Patton 1050 User Manual

USER
MANUAL

MODEL 1050

AC Powered, Asynchronous
Short Range Modem

CERTIFIED

An ISO-9001

Certified Company

Part #07M1050-B
Doc. #058031B
Revised 7/30/97

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

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1050 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 1050 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 1050 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 1050
does cause interference to radio or television reception, which can be
determined by disconnecting the RS-232 interface, the user is
encouraged to try to correct the interference by one or more 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).

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].

NOTE: 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 1050. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

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 Patton
Technical Support.

1

2

2.0 GENERAL INFORMATION

3.0 CONFIGURATION

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

• Asynchronous RS-232 Operation

• Data Rates to 38,400 bps

• Distances up to 7 miles (ll.2 km)

• Point-to-Point or Multipoint Operation

• Optical Isolation

• Loopback Tests

• Tri-State LED Indicators

• DCE/DTE switch selectable

• Carrier Selectable for “Constantly On” or “Controlled by RTS”

• Both RJ-11 and

Terminal Block Line Connectors

• Ultra-Compact Enclosure

• Externally Powered

2.2 DESCRIPTION

The Model 1050 may be configured for a wide variety of
asynchronous RS-232 applications. This section will tell you how to
access and set the internal DCE/DTE switch and the internal carrier
control strap. WAIT. Before attempting to re-configure the Model 1050,
check the Default Configuration Table (below) to see if the factory
settings are correct for your application.

DEFAULT 1050 CONFIGURATION TABLE

Switch (Strap) Factory Setting Result

DTE/DCE Switch DCE Model 1050 is set to connect to

DTE device (PC, Terminal, etc.)

Carrier Control Strap Pegs 1 & 2 Carrier is “Controlled by RTS”

3.1 ACCESSING THE MODEL 1050 PC BOARD (see Note 1)

To access the internal PC board, simply remove the two screws at
the rear of the unit and slide the PC board and rear panel out of the
case. Figure 1 (below) shows the location of the DCE/DTE switch and
the RTS strap on the PC board.

Carrier Control Strap

The Patton Model 1050 AC Powered Asynchronous Short Range
Modem is to our AC powered short haul line what the Model 1000 is to

our interface powered line–a basic short haul at a great price! And the
Model 1050 has the key features

you need: optical isolation, a local
loopback test mode, LED indicators and a DCE/DTE switch. The
Model 1050 supports asynchronous RS-232 data rates to 38.4 Kbps.
Distances of 7 miles (11.2 km) (@ 1200 bps) are attainable over two
24 AWG (.5mm) twisted pair.

Housed in an ultra-compact metal enclosure, the Model 1050 offers a
choice of line connections: both external RJ-11 jack and internal
terminal block are provided. On the RS-232 side, a female DB-25 is
standard. The Model 1050 is designed for point-to-point or multipoint
applications, and is also compatible with the Patton 1060 and 1226
short hauls.

3

123

DCE

Figure 1. Switch/Strap locations on Model 1050 PC board.

DCE/DTE Switch

DTE

4

3.2 SETTING THE DCE/DTE SWITCH

Correct setting of the DCE/DTE switch eliminates the need for RS­232 crossover cables. If the RS-232 device you are connecting to the
Model 1050 is a PC, terminal or host, or is wired like one, set the
DCE/DTE switch to "DCE". If the RS-232 device you are connecting to
the Model 1050 is a modem or multiplexer, or is wired like one, set the
DCE/DTE switch to "DTE".

3.3 SETTING THE CARRIER CONTROL STRAP (see Note 2)

The setting of the carrier control strap determines whether carrier
is “constantly on” or “controlled by RTS”. For “controlled by RTS”
position the strap on pegs 1 & 2. For “constantly on” position the strap
on pegs 2 & 3. Figure 2 (below) shows the two possible settings of the
carrier control strap.

4.0 INSTALLATION

The Model 1050 is easy to install. After configuring the unit
properly, you will need to connect the two twisted pairs and the RS-232
cable. Figure 2 (below) shows the rear panel location of the RJ-11 jack
and strain relief grommet (line connections), as well as the female DB­25 (RS-232 connection).

Powered Async. Short
Range Modem

Figure 3. Rear view of 1050 showing interface connectors

4.1 TWISTED PAIR WIRING OVERVIEW

Made In The USA

RS-232 Interface

LinePower

123 123 123

Figure 2 Model 1050 strap settings

NOTE 1: If you are connecting twisted pair to the Model 1050

using the internal terminal blocks, make the twisted pair
connection before
Section 4.1.1 for details on twisted pair connection.

NOTE 2: If you are using the Model 1050 in a multipoint
application, consult Section 4.2 for proper Master and Slave carrier
control settings.

re-inserting the PC board into the case. See

5

These short range modems are designed to work in
need one at each end of a 4-wire twisted pair circuit. The pairs must be
"dry" (unconditioned) metallic wire, 19 - 26 AWG. The smaller gauges
limit distance somewhat compared with larger gauges. When you have
completed wiring for your data circuit, the pin connections should be as
shown below:

XMT + RCV+
XMT - RCV ­GG
RCV - XMT ­RCV + XMT +

4.1.1 TWISTED PAIR CONNECTION USING TERMINAL BLOCKS

The Model 1050 terminal block is located on the PC board inside
the unit. To access the PC board, remove the two screws on the back
panel and slide the PC board out of the case. Connect the bare twisted
pair wires by first inserting them through the grommet on the back
panel, then stripping the ends and connecting the individual leads to
the terminal block. Be sure the end-to-end connections follow the
diagram above.

To Shield (Optional)

6

pairs

}
}

. You will

One Pair

One Pair

4.1.2 TWISTED PAIR CONNECTION USING RJ-11

4.2 WIRING FOR MULTIPOINT CIRCUITS

If your two-pair cable is terminated in an RJ-11 plug, you may use
the RJ-11 jack in the back of the Model 1050 to make the connection.
The RJ-11 jack on a Model 1050 series Short Range Modem is
prewired for a standard TELCO wiring environment. To be sure you
have the right wiring, use the diagram below as a guide.

RJ-1

1 SIGNAL

1 ---------------------GND

†

2 ---------------------RCV­3 ---------------------XMT+
4 ---------------------XMT­5 ---------------------RCV+
6 ---------------------GND

†

For proper signal crossing between two Model 1050s using RJ-11
connectors, pin-out the twisted pair cable according to the diagram
below.

RJ-11 Cable (4-Wire)

SIGNAL PIN# PIN# SIGNAL

GND

†

1-----------------------6 GND

†

RCV- 2-----------------------4 XMT­XMT+ 3-----------------------5 RCV+
XMT- 4-----------------------2 RCV­RCV+ 5-----------------------3 XMT+

†

GND

†

Connection to ground is optional

6-----------------------1 GND

†

The Model 1050 supports multi-point applications using either a
star or daisy chain topology. Both topologies require special wiring, as
well as specific carrier control strap settings for master and slave units.

4.2.1 DAISY CHAIN TOPOLOGY

Using a daisy chain topology, you may connect as many as 10
Model 1050s together in a master/slave arrangement. Maximum
distance between the units will vary based upon the number of drops,
data rate, wire gauge, etc. Call Patton Technical Support for specific
distance estimates.

Figure 3 (below) shows how to wire the two-pair cables properly for
a Model 1050 daisy chain topology. Note that the ground connection is
not needed.

HOST FIRST SLAVE OTHER SLAVE(S)

XMT+ RCV+ RCV+
XMT- RCV- RCV­RCV+ XMT+ XMT+
RCV- XMT- XMT-

Figure 3. Model 1060 daisy chain wiring

In a multipoint topology, you must configure the master Model
1050's carrier control strap differently than those of the slave Model
1050(s). Here are the proper carrier control strap settings for a daisy
chain topology:

Function

1
2
3
4
5
6

Master Carrier “Constantly ON” (pegs 2 & 3)
Slave(s) Carrier “Controlled by RTS” (pegs 1 & 2)

Carrier Control Strap Setting

7 8

4.2.2 STAR TOPOLOGY

Using a star topology, you may connect several Model 1050s
together in a master/slave arrangement. Maximum distance between
the units will vary based upon the number of drops, data rate, wire
gauge, etc. Call Patton Technical Support for specific distance
estimates.

5.0 OPERATION

Once you have configured each Model 1050 properly and
connected it, simply plug in the AC power adapter to get it running;
there is no power switch on the Model 1050. You can monitor the
operation of the Model 1050 using the front panel LED indicators and
built-in loopback test modes.

Figure 4 (below) shows how to wire the two-pair cables properly for
a Model 1050 star topology. Note that the ground connection is not
needed.

HOST FIRST SLAVE SECOND SLAVE

XMT+ RCV+

RCV+

XMT- RCV-

RCV-

RCV+ XMT+

XMT+

RCV- XMT-

XMT-

Figure 4. Model 1060 star wiring

In a multipoint topology, you must configure the master Model
1050's carrier control strap differently than those of the slave Model
1050(s). Here are the proper carrier control strap settings for a star
topology:

Function

Carrier Control Strap Setting

Master Carrier “Constantly ON” (pegs 2 & 3)

5.1 LED INDICATORS

The Model 1050 incorporates three front panel LEDs that show the

status of the modem:

1. The loopback test LED glows when the loopback test switch

has been depressed and is in a test mode.

2. The tri-state TD and RD indicators blink red and green with data
activity. Solid red indicates a low RS-232 logic level. Note: RS-232
devices idle in a low state, so the LED will glow red if the connections
are correct and the RS-232 device is in an idle state.

5.2 LOOPBACK TEST MODES

Select the test modes by depressing the "Loopback Test" switch.
When in loopback mode, the "Loopback Test" LED will glow red. Two
tests are possible using this switch: Local Analog Loop (LAL), and
Remote Analog Loop (RAL).

5.2.1 LOCAL ANALOG LOOP

The first test mode is Local Analog Loop (V.54 Loop 3). Any data
sent to the local Model 1050 in this mode will be echoed (returned)
back to the user device. For example, characters typed on the
keyboard of a terminal will appear on the terminal screen (see Figure 3
on the following page).

Slave(s) Carrier “Controlled by RTS” (pegs 1 & 2)

4.3 RS-232 CONNECTION

To connect the Model 1050 to a piece of data terminal or data

communications hardware, use a

straight through

RS-232 cable. Plug
the cable directly into the DB-25 port on the rear of the Model 1050.
The DCE/DTE switches eliminate the need for a crossover cable.

(continued)

109

5.2.2 REMOTE ANALOG LOOP

The second test mode is Remote Analog Loop. To enter this
mode, set one of the Model 1050s (local) in test mode by depressing
the "Loopback Test" switch. Any characters sent from the remote 1050
will be returned to it (see Figure 5). If no characters are echoed back,
check the wiring between the two Model 1050s. Be sure to wire the
units according to the instructions in Section 4.0 Installation.

APPENDIX A

PATTON MODEL 1050 SPECIFICATIONS

Transmission Format: Asynchronous
Transmission Line: 19 to 26 AWG twisted pair
Range: 7 miles on 24 AWG twisted pair @ 1200 bps

TD

RD

TD

RD

TX+
TX-

RX­RX+

Local 1060

In Normal Mode

TX+
TX-

RX­RX+

Local 1060

In Loopback Mode

Figure 5. Loopback Test Modes

RX+
RX-

TX­TX+

Remote 1060

In Normal Mode

RX+
RX-

TX­TX+

Remote 1060

In Normal Mode

RD

TD

RD

TD

Serial Interface: EIA RS-232 (CCITT V.24), DB-25 female
Twisted Pair Interface: Terminal blocks, RJ-11 jack
Data Rates: 0 - 38,400 bps
Applications: Point-to-point, Multipoint
Indicators: Tri-state for transmit data, receive data, and

test

Diagnostics: Local Analog Loopback (LAL), Remote

Analog Loopback (RAL)

Optical Isolation: 2500V RMS (minimum)
Power Supply: Wall mount, 9-12VAC, 200ma
Temperature Range: 0-60°C (32-140°F)
Altitude: 0-15,000 feet
Humidity: 5 to 95% noncondensing
Dimensions: 1.58”H x 4.16”W x 3.75”D
Weight: 13.2 oz. (without transformer)

11 12

APPENDIX B

APPENDIX C

PATTON MODEL 1050 CABLE RECOMMENDATIONS

All Patton Electronics Company Short Range Modems are tested to
the distances published in our Catalogs and Specification Sheets on
twisted-pair cable with the following characteristics:

ire Gauge Capacitance Resistance

W

19 AWG(.9mm) 83nF/mi or 15.72 pF/ft. .0163Ω/ft.
22 AWG(.6mm) 83nF/mi or 15.72 pF/ft. .0326Ω/ft.
24 AWG(.5mm) 83nF/mi or 15.72 pF/ft. .05165Ω/ft.
26 AWG(.4mm) 83nF/mi or 15.72 pF/ft. .08235Ω/ft.

We fully expect that the Short Range Modems will operate on lines
with specifications different from those tested, but to reduce the
potential difficulties in the field, one should ensure that the cable being
used has similar or better characteristics (lower capacitance or lower
resistance).

Wire with capacitance of 20pF/ft. or less is suitable for all our Short
Range Modems however, distances may vary from those published in
our catalog. Resistance will also affect distance but not functionality.
Wire should be 26 AWG (.4mm) (or larger (smaller AWG#).

Patton products are designed to withstand normal environmental
noise and conditions however, other environmental factors too
numerous to discuss in this format may affect proper operation of the
SRM’s.

Selection of the proper SRM for an application is critical to
maintaining Customer Satisfaction and should be taken seriously.
Certain models are better suited for particular applications and
environments than others.

PATTON MODEL 1050 INTERFACE PIN ASSIGNMENT

RS-232 FEMALE, D-SUB 25 CONNECTOR

(DCE ORIENTATION)

DIRECTION STANDARD RS-232C/V.24 “DCE” SETTING DIRECTION

1- (FG) Frame Ground
2- (TD) Transmit Data To 1050
3- (RD) Receive Data From 1050
4- (RTS) Request to Send To 1050
5- (CTS) Clear to Send From 1050
6- (DSR) Data Set Ready From 1050
7- (SG) Signal Ground
8- (DCD) Data Carrier Detect From 1050

DIRECTION STANDARD RS-232C/V.24 “DTE” SETTING DIRECTION

1- (FG) Frame Ground
2- (TD) Transmit Data From 1050
3- (RD) Receive Data To 1050
4- (RTS) Request to Send From 1050

From 1050 Data Term. Ready (DTR) - 20

7- (SG) Signal Ground
8- (DCD) Data Carrier Detect To 1050

13

14

APPENDIX D

PATTON MODEL 1050 BLOCK DIAGRAM

Dear Valued Customer,

Thank you for purchasing Patton Electronics products! We do

appreciate your business. I trust that you find this user manual helpful.

We manufacture one of the widest selections of data communications
products in the world including CSU/DSU's, network termination units,
powered and self-powered short range modems, fiber optic modems, interface
converters, baluns, electronic data switches, data-line surge protectors,
multiplexers, transceivers, hubs, print servers and much more. We produce
these products at our Gaithersburg, MD, USA, facility, and can custom
manufacture products for your unique needs.

We would like to hear from you. Please contact us in any of the
following ways to tell us how you like this product and how we can meet your
product needs today and in the future.

Web: http://www.patton.com

Sales E-mail: [e-mail]

Support E-mail: [e-mail]

Phone - Sales [phone]

Phone - Support [phone]

Fax: [phone]

Mail: Patton Electronics Company

7622 Rickenbacker Drive
Gaithersburg, MD 20879 USA

Copyright © 1997

Patton Electronics Company

All Rights Reserved

15

We are committed to a quality product at a quality price. Patton
Electronics is BABT and ISO 9001 certified. We meet and exceed the highest
standards in the industry (CE, UL, etc.).

It is our business to serve you. If you are not satisfied with any
aspect of this product or the service provided from Patton Electronics or its
distributors, please let us know.

Thank you.

Burton A.Patton
Vice President

P.S. Please tell us where you purchased this product:

_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________