Patton Model 1080A Series Block Diagram............................ 32
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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 the shipment.
This warranty is limite d to defects in workmanship or mate rial s, a nd doe s
not cover customer damage, abuse or unauthorized modification. If this
product fails or does not performs as warranted, your sole recourse shall
be repair or replacement as described above. Under no condition shall
Patton Electronics be liable for any damage s incurr ed by the use of this
product. These da mages incl ude, b ut ar e not limit ed to, t he fol lowi ng: los t
profits, lost savings and incidental or consequential damages arising
from the use of or inability to use this product. Patton Electronics spe
cifically 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.
Note Conformity documents of all Patton products can be viewed
online at www.patton.com under the appropriate product page.
1.1 RADIO AND TV INTER FERENCE
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 Mode l 1080A Seri es has be en teste d and foun d
to comply with the limits for a Class A computing device in accordance
with specifications in Subpart B 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 deter
mined 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 dif
ferent AC outlet (such that the computing equipment and receiver are on
different br anches).
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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 Vo ltage Directive (LVD ) of the Euro pea n Unio n ( EU) . A Cer
tificate of Compliance is available by contacting Technical Support.
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1.3 SERVICE
All warranty and non-warranty repairs must be returned freight prepaid
and insured to Patton Electro nic s. All retu rns mus t hav e a Ret urn M ate ri
als Authorization number on the outside of the shipping container. This
number may be obtained from Patton Electronics Technical Services at:
•Tel: +1 (301) 975-1007
•Email: support@patton.com
• URL: http://www.patton.com
Note Packages received without an RMA number will not be
accepted.
Technical support is available from 8 AMto 5 PM EST (8:00 to 17:00 UTC-5), 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 ques tion s or prob lem s ar ise dur ing i nstal lat ion o r us e of this pr oduct, please do not hesitate to contact Patton Electronics Technical Support at (301) 975-1007.
2.1 FEATURES
• Synchronous or asynchronous operation
• Supports data rates up to 57.6 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 2wire (half duplex) or 4-wire (full or half duplex), in synchronous or asyn
chronous modes, over unconditioned telephone lines. The Model 1080A
supports bit rates up to 57.6 kbps. The 1080A operates 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 syn chronous data .
The Model 1080A Series has several features to enhance overall performance: automatic equalization, automatic gain control, anti-streaming
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.
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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.
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 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 applica
tions. These 24 DIP switches are grouped into three eight-switch 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 imped
ance. The drawings, text and tables on the following pages describe all
switch locations, positions and functions.
FRONT
ON
ON
12345678
ON
12345678
ON
12345678
OFF
REAR
Figure 1. Underside of Model 1080A Series, showing location of DIP switches
S1
S2
S3
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Each Model 1080 A Se ries SRM h as three sets of eight swit ch es, y iel ding
24 total DIP switches. The three sets will be referred to as S1, S2 and
S3. As
with respect to “ON” and “OFF” positions.
Figure 2 shows, the orientation of all DIP switches is the same
ON
12345678
Figure 2. Close-up of DIP switches showing “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
Table 1.
The setting for switch S1-7 determines whether the Model 1080A Series
is in asynchronous or synchronous operating mode.
S1-7Setting
OnAsynchronous
OffSynchronous
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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.
S1-8Setting
OffConstantly on
OnControlled 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 opera
tion.