B&B Electronics Asynchronous to Synchronous Converter 2010 Manual de usuario

2010AS3297 Manual Cover Page

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

Asynchronous to

Synchronous Converter

Model 2010

Documentation Number 2010AS3297

B&B Electronics Mfg. Co. Inc.

707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5105

Internet:

http://www.bb-elec.com

[email protected]

B&B Electronics -- September 1997

Not Recommended for New Installations.

Please contact Technical Support for more information.

2010AS3297 Manual Table of Contents i

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

Table of Contents

1.0 WARRANTY INFORMATION................................................... 1

1.1 RADIO AND TV INTERFERENCE ....................................... 1

1.2 SERVICE .............................................................................. 1

2.0 GENERAL INFORMATION ...................................................... 2

2.1 FEATURES........................................................................... 2

2.2 DESCRIPTION ..................................................................... 2

3.0 CONFIGURATION ................................................................... 3

3.1 SETTING INTERNAL SWITCHES........................................ 3

3.2 SWITCH SETTINGS............................................................. 4

Switches SW1-1 and SW1-2: Character Length ..................... 4

Switch SW1-3: Extended Signaling Rate (ESR) ..................... 5

4.0 INSTALLATION ........................................................................ 6

4.1 CONNECTING THE ASYNCHRONOUS PORT................... 6

4.2 CONNECTING THE SYNCHRONOUS PORT ..................... 6

APPENDIX A: SPECIFICATIONS ................................................. 7

APPENDIX B: ASYNCHRONOUS PORT CONNECTIONS

(CONFIGURED AS "DCE") ............................................................ 8

APPENDIX C: SYNCHRONOUS PORT CONNECTIONS

(CONFIGURED AS "DTE") ............................................................ 9

APPENDIX D: BLOCK DIAGRAM............................................... 10

2010AS3297 Manual 1

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

1.0 WARRANTY INFORMATION

B&B Electronics warrants all Model 2010 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 B&B

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. B&B Electronics specifically disclaims all

other warranties, expressed or implied, and the installation or use of this

product shall be deemed as user’s acceptance of these terms.

1.1 RADIO AND TV INTERFERENCE

The Model 2010 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 2010 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 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 2010 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 SERVICE

All warranty and non-warranty repairs must be returned freight prepaid

and insured to B&B Electronics. All returns must have a Return Materials

Authorization number on the outside of the shipping container. This number

may be obtained from B&B Electronics Customer Service at (815) 433-

5100.

Packages received without an RMA number will not be accepted.

B&B Electronics' technical staff is available to answer any questions

that might arise concerning the installation or use of your Model 2010.

Technical Service hours: 8 AM to 5PM CST, Monday through Friday.

2 2010AS3297 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

2.0 GENERAL INFORMATION

Thank you for your purchase of this B&B 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 B&B Electronics

Technical Support at (815) 433-5100.

2.1 FEATURES

• Conforms to CCITT V.14 and V.22 standards

• Adapts asynchronous terminals to synchronous modems and

multiplexers

• Allows character lengths from 8 - 11 bits

• Requires no AC power or batteries

• Data rates to 19.2 Kbps

• Automatically adjusts synchronous data rates

• Miniature size

• Accepts external clocking

• Made in the USA

2.2 DESCRIPTION

The Model 2010 converter gives asynchronous hardware access to the

high speed capabilities of synchronous modems or multiplexers. The Model

2010 plugs directly into the asynchronous RS-232 DTE port and connects

via RS-232 cable to the synchronous DCE device.

Drawing power from the RS-232 interface, the Model 2010 needs no

AC power or batteries to operate and supports data rates to 19.2 Kbps.

Because the Model 2010 automatically adjusts the synchronous data rate

to match the asynchronous DTE's output rate, no data rate strapping is

necessary. The Model 2010 derives clocking externally from the clock of

the synchronous DCE, and imposes no limit on data block size. Characters

may be up to 11 bits long.

Measuring only 3.2" x 2.0" x .75", the Model 2010 is housed in a sturdy

ABS plastic case. It comes fully equipped with a DB-25 male connector and

a DB-25 female connector.

2010AS3297 Manual 3

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

3.0 CONFIGURATION

The Model 2010 is configured using four internal switches. Figure 1

shows the switch locations with respect to other PC board components.

Figure 1. Switch locations on the 2010 PC board

3.1 SETTING INTERNAL SWITCHES

The four switches shown in Figure 2 allow selection of character length

and extended signaling rate. These switches are located internally on the

Model 2010's PC board. To access them use a small flathead screwdriver

to pop open the Model 2010's case as shown in Figure 3.

Figure 2. Close-up of the Model 2010’s configuration switches

4 2010AS3297 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

Figure 3. Opening the Model 2010’s case with a small screwdriver

3.2 SWITCH SETTINGS

All possible settings for the Model 2010's configuration switches are

presented in the following summary table and descriptions. If you have

additional questions regarding configuration, contact B&B Technical

Support at (815) 433-5100.

Switches SW1-1 and SW1-2: Character Length

Switches SW1-1 and SW1-2 are set in combination to determine the

character length for asynchronous data.

SW 1-1 SW 1-2

Off On 8 bit

On On 9 bit

Off Off 10 bit

On Off 11 bit

2010AS3297 Manual 5

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

Switch SW1-3: Extended Signaling Rate (ESR)

The setting for switch 1-3 determines the range of variability the Model

2010 looks for in asynchronous data rates (i.e., the actual variance from a

given frequency level the Model 2010 will tolerate).

SW 1-3

Off -2.5%to +1%

On -2.5%to +2.3%

Switch SW1-4: Not Used

6 2010AS3297 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

4.0 INSTALLATION

The Model 2010 is designed to be used in

pairs

, with one unit installed

between an asynchronous DTE and a synchronous DCE on either end of a

synchronous communication link. Figure 4 (below) illustrates a typical

Model 2010 installation.

Figure 4. Typical Model 2010 application

4.1 CONNECTING THE ASYNCHRONOUS PORT

The asynchronous port of the Model 2010 is a DB-25 female and is

configured as "DCE". Therefore, it wants to talk to a DTE device such as a

terminal or PC. The Model 2010 may be plugged directly into the DB-25

serial port of a DTE or connected via "straight through" cable.

4.2 CONNECTING THE SYNCHRONOUS PORT

The synchronous port of the Model 2010 is a DB-25 male and is

configured as "DTE." Therefore, it wants to talk to a DCE device such as a

modem or multiplexer. The Model 2010 may be plugged directly into the

DB-25 serial port of a DCE or connected via "straight through" cable.

2010AS3297 Manual 7

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

APPENDIX A: SPECIFICATIONS

Data Rates: Up to 19.2 Kbps

Clocking: Provided by modem or multiplexer

Buffer: 4 bit RTS override feature empties buffers before dropping RTS,

making the Model 2010 usable in a polling environment

Data Transmission: Full or half duplex

Connectors:

Async.: DB-25 female

Sync.: DB-25 male

Power: No external power required;uses power from data and control

signals

Temperature Range: 0-60°C (32-140°F)

Altitude: 0-15,000 feet

Humidity: Up to 95%non-condensing

Dimensions: 3.2" x 2.0” x 0.75"

Weight: 2oz.

8 2010AS3297 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

APPENDIX B: ASYNCHRONOUS PORT

CONNECTIONS (CONFIGURED AS “DCE”)

Pin Name Description

1 FG Frame Ground;connected straight to synchronous port

2 TXD Transmit Data (to 2010);data input from asynchronous

port;input to the 2010 power supply

3 RXD Receive Data (from 2010);data output to asynchronous

port

4 RTS Request to Send (to 2010);input to the 2010 power

supply

5 CTS Clear to Send (from 2010);connected straight through to

synchronous port

6 DSR Data Set Ready (from 2010);connected straight through

to synchronous port

7 SG Signal Ground;connected straight through to

synchronous port

8 CD Carrier Detect (from 2010);connected straight through to

synchronous port

9+DCV Connected straight through to synchronous port

10 -DCV Connected straight through to synchronous port

20 DTR Data Terminal Ready (to 2010);input to 2010 power

supply

22 Rl Ring Indicator (from 2010);connected straight through to

synchronous port

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