Patton electronics 3004 ECB Series Manuel utilisateur

USER

MANUAL

MODEL 3004

ECB Series

Miniature Self-Powered

Elastic Clock Buffers

Part# 07M3004ECB-A

Doc# 011031UA

Revised 08/22/00

SALES OFFICE

(301)975-1000

TECHNICAL SUPPORT

(301)975-1007

http://www.patton.com

An ISO-9001

Certified

Company

TABLE OF CONTENTS

SECTIONPAGE

1.0Warranty Information.............................................................2

1.1Radio and TV Interference

1.2CE Notice

1.3 Service Information

2.0General Information...............................................................4

2.1Features

2.2Description

3.0 Operation................................................................................5

4.0Installation.............................................................................6

Appendix A - Specifications..........................................................7

Appendix B - V.35 Connector and Pin Assignments.....................9

Appendix C - RS-530 Connector and Pin Assignments.............10

Appendix D - RS-449 Connector and Pin Assignments..............11

Appendix E - X.21 Connector and Pin Assignments..................12

1.0 WARRANTY INFORMATION

Patton Electronics

warrants all Model 3004-ECB 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 Electronicsbe 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

Electronicsspecifically 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 3004-ECB 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 3004-ECB 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 3004-

ECB does cause interference to radio or television reception, which can

be determined by disconnecting the unit, 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 CE NOTICE

The CE symbol on your Patton Electronics equipment indicates

that it is in compliance with the Electromagnetic Compatibility (EMC)

directive of the Union European (EU). A Certificate of Compliance is

available by contacting Technical Support.

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: (301) 975-1007

email: [email protected]m

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 3004-ECB. Technical Service hours: 8AM to 5PM EST,

Monday through Friday.

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 Services at (301) 975-1007.

2.1 FEATURES

· DCE to DCE connection

· Interface powered - No external power supply required

· Dual 512-bit, adaptive buffers

· Data rates up to 2.304 Mbps

· Available with male or female connectors and integral 6 foot cables

· Compact

· Easy to install

· Four models available:

3004-ECB/V.35 - V.35 compatible. Male or female 34-pin V.35

connectors on 6 foot cables

3004-ECB/530 - RS-422/V.11 compatible. Male or female 25-pin

D-sub connectors on 6 foot cables

3004-ECB/V.36 - RS-422/V.11 compatible. Male or female 37-pin

D-sub connectors on 6 foot cables

3004-ECB/X.21 - RS-422/V.11 compatible. Male or female 15-pin

D-sub connectors on 6 foot cables

2.2 DESCRIPTION

The Model 3004-ECB series are self-powered elastic buffers, which

enable the connection of two independently clocked DCEs. When two

internally clocked devices exchange data and cannot be clocked externally,

the 3004-ECB is used as an interface between them. The Model 3004-

ECB utilizes two buffers to reduce errors caused by clock drift between the

two DCEs. All models employ adaptive buffer control. Internal buffers will

automatically adjust to "almost full" in the case of underflow or to "almost

empty" in case of overflow. All models perform the necessary "cross over"

wiring connections between the two DCEs. Installation is easy and

straightforward.

3 4

3.0 OPERATION

The receive clock of DCE 2 clocks data into buffer A. The transmit clock of

DCE 1 clocks data out of buffer A.

The receive clock of DCE 1 clocks data into buffer B. The transmit clock of

DCE 2 clocks data out of buffer B.

For the X.21 interface, both receive clock and transmit clock of each side

are connected to the X.21 DCE's "Signal Timing".

Note: The buffers introduce transmission delay into the data paths between the

DCEs. The control signals, however, are not buffered and are just wired through,

as shown. This should be considered when using the 3004-ECB in applications

where the data and control signals must have the same delay.

4.0 INSTALLATION

Installation is easy and straightforward. Simply connect each port of the 3004-

ECB to one of the DCEs. There are no jumpers or switches to configure.

DCE 1 DCE 2

INTERNAL CLOCK

BUFFER A

RTS

DSR

DTR

CTS

DTR

RTS

DSR

J1 J2

BUFFER B

INTERNAL CLOCK

DCE 3004-ECB DCE

5 6

APPENDIX A

MODEL 3004-ECB SERIES

TECHNICAL SPECIFICATIONS

Connection:

DCE to DCE

Wiring:

Internal "cross-over" wiring

Transmission format:

Synchronous, transparent to protocol

Data rate:

Up to 2.304 Mbps

Functional interface:

3004-ECB/V.35- CCITT V.35

3004-ECB/530- EIA/RS-530

3004-ECB/V.36- EIA/RS-449

3004-ECB/X21- CCITT X.21

Electrical/Physical

Interface:

3004-ECB/V.35 - V.35 compatible. Male or

female 34-pin V.35 connectors on 6 foot cables.

3004-ECB/530 - RS-422/V.11 compatible. Male

or female 25-pin D-sub connectors on 6 foot

cables.

3004-ECB/V.36 - RS-422/V.11 compatible. Male

or female 37-pin D-sub connectors on 6 foot

cables.

3004-ECB/X.21- RS-422/V.11 compatible. Male

or female 15-pin D-sub connectors on 6 foot

cables

DCE to DCE

Buffering:

Two, adaptive-centering 512-bit buffers

APPENDIX A

MODEL 3004-ECB SERIES

TECHNICAL SPECIFICATIONS

(continued)

Powering:

Derived from data, clock and control signals. No

external power required.

Environment:

0-60°C, 32-140°F, humidity up to 95%, non-

condensing

Mark:

7 8

APPENDIX B

PATTON ELECTRONICSMODEL 3004 ECB/V.35

INTERFACE PIN ASSIGNMENT

V.35 Interface

Pin #Signal

A............................FG (Frame Ground)

B............................SGND (Signal Ground)

C...........................RTS (Request to Send)

D...........................CTS (Clear to Send)

E...........................DSR (Data Set Ready)

F............................CD (Carrier Detect)

H...........................DTR (Data Terminal Ready)

P...........................TD(Transmit Data-A)

R...........................RD (Receive Data-A)

S...........................TD/ (Transmit Data-B)

T............................RD/ (Receive Data-B)

U...........................XTC (External Transmit Clock-A)

V...........................RC(Receive Timing-A)

W...........................XTC/ (External Transmit Clock-B)

X...........................RC/ (Receive Timing-B)

Y...........................TC(Transmit Timing-A)

AA..........................TC/ (Transmit Timing-B)

APPENDIX C

PATTON ELECTRONICSMODEL 3004 ECB/530

INTERFACE PIN ASSIGNMENT

RS-530 Interface Pin Description

(DB-25 Connector)

Pin #Signal

1FG (Frame Ground)

2TD (Transmit Data-A)

3RD (Receive Data-A)

4RTS (Request to Send-A)

5CTS (Clear to Send-A)

6DSR (Data Set Ready-A)

7SGND (Signal Ground)

8CD (Carrier Detect-A)

9RC/ (Receive Timing-B)

10CD/(Carrier Detect-B)

11XTC/ (External Transmit Clock-B)

12TC/ (Transmit Timing-B)

13CTS/ (Clear to Send-B)

14TD/ (Transmit Data-B)

15TC (Transmit Timing-A)

16RD (Receive Data-B)

17RC (Receive Timing-A)

19RTS/ (Request to Send-B)

20DTR (Data Terminal Ready-A)

22DSR/ (Data Set Ready-B)

23DTR/ (Data Terminal Ready-B)

24XTC (External Transmit Clock-A)

910

APPENDIX D

PATTON ELECTRONICSMODEL 3004-ECB/V.36

INTERFACE PIN ASSIGNMENT

RS-449 Interface Pin Description

(DB-37 Connector)

Pin #Signal

1FG (Frame Ground)

4TD (Transmit Data-A)

5TC (Transmit Timing-A)

6RD (Receive Data-A)

7RTS (Request to Send-A)

8RC (Receive Timing-A)

9CTS (Clear to Send-A)

11DM (Data Mode-A) (DSR-A)

12TR (Terminal Ready-A) (DTR-A)

13RR (Receiver Ready-A) (CD-A)

17XTC (External Transmit Clock-A)

19 SGND (Signal Ground)

20SGND (Signal Ground)

22TD/ (Transmit Data-B)

23TC/ (Transmit Timing-B)

24RD (Receive Data-B)

25RTS/ (Request to Send-B)

26RC/ (Receive Timing-B)

27CTS/ (Clear to Send-B)

37SGND (Signal Ground)

29DM (Data Mode-B) (DSR-B)

30TR (Terminal Ready-B) (DTR-B)

31RR (Receiver Ready-B) (CD-B)

35XTC/ (External Transmit Clock-B)

APPENDIX E

PATTON ELECTRONICSMODEL 3004-ECB/X.21

INTERFACE PIN ASSIGNMENT

X.21 Interface Pin Description

(DB-15 Connector)

Pin #Signal

1FG (Frame Ground)

2TD (Transmit Data-A)

3C (Control-A)

4R (Receive-A)

5I (Indication-A)

6S (Signal Timing-A)

8SGND (Signal Ground)

9T/ (Transmit-B)

10C/ (Control-B)

11R/ (Receive-B)

12I/ (Indication-B)

13S/ (Signal Timing-B)

1112

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