Patton electronics 3080/V24 Installation And Operation Manual

B

DIGIT A L SHARING DEVICE

Doc #: 124001UA

Part #: 07M3080-A

3080/V24

(CTS DSD-8)

INSTALLATION AND OPERATIONS MANUAL

August 23, 2000

An ISO-9001

Certified Company

Copyright© 2000 Patton Electronics Co., All Rights Reserved

PATTON ELECTRONICS CO. INSTALLATION AND OPERATIONS MANUAL

3080/V24

124001UA

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

Electronics Co.

Patton

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 Patton assumes no liability for losses incurred as a result of out-of-date or incorrect information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.

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).

CE NOTICE

The CE symbol on your Patton Electronics equipment indicates that it is in compliance with the electromagnetic
Compatibility (EMC) directive and the Low Voltage Directive (LVD) of the European Union (EU). A Certificate of
Compliance is available by contacting Technical Support.

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 Support 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 use of your Patton MSDs. Technical Support hours: 8AM to 5PM EST, Monday through Friday.

Copyright© 2000 Patton Electronics Co., All Rights Reserved

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INSTALLATION AND OPERATIONS MANUAL

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PATTON ELECTRONICS CO.

3080/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 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.

VDE Emissionen

Anhang 2 zur Anlage 1 zur AmtsblVfg 243/1991
Bescheinigung des Herstellers / Importeurs
Hiermit wird bescheinigt, daß der/die/das

8 Port Digital Sharing Device, 3080/V24 (CTS DSD-8), 124000
(Gerät, Typ, Bezeichnung)
in Übereinstimmung mit den Bestimmungen der BMPT-AmtsblVfg 243/1991 funkentstört ist.
Der vorschriftsmäßige Betrieb mancher Geräte (z.B. Meßsender) kann allerdings gewissen
Einschränkungen unterliegen. Beachten Sie deshalb die Hinweise in der
Bedienungsanleitung.

Dem Zentralamt für Zulassungen im Fernmeldewesen wurde das Inverkehrbringen dieses
Gerätes angezeigt und die Berechtigung zur Überprüfung der Serie auf die Einhaltung der
Bestimmungen eingeräumt.

Patton Electronics Co.

7622 Rickenbacker Drive

Gaithersburg, Maryland, USA 20879

(Name und Anschrift des Herstellers / Importeurs)

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PATTON ELECTRONICS CO. INSTALLATION AND OPERATIONS MANUAL

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Table of Contents

CHAPTER 1 - OPERATION

Channel 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 (SW27-6).......................................................................................................2-2

CTS Delay (SW31-3,4,5)...................................................................................................................2-3

Anti-Streaming (SW28-4,5,6 and SW29-3) ....................................................................................... 2-3

Receive Data Mode (SW29-4) ..........................................................................................................2-3

Control Turn-Off Delay in “DATA” Switching Mode (SW29-1,2) ...................................................... 2-4

Switch on Data / Control (SW29-5,6)................................................................................................2-4

Internal Baud Rates (SW30-1,2,3,4)................................................................................................. 2-4

Fallback Clock Enable (SW-30-6) .....................................................................................................2-5

Fallback Clocking From Sub-Channel 6 (SW30-1,2,3)..................................................................... 2-5

Fallback Mode Selection (SW30-5) ...................................................................................................2-5

TX Clock Source Selection (SW27--1,2,3) ........................................................................................2-5

TX Clock Pin Selection (SW27-4) .....................................................................................................2-5

RX Clock Source Selection (SW28-1,2,3) ........................................................................................ 2-6

Tail Circuit Buffer (SW31-1) ..............................................................................................................2-6

Port DCE/DTE Selection (SW9 thru SW26) .....................................................................................2-7

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

DTR / DSR Forced Active (JP6 thru JP14)....................................................................................... 2-8

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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CHAPTER 1 - OPERATION

The Patton 3080/V24 (CTS DSD-8) is a network enhancement accessory intended for high
speed synchronous or asynchronous Modem, or port sharing applications. The 3080/V24
(CTS DSD-8) allows for immediate expansion of a system without the requirement of
additional communication lines. The 3080/V24 (CTS DSD-8) allows any combination of up to
eight DCE or DTE devices to share a single DCE or DTE high speed link in a point-to-point or
multi-point polled network.

Channel Clocking

The Patton 3080/V24 (CTS DSD-8) 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 1 through 6 (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 3080/V24 (CTS DSD-8) 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 3080/V24 (CTS DSD-8) has nine DB-25 female connectors located on the rear of the unit.
Each connector is pinned with EIA RS-232, using RS-423 electrical characteristics. This
enables extended cable driving distances, which often bypasses the need for line drivers.
Each port is DCE/DTE selectable, which eliminates the need for a crossover cable. DSR or
DTR can additionally be forced to the active state individually on each Sub-Channel by Jumper
control.

3080/V24

SUB-CHANNEL STATUS

ACTIVE

ANTI-STREAM

Pwr SD RD

FBC

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

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Anti-streaming

PATTON ELECTRONICS CO.

3080/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 3080/V24 (CTS DSD-8) 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 3080/V24 (CTS DSD-8) to accept requests from any
other Sub-Channel that has not been locked out due to a streaming condition. When a Sub­Channel is locked out for streaming, a visual indication, by Sub-Channel, is provided on the
front panel.

will still be broadcast to locked out Sub-Channels

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

. 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. When configured for “Switch on RTS” Mode, if RTS is held active, RTS
must become inactive. When configured for “Switch on Data” Mode, if continuous data
transitions have triggered the Anti-Stream logic, the transitions must stop before the DSD-8
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

- If manual Anti-Stream protection is chosen, a streaming condition
caused by one of the attached terminals can be quickly corrected by the 3080/V24 (CTS
DSD-8) via the associated front panel locking switches. A switch is provided for each Sub­Channel 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 re-establish normal operation. Removing a Sub­Channel 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.

Channel Selection Modes

The 3080/V24 (CTS DSD-8) 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.

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In the Scanning Mode the 3080/V24 (CTS DSD-8) 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 3080/V24 (CTS DSD-8). All remaining Sub-Channels are locked out until the first
device becomes inactive. When the Sub-Channel device becomes inactive, the 3080/V24
(CTS DSD-8) will resume scanning the Sub-Channels for another active signal.

When configured for Priority Mode operation, the 3080/V24 (CTS DSD-8) monitors all Sub­Channels simultaneously with Sub-Channel 1 having the highest priority. When a Sub-Channel
becomes inactive, the 3080/V24 (CTS DSD-8) 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 can be selected on an individual basis for each Sub­channel, selection of contention mode,

“Data Transitions”

or

“Interface Lead”

activation is
selected in Sub-channel groups. Sub-channels 1 thru 4 are the first group and Sub-channels 5
thru 8 are the second group. All Sub-channels in a group will be set to the same contention
mode, either

“Data Transitions”

or

“Interface Lead”

activation. Once a Sub-Channel asserts
an active control signal, that 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.

Channel Tail Circuits

A buffer is built into the unit for tail circuit (DCE to DCE) applications. An 8 bit centered ring
buffer is used to correct the clock phasing errors generated between the Modem on the
Master Port and the Sub-Channel port for the data transferred from the Sub-Channel to the
Master Port. If the unit is operated in an asynchronous environment the buffer must be
bypassed. This is accomplished by moving the SYNC/ASYNC switch to ASYNC.

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3080/V24

Interface Connections

All connections are made via industry standard EIA RS-232 DB-25 female connectors located
on the rear of the unit. The following interface leads are implemented, Chassis (1), TXD (2),
RXD (3), RTS (4), CTS (5), DSR (6), Sig Gnd (7), DCD (8), Plus Unreg (9), Minus Unreg (10),
TXC (15), RXC (17), DTR (20), XTXC (24). Pins 9 & 10 can be disabled by Jumpers on the
PCB.

Front Panel LEDs

Front panel LEDs are provided to indicate power is applied, RXD and TXD activity from the
Master Port, Sub-Channel activity of each individual Port, Anti-Stream condition of each Sub­Channel and an indication of clock fallback condition.

Channel Enable / Disable Switches

Front panel switches allow operator intervention to remove an individual Sub-Channel from
accessing the Master Port. Positive latching type switches are provided for each Sub­Channel port for isolating or removing a streaming terminal. The Sub-Channel is activated by
pushing the switch until it is in the “IN” position. The switch will indicate GREEN in color. To
disable a Sub-Channel push the switch until it locks in the “OUT” position, the switch will
indicate BLACK in color. Disabling a Sub-Channel with the front panel does not prevent the
Sub-Channel from receiving data from the Master Port only from sending data to the Master
Port.

Power Supply

A linear power supply is located internally, an external 110/220VA switch is located on the rear
of the unit. If chassis ground and signal ground need to be tied together this can also be
accomplished by switch selection. The unit is Rackmountable for 19" (or optional 23")
cabinets, by using the included Rackmount Kit. Safety approvals granted are UL, CSA and
TÜV. Emission approvals for FCC Class A and VFG243 have also been granted.

OPERATION

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Caution, Disconnect the PO WER Before Removing The Cover
Vorsicht, Befor Deckung Abnehmen Mach Strom Zu.

CHAPTER 2 - SETUP AND INSTALLATION

Power Connection

Before connecting the 3080/V24 (CTS DSD-8) to a AC power source the top cover must be
installed and secured with the supplied #8-32 screws. The unit is supplied with a 110/220VA
voltage switch, turn the switch with a coin or screw driver to the appropriate voltage for your
country. If the unit is set to 110V insure that
the fuses are 0.16A Slow Blow (Little Fuse

218.160). For 220V operation use 0.08A
(Little Fuse 218.080) Slow Blow fuses.
EXAMPLE: United States of America; set
to 110VA. The unit is supplied with a IEC
power connector next to the voltage select
switch, plug the power cord into the
connector until it is firmly seated. You
may now connect the power cord into
your AC outlet.

IEC Power Connector

110 / 220VA Switch

Fuse Drawer

110

MASTER DTE/ DCE

220

Factory Configuration Switch Settings

The 3080/V24 (CTS DSD-8) is configured prior to shipment with the switches set to the
following default positions:

Switch 27 - 6 OFF, 1,2,3,4 and 5 ON.
TX Clock Source = Master, pin 15

Chassis Ground not connected to Signal Ground
Switch 28 - 4 and 5 OFF, 1,2,3 and 6 ON.

RX Clock Source = Master
Anti-Stream timer = 16K bits

Switch 29 - 1, 2 and 4 to OFF, 3,5 and 6 ON.
No Data Time Out = 2048 bits

Anti-Stream = Enabled
Broadcast Data to Sub-Channels
Sub-Channel Activity Indicated by Interface Control (RTS/DCD)

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PATTON ELECTRONICS CO.

3080/V24

Switch 30 - 1 and 2 OFF, 3, 4, 5 and 6 ON
Internal Baud Rate = 9600, Normal

Fallback Clock Source = Data Transitions
Fallback Clock = Disabled

Switch 31 - 2 and 3 to OFF, 1,4,5 and 6 to ON
Sync Mode

Contention Mode = Scan
CTS Delay = 1 mS

If the system application requires one or more of the default settings to be changed, it will be
necessary to remove the top cover of the enclosure to access and change the DIP switches
located on the printed circuit board.

Disassembly

Remove the top cover by removing the phillips head screws located on the left and right sides
of the 3080/V24 (CTS DSD-8). DTE/DCE switches SW9 through SW26, interface Jumpers
J4 through J14 and configuration switches SW27 through SW31 are located on the PCB as
indicated on the strapping guide in the Appendix of this manual. After the switch selection
activity is completed,

re-install the top cover BEFORE connecting to a AC power source

Installation

Select an appropriate location accessible to and within six feet of an AC power outlet, the
outlet must have a ground pin receptacle for product warranty. The DCE-to-DTE cabling
between each attached device and the 3080/V24 (CTS DSD-8) should be “Straight Through”,
shielded and terminated with male connectors. Sub-Channels are marked PORT 1 through
PORT 8, the Master Port is marked, MASTER DCE/DTE. If any terminal has a priority service
mode, ensure it is connected to the port connector designated “PORT 1” on the rear panel of
the 3080/V24 (CTS DSD-8). Secure other terminals or Modems to be serviced to the
remaining “PORT” connectors. Connect the MODEM or TERMINAL to the connector
designated “MASTER DTE/DCE”.

Equipment Grounding (SW27-6)

(default OFF)

.

Switch SW27-6 provides for grounding interconnection in those systems requiring a
connection between (Frame Ground) and (Signal Ground). Connect ONLY if required.

SETUP & INSTALLATION

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3080/V24

CTS Delay (SW31-3,4,5)

If a CTS delay is desired, set SW31-3, 4 and 5 to the required value as indicated below.

SW31-3 SW31-4 SW31-5 Time

ON ON ON No Delay

OFF ON ON 1mS

ON OFF ON 2mS

OFF OFF ON 4mS

ON ON OFF 9mS

OFF ON OFF 18mS

ON OFF OFF 36mS

OFF OFF OFF 72mS

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Anti-Streaming (SW28-4,5,6 and SW29-3)

The maximum data block size is user selectable via switch SW28- 4, 5 and 6. As shown
below eight block sizes are provided to the user. To disable anti-streaming set SW29-3 to the
OFF position. The maximum block size is normally defined at the time of installation.

SW28-4 SW28-5 SW28-6 CLOCKS

ON ON ON 1024

OFF ON ON 2048

ON OFF ON 4096

OFF OFF ON 16 K

ON ON OFF 64 K

OFF ON OFF 256 K

ON OFF OFF 1 MEG

OFF OFF OFF 2 MEG

Receive Data Mode (SW29-4)

(default OFF)

Setting switch SW29-4 to ON sets the DSD-8 into the Gated Mode. Only the Sub-Channel that
is currently active will receive the data from the master port. Setting position 4 to OFF enables
the Broadcast mode. Receive Data from the Master Port is sent to all Sub-Channels.

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3080/V24

Control Turn-Off Delay in “DATA” Switching Mode (SW29-1,2)

When configured to switch on DATA, switch SW29-1 and 2 set the Sub-Channel release time
in clocks. The value selected is the number of clocks at the current baud rate that must occur
without any data transitions on the Sub-Channel to indicate that Sub-Channel has completed
its transmission and the 3080/V24 (CTS DSD-8) can resume servicing the other Sub­Channels. The following table should be used to set this time period.

SW29-1 SW29-2 CLOCKS

ON ON 16

ON OFF 64
OFF ON 256
OFF OFF 2048

Switch on Data / Control (SW29-5,6)

(default 5-ON, 6-ON)

Sub-channels are selectable for switch on DATA or switch on an active interface control lead
in groups of 4 Sub-Channels. Set SW29 pos 5 to OFF if you want Sub-channels 1 thru 4 set to
switch on

"Data Transitions"

. Set pos 5 to ON if you want them to be set to switch on

"Interface Lead". SW29 pos 6 is associated with sub-channels 5 thru 8.

Internal Baud Rates (SW30-1,2,3,4)

Switch SW30-1, 2, 3 and 4 select the master clock rate when Internal Clock Source is selected
on TX Clock Source or RX Clock Source. In addition the fallback clock rate is also selected
with this option. When fallback clocking is required, the RX Clock Source and TX Clock
Source should NOT be set to INTERNAL. Selecting CHAN 6 RXC allows fallback clocks to
originate from Sub-Channel 6 pin 17. The following table shows the available rates. If CHAN
6 RXC is selected, SW30-4 can be in either position.

SW30-1 SW30-2 SW30-3 Pos 4=ON Pos 4=OFF

ON ON ON 76,800 57,600

OFF ON ON 38,400 28,800

ON OFF ON 19,200 14,400

OFF OFF ON 9,600 7,200

ON ON OFF 4,800 3,600

OFF ON OFF 2,400 1,800

ON OFF OFF 1,200 900

OFF OFF OFF CHAN 6 RXC

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Fallback Clock Enable (SW-30-6)

(default ON)

If Clock Fallback is required when the primary clock fails, set switch SW30-6 to OFF. If
Fallback is not required set SW30-6 to ON. The Fallback clock rate is selected with the
internal baud rate option. When enabled, the Front Panel FBC LED will light if clock Fallback
occurs.

Fallback Clocking From Sub-Channel 6 (SW30-1,2,3)

To use the Sub-Channel 6 RX Clock as the fallback clock set SW30-1, 2 and 3 to OFF. Any
other position will select some internal clock rate as called out in the Internal Baud Rates
section.

Fallback Mode Selection (SW30-5)

Only Sub-channel 6 can be used as the fallback clock

(default ON)

.

If Fallback is required, two modes are available via switch SW30-5. To fallback when the
transitions from the primary clock source stop, set SW30-5 to ON. To fallback when DCD on
Sub-Channel 1 becomes inactive, set SW30-5 to OFF.

NOTE: Both TX and RX Clock Source Select MUST Be Set !!!!

TX Clock Source Selection (SW27--1,2,3)

TX Clock Source is selected by switch SW27-1, 2 and 3. The following table indicates the
source options provided by the 3080/V24 (CTS DSD-8).

SW27-1 SW27-2 SW27-3 Source

ON ON ON Master

OFF ON ON Port 1

ON OFF ON Port 2

OFF OFF ON Port 3

ON ON OFF Port 4

OFF ON OFF Port 5

ON OFF OFF Port 6

OFF OFF OFF Internal

TX Clock Pin Selection (SW27-4)

(default ON)

The primary transmit clock can be derived from either pin 15 or 24. If pin 15 is to be the
source for primary TX Clock, set SW27-4 to ON. If pin 24 is to be the source for primary TX
and RX Clock, set SW27-4 to OFF.

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PATTON ELECTRONICS CO.

3080/V24

RX Clock Source Selection (SW28-1,2,3)

RX Clock Source is selected by SW28-1, 2 and 3. The following table indicates the source
options provided by the 3080/V24 (CTS DSD-8). NOTE: If TXC Source is pin 24 That clock
will be used as the RXC also.

SW28-1 SW28-2 SW28-3 Source

ON ON ON Master

OFF ON ON Port 1

ON OFF ON Port 2

OFF OFF ON Port 3

ON ON OFF Port 4

OFF ON OFF Port 5

ON OFF OFF Port 6

OFF OFF OFF Internal

Tail Circuit Buffer (SW31-1)

(default ON)

The 3080/V24 (CTS DSD-8) has a Tail Circuit Buffer that is automatically selected when a
Sub-Channel is set as a DTE. The buffer will provide clock synchronization of the data from
the Sub-Channel to the Master Port for Tail Circuit operations. The buffer is de-activated when
the Sub-Channel is configured as a DCE. When operating in an asynchronous environment
the Buffer must be bypassed. To bypass the buffer in a synchronous or asynchronous
application, set switch SW31-1 to OFF (ASYNC). For normal operation in a synchronous
environment set SW31-1 to ON (SYNC). When using a tail circuit modem with the 3080/V24
(CTS DSD-8), the modem connected to the Sub-Channel, should be set to External Transmit
Clocking. The modem at the remote end of the connection should be set to RX-TX Clocking
or Slaved TX Clock. This will insure the same clock is present throughout the network and
clock slippage will not occur.

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Port DCE/DTE Selection (SW9 thru SW26)

Slide switches SW9 through SW26 are used to configure DTE/DCE for each port. Slide Both
switches associated with a port to the same position.

Example:

If connecting a modem (DCE
Device) to the PORT, then the port should be configured as a DTE interface. Slide both
switches to the DTE position toward the interface connector. If connecting a terminal (DTE) to
the Sub-Channel, the port should be configured as a DCE. Slide both switched to the DCE
position away from the interface connector.

interface that is to be connected to it

. When a port is selected as a DCE, pin 9 and 10 test

The port is always configured opposite to the

voltages are provided to the interface connector if JP4 and JP5 are installed. If the port is
configured as a DTE, pins 9 and 10 are open. JP4 and JP5 control Plus Unreg and Minus
Unreg to all Sub-Channels, therefore it is not possible to have test power on one DCE without
having it on all DCE Sub-Channels.

Test Voltage Enable Pins 9 & 10 (JP4 & JP5)

Pin 9 and Pin 10 unregulated power is provided on each DB-25 connector configured as a
DCE if JP4 and JP5 are installed. Pin 9 and 10 unregulated power is not provided to any
connector configured as a DTE regardless of JP4 and JP5 installation.

2-7

SETUP & INSTALLATION

INSTALLATION AND OPERATIONS MANUAL

124001UA

PATTON ELECTRONICS CO.

3080/V24

DTR / DSR Forced Active (JP6 thru JP14)

DTR is tied to DSR on each of the Sub-Channel ports. If the device connected does not
supply a DTR but requires DSR (DTE) or does not supply DSR but requires DTR (DCE),
installing the forced DTR/DSR jumper (JP6-JP14) for the appropriate Sub-Channel will solve
this problem. The line is forced to +6V via an 100Ω resistor, providing isolation to any driver
that might be on the interface.

Channel Jumper Channel Jumper

Master JP6 5 JP11

1 JP7 6 JP12
2 JP8 7 JP13
3 JP9 8 JP14
4 JP10

FACTORY Test Jumpers (JP1, JP2 and JP3)

The three factory test jumpers JP1, 2 and 3, must be installed for the unit to properly function.
These jumpers are used in the manufacture and test of the product prior to shipment.

SETUP & INSTALLATION

2-8

APPENDIX

g

g

g

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3080/V24

124001UA

Leased

or

Dial Line

RXC-17

RS-423 MODEM

Host

Data

TXC-15

Internal

TX Clocking

Data

Modem

3080/V24

3080/V24

Modem

Slave

TX Clocking

RS-423

Dial Line

RS-423 MODEM

Typical Application

Data

RXC-17

XTXC-24

TXC-15

Data

Buffer

3080/V24

Leased

or

RS-423

Modem

TX Clocking

Data

RXC-17

Data

RS-423 MODEM

RS-423

External

XTXC-24

Leased

or

Dial Line

RS-423 RS-423

RS-423

Modem

Slave

TX Clocking

XTXC-24

RXC-17TXC-15

Termi nal

Data

Typical Tail Circuit Configuration

DB-2 5 RS-232

Transmit Clo ck (f rom DCE)

Receive Clo ck ( from DCE)

Data Terminal Ready (from DTE)

External Transmit Clock (from DTE)

Interface Pins Supported

14
15
16
17
18
19
20

21
22
23
24
25

A-1

Shield ( common)

1

Transmit Data (from DTE)

2
3

Rece ive Data (from DCE)

4

Request to Send (from DTE)
Clear To Send (from DCE)

5
6

Data Set Ready (from DCE)

7

Si

nal Ground (common)

8

Data Carrier Detect (from DCE)

9

10

+ Volta

- Volta

e

e
11
12
13

APPENDIX

124001UA

3080/V24

INSTALLATION AND OPERATIONS MANUALPATTON ELECTRONICS CO.

Master Port is a DTE

Channel Port is a DTE

Pin 3 RXD Pin 2 TXD

Pin 2 TXD

Pin 4 RTS

Pin 5 CTS

Pin 6 DSR

Pin 8 DCD

Pin 20 DTR

Pin 15 TXC

Pin 17 RXC

Pin 24 ETXC

Buffer

Clk InClk Out

Switch Control

Master TX Clock

Selection Logic

Master RX Cl ock

Selection Logic

Master DTE / Sub-Channel DTE Interface Flow Diagram

+6v

Pin 3 RXD

Pin 4 RTS

Pin 5 CTS

Pin 6 DSR

Pin 8 DCD

Pin 20 DTR

Pin 15 TXC

Pin 17 RXC

Pin 24 ETXC

APPENDIX

Maste r Po r t i s a DT E

Channel Port is a DCE

Pin 3 RXD Pin 3 RX D

Pin 2 TXD

Pin 4 RTS

Pin 5 CTS

Pin 6 DSR

Pin 8 DCD

Pi n 20 DTR

Pin 15 TXC

Pin 17 RXC

Pin 24 ETXC

Switch Control

Master TX Clock

Selection Logic

Mast er RX Cl ock

Sel ection Logic

Master DTE / Sub-Channel DCE Interface Flow Diagram

A-2

Pin 2 TXD

Pin 4 RTS

Pin 5 CTS

Pin 6 DSR

Pin 8 DCD

Pin 20 DTR

Pin 15 TXC

Pin 17 RXC

Pin 24 ETXC

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3080/V24

124001UA

1

Master Port is a DCE

Channel Port is a DCE

Pin 2 TXD Pin 3 RXD

Pin 3 RXD

Switch Control

Pin 4 RTS
Pin 5 CTS

Pin 6 DSR

+6v

+6v

Pin 8 DCD

Pin 20 DTR Pin 20 DTR

Pin 15 TXC

Pin 17 RXC

Pin 24 ETXC

Master DCE / Sub-Channel DCE Interface Flow Diagram

Master TX Cl ock

Selection Logic

Master RX Clock

Selection Logic

Pin 2 TXD

Pin 4 RTS

Pin 5 CTS

Pin 6 DSR

Pin 8 DCD

Pin 15 TXC

Pin 17 RXC

Pin 24 ETXC

Master Port is a DCE

Pin 2 TXD

Pin 3 RXD

Pi n 4 RTS

Pin 5 CTS

Pin 6 DSR

+6v

Pin 8 DCD

Pin 20 DTR

Pin 15 TXC

Pin 17 RXC

Pin 24 ETXC

Master DCE / Sub-Channel DTE Interface Flow Diagram

Buffer

Master TX Clock

Selection Logic

Master RX Clock

Selection Logic

A-3

Channel Port is a DTE

Pin 2 TXD

Pin 3 RXD

Clk InClk Out

Switch Control

+6v

Pin 4 RTS

Pin 5 CTS

Pin 6 DSR

Pin 8 DCD

Pin 20 DTR

Pin 15 TXC

Pin 17 RXC

Pin 24 ETXC

APPENDIX

3080/V24

124001UA

TECHNICAL SPECIFICATIONS

INSTALLATION AND OPERATIONS MANUALPATTON ELECTRONICS CO.

Applications

Multiple Sync or Async DCE or DTE devices
sharing one DCE or DTE link

Capacity

One to Eight Sync or Async DTE or DCE
devices One DCE or DTE Master Channel

Data Format

Data transparent at all data rates

Data Rates

Up to 76,800bps

Timing

Internal: .......DIP switch selectable

Normal: ....... From Modem

External:...... Clock provided on Sub-Channels

1-6

Anti-streaming

Automatic:Selectable timeout intervals or
disable

Terminal Service Modes

Sub-Channel Interface

EIA RS-232 female connectors (DB-25) using
RS-423 electrical characteristics.

Modem Interface

EIA RS-232 female connector (DB-25) using RS­423 electrical characteristics.

Front Panel

Indicators: ..... Power, Send/Receive Data, Clock

Fallback, Sub-Channel Active,
Sub-Channel Stream

Switches: ...... Enable/Disable each Sub-Channel

Power Source

100-120/200-240 Vac, 50 to 60 Hz, 0.16/0.08 A,
Switch Selectable, 7 Watts

Certifications

MET, c-MET, CE

Dimensions

Height: ...... 1.75 inches (4.44 cm)

Width:....... 17.00 inches (43.18 cm)

Length: .....11.00 inches (18.93 cm)

Scanning Mode: .......Channels are continuously

scanned for activity on a
sequential basis.

Priority Mode: ...........Channels are

simultaniously monitored
channel one has highest
access

APPENDIX

Weight

4.5 lbs (2.1 Kg)

A-4

3080/V24

124001UA

A-5

APPENDIX

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

RXDTXDPWR

MASTER

PORT

SW9 SW10

PORT 1 PORT 2 PORT 3 PORT 4 PORT 5 PORT 6 PORT 7 PORT 8

SW11 SW12 SW13 SW14 SW15 SW16 SW17 SW18 SW19 SW20 SW21 SW22 SW23 SW24 SW25 SW26

DCE

DTE

DCE

DTE

Port 3

JP3

JP5

JP2

JP1

Channel Active Anti-Stream

Pin 9 Enable
(Pos Unreg)

Fact ory Test

STRAPS

MUST BE

INSTALLED

Port Enable / Disable

Enabled= GREEN / Disabled=BLACK

Master

Port 2

Port 1

Po rt 4

Port 7

Port 8

Port 5

Port 6

SW29

Chan 1-4 Switch on RTS=ON / Data=OFF

Anti-Stream En abl ed= O N / Disab led =O FF
Data From Maste r Gated=ON / B roadcast=OFF

Signal & Chassis Gnd Connected =ON

12345678 12345678

SW30

SW28

RXC Source Select

SW31

CTS Delay Select

TXC From Pin15= ON / From P in 24=OFF

TXC Source Select

Anti-Stream Ti mer SW28

6

ON
ON
ON

ON
OFF
OFF
OFF
OFF

5

ON

ON
OFF
OFF

ON

ON
OFF
OFF

4

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Count

102 4
204 8
409 6
16K
64K
256K
1M
2M

TXC Source SW27

3

ON
ON
ON

ON
OFF
OFF
OFF
OFF

2

ON

ON
OFF
OFF

ON

ON
OFF
OFF

1

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Clk Source

Master
Po rt 1
Po rt 2
Po rt 3
Po rt 4
Po rt 5
Po rt 6
In ter na l

Port 1

Port 2

Port 3

Port 4

Port 5

Port 6

Port 7

Port 8

Priority=ON / Scan=OFF

Normal=ON / 3/4=OFF

Baud Rate Select

Fallback Disa bl ed=ON / Ena bl ed=OFF

RX Clock Source SW28

RTS-CT S Delay S W3 1

Data Inacti vityTime SW29

3

ON
ON
ON

ON
OFF
OFF
OFF
OFF

2

ON

ON
OFF
OFF

ON

ON
OFF
OFF

1

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Source

Master
Por t 1
Por t 2
Por t 3
Por t 4
Por t 5
Por t 6
Inter nal

4

ON

ON
OFF
OFF

ON

ON
OFF
OFF

3

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Time

No De lay
1 mS
2 mS
4mS
9mS
18mS
36mS
72mS

1

ON

ON
OFF
OFF

2

ON

OFF

ON

OFF

Count

16
64
256
2048

SW27

Sync=ON / Async=OFF

Fallback On No CLK Transitions=ON / DCD Inactive=OFF

Chan 5-8 Switch on RTS=ON / Data=OFF

Anit-Stream Timeout Select

Unused

Unused

Pin 10 Enable

(Ne g Unreg)

5

ON
ON
ON

ON
OFF
OFF
OFF
OFF

Internal Baud Rate SW30

3

ON
ON
ON

ON
OFF
OFF
OFF
OFF

2

ON

ON
OFF
OFF

ON

ON
OFF
OFF

1

ON
OFF
ON
OFF
ON
OFF
ON
OFF

FBC

JP4

ONOFF

123456

ONOFF

123456

Switch On Data Inactivity Select

ONOFF

123456

ONOFF

123456

ONOFF

123456

JP6

JP7

JP8 JP9 JP10 JP11 JP12 JP13 JP14

JP6 thru JP14 Force DTR/DSR Active When Installed

Sub -Channel 6 RXC

Normal Rates

76800
38400
19200
960 0
480 0
240 0
120 0

¾ Rates

57600
28800
14400

720 0
360 0
180 0

900

B

7622 Rickenbacker Drive
Gaithersburg, MD 20879

Sales: 301 975-1000 Support: 301 975-1007
Web Address: www.patton.com