Patton 1080A-64, 1080A User Manual

USER
MANUAL

MODEL 1080A and
MODEL 1080A-64

Universal Synchronous &
Asynchronous
Short Range Modems

Part #07M1080A-D
Doc. #072041UD
Revised 6/19/98

CERTIFIED

An ISO-9001

Certified Company

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

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1080A Series 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 1080A Series 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 1080A Series
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 1080A Series 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).

1.2 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.

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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:

tel: [phone];

email: [e-mail]; or,

www: http://www.patton.com.

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 1080A Series. 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 by Patton's qualified
technicians. 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 or asynchronous operation

• Model 1080A supports data rates up to 57.6 kbps

• Model 1080A-64 supports data rates up to 64 kbps

• Two-wire/half duplex or four-wire/full or half duplex

• V.52 & V.54 test modes

• Automatic equalization & gain control

• Anti-streaming timer

• Distances up to 20 miles (32 km)

• Point-to-point or multipoint

• Internal, external or received loopback clocking

• Hardware and software flow control support

• Built-in transformer isolation & high speed surge protection

• External AC power

• Bi-color LED indicators

• Detects broken or inferior cable by lighting error LED

2.2 DESCRIPTION

The Model 1080A Series Universal Short Range Modem

operates 2-wire (half duplex) or 4-wire (full or half duplex), in
synchronous or asynchronous modes, over unconditioned telephone
lines. The Model 1080A supports bit rates up to 57.6 kbps. The Model
1080A-64 supports rates up to 64 kbps. Both operate in synchronous
mode between the local and remote modems; when connected to an
asynchronous RS-232 device, the Model 1080A Series SRM converts
the asynchronous data to synchronous data.

The Model 1080A Series has several features to enhance overall
performance: automatic equalization, automatic gain control, anti­streaming timer, transformer isolation to guard against data loss due to
ground potential differences, and Silicon Avalanche Diode surge
protection to guard against data line transients.

The Model 1080A Series features V.52 compliant bit error rate
pattern tests and two V.54 test modes: local analog loopback and
remote digital loopback. The operator at the local end may test both
local and remote modems, plus the line, in the digital loopback mode.
Both RDL and LAL modes can be controlled by a manual switch or via
the V.24/RS-232 interface.

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3.0 CONFIGURATION OVERVIEW

The Model 1080A Series is fairly simple to install and is ruggedly
designed for excellent reliability: just set it and forget it. The following
instructions will help you set up and install the Model 1080A or 1080A­64 properly.

3.1 CONFIGURATION SWITCHES

The Model 1080A Series uses a unique set of 24 external mini DIP
switches that allow configuration to an extremely wide range of
applications. These 24 DIP switches are grouped into three eight­switch sets, and are externally accessible from the underside of the unit
(see Figure 1). Since all configuration DIP switches are externally
accessible, there is no need to open the case for configuration.

The configuration switches allow you to select data rates, clocking
methods, V.52 & V.54 tests, word lengths, extended signaling rates,
async. or sync. mode, 2- or 4-wire operation, anti-stream control and
input impedance. The drawings, text and tables on the following pages
describe all switch locations, positions and functions.

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FRONT

REAR

Figure 1. Underside of Model 1080A Series, showing location of DIP switches

S1

S2

S3

ON

OFF

ON

12345678

ON

12345678

ON

12345678

Each Model 1080A Series SRM has three sets of eight switches,
yielding 24 total DIP switches. The three sets will be referred to as S1,
S2 and S3. As Figure 2 shows, the orientation of all DIP switches is the
same with respect to “ON” and “OFF” positions.

3.2 CONFIGURATION SWITCH SET “S1”

The DIP switches on S1 set data rate, clock source, async./sync.
mode and carrier control method. The default settings are summarized
in the table below.

Switches S1-1 through S1-4: Data Rate Setting

Switches S1-1 through S1-4 are set in combination to determine
the asynchronous and synchronous data rate for the Model 1080A and
1080A-64.

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MODEL 1080A S1 SUMMARY TABLE

Position Function Factory Default

S1-1 Data Rate On
S1-2 Data Rate Off
S1-3 Data Rate Off
S1-4 Data Rate On
S1-5 Clock Source On
S1-6 Clock Source On
S1-7 Async./Sync. On Async.
S1-8 Carrier Control Off Constantly On

9,600 bps

(1080A)

or

16,000 bps

(1080A-64)

Internal

}

}

Figure 2. Close-up of DIP switches showing “ON” and “OFF” positions

12345678

ON

OFF

ON

Shown in the tables below are DIP Switch settings for Models

1080A and 1080A-64.

Switches S1-5 and S1-6: Clock Source

Switches S1-5 and S1-6 are set in combination to determine the

transmit clock source for the Model 1080A Series.

S1-5 S1-6 Setting

On On Internal transmit clock
Off On Receive recover clock
On Off External transmit clock

Switch S1-7: Asynchronous/Synchronous Mode

The setting for switch S1-7 determines whether the Model 1080A

Series is in asynchronous or synchronous operating mode.

S1-7 Setting

On Asynchronous
Off Synchronous

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S1-1 S1-2 S1-3 S1-4 Setting
Off On Off On 16 kbps
Off Off Off On 32 kbps
Off On On Off 64 kbps

DATA RATE SETTINGS - MODEL 1080A-64

S1-1 S1-2 S1-3 S1-4 Setting
On On On On 1.2 kbps
Off On On On 1.8 kbps
On Off On On 2.4 kbps
Off Off On On 3.6 kbps
On On Off On 4.8 kbps
Off On Off On 7.2 kbps
On Off Off On 9.6 kbps
Off Off Off On 14.4 kbps
On On On Off 19.2 kbps
Off On On Off 28.8 kbps
On On Off Off 38.4 kbps
Off On Off Off 57.6 kbps

MODEL 1080A DATA RATE SETTINGS

Switch S1-8: Carrier Control Method

The setting for switch S1-8 determines whether the carrier is
“constantly on” or “controlled by RTS”. This setting allows for operation
in switched carrier, multipoint and/or hardware handshaking
applications.

S1-8 Setting

Off Constantly on
On Controlled by RTS

3.3 CONFIGURATION SWITCH SET “S2”

The DIP switches on S2 set word length, extended signaling rate,
RTS/CTS delay, V.52 and V.54 diagnostic test and 2- and 4-wire
operation.

Switches S2-1 and S2-2: Word Length

Switches S2-1 and S2-2 are set in combination to determine the
word length for asynchronous data.

S2-1

S2-2 Setting
Off On 8 bits
On On 9 bits
Off Off 10 bits
On Off 11 bits

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S2 SUMMARY TABLE

Position Function Factory Default

S2-1 Word Length Off
S2-2 Word Length Off
S2-3

Extended Signaling Rate

Off -2.5% to 1%
S2-4 RTS/CTS Delay On
S2-5 RTS/CTS Delay On
S2-6 V.52/V.54 Tests Off

Normal Operation
S2-7 2-Wire/4-Wire Off (4-Wire)
S2-8 Not Used N/A

}

}

7 ms

10 bits

Switch S2-3: Extended Signaling Rate

The setting for switch S2-3 determines the range of variability the
Model 1080A Series “looks for” in asynchronous data rates (i.e., the
actual variance from a given frequency level the Model 1080A Series
will tolerate).

S2-3 Setting

Off -2.5% to +1%
On -2.5% to +2.3%

Switches S2-4 and S2-5: RTS/CTS Delay

The combined settings for switches S2-4 and S2-5 determine the
amount of delay between the time the unit “sees” RTS and when it
sends CTS. Options are no delay, 7 ms and 53 ms.

S2-4 S2-5 Setting

On On 7 ms
Off On 53 ms
On Off No delay
Off Off No delay

Switch S2-6: V.54 Loopback Test Enable

To reset the V.54 circuit, set switch S2-6 to the “ON” position, then
back to the “OFF” position.

S2-6 Setting

Off V.54 Normal Operation

On V.54 Testing Disabled

Switch S2-7: 2-Wire/4-Wire Mode Selection

The setting for switch S2-7 determines whether the Model 1080A
Series is operating in 2-wire or 4-wire mode.

S2-7 Setting

Off 4-wire (full or half duplex)

On 2-wire (half duplex only)

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