ATen SXP325A Bedienungsanleitung

ATen Kabel für PCs und Peripheriegeräte SXP325A

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This package contains:

•1 Bidirectional Serial/Parallel Converter (SXP-320A or SXP-325A)

•1 AC 9V 200mA Power Adapter

•1 User Manual

Read this guide thoroughly and follow the installation and operation

procedures carefully to prevent any damage to the hub and/or any of the

devices it connects to.

All brand names and trademarks are the registered property of their respective owners.

USER'S MANUAL

Table of Contents

Overview

Features

Installation

Default Conﬁguration

DIP Switch Settings

Cabling

Operation

Appendix

Troubleshooting

Speciﬁcations

RS-232C Interface Speciﬁcation

Centronics Interface Speciﬁcation

Centronics Interface Timing Chart

Preventing Radio & TV Interference

Overview

The SXP-320A / SXP-325A are interface converters that

allow Centronics and RS-232 devices to communicate

with each other (a computer with an RS-232 output to a

Centronics printer, for example).

Both units are bidirectional enabling you to convert from

serial to parallel or parallel to serial. The primary diﬀerence

between them is that the SXP-325A is conﬁgured with 512

KB of memory allowing it to serve as a printer buﬀer,

whereas the SXP-320A has no memory.

These two way converters provide a DB-25 RS-232C (DCE)

compatible connector, and a C-36 Centronics connector.

The serial baud rate is from 1200 to 115200 bps. (selectable

by DIP Switch). The parallel interface speed for the (non-

buﬀered) SXP-320A is 11.52 KB/sec; for the (buﬀered) SXP-

325A, it is 1.5 MB/sec.

The units support both hardware and software (XON/XOFF)

handshaking. Setup is extremely easy. All that is involved

is setting the DIP Switch and connecting the cables.

Front View

Rear View

Features

• DIP Switch Sets Data Direction

• Built In Buﬀer for Eﬃcient Operation (SXP-325A)

• Both Hardware and XON/XOFF Handshaking

• Easy Installation

• Compact Size

Installation

Switch Conﬁguration Overview:

The SXP-320A/325A is conﬁgured by setting an eight

segment DIP Switch as follows:

An explanation of each DIP Switch setting is given below.

Note: 1. When the segment is set in the direction of the

arrow, it is ON.

2. In each table, the default setting is highlighted

Conversion Direction:

Cabling

Serial to Parallel:

When performing a Serial to Parallel interface conversion:

1. Plug the female end of a 25/9-pin to 25/9-pin

male/female serial cable into the PC's serial port

2. Plug the male end of the 25-pin to 25-pin male/female

serial cable into the SXP-320A/SXP-325A's serial

connector

3. Plug the female end of a C-36 to C-36 male/female

printer cable into the SXP-320A/SXP-325A's printer

connector

4. Plug the male end of the C-36 to C-36 male/female

printer cable into the printer.

If your serial cable is long enough, you can plug Note:

the SXP-320A/SXP-325A directly into the printer,

without the need for a printer cable.

5. Plug the Power Adapter into an AC source; plug the

Power Adapter cable into the SXP-320A/SXP-325A's

power jack.

Setting the Switches

Baud Rate:

The baud rate is set with DIP Switch segments 1 - 3, as

shown in the table, below

Handshake:

Data and Stop Bits:

Parity:

Parallel to Serial:

When performing a Parallel to Serial interface conversion:

1. Plug the male end of a 25-pin (male) to C-36 (female)

printer cable into the PC's parallel port

2. Plug the female end of the 25-pin to C-36 male/female

printer cable into the SXP-320A/SXP-325A's Centronics

connector

3. Plug the male end of a 25-pin to 25-pin male/female

serial cable into the SXP-320A/SXP-325A's serial

connector

4. Plug the female end of the 25-pin to 25-pin male/female

serial cable into the printer's serial port

5. Plug the Power Adapter into an AC source; plug the

Power Adapter cable into the SXP-320A/SXP-325A's

power jack.

Switch Purpose

1 

2  Baud rate setting

3

4 Handshake setting

5 Data and Stop Bits setting

6  Parity setting

7

8 Conversion Direction setting

DIP Switch Segment Baud Rate

  (bits per second)

1 2 3

ON ON ON 1200

ON ON OFF 2400

ON OFF ON 9600

ON OFF OFF 14400

OFF ON ON 19200

OFF ON OFF 38400

OFF OFF ON 57600

OFF OFF OFF 115200

DIP Switch Segment Handshake

4

ON XON/XOFF

OFF Hardware

DIP Switch Segment Data Bits Stop Bits

5

ON 7 2

OFF 8 1

DIP Switch Segment Parity

6 7

ON Either Parity Inhibit

OFF ON Even Parity

OFF OFF Odd Parity

DIP Switch Segment Conversion Direction

8

ON Parallel to Serial

OFF Serial to Parallel

SXP-320A / SXP-325A

DCE

DB-25

Device Connector's Pin #

DCE DTE DCE DTE

DB-9 DB-9 DB-25 DB-25

2 3 3 2

3 2 2 3

8 7 5 4

7 8 4 5

4 6 20 6

6 4 6 20

5 5 7 7

Cables

a 25-pin/25-pin cable

or a 9-pin/25-pin cable

Tx  Rx

Rx   Tx

RTS  CTS

CTS  RTS

DSR  DTR

DTR  DSR

GND   GND

Device's Pin #

DB-25 C-36

1 1

2-9 2-9

10 10

11 11

12 12

13 13

14 14

15 32

16 31

17 36

18-25 19-30

a 25-pin/36-pinCables

or a 36-pin/36-pin cable

STROBE

D0-D7

ACK

BUSY

SLCT

AUTOFEED-XT

ERROR

INIT

SLCT-IN

GND

SXP-320A / SXP-325A

C-36

2-9

19-30

DIP-SW

PARALLEL PORT

POWER ON LED

AC 9V JACK

RESET KEYSERIAL PORT

Manual Part NO. PAPE -1145-100

Printed in Taiwan 06/1999

9 or 25 Pin Female to 25 Pin Male Cable

36 Pin Female to 36 Pin Male Cable

SXP-320A / SXP-325A

25 Pin Male to 36 Pin Female

25 Pin Male to 25 Pin Male Cable

CONVERTER

Serial Port Cabling

Parallel Port Cabling

910 11

1312

14 15

Limited Warranty

IN NO EVENT SHALL THE DIRECT VENDOR'S LIABILITY

FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR

CONSEQUENTIAL DAMAGES RESULTING FROM THE

USE OF THE PRODUCT, DISK, OR ITS DOCUMENTATION

EXCEED THE PRICE PAID FOR THE PRODUCT.

The direct vendor makes no warranty or representation,

expressed, implied, or statutory with respect to the

contents or use of this documentation, and especially

disclaims its quality, performance, merchantability, or

ﬁtness for any particular purpose.

The direct vendor also reserves the right to revise or update

the device or documentation without obligation to notify

any individual or entity of such revisions, or update. For

further inquiries, please contact your direct vendor.

Radio & TV Interference

This equipment has been tested and found to comply with the

limits for a Class B digital device, pursuant to Part 15 of the FCC

Rules. These limits are designed to provide reasonable protection

against harmful interference in a residential installation. This

equipment generates, uses and can radiate radio frequency

energy and if not installed and used in accordance with the

instructions, may cause harmful interference to radio

communications. However, there is no guarantee that

interference will not occur in a particular installation.

Radio & TV Interference

Warning. This equipment generates, uses and radiates

radio frequency energy and if not installed and used in

accordance with the instruction manual may cause

interference to radio and television reception. It 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 the FCC Rules, which are designed

to provide reasonable protection against such interference

when operated in a commercial environment. Operation of

this equipment in a residential area is likely to cause

interference, in which case the user at his own expense

will be required to take whatever measures may be

required to correct the interference.

If this equipment does cause interference to radio or

television reception, which can be determined by turning

the equipment oﬀ and on, the user is encouraged to try to

correct the interference by one or more of the following

measures:

1. Reorient the receiving antenna.

2. Relocate the computer with respect to the receiver.

3. Move the computer away from the receiver.

4. Plug the computer into a diﬀerent outlet so that the

computer and receiver are on diﬀerent branch circuits.

5. Ensure that the mounting screws, attachment connector

screws and ground wires are tightly secured.

6. Ensure that good quality shielded and grounded cables

are used for data communications.

If necessary, the user should consult the dealer or an

experienced radio/television technician for additional

suggestions.

Appendix

Troubleshooting

If the above solutions fail to alleviate the problem, contact

your dealer for help.

Operation

When operating the SXP-320A/SXP-325A, please take note

of the following:

1. Since the SXP-320A/SXP-325A is a DCE device, the

serial device it connects to must be conﬁgured as a DTE

device.

2. In DCE mode, the unit uses RTS/DTR (pins 5 and 6)

handshaking. When RTS/DTR is at +9V, the computer is

allowed to transmit data. When the unit is busy, it sets

the RTS/DTR line to -9V, and the computer stops

transmitting data. Consequently, if the computer can

not identify the RTS/DTR signal, it may result in data

loss.

3. The unit is powered by the host RS-232C interface. In

addition to the TxD line, it is recommended that the host

RS-232C interface (MC 1488, SN 75188, or equivalent

IC's), also support RTS and DTR lines, which provide a

power source above 9V, to ensure normal operation of

the unit.

4. The unit's baud rate, data length, stop bits and parity

settings must be conﬁgured to match those of the

computer.

5. You must reset the parallel printer before printing.

RS-232C Interface Speciﬁcation

The RS-232C Interface DCE mode (default) speciﬁcation is

given in the table, below:

Centronics Interface Speciﬁcation

The Centronics Interface Speciﬁcation is given in the table,

below:

Centronics Interface Timing Chart

Speciﬁcations

Problem Cause  Solution

Power LED

does not light



No Data

Transmission     

 

Incorrect Data

Received  

Make sure that there is no problem

with the AC source, and that the AC

adapter is fully operational.

Make sure that the adapter is

correctly plugged into the AC source

and that the cable is fully plugged

into the unit's power jack.

Make sure that all cables are

properly plugged in and fully seated

in their connectors.

Rewire the cables making sure they

are correctly wired

If powered Oﬀ, turn the device On.

Otherwise, reset the Transmitting or

Terminal device.

Change the Transmitting or Terminal

device to the correct DTE mode, or

user's cross line.

Rewire the cable lines to be sure they

are properly connected.

Set the DIP Switch segments to their

proper settings.

Unit is not receiving

power.

Cables are not properly

plugged in.

Cables are not properly

wired.

Transmitting or Terminal

device has not been set

Ready for data transfer.

Transmitting or Terminal

device is in incorrect DTE

mode.

Lines are not properly

connected.

Incorrect serial

transmission DIP Switch

settings

Pin Name Function

1 STB DATA STROBE

2 DATA BIT 1 DATA BUS

3 DATA BIT 2

4 DATA BIT 3

5 DATA BIT 4

6 DATA BIT 5

7 DATA BIT 6

8 DATA BIT 7

9 DATA BIT 8

10 ACK DATA RECEIVED ACKNOWLEDGE

11 BUSY DEVICE BUSY OR NOT

12 PAPER EMPTY PULL UP

13 SLCT PULL UP

14 A-F PULL UP

15 N.C.

16-17 GROUND GROUND

18 N.C.

19-30 GROUND GROUND

31 INIT PULL UP

32 ERR PULL UP

33 GROUND GROUND

34-35 N.C.

36 SL-1 PULL DOWN

DATA

STB

BUSY

ACK

0.25

0.5 US

(min)

1 US

(min)

1 US

(min)

0.5 US

(min)

0.5 US

(min)

0.5 US

0.25 US(min)

1 US

(min)

0.5 US

(min)

1 US

(min)

Pin Name Function

1 Ground Ground

2 RxD Receive Data

3 TxD Transmit Data

4 CTS Clear to Send

5 RTS Request to Send

6 DTR Data Terminal Ready

7 Ground Ground

8 CD Pull Up (+9V)

20 DSR Data Set Ready

Power Consumption  AC 9V 150m A (max.)

Cable Distance  Up to 9 m (30')

Connectors RS-232C DB-25 female DCE

  Centronics C-36 male

Memory Size  512 KB(SXP-325A Only)

Interface Exchange In Serial or Parallel

  Out Parallel or Serial

Serial Communications Mode DCE Only

LEDs   Power (Green)

Microcontroller  ASIC

Function Key  Reset

Buﬀer Speed

 Serial 1200 - 115200 bps

  Parallel 1.5 MB/sec. (max.)

Data Compression  8.5 : 1 (max.)

Temperature Operating 5˚ - 40˚ C

  Storage -20˚ - 60˚ C

Humidity   0 - 80%

Housing   Plastic

Weight   120 g

Dimensions (L x W x H)  101 x 62 x 25.5 mm

Produktspezifikationen

Marke:	ATen
Kategorie:	Kabel für PCs und Peripheriegeräte
Modell:	SXP325A

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