Patton 1090 User Manual

USER
MANUAL

MODEL 1090

High Speed Synchronous
Short Range Modem

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

Part# 07M1090-B
Doc# 032011UB
Revised 5/26/98

CERTIFIED

An ISO-9001

Certified Company

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

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.).

Please contact us and let us know how we may provide you with the
answers to your needs.

Thank you.

Burton A.Patton

Vice President

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

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1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1090 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 1090 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 1090 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 1090
does cause interference to radio or television reception, which can be
determined by removing power from the unit, 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).

1.2 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.

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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

telephone: [phone],

web address: http://www.patton.com;

email: [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 1090. 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

• Synchronous data rates of 48, 56, 64, 72, 80, 112, 128, 144
and 160 kbps

• Frequency Shift Key (FSK) modulation

• Full or half duplex operation over two twisted pair (4-wire)

• Point-to-point distances up to 11 miles (19 AWG @ 56 kbps)

• V.54 compliant local analog (LAL), remote digital (RDL) and local
digital loopback tests

• V.52 compliant Bit Error Rate (BER) test pattern generator

• Replaceable DTE-DCE QuickConnect™ interface modules

• V.52 compliant BER test pattern generator

• Internal, external or receive recovered clocking options

• Automatic equalization

• Made in the U.S.A.

2.2 DESCRIPTION
The Patton Model 1090 Synchronous Short Range Modem

is designed for point-to-point, high speed communication over 4-wires
(two twisted pair). Supporting switch-selectable data rates from 48 to
160 kbps, the Model 1090 is perfect for connecting two bridge/routers,
or for similar campus applications at distances up to 11 miles. The
Model 1090 incorporates built-in V.54 loopback tests, a V.52 BERT
pattern generator and seven front panel LED indicators. Data integrity
is enhanced by automatic equalization and gain control. The Model
1090 also incorporates transformer isolation and surge protection to
guard data and connected equipment against the hazards of ground
loops and transient surges. Clocking options include internal, external
and receive recover clock.

The Model 1090 is the first Patton product to feature replaceable DCE­DTE QuickConnect™ interface modules. Several different modules are
available (call Patton Sales for details). Line connection is made by RJ­45 jack. Internal AC power supply options include 120 or 230VAC
(switchable), 85-256VAC (universal) or 48VDC.

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3.0 CONFIGURATION

The Model 1090 is equipped with one set of eight DIP switches,
and one set of four DIP switches (all externally accessible). These DIP
switches allow configuration of clock source, carrier control, loopback
tests and data rate. This section describes switch locations and
explains all possible configurations.

3.1 EXTERNAL DIP SWITCH SETTINGS

The Model 1090’s DIP switches are located on the underside of
the unit (see Figure 1, below). Figure 2 (below), shows the orientation
of the switch set. All possible settings for the Model 1090’s DIP
switches are presented in the summary table and descriptions on the
following pages. If you have additional questions regarding
configuration, contact Patton Technical Support at [phone].

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Figure 2. Close Up of Configuration Switches

ON

1234

ON

12345678

ON

12345678

ON

1234

Figure 1. Underside of Model 1090 Wish External DIP Switch Locations

S1 S2

FRONT

REAR

S1

S2

SWITCH SET S1

The configuration switches on S1 set clock source, RTS/CTS
delay, carrier control, loopback tests. The default settings are
summarized in Figure 3 (above).

S1-1 and S1-2: Clock Source

Switches S1-1 and S1-2 are set in combination to determine the
source of timing for the Model 1090.

S1-1

S1-2 Setting
On On Internal
On Off Receive recover
Off On External transmit clock
Off Off Not a valid setting

NOTE: When an X.21 QuickConnect™ module is installed in

one or both base units, one base unit must be configured for
receive recover clock source. The particular application will
dictate which unit must be configured for receive recover clock

source.

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S1-3: RTS/CTS Delay

Switch S1-3 determines the amount of delay between the time RTS

is activated and the 1090 activates the CTS.

S1-3

Function
On Short delay (4-9 msec)
Off Long delay (33-71 msec)

S1-4: LDL Control

Switch S1-4 determines whether the front panel switch can activate

a Local Digital Loopback (LDL) diagnostic test.

S1-4

Function
On LDL Control Enabled
Off LDL Control Disabled

S1-5: Carrier Control

The setting for switch S1-5 determines whether the carrier is
“constantly on” or “controlled by RTS”. This setting allows for operation
in switched carrier or hardware handshaking applications.

S1-5

Setting
On Controlled by RTS
Off Constantly ON

S1-6: DTE Control of RDL

The setting for switch S1-6 determines whether DTE control of
remote-digital loopback test is enabled or disabled. If DTE control is
disabled, the RDL test can only be initiated by the front panel switch.

S1-6

Setting
On DTE control enabled
Off DTE control disabled

S1-7: DTE Control of LAL

The setting for switch S1-7 determines whether DTE control of
local analog loopback test is enabled or disabled. If DTE control is
disabled, the LAL test can only be initiated by the front panel switch.

S1-7

Setting
On DTE control enabled
Off DTE control disabled

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S1 SUMMARY TABLE

Position Function Factory Default

S1-1 Clock Source* On
S1-2 Clock Source* On
S1-3 RTS/CTS Delay On Short Delay
S1-4 LDL Control Off Disabled
S1-5 Carrier Control Off Constant
S1-6 DTE Control of RDL Off Disabled
S1-7 DTE Control of LAL Off Disabled
S1-8 V.54 Enable/Disable Off Enabled

*See Note in SWITCH SET S1 (Below) for X.21 Clock Sources

Figure 3. Summary of DIP Switch Default Settings for S1

}

Internal

S1-8: V.54 Enable / Disable

The setting for switch S1-8 determines whether the Model 1090 will
respond when it receives the V.54 sequence. If you suspect the Model
1090 may be getting tricked into the loopback test by false detection of
user data, you can try setting this to “Disable.”

S1-8

Setting
On Disabled
Off Enabled

SWITCH SET S2

The settings for DIP switches S2-1 through S2-4 determine the
synchronous data rate of the Model 1090. All possible settings
(including the default) are shown below:

S2-1 S2-2 S2-3 S2-4 Setting

Off Off Off On 48 kbps
Off Off On Off 56 kbps
Off Off On On *64 kbps
Off On Off Off 72 kbps
Off On Off On 80 kbps
Off On On Off 112 kbps
Off On On On 128 kbps
On Off Off Off 144 kbps
On Off Off On 160 kbps

* Default Setting

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4.0 INSTALLATION

Once the Model 1090 is properly configured, it is ready to connect
to the twisted pair interface, to the serial port, and to the power source.
This section tells you how to make these connections.

4.1 CONNECTION TO THE TWISTED PAIR INTERFACE

The Model 1090 supports communication between two terminal
devices at distances to 11 miles and data rates to 160 kbps. There are
two essential requirements for installing the Model 1090:

1. These units work in pairs. Therefore, you must have one
Model 1090 (or a compatible model) at each end of a two
twisted pair interface.

2. To function properly, the Model 1090 needs two twisted pairs
of metallic wire. These twisted pairs must be
unconditioned, dry, metallic wire, between 19 and 26 AWG
(the higher number gauges may limit distance somewhat).
Standard dial-equalization equipment, or standard, flat
modular telephone type cable, are not acceptable.

4.1.1 TWISTED PAIR CONNECTION USING RJ-45

The Model 1090 uses a modular RJ-45 jack for twisted pair line
connection. The signal/pin relationships are shown below:

RJ-45 SIGNAL

1..........................XMT+

2..........................XMT-

3..........................N/C

4..........................GND*

5..........................GND*

6..........................N/C

7..........................RCV+

8..........................RCV-

*Connection to ground is optional

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