B
EE
ELASTIC
EE
AA
ASYNCHRONOUS TO
AA
SS
SYNCHRONOUS
SS
II
INTERFACE
II
Doc #: 121001UA
Part #: 07M2012-A
2012
(CTS EASI-2C)
INSTALLATION AND OPERATIONS MANUAL
September 10, 2000
An ISO-9001
Certified Company
Copyright© 2000 Patton Electronics Co., All Rights Reserved
B
EE
ELASTIC
EE
AA
ASYNCHRONOUS TO
AA
SS
SYNCHRONOUS
SS
II
INTERFACE
II
Doc #: 121001UA
Part #: 07M2012-A
2012
(CTS EASI-2C)
INSTALLATION AND OPERATIONS MANUAL
An ISO-9001
Certified Company
Copyright© 2000 Patton Electronics Co., All Rights Reserved
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
121001UA
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 Patton assumes no liability for losses incurred as a result of out-of-date or incorrect information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.
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: (301) 975-1007;
email: support@patton.com;
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
i
INSTALLATION AND OPERATIONS MANUALPATTON ELECTRONICS CO. 2012
121001UA
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 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.
ii
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
121001UA
TABLE OF CONTENTS
CHAPTER 1 - OPERATION
CHAPTER 2 - SETUP AND INSTALLATION
Power Supply...................................................................................................................... 2-1
Factory Configuration ......................................................................................................... 2-1
Installation ................................................................................................................... ........ 2-1
Element Length Selection ................................................................................................... 2-2
Pass Break Key .................................................................................................................. 2-2
Equipment Grounding ......................................................................................................... 2-2
Factory Test Jumper........................................................................................................... 2-2
Baud Rate Selection........................................................................................................... 2-2
Parity Selection................................................................................................................... 2-3
CTS Delay........................................................................................................................... 2-3
APPENDIX
Pin Out Chart ......................................................................................................................A-1
Block Diagram .....................................................................................................................A-1
Technical Specifications ..................................................................................................... A-2
iii
121001UA
INSTALLATION AND OPERATIONS MANUALPATTON ELECTRONICS CO. 2012
iv
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
121001UA
CHAPTER 1 - OPERATION
The Patton 2012 (CTS EASI-2C) is a Full Duplex RS-232 Elastic Asynchronous to
Synchronous Interface adapter using RS-232-C pin-outs on a DB-25 Connector. This
device will take asynchronous data with 5 to 8 data elements and a start, stop and parity bit
and synchronize this data to the clock provided on the synchronous port. Synchronization is
accomplished by buffering the async data in a 2048 byte FIFO to compensate for the sync
clocking rate being slower than the incoming async data. When the async data is slower
than the sync clock rate, additional stop bits are added to the async data to compensate.
Speed selection is via a DIP switch. Clocking rates of 112.5bps through 19,200bps are
available. Selection of the number of data bits is also selectable and is set with the options
switch, located safely inside the housing.
The 2012 (CTS EASI-2C) is designed to operate as a single sided device. This allows
operation for isochronous (clocked asynchronous) and asynchronous devices to
communicate through synchronous modems.
A standard DB-25 female connector is provided on both the asynchronous and synchronous
ports.
The 2012 (CTS EASI-2C) is powered by an internal linear power supply. Safety approvals
have been granted for UL, CSA & TÜV. FCC class A approval has also been passed.
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
TX D
TX D
TX D
TX D
TX D
TX D
TX D
TX D
TX D
TX D
TX D
RX D
RX D
RX D
RX D
RX D
RX D
RX D
RX D
TX D
RX D
RXD
RXD
RXD
PWR
TX D
TX D
TX D
TX D
RXD
RXD
RXD
RX D
Phone Line
2012's in Rack Assembly
Async
Terminal
Modem
Typical Application
Operation1-1
121001UA
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
Operation 1-2
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
110 / 220VA Switch
Fuse Drawer
IEC Power Connector
110
220
121001UA
Caution, Disconnec t the POWER Be for e Removing The Cover
Vorsicht, Befor Deckung Abnehmen Mach S trom Zu.
CHAPTER 2 - SETUP AND INSTALLATION
Power Connection
Before connecting the 2012 (CTS EASI-2C) to an AC power source the top cover must be
installed and secured with the supplied screws.
The unit is supplied with a 110/220VAC voltage
switch, turn the switch with a coin or screw driver
to the appropriate voltage for your country.
EXAMPLE: In the U.S; set to 110VAC. 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.
Factory Configuration
The 2012 (CTS EASI-2C) is configured prior to shipment with the switches and jumpers in
the following default positions:
SW1 - 1 & 2
Jumper JP1 Jumper JP2 -
OFFOFF
OFF (8 bit data)
OFFOFF
OFFOFF
3
OFF (Even Parity)
OFFOFF
OFFOFF
4
OFF (Parity Disabled)
OFFOFF
OFFOFF
5
OFF (Don't Pass Break Key)
OFFOFF
ONON
6
ON (CTS Delay Disabled)
ONON
7, 8,9 &10
OUTOUT
OUT (Chassis Ground and Signal Ground Not connected)
OUTOUT
ININ
IN (Factory Test Jumper Must be in for unit operation)
ININ
ONON
ON (19,200 bps)
ONON
Installation
The 2012 (CTS EASI-2C) is designed to be connected between a synchronous MODEM
and an asynchronous terminal. The connector marked J3 should be plugged into the
asynchronous terminal and the connector marked J2 should be plugged into the MODEM.
2-1 Setup & Installation
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
121001UA
Element Length Selection
Switch 1 positions 1 & 2 control the asynchronous element length. To select 5 bit operation,
set SW1- 1 and SW1-2 to
one stop bit. For 6 bit operation, set SW1-1 to
ONON
ON. This will allow operation with one start bit, 5 data bits and
ONON
ONON
ON and SW1-2 to
ONON
OFFOFF
OFF. This will allow
OFFOFF
operation with one start bit, 6 data bits and one stop bit. For 7 bit operation, set SW1-1 to
OFFOFF
OFF and SW1-2 to
OFFOFF
bit. For 8 bit operation, set SW1-1 to
ONON
ON. This will allow operation with one start bit, 7 data bits and one stop
ONON
OFFOFF
OFF and SW1-2 to
OFFOFF
OFFOFF
OFF. This will allow operation with
OFFOFF
one start bit, 8 data bits and one stop bit or one start bit, 7 data bits one parity bit and one
stop bit. For 8 bit data with a parity bit see the PARITY SELECTION section.
Pass Break Key
SW1-5 controls the break key operation. Set SW1-5 to
ONON
ON if it is required to pass a break
ONON
key from the terminal through the 2012 (CTS EASI-2C) to the terminal on the remote side.
Set SW1-5 to
OFFOFF
OFF if the break key is to be blocked to the remote side.
OFFOFF
Equipment Grounding
JP1 provides grounding interconnection in those systems requiring a connection
between the DB-25 Pin 1 (Frame Ground) and Pin 7 (Signal Ground). Install JP1 if
connection from frame ground to signal ground is required. Remove JP1 if
connection from frame ground and signal ground is not required.
Factory Test JP2
Do Not remove JP2. JP2 is required for Factory testing of the 2012 (CTS EASI-2C) and
MUST be installed for operation of the unit.
Baud Rate Selection
SW1 positions 7 through 10 select the Baud Rate. See the switch selection diagram, on the
following page for switch settings and available rates.
2-2Setup & Installation
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
121001UA
Parity Selection
This option allows 8 bit data with parity to be used with the 2012. Selection of this option
will append a parity bit on the out-going data and look for a parity bit on the in-coming data.
This bit will be stripped and recreated by the EASI and will not be stored in the buffer.
When a character is received, the parity bit will be checked and discarded prior to buffering
the 8 bits of data. When the data is transferred to the synchronous link the selected parity
will be recalculated and appended to the 8 bits of data. To disable this option, set SW1-4 to
OFFOFF
OFF, to enable ninth bit parity set SW1-4 to
OFFOFF
OFFOFF
OFF, Odd parity is selected by setting SW1-3
OFFOFF
ONON
ON. Even parity is selected by setting SW1-3 to
ONON
ONON
ON. For Parity on 7 or less data bits, see the
ONON
ELEMENT LENGTH SELECTION section.
CTS Delay
SW1-6 selects CTS Delay. To select 8 mS of Delay set SW1-6 to
POWER
TXD
ONOFF
SW1
ONON
ON.
ONON
Character Length - SW1
2
1
ON
ON
ON
OFF
OFF
ON
OFF
OFF
Character Length
Even Parity = OFF / Odd Parity ON
Parity Disable = OF F / Enable = ON
Don 't Pass Br eak K ey = O FF / Pa ss Break Ke y = ON
CTS Delay Enabled = OFF / CTS Delay Disabled = ON
Baud Rate Select
JP2 Fact ory T est
Mus t be IN fo r Ope ration
BITS
5
6
8
To Connect Signal to
Chassis Ground JP1 = IN
7
Bau d Rate Select - S W1
OFF
OFF
ON
ON
OFF
OFF
ON
ON
9
8
10=ON
150
OFF
300
ON
600
OFF
120 0
ON
24 00
OFF
48 00
ON
9600
OFF
192 00
ON
7
OFF
OFF
OFF
OFF
ON
ON
ON
ON
JP2
set SW1-6 to
12345678910
OFFOFF
OFF. To select no delay
OFFOFF
JP1
J3
10= OFF
112.5
22 5
450
900
1800
3600
7200
144 00
J2
Terminal
MODEM
PN - 121014B
Power
2-3 Setup & Installation
121001UA
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
2-4Setup & Installation
APPENDIX
Transmit Clock (from DCE used b y EASI
not passed to DTE)
Data Terminal Ready (passed thru EASI from DTE)
14
15
16
17
18
19
20
21
22
23
24
25
INSTALLATION AND OPERATIONS MANUAL2012PATTON ELECTRONICS CO.
1
Shield (common)
Transmit Data (from DTE modified by EASI)
2
3
Receive Data (passed thru EASI from DCE)
4
Request to Send (from DTE modified by EASI)
Clear To Send (passed thru EASI from DCE)
5
Data Set Ready (passed thru EASI from DCE)
6
7
Signal Ground (common)
Data Carrier Detect (passed thru EASI from DCE)
8
9
10
11
12
13
121001UA
J3 Async
TERMINAL
Data In (2)
RTS (4)
CTS (5)
DSR (6)
SGND (7)
DCD (8)
DTR (20)
CGND (1)
DB-25 (V.24) Pin Out Chart
Async to Sync
Converter
Logic
Delay
Logic
J2 Sync
MODEM
Data Out (2)
RTS (4)
Transmit Clock (15)
CTS (5)
DSR (6)
SGND (7)
DCD (8)
DTR (20)
CGND (1)
Block Diagram
A-1 Appendix
PATTON ELECTRONICS CO. 2012 INSTALLATION AND OPERATIONS MANUAL
121001UA
TECHNICAL SPECIFICATIONS
Applications
RS-232 Sync to Async Conversion
Capacity
One Sync RS-232 Modem
One Async RS-232 Terminal
Data Format
Data Coding: ... Asynchronous Standard 5-
9 Data Bits
Data Rates
112.5bps to 19,200bps
Data Interface
EIA RS-232
Approvals
MET, c-MET, CE
Environmental
Operating Temp: .........32° to 122°F (0° to
50°C)
Relative Humidity:.......Up to 90% non-
condensing
Altitude: .......................0 to 10,000 feet
Dimensions
Height:......... 1.75 inches (4.44 cm)
Width: .......... 8.90 inches (22.60 cm)
Length: ........ 10.00 inches (25.40 cm)
Weight
2.50 lbs (1.135 Kg)
RS-232 Physical Interface
Two Female DB-25 Connector
Enclosure
Aluminium
Power Requirements
110 or 220 Volts AC
A-2Appendix
B
7622 Rickenbacker Drive
Gaithersburg, MD 20879
Sales: 301 975-1000 Support: 301 975-1007
Web Address: www.patton.com
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