Patton electronics 2025 User Manual

USER
MANUAL

MODEL 2025

Parallel to Serial/
Serial to Parallel
Interface Converter

Part # 07M2025-B
Doc. #102041U,

Rev. C

Revised 1/23/08

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

CERTIFIED

An ISO-9001

Certified Company

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 Support: [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 2025. Technical Support hours: 8AM to 5PM EST, Monday

through Friday.

2

3.0 CONFIGURATION

The Model 2025 is simple to install and designed for excellent
reliability: just set it and forget it. The following instructions will help
you set up and install the converters properly. If you have any
questions, please call Patton Technical Support at [phone].

3.1 CONFIGURATION SWITCHES

The Model 2025 uses a set of eight external 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 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 2025 uses a

miniature

configuration 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 Figure 2. Default settings for the DIP switches
are shown in the table on the following page. Detailed settings follow
the table.

4

Figure 1. The location of the configuration switches

Figure 2. The miniature configuration switch package

OFF

12345678

DHS-8

Configuration

Switch

Switch 3 through 5: Data, Parity and Stop Bit

Switches 3 through 5 are used to specify the data, parity and stop

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

Switches 6 through 8: Frequency and Data Rate

Switches 6 through 8 determine the frequency and data rate. The

following chart shows the settings that may be used.

6

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

Stop

Data Parity Bit SW3 SW4 SW5

300 OFF OFF ON

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

19200 ON OFF OFF
38400 OFF ON OFF

Model 2025

Data Rate SW6 SW7 SW8

5.0 OPERATION

Once your interface converter is properly configured and installed,
it should operate transparently—as if it were a standard cable
connection. Operating power is derived from the RS-232 data and
control signals; there is no “ON/OFF” switch.

5.1 LED STATUS MONITORS

The Model 2025 features an easy-to-read status LED that glows
red to indicate the condition of the transmission line. Figure 1 shows
the location of the LED. The following chart describes the LED's
various functions.

The red LED indicator blinks to show data activity. Since there is
only one indicator, it uses different LED codes to demonstrate various
messages. The following chart describes these codes:

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LED Codes

● ● — ● ——— ● ● — ● ——— Computer is sending data

● ——— ● ——— ● ——— Serial device is connected; computer is

not sending data

● ● ——— ● ● ——— Both serial and parallel devices are

connected; computer not sending
data

● — ● ——— ● — ● ——— Printer not ready, data held in buffer

● ● ● ● ———● ● ● ● Computer ignoring flow control, data lost

Key:

● Blink

— Short pause
——— Long pause

APPENDIX B

PATTON MODEL 2025 INTERFACE CONNECTIONS

36 PIN CENTRONICS PARALLEL PORT CONNECTIONS

Pin Description Direction

1 Strobe Output
2 Data bit 0
3 Data bit 1
4 Data bit 2
5 Data bit 3
6 Data bit 4
7 Data bit 5
8 Data bit 6
9 Data bit 7

10 Acknowledge Input (active low)

11 Busy Input (active high)
12 Paper end
13 Select
18 +5 volts
32 Error

(16, 17, 19, 20, 21, 22, 23, 24,

25, 26, 27, 28, 29, 30, 33, 36)

Note: All other pins are unconnected

DB-25 SERIAL PORT CONNECTIONS

Pin Name Description

1 FG Connected to pin 7 with optional jumper
2 TXD Serial Transmit Data; also used as a

power source

3 RXD Serial Receive Data; also used as a power

source
4 RTS Request to Send; also used as a power source
5 CTS Clear to Send; also used as a power source
6 DSR Data Set Ready; also used as a power source
7 SG Signal Ground

8 DCD Carrier Detect; also used as a power source
9 +V in Used as a power source

20 DTR Data Terminal Ready; also used as a power

source

Note: All other pins are unconnected

10

}

I/O

}

Ground

Dear Valued Customer,

Thank you for purchasing Patton Electronics products! We do

appreciate your business. I trust that you find this user manual helpful.

We manufacture one of the widest selections of data
communications products in the world including CSU/DSU's, network
termination units, powered and self-powered short range modems, fiber optic
modems, interface converters, baluns, electronic data switches, data-line surge
protectors, multiplexers, transceivers, hubs, print servers and much more. We
produce these products at our Gaithersburg, MD, USA, facility, and can
custom manufacture products for your unique needs.

We would like to hear from you. Please contact us in any of the
following ways to tell us how you like this product and how we can meet your
product needs today and in the future.

Web: http://www.patton.com

Sales E-mail: [e-mail]

Support E-mail: [e-mail]

Phone - Sales [phone]

Phone - Support [phone]

Fax: [phone]

Mail: Patton Electronics Company

7622 Rickenbacker Drive
Gaithersburg, MD 20879 USA

We are committed to a quality product at a quality price. Patton
Electronics is ISO 9001 certified. We meet and exceed the highest
standards in the industry (CE, UL, etc.).

It is our business to serve you. If you are not satisfied with any
aspect of this product or the service provided from Patton Electronics or its
distributors, please let us know.

Thank you.

Burton A.Patton

Vice President

P.S. Please tell us where you purchased this product.

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