Patton 1226 User Manual

USER
MANUAL

MODEL 1226

Parallel Short
Range Modem

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

Part# 07M1226-B
Doc# 104031UB
Revised 08/13/99

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1226 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 1226 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 1226 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 1226 does cause
interference to radio or television reception, which can be determined
by disconnecting the parallel 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 1226. 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

• Extends parallel communication to 14 miles

• Data rates to 57.6 Kbps

• Operates over two shielded or unshielded twisted pair

• Allows devices to communicate in “real time”

• Acts as either a transmitter or a receiver

• Compatible with most printer sharing devices

• Compensates for low power parallel printer interfaces

• DB-25 parallel connections

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

• Surge protection and optical isolation

2.2 DESCRIPTION

The Patton Electronics Model 1226 parallel short range modem

allows a PC and a parallel output device (printer, sharing switch, etc.) to
communicate at distances to 14 miles over two shielded or unshielded
twisted pair. Externally powered, the Model 1226 supports serial data
rates to 57.6 Kbps, which is fast enough to allow “real time” parallel
communication. The Model 1226 features high speed Silicon
Avalanche Diode surge protection, which intercepts transient surges
and shunts them safely to chassis ground. Optical isolation gives the
Model 1226 immunity to ground loops that would otherwise hamper
between-building communications.

The Model 1226 always works in pairs: One unit is plugged into
the PC’s parallel port and a second unit is plugged into the output
device’s parallel port. Since the Model 1226 can act as either a
transmitter or a receiver unit, you do not have to purchase a special
“transmit” or “receive” unit. The Model 1226 can also be teamed up
with a Model 1060 for bi-directional parallel to serial transmission.

The Model 1226 receiver comes equipped with DB-25 parallel
interface. Line connection options are RJ-11, RJ-45 or terminal block.

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3.0 CONFIGURATION

The Model 1226 is simple to install, and is designed for excellent
reliability: just set it and forget it. The following instructions will help
you set up and install the Model 1226 properly. If you have any
questions, please call Patton Technical Support at [phone].

3.1 CONNECTING TWO MODEL 1226s

(Parallel to Parallel)

The Model 1226 uses a set of eight DIP switches (see Figure 1)
that allow configuration to a wide range of applications. Because all
eight switches are in one externally accessible DIP switch package,
there is no need to open the Model 1226's case for configuration. The
configuration switches allow you to select data rates, parity, word length
and flow control selection. The following section describes all switch
locations, positions and functions.

The Model 1226 uses a DIP switch package (see Figure 2). To
configure your unit, use a small screwdriver and gently push each
switch to its proper setting. The ON and OFF positions are shown in
Figures 1 and 2.

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3.1.1 DETAILED SWITCH SETTINGS

This section provides detailed information about the function of

each DIP switch and lists all possible settings.

Switches 1 through 3: Frequency and Data Rate

Switches 1 through 3 determine the data rate for the Model 1226.

Use the following chart to configure your equipment:

NOTE: Factory defaults are in

bold italics.

Switch 4 through 6: Data, Parity and Stop Bit

Switches 4 through 6 are used to specify the data, parity and stop

bits. The following table shows the settings that may be used:

NOTE: Factory defaults are in

bold italics.

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Figure 1. Underside of the Model 1226, showing location of DIP switches

Figure 2. Close-up of the Model 1226 configuration switch package

1200 ON OFF OFF
2400 ON OFF ON
4800 OFF ON ON
9600

ON ON OFF

19200 ON ON ON
38400 OFF OFF OFF
57600 OFF OFF ON

Data Rate SW1 SW2 SW3

FRONT

REAR

DIP Switches

7B EP 1S ON ON ON
7B OP 1S ON ON OFF
7B NP 2S ON OFF ON
7B EP 2S ON OFF OFF
7B OP 2S OFF ON ON
8B EP 1S OFF ON OFF
8B OP 1S OFF OFF ON
8B NP 1S

OFF OFF OFF

Stop

Data Parity Bit SW4 SW5 SW6