Patton electronics 3004 ECB Series User manual

USER
MANUAL
MODEL 3004
ECB Series
Miniature Self-Powered
Elastic Clock Buffers
Part# 07M3004ECB-A
Doc# 011031UA
Revised 08/22/00
SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
http://www.patton.com
An ISO-9001
Certified
Company

2
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.
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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: [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 [phone].
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.
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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
TC
TT
TD
CD
RTS
RC
RD
TD
RC
RD
DSR
DTR
CTS
SG
FG
SG
FG
CD
CTS
DTR
RTS
DSR
TC
J1 J2
TT
BUFFER B
INTERNAL CLOCK
DCE 3004-ECB DCE
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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: CE
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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)
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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)
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