Patton 3060-V24 User Manual

B

DIGITAL BRIDGE

Doc #: 102001UA

Part #: 07M3060/V24-A

3060/V24

(CTS MD-V.24/TCB)

INSTALLATION AND OPERATIONS MANUAL

January 4, 2000

An ISO-9001

Certified Company

Copyright © 2000 Patton Electronics Co., All Rights Reserved.

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3060/V24

102001UA

COPYRIGHT NOTICE

Copyright © 2000 Patton Electronics Co., All Rights Reserved.

PROPRIETARY NOTICE

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liability for losses incurred as a result of out-of-date or incorrect information contained in this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.

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INSTALLATION AND OPERATIONS MANUAL

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PATTON ELECTRONICS CO.

3060/V24

EMISSION 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 expence.

CANADIAN EMISSIONS

This digital apparatus does not exceed the Class A limits for noise emmissions 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.

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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

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102001UA

Contents

CHAPTER 1 - OPERATION

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

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

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

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

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

Channel Tail Circuits .........................................................................................................................1-4

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

Front Panel LEDs ..............................................................................................................................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

Equipment Grounding (SW21-8).......................................................................................................2-2

RTS To CTS Delay (SW22-1,2,3) .....................................................................................................2-3

Anti-Streaming (SW21-1,2,3) ............................................................................................................ 2-3

Receive Data Mode (SW23-4) ..........................................................................................................2-3

Control Turn-Off Delay in "DATA" Switching Mode (SW23-1,2) ......................................................2-4

Switch on Data / Control (SW25-1,2,3,4,5,6) ....................................................................................2-4

Internal Baud Rates (SW22-4,5,6,7).................................................................................................2-4

Fallback Clock Enable (SW-23-5) .....................................................................................................2-5

Fallback Clocking From Sub-Channel 6 (SW22-4,5,6).....................................................................2-5

Fallback Mode Selection (SW23-6) ...................................................................................................2-5

TX Clock Source Selection (SW21-4,5,6).........................................................................................2-5

TX Clock Pin Selection (SW21-7) .....................................................................................................2-5

RX Clock Source Selection (SW24-1,2,3) ........................................................................................ 2-6

Tail Circuit Buffers (SW22-8) ............................................................................................................2-6

Port DCE/DTE Selection (SW7 thru SW20) .....................................................................................2-6

Test Voltage Enable Pins 9 & 10 (JP4 & JP5)..................................................................................2- 7

DTR / DSR Forced Active (JP6 thru JP12).......................................................................................2-7

FACTORY Test Jumpers (JP1, JP2 and JP3)..................................................................................2-8

APPENDIX

Typical Application............................................................................................................................ A-1

Typical Tail Circuit Configuration ..................................................................................................... A-1

Interface Pins Supported.................................................................................................................. A-1

Master DTE / Sub-Channel DTE Interface Flow Diagram............................................................... A-2

Master DTE / Sub-Channel DCE Interface Flow Diagram .............................................................. A-2

Master DCE / Sub-Channel DTE Interface Flow Diagram .............................................................. A-3

Master DCE / Sub-Channel DCE Interface Flow Diagram .............................................................. A-3

TECHNICAL SPECIFICATIONS...................................................................................................... A-4

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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3060/V24

102001UA

CHAPTER 1 - OPERATION

The Patton 3060/V24 (MD-V.24/TCB) is a network enhancement accessory intended for high
speed synchronous or asynchronous RS-232 modem, or port sharing applications. The 3060/
V24 (MD-V.24/TCB) allows for immediate expansion of a system without the requirement of
additional communication lines. The 3060/V24 (MD-V.24/TCB) allows any combination of up
to six RS-232 DCE or DTE devices to share a single RS-232 DCE or DTE high speed link in
a point-to-point or multi-point polled network.

Channel Clocking

The Patton 3060/V24 (MD-V.24/TCB) is protocol transparent and operates in synchronous
and asynchronous environments at data rates up to 76,800bps, depending on cable length
and attached equipment. Clocking can be derived from the Master Port clock, (pins 15 or 24
for TXC and 17 for RXC), the internal clock generator or any Sub-Channel clock, (pins 15 or
24 for TXC and 17 for RXC).

Fallback Clocking

In the event of loss of an externally provided clock or optionally Sub-Channel 1 DCD becoming
inactive, the 3060/V24 (MD-V.24/TCB) has the ability to automatically fall back to the
predetermined internal baud rate clock or the Sub-Channel 6 RX Clock (pin 17).

Channel Interface

The 3060/V24 (MD-V.24/TCB) has seven DB-25 female connectors located on the rear of the
unit. Each port is DCE/DTE selectable, which eliminates the need for crossover cables. DSR
or DTR can additionally be forced to the active state individually on each Sub-Channel by
Jumper control.

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OPERATION

102001UA

Anti-streaming

PATTON ELECTRONICS CO.

3060/V24

INSTALLATION AND OPERATIONS MANUAL

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. The 3060/V24 (MD-V.24/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/V24 (MD-V.24/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.

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

The Sub-Channel will no longer receive data or CTS from the Master Port.

. Once a Sub-Channel is
locked out due to streaming, the Sub-Channel will remain locked out until the attached device
removes the streaming condition. If RTS is held active, RTS must become inactive, if
continuous data transitions have triggered the Anti-Stream logic, the transitions must stop
before the 3060/V24 (MD-V.24/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 Patton 3060/V24 (MD-V.24/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

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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

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102001UA

Channel Selection Modes

The Patton 3060/V24 (MD-V.24/TCB) provides two selectable Sub-Channel service modes of
operation, the Scanning Mode and Priority Mode. Depending on system requirements, either
mode may be selected by internal DIP switch settings. Both modes switch on activity from the
Sub-Channel.

In the Scanning Mode the Patton 3060/V24 (MD-V.24/TCB) scans each Sub-Channel, in
sequence, beginning with Sub-Channel 1. This rotational sequence is repeated continually
with each attached Sub-Channel having equal access to the communications link. When data
or control lines from a Sub-Channel become active that Sub-Channel is switched through to
the master port by the 3060/V24 (MD-V.24/TCB). All remaining Sub-Channels are locked out
until the first device becomes inactive. When the Sub-Channel device becomes inactive, the
3060/V24 (MD-V.24/TCB) will resume scanning the Sub-Channels for another active signal.

When configured for Priority Mode operation, the Patton 3060/V24 (MD-V.24/TCB) monitors
all Sub-Channels simultaneously with Sub-Channel 1 having the highest priority. When a Sub­Channel becomes inactive, the 3060/V24 (MD-V.24/TCB) will automatically default to the
highest priority (lowest number) Sub-Channel with activity.

Contention for the Master port is accomplished by asserting RTS (Request to Send) if the
Sub-Port is configured as a DCE, DCD (Data Carrier Detect) if the Sub-Port is configured as
a DTE or Data Transitions from the attached Sub-Channel devices in either configuration. The
active interface lead, RTS or DCD, as well as selection of contention mode,
or

“Interface Lead”

activation, can be selected on an individual basis for each Sub-Channel.

“Data Transitions”

Once a Sub-Channel asserts an active control signal the control signal will be passed through
to the Master Port, depending on DTE / DCE configuration of the Sub-Channel and Master
Port. This control will be passed without delays. If the Master Port is configured as a DTE the
signal will be passed as RTS. The CTS returned to the Master will have an optional delay
added before the signal is returned to the Sub-Channel port.

Port Enable / Disable, front panel switches must be pushed in (GREEN indication) for a Sub­Channel to access the Master Port regardless of the mode of operation selected.

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OPERATION