment. For RS-485 and serial printer applications
requiring hardware handshaking, the Model 1004ARC passes one con­trol signal in each direction. The Model 1004ARC may be configured
for high or low impedance operation, carrier may be set to “constantly
on” or “controlled by RTS”, and the unit can operate with or without
“echo”. RTS/CTS delay may be set for “no delay”or 8 mS.

Filling one function card slot on Patton’s Model 1000R16 rack
chassis, the Model 1004ARC is available with RJ-11 or RJ-45 rear
interface cards. For workgroup and desktop communications, the
Model 1004ARC also fits in Patton’s 2, 4 and 8 slot ClusterBoxes™.
The combination of rack mount, ClusterBox™ and self-powered units
provides a completely integrated Model 1004A “networking”solution.

NOTE: Packages received without an RMA number will not be

accepted.

5 6

3.0 CONFIGURATION

This section describes the location and orientation of the Model
1004ARC's configuration switches, provides detailed instructions on
setting each switch and describes the settings for each of the rear con­nection cards.

3.1 FRONT CARD CONFIGURATION

The Model 1004ARC front card houses two short hauls–Modem A
and Modem B–

each

using two sets of DIP switches. The locations of
these switches are shown in Figure 1 (below). These switches are
accessible when the card is slid out of the rack chassis. Once config­ured, the Model 1004ARC is designed to operate transparently, without
need for frequent re-configuration.

Each of the DIP switches on the Model 1004ARC function card is
a 4-position switch. Figure 2 (below) shows the On/Off orientation of
these switches. Use a small screw driver or similar instrument to set
each individual switch.

3.1.1 SWITCH SETTINGS - MODEM “A”

DIP switches S1 and S2 configure short range Modem A on the
Model 1004ARC front card. The tables below provide an over view of
Modem A switch settings, including factory default settings. Following
the tables is a descriptions of each switch’s function.

SWITCH SET “S1”

DIP switch S1 is used to configure receive impedance,
RTS/CTS delay, carrier control operation and “echo” enable/disable.
The summary table below shows the factory default settings for switch
S1. Following the summary table is a detailed description of each indi­vidual switch.

S1-1: Receive Impedance

The setting for switch S1-1 selects the impedance of the input
receiver. You may select either a “low”impedance of 120 Ohms or a
“high” impedance of 16K Ohms. By selecting the proper impedance for
each drop, there may be up to 50 receivers in one application.

S1-1

Setting
On Low (120 Ohm)
Off High (16K Ohm typical)

S1-2: RTS/CTS Delay

The setting for switch S1-2 determines the amount of delay
between the time the Model 1004ARC “sees” RTS and when it sends
CTS. Note: RTS/CTS Delay setting should be based upon transmis­sion timing.

S1-2

Setting
On 8 msec
Off no delay

Figure 1. Model 1004ARC Card, showing location of configuration switches.

ON

OFF

Figure 2. Close-up of DIPswitches, showing ON/OFF orientation.

1234

ON

S2

S1

S3

S4

SWITCH S1 SUMMARY TABLE (factory defaults in bold)

Position Function ON Position OFF Position

S1-1 RX Impedance 120 Ohm 16K Ohm
S1-2 RTS/CTS Delay 8 msec No Delay
S1-3 Carrier Control RTS Controlled Constantly On
S1-4 Echo Mode Echo ON Echo OFF