Patton 3060/X.21 User Manual

B

Doc #: 109001UA

Part #: 07M3060/X21-A

DIGITAL BRIDGE

3060/X.21

(CTS MD-X.21/TCB)

INSTALLATION AND OPERATIONS MANUAL

March 29, 2000

An ISO-9001

Certified Company

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

PROPRIETARY NOTICE

3060/X21

109001UA

The information contained herein is proprietary and confidential to Patton Electronics Co. Any reproduction or redistribution of this
publication, in whole or in part, is expressly prohibited unless written authorization is given by Patton

Electronics Co.

WARRANTY NOTICE

WARRANTIES: Patton Electronics Co. (hereafter referred to as Patton) warrants that its equipment is free from any defects in
materials and workmanship. The warranty period shall be two years from the date of shipment of equipment. Patton’s sole obligation
under its warranty is limited to the repair or replacement of the defective equipment, provided it is returned to Patton, transportation
prepaid, within a reasonable period. This warranty will not extend to equipment subjected to accident, misuse, alterations or repair not
made by Patton or authorized by Patton in writing.

PUBLICATION NOTICE

This manual has been compiled and checked for accuracy. The information in this manual does not constitute a warranty of perfor­mance. Patton reserves the right to revise this publication and make changes from time to time in the content thereof. Patton assumes
no liability for losses incurred as a result of out-of-date or incorrect information contained in this manual.

EMISSIONS REQUIREMENTS
FCC Class A

Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of FCC
rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own
expense.

CANADIAN EMISSIONS

This digital apparatus does not exceed the Class A limits for noise emissions from a digital apparatus set out in the Radio Interference
Regulations of the Canadian Department of Communications.

Le present appareil numerique n’emet pas de bruits redioelectriques depassant les limites applicables aux appareils numeriques de la
Class A prescites dans le Reglement sur le brouillage redioelectrique edicte par le ministere des Communications du Canada.

RADIO AND TV INTERFERENCE

The Patton MSDs generate and use 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 Patton MSDs have been tested and
found to comply with the limits for Class A computing devices 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 Patton MSDs do cause interference to radio or television
reception, which can be determined by disconnecting the cables, 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).

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 Services at:

tel: [phone];
email: [e-mail];
or, www: 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 u se of your

Patton MSDs. Technical Service hours: 8AM to 5PM EST, Monday through Friday.

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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3060/X21

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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3060/X21

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Table of Contents

CHAPTER 1 - OPERATION

Clocking ..................................................................................................... 1-1

Fallback Clocking ......................................................................................... 1-1

Channel Interface ........................................................................................ 1-1

Anti-streaming ............................................................................................ 1-2

Channel Selection Modes ............................................................................. 1-3

Channel Tail Circuits .................................................................................... 1-3

Interface Connections .................................................................................. 1-4

Front Panel Indicators .................................................................................. 1-4

Channel Enable / Disable Switches ................................................................ 1-4

Power Supply .............................................................................................. 1-4

CHAPTER 2 - SETUP AND INSTALLATION

Power Connection ....................................................................................... 2-1

Factory Configuration Switch Settings ............................................................ 2-1

Disassembly ............................................................................................... 2-2

Installation.................................................................................................. 2-2

Internal Baud Rate Selection (SW21-1,2,3,4,5,6) ........................................... 2-3

Clock Source Selection (SW22-1,2,3) ............................................................ 2-4

Anti-Streaming (SW22-4,5,6) (SW23-4) ........................................................ 2-4

Control Turn-Off Delay in “DATA” Switching Mode (SW23-1,2) ........................... 2-5

Receive Data Mode (SW23-3) ...................................................................... 2-5

Master Interface Control Lead State (SW23-5) ............................................... 2-5

Equipment Grounding (SW23-6) .................................................................... 2-5

Fallback Clock Selection (SW24-1) ................................................................. 2-5

Channel 6 Input State (SW24-2) ................................................................... 2-6

Tail Circuit Buffers/Asynchronous Operation (SW25-1) .................................... 2-6

Control / Indicate Output Lead Mode (SW25-2) ............................................. 2-6

Priority / Scan Mode Select (SW25-3) .......................................................... 2-6

Control To Indicate Delay (SW25-4,5,6) ......................................................... 2-6

Sub-Channel Interface Control Lead State (SW26-1,2,3,4,5,6) ......................... 2-7

Switch on Data / Control (SW27-1,2,3,4,5,6) ............................................... 2-7

Port DCE/DTE Selection (SW7 through SW20) .............................................. 2-7

Factory Test Jumpers (JP1,JP2)................................................................... 2-7

APPENDIX

TECHNICAL SPECIFICATIONS......................................................................... A-1

Typical Application ....................................................................................... A-2

Connector Pinout ........................................................................................ A-2

Configuration Diagram ................................................................................. A-3

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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3060/X21

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CHAPTER 1 - OPERATION

The 3060/X21 (CTS MD-X.21/TCB) is a network enhancement accessory intended for high
speed Synchronous or Asynchronous X.21 Modem, or port sharing applications. The 3060/
X21 (CTS MD-X.21/TCB) allows for immediate expansion of a system without the requirement
of additional communication lines. The 3060/X21 (CTS MD-X.21/TCB) allows up to six X.21
DCE or DTE devices to share a single X.21 DCE or DTE high speed link in a point-to-point or
multi-point polled network.

Clocking

The Patton 3060/X21 (CTS MD-X.21/TCB) is protocol transparent and operates in
synchronous and asynchronous environments at data rates up to 2048Kbps. Clocking can be
derived from the master port clock (pins 6 &13), the internal clock generator or any Sub­Channel clock (pins 6 &13).

Fallback Clocking

In the event of loss of an externally provided clock the device has the ability to fall back to the
predetermined internal baud rate clock or to the clock provided on Sub-Channel 6.

Channel Interface

The 3060/X21 (CTS MD-X.21/TCB) has seven DB-15 female connectors located on the rear
of the unit. Each port is DCE/DTE selectable, which eliminates the need for a crossover
cable. The Control/Indicate output leads can be individually selected to follow the Modem or
be forced active. The Sub-Channel 6 Control/Indicate input lead can be forced Active or
allowed to follow the interface lead.

1-1

Operation

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Anti-streaming

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3060/X21

A typical problem often encountered is a

“STREAMING”

remote terminal. The streaming
problem can tie up an entire circuit until the offending device has recovered or is powered
down. A streaming condition occurs when a Sub-Channel remains active, disrupting the
polling sequence. The3060/X21 (CTS MD-X.21/TCB) provides two user selectable modes of
controlling a streaming condition, an automatic anti-streaming Abort Timer with eight
selectable block lengths and a setting to disable anti-streaming for large data block transfers,
and a manual Operator Control mode (front panel push button switch).

Automatic Anti-Streaming

- Automatic Anti-streaming will block the asserted control signal
from the Sub-Channel Port, releasing the 3060/X21 (CTS MD-X.21/TCB) to accept requests
from any other Sub-Channel that has not been locked out due to a streaming condition. When
a Sub-Channel is locked out for streaming, a visual indication, by Sub-Channel, is provided on
the front panel.

Port. Any data sent to the Master Port by the streaming device will be lost

The Sub-Channel will no longer receive data or Indicate(I) from the Master

. Once a Sub­Channel is locked out due to streaming, the Sub-Channel will remain locked out until the
attached device removes the streaming condition. If Indicate (I)

DCE)

is held active, I/C lead must become inactive, if continuous data transitions have

(for DTE)

or Control (C)

(for

triggered the Anti-Stream logic, the transitions must stop before the 3060/X21 (CTS MD-X.21/
TCB) will clear the Anti-Stream logic to that Sub-Channel. Removing the Sub-Channel via the
front panel disable switch will not clear the Anti-stream logic for a Sub-Channel once it has
been activated.

Manual Anti-Stream

- A streaming condition caused by one of the attached terminals can be
quickly corrected by the 3060/X21 (CTS MD-X.21/TCB) via the associated front panel locking
switches. A switch is provided for each Sub-Channel and permits the rapid removal of a
streaming terminal without having to disconnect any cables or power down the offending
terminal. Terminals may be selectively removed for self-test and maintenance without affecting
the remaining Sub-Channels. Once the streaming condition has been corrected, the front
panel switch is simply depressed to the locked (Enable) position (Green indicator ON) to
reestablish normal operation. Removing a Sub-Channel with the front panel switch will block
data from the Sub-Channel going to the Master Port but will not block data going from the
Master Port to the Sub-Channel as the Automatic Anti-Stream option did.

Operation

1-2