Patton 1225 USER MANUAL

USER
MANUAL

MODEL 1225

ParaLink
Short Range Modem

TM

Parallel

CERTIFIED

An ISO-9001

Certified Company

Part #07M1225-B
Doc. #104011UB
Revised 9/12/97

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

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1225 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 1225 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 1225 is 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 1225 does cause
interference to radio or television reception, which can be determined
by disconnecting the Model 1225 from both parallel interfaces, 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).

1.3 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 [phone]; http://www.patton.com: or,

[e-mail].

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 1225. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

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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2.0 GENERAL INFORMATION

3.0 CONFIGURATION

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

• Extends parallel communication to 2000 feet

• Requires no AC power or batteries

• Operates over a single twisted pair

• Allows devices to communicate in “real time”

• Can be configured for BUSY or ACKNOWLEDGE
flow control methods

• Compatible with most printer sharing devices

• Transmits DC power over the line to compensate for low power

parallel printer interfaces

• DB-25 or Centronics parallel connections

• RJ-11, RJ-45 or terminal block line connections

2.2 DESCRIPTION

TM

The Patton Electronics Model 1225 ParaLink

parallel short
range modem allows a PC and a parallel output device (printer, sharing
switch, etc.) to communicate at distances to 2000 feet over a single
unconditioned twisted pair. Supporting parallel data rates to 5 Kbytes
per second (serial rates to 40 Kbps), the Model 1225 derives all
necessary operating power from the parallel interface—no AC power or
batteries are required.

The Model 1225 always works in pairs: A

plugged into the PC parallel port and a

receiver

transmitter

unit is

unit is plugged into the
output device parallel port. The connection between them is serial, and
functions at speeds high enough to allow “real time” parallel
communication between the two parallel devices. The Model 1225 has
two unique features that allow it to operate in a wide variety of parallel
applications: First, the Model 1225 transmitter is able to send DC
power down the line to the receiver in order to compensate for low
power parallel printer interfaces. Second, the Model 1225 can be
configured for either BUSY or ACKNOWLEDGE flow control methods.

The Model 1225 receiver is available with either a DB-25 or
Centronics parallel interface (transmitter has DB-25 only). Line
connection options are RJ-11, RJ-45 or terminal block with strain relief.

The Model 1225 is designed to be easy to use. There are no
internal jumpers or DIP switches to set, so there is no need to open the
case to configure the unit (you may need to open the case for wire
connection—refer to Section 4.0).

The only configuration necessary for operation is proper setting of
the external BUSY / ACKNOWLEDGE switch. The diagram below
shows the location of the BUSY / ACKNOWLEDGE switch on the PC
board, as well as the location of the terminal block.

Ack

BUSY/

ACKNOWLEDGE

Switch

Busy

G S

Terminal

Block

3.1 SETTING THE BUSY / ACKNOWLEDGE SWITCH

For your convenience, the Model 1225 has an externally
accessible BUSY / ACKNOWLEDGE switch (see diagram below). Set
the switch on both transmitter and receiver as follows:

Busy

on both transmitter and

1. The switch must

Ack

be set

the same way

receiver.

2. Set the switch to ACKNOWLEDGE on both the transmitter and

reeiver. This should achieve good results in most applications.

3. If you experience loss of information or other problems with both

switches set to ACKNOWLEDGE, set both switches to BUSY.

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