Patton 1180 User Manual

USER

Part# 07M1180-B
Doc# 017071UB
Revised 1/5/96

MANUAL

MODEL 1180

Single Fiber
Short Range Modem

SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1180 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 1180 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 1180 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 1180
does cause interference to radio or television reception, which can be
determined by turning the power off, 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].

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

• Operates over a single optical fiber

• Synchronous or asynchronous operation

• Loopback diagnostics

• Asynchronous data rates to 38.4 Kbps

• Synchronous data rates to 256 kbps

• Distances to 5 Km

• Internal or external clocking

• Hardware and software flow control

• Tri-state front panel LEDs

• Available with ST or SMA connectors

2.2 DESCRIPTION

The Model 1180 Single Fiber Short Range Modem accomplishes

point-to-point RS-232 communication over a

single

optical fiber.
Supporting synchronous data rates to 256 Kbps, and asynchronous
data rates to 38.4 Kbps, the Model 1180 automatically adapts to
hardware or software flow control. Synchronous timing can be set for
internal or external clock.

The Model 1180 features extended data rate circuitry that allows for
single fiber distances between 2.5 and 5 Km. Optical fiber may be
connected to the Model 1180 using an ST or SMA type interface. The
Model 1180 encodes the electrical signal using 3B4B modulation. The
electrical signal is then converted to an optical signal and transmitted
using an 880 nm light emitting diode.

The Model 1180 features two test modes: local and remote
loopback. These loopback tests are activated via a front panel switch.
The local loopback test is used to evaluate the RS-232 to modem
connection. The remote loopback test is used to evaluate the condition
of the connection between the modems.

2

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 1180. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

Packages received without an

1

3.0 CONFIGURATION

1 2 3 4 5 6 7 8

ON

FRONT

REAR

1 2 3 4 5 6 7 8

ON

OFF

ON

3.1 DETAILED SWITCH SETTINGS

This section provides detailed information about the function of
each DIP switch and lists all possible settings. Use this section as
configuration guide for applications where the Model 1180’s default
would not provide correct results.

Switch 1: Reserved for Future Use

Switches 2 though 5: Data Rate (Sync. Mode)

Switches 2 through 5 determine two configuration parameters:
synchronous or asynchronous data rate and the mode of
synchronization (Sync. Mode) between two Model 1180s. The “Sync.
Mode” setting (active in both asynchronous and synchronous operating
modes) defines the packet length of the data stream between the two
Model 1180s.

Simply put, the “2X” setting doubles the space between data
packets when compared with the “1X” setting. A Sync. Mode setting of
“2X” facilitates communication distances up to 5 Km. A Sync. Mode
setting of “1X” limits communication distances to 2.5 Km. The following
table shows every possible data rate/Sync. Mode switch setting for the
Model 1180.

SWITCH SUMMARY TABLE

Position Function Factory Default

Switch 1 RESERVED Off
Switch 2 Data Rate (Sync Mode) On
Switch 3 Data Rate (Sync Mode) Off
Switch 4 Data Rate (Sync Mode) Off
Switch 5 Data Rate (Sync Mode) On
Switch 6 Reset Off

Operating Mode

Switch 7 Handshaking On

Control Signal Mode

Switch 8 Clocking Method Off Internal Clock

0 - 19.2

Async (2x)

}

Figure 1. Switch locations underneath Model 1180

Figure 2. Close up of 1180 DIP switch package showing OFF/ON positions.

Figure 3. Summary of switch settings, showing factory defaults

The Model 1180 uses a set of eight external DIP switches that
allow configuration to a wide range of applications. Because all eight
switches are in one externally accessible DIP package, there is no need
to open the Model 1180’s case for configuration. The switches allow
you to control data rates and clocking methods. Figures 1, 2 and 3
summarize the switch locations, positions and functions.

3 4