Patton electronic 1140 User Manual

USER
MANUAL

MODEL 1140

Miniature Fiber Optic
Modem w/V.54
Diagnostics

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

Part# 07M1140-A
Doc# 018041UA
Revised 9/21/94

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1140 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 1140 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 1140 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 1140 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 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].

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 1140. 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

• Supports async. or sync. communication over dual optical fibers

• V.52 and V.54 diagnostics

• Data rates to 38.4 Kbps

• Range to 2 miles

• Immune to RFI/EMI noise, ground loops and transient surges

• Easily accessible Diagnostic & Configuration Switches

• Switch-selectable carrier control

• Requires no AC power or batteries

• Two easy-to-read status indicators

• Male or female DB-25 and SMA or ST connectors available

2.2 DESCRIPTION

The Patton Model 1140 miniature dual fiber optic modem brings
fiber to the desktop. Combining the inviolability of fiber with the trou­bleshooting capabilities of V.52 and V.54 diagnostics, the Model 1140
is the best choice for your most critical RS-232 links. The Model 1140
operates async. or sync., supports data rates to 38.4 Kbps and plugs
directly into a workstation’s RS-232 port.

Like all fiber optic modems, the Model 1140 is inherently immune
to RFI/EMI noise, ground loops and transient surges. The carrier may
be switch selected as either “Continuously On” or “Controlled by RTS”,
while an easily accessible DCE/DTE switch eliminates the need for
cumbersome RS-232 crossover cables. Two easy-to-read LED indica­tors monitor the Error and Test modes. Drawing all necessary power
from the RS-232 interface, the Model 1140 requires no AC power or
batteries to operate.

Measuring only 3.42” x 2.10” x .73”, the Model 1140 is able to fit
into tight installation spaces. On the RS-232 side, the Model 1140
comes equipped with either a male or female DB-25 connector; on the
fiber side, it is available with a choice of SMA or ST connectors.

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3.0 CONFIGURATION OV ERVIEW

The Model 1140 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 1140 properly. If you
have any questions, don't hesitate to call Patton's Technical Support
Hotline at [phone] (9-5 PM, EST).

3.1 CONFIGURATION SWITCHES

The Model 1140 uses a unique set of 16 external mini DIP switch­es that allow configuration to an extremely wide range of applications.
These 16 DIP switches are grouped in two eight-switch sets, and are
externally accessible from the underside of the Model 1140 (see Figure

1). Since all configuration DIP switches are externally accessible,

there is no need to open the Model 1140's 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. The drawings, text and tables on the following
pages describe all switch locations, positions and functions.

The Model 1140 has two sets of eight switches, yielding 16 total
DIP switches. The three sets will be referred to as S1 and S2. 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.

Figure 1. Model 1140 Configuration Switches External Position

3 4

Configuration

Switches

S1 S2

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

OFF

ON

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

Internal

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Figure 3. Summary of DIP switch default settings for set S1

ON

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OFF

OFF

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