Patton electronics 1025, 1025S User Manual

USER
MANUAL

MODEL 1025
and 1025S

Synchronous Short
Range Modem with
Clocking Options

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

Part #07M1025-C
Doc. #041012UC
Revised 4/20/98

CERTIFIED

An ISO-9001

Certified Company

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1025 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 1025 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 1025 has been tested and found to com­ply with the limits for a Class Acomputing 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 1025 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, re­orienting 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 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). ACertificate of Compliance is available by contacting Technical
Services.

1.3 SERVICE

All warranty and nonwarranty 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
Services at:

telephone: [phone]

email: [e-mail]

web address: http://www.patton.com

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
Patton Model 1025. Technical Service hours: 8AM to 5PM EST,

Monday through Friday.

3.0 CONFIGURATION

The Model 1025 provides six configuration switches which allow
selection of clocking method, RTS/CTS delay and data rate. This sec­tion describes switch locations and explains all possible switch config­urations.

3.1 SWITCH LOCATIONS

For your convenience, all configuration switches are located on a
SIP (single in-line package) mounted on the PC board. Figure 1
shows the location of the SIP with respect to other PC board compo­nents. For instructions on opening the Model 1025 case, see Section

4.1.2.

Figure 2 shows the orientation of the configuration switches,

including ON/OFF position.

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 data rates to 19.2 Kbps

• Internal, external or receive loopback clocking

• Transformer isolation guards against ground looping

• Range to 11 miles

• Operates full duplex over two unconditioned twisted pair

• Customized VLSI chip with separate filter for each data rate

• No AC power or batteries required

• Miniature size

• Silicon Avalanche Diode surge protection (Model 1025S)

2.2 DESCRIPTION

The Patton Electronics Model 1025 miniature, synchronous

short range modem uses the latest in VLSI technology to combine
high-quality data transmission with compact size. The Model 1025
does not require any AC power or batteries to operate, and communi­cates up to 11 miles in point-to-point environments. For maximum flex­ibility, the Model 1025 supports three clocking options: internal, exter­nal or receive loopback.

Providing full duplex transmission over two twisted pair, the Model
1025 accommodates seven switch selectable data rates from 1200 to
19,200 bps. The Model 1025’s custom VLSI chip uses a separate filter
for each data rate, rather than a single “compromise” filter.
Transformer isolation allows the Model 1025 to operate between build­ings without data disruption due to ground potential differences.

The Model 1025S is a surge protected version of the Model 1025,
incorporating Silicon Avalanche Diodes that provide 600 watts of pro­tection per wire.

PATTO N

PE068

XXXX

Control

Switches

Terminal

Block

Patton

VLSI chip

Isolating

Transformers

1 23456

ON

OFF

Figure 2. Close-up of configuration switches

Figure 1. Model 1025 PC board showing switches