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 (301) 975-1007.
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, 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.
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
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 1080A-
64 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 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 impedance. The drawings, text and tables on the following pages
describe all switch locations, positions and functions.
4
1
2
3
4
5
6
7
8
ON
1
2
3
4
5
6
7
8
ON
1
2
3
4
5
6
7
8
ON
FRONT
REAR
Figure 1. Underside of Model 1080A Series, showing location of DIP switches
S1
S2
S3
ON
OFF
