Patton electronics 3012/V24, 3014/V24, 3018/V24 Manuale utente

Doc #: 137001UA

Part #: 07M3012-A

MODEM SHARING DEVICE

3012/V24 (CTS MSD-2C)

3014/V24 (CTS MSD-4C)

3018/V24 (CTS MSD-8C)

INSTALLATION AND OPERATIONS MANUAL

AnISO-9001

CertifiedCompany

January 3, 2000

Doc #: 137001UA

Part #: 07M3012-A

MODEM SHARING DEVICE

3012/V24 (CTS MSD-2C)

3014/V24 (CTS MSD-4C)

3018/V24 (CTS MSD-8C)

INSTALLATION AND OPERATIONS MANUAL

AnISO-9001

CertifiedCompany

137001UA

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3012-14-18/V24

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Patton assumes no liability for losses incurred as a result of out-of-date or incorrect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

137001UA

iii

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3012-14-18/V24

Table of Contents

CHAPTER 1 - OPERATON

Channel Selection Modes (4 and 8 port only) .................................................. 1-2

Anti-Streaming ............................................................................................ 1-2

Front Panel Indicators and Switches .............................................................. 1-3

CHAPTER 2 - SETUP AND INSTALLATION

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

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

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

Installation.................................................................................................. 2-3

Equipment Grounding (Switch Pos 6).............................................................. 2-3

Anti-Streaming (Switch Pos 1,2,3,4).............................................................. 2-3

Switching Mode Selection (Switch Pos 5) MSD-4C & MSD-8C Only ..................... 2-4

CTS Delay on the MDS-2C (Switch Pos 5) ....................................................... 2-4

CTS Delay on the MSD-4C & MSD-8C (JP6).................................................... 2-4

Unregulated Power to Pins 9 & 10................................................................ 2-4

Factory Test Jumpers (JP1,JP2,JP3) ............................................................ 2-4

APPENDIX

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

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

RS-232 Pin Out .......................................................................................... A-2

Strapping Guides......................................................................................... A-3

137001UA

1-1 Operation

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3012-14-18/V24

CHAPTER 1 - OPERATON

The Patton MSDs are network enhancement accessories intended for DCE sharing

applications. The Patton MSDs allows up to eight terminals or DTE devices to share

a single point to point or multi-drop polled communication link.

The Patton MSDs allow for immediate expansion of a system without the

requirement of additional Modems or communication lines. All MSDs are protocol

transparent and operate in synchronous or asynchronous environments at rates up

to 38.4Kbps. Clocking is provided by the attached DCE device on the Master Port.

The Patton MSDs have Anti-Streaming capabilities that include selectable time-outs

depending on your system transmission speed, and a setting to disable anti-

streaming for large data block transfers. No special cables or adapters are required

for normal DTE-DCE operation. All interconnects are made via industry standard

female DB-25 connectors located on the rear panel of the units. A linear 110/

220V, UL, CSA and TÜV approved power supply is internal to the unit.

SUB-CHANNEL STATUS

PW SD RD 1 2 3 4 1 2 3 4

ACTIVE STREAM ENABLE/DISABLE

123

MSD-4C

INTERNATIONAL

SERIES

MSD-2C

SUB-CHANNEL STATUS

PW SDRD 1212

ACTIVE STREAM

ENABLE/DISABLE

PW SD RD 12345678 12 3 4 5 6 7 8

ACTIVE STREAM ENABLE/DISABLE

1234567

SUB-CHANNEL STATUS

MSD-8C

137001UA

1-2

Operation

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3012-14-18/V24

Channel Selection Modes (4 and 8 port only)

The Patton MSD provides two selectable sub-channel service modes of operation:

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. Activity is defined as raising RTS on a sub-channel.

In the Scanning Mode the Patton MSD scans each sub-channel in sequence,

beginning with channel 1. This rotational sequence is repeated continually with each

attached sub-channel having equal access to the communications link. When RTS

from a sub-channel becomes active, that sub-channel is given a CTS signal and

switched through to the master port by the MSD. All remaining sub-channels are

locked out until the first device becomes inactive. When the sub-channel device

becomes inactive, the MSD will resume scanning the sub-channels for another active

signal.

When configured for Priority Mode operation, the Patton MSD monitors all sub-

channels simultaneously with sub-channel 1 having the highest priority. When a sub-

channel becomes inactive, the MSD will automatically default to the highest priority

(lowest number) sub-channel with activity.

Port Enable/Disable front panel switches must be pushed in (GREEN indication) for

a sub-channel to access the main channel, regardless of the mode of operation

selected.

Anti-Streaming

A typical problem often encountered in DDS and leased-line, polled environments is a

“Streaming” remote terminal. The streaming problem can tie up an entire circuit until

the offending terminal has recovered or is powered down. A streaming condition

occurs when a sub-channel remains active, disrupting the polling sequence. The MSD

provides two user selectable modes of controlling a streaming condition: an

automatic Anti-Streaming Abort Timer, and a manual Operator Control mode (front

panel push button switch).

The streaming condition caused by one of the attached terminals can be quickly

bypassed by the Patton MSD 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 re-establish normal operation.

137001UA

1-3 Operation

PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL

3012-14-18/V24

Front Panel Indicators and Switches

The front panel LED indicators associated with each sub-channel identify the active

port. A green POWER ON LED indicates when AC voltage is applied. Two adjacent

green LED indicators illuminate in union with individual port activity and identify

Transmit Data (TXD) and Receive Data (RXD) activity.

Positive latching type switches are provided for each DTE port. These switches allow

you to isolate or remove a streaming terminal. The switch is GREEN when the

channel is active. To disable a sub-channel, push in the switch and it will click to the

out position, and turn BLACK.

137001UA

2-1 Setup & Installation

PATTONELECTRONICS CO.3012-14-18/V24 INSTALLATION AND OPERATIONS MANUAL

Power Connection

Before connecting the MSD to an AC power source the top cover must be installed

and secured with the supplied screws. The unit is supplied with a 110/220V voltage

switch. Turn the switch with a coin or

screw driver to the appropriate voltage

for your country. EXAMPLE: United

States of America, set to 110V. The

unit is supplied with an 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.

Factory Configuration Switch Settings

The MSDs are configured prior to shipment with the switches set to the following

default positions:

3012/V24 (CTS MSD-2C)

Switch 3 - positions 4, 5 and 6 to OFF,OFF,

OFF,OFF,

OFF, 1, 2 and 3 to ONON

ONON

Anti-Stream = 40sec. and Disabled

CTS Delay = No Delay

Signal Ground not connected to Chassis Ground

JP4 and JP5 to ININ

ININ

Provide Pin 9 and 10 Test Voltage

JP1, JP2, and JP3 to ININ

ININ

Factory Testing Straps Must be installed

3014/V24 (CTS MSD-4C)

Switch 5 - positions 4 and 6 to OFFOFF

OFFOFF

OFF, 1, 2, 3 and 5 to ONON

ONON

Anti-Stream = 40sec. and Disabled

Switching Mode = Priority

Signal Ground not connected to Chassis Ground

CHAPTER 2 - SETUP AND INSTALLATION

110 / 220VA Switch

Fuse Drawer

IEC Power Connector

110

220

Caution, Disconnect the POWER Before Removing The Cover.

Vorsicht, Befor Deckung Abnehmen Mach Strom Zu.

137001UA

2-2

Setup & Installation

3012-14-18/V24 INSTALLATION AND OPERATIONS MANUALPATTON ELECTRONICS CO.

JP4 and JP5 to ININ

ININ

Provided Pin 9 and 10 Test Voltage

JP6 to OUTOUT

OUTOUT

OUT

CTS delay = No Delay

JP1, JP2 and JP3 to ININ

ININ

Factory Test Jumpers must be installed

3018/V24 (CTS MSD-8C)

Switch 9 - positions 4 and 6 to OFFOFF

OFFOFF

OFF, 1, 2, 3 and 5 to ONON

ONON

Anti-Stream = 40sec. and Disabled

Switching Mode = Priority

Signal Ground not connected to Chassis Ground

JP4 and JP5 to ININ

ININ

Provided Pin 9 and 10 Test Voltage

JP6 to OUTOUT

OUTOUT

OUT

CTS delay = No Delay

JP1, JP2 and JP3 to ININ

ININ

Factory Test Jumpers must be installed

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 unscrewing the phillips head screws located on the left and

right sides of the unit. The configuration switches and jumpers are located on the

PCB as indicated on the appropriate strapping guide in the Appendix of this manual.

After the switch selection activity is completed,

EINSTALL

OVER

BEFORE

ONNECTING

AC P

OWER

OURCE

137001UA

2-3 Setup & Installation

PATTONELECTRONICS CO.3012-14-18/V24 INSTALLATION AND OPERATIONS MANUAL

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 MSD should be “Straight

Through”, shielded and terminated with male DB-25 connectors. Sub-Channels are

marked “PORT 1” through “PORT 8”; the Master Port is marked “MASTER”. 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 MSD. Secure other terminals to be

serviced to the remaining PORT connectors. Connect the MODEM to the connector

designated “MASTER”.

Equipment Grounding (Switch Pos 6)

Position 6 on the DIP switch provides for grounding interconnection in those systems

requiring a connection between (Frame Ground) and (Signal Ground). Connect ONLY

if required.

Anti-Streaming (Switch Pos 1,2,3,4)

The maximum data block size is user selectable via the internal DIP switch positions

1, 2, and 3. As shown below eight block sizes are provided to the user. To disable

anti-streaming set position 4 to OFFOFF

OFFOFF

OFF. The maximum block size is normally defined at

the time of installation. The MSD will isolate the affected sub-channel until the

streaming condition has been corrected, then automatically re-establish

communications as before.

3 2 1 Time

OFF OFF OFF .02 sec

OFF OFF ON .04 sec

OFF ON OFF .08 sec

OFF ON ON .30 sec

ON OFF OFF 1.3 sec

ON OFF ON 5.0 sec

ON ON OFF 20.0 sec

ON ON ON 40.0 sec

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