MODEM ELIMINATOR, V.35
Doc #: 113001UA
Part #: 07M1205P-A
1205P
(CTS ME-V.35)
INSTALLATION AND OPERATIONS MANUAL
An ISO-9001
Certified Company
Copyright© 2000 Patton Electronics Co., All Rights Reserved
PATTON ELECTRONICS CO. ME-V.35 INSTALLATION AND OPERATIONS MANUAL
(1205P)
113001UA
COPYRIGHT NOTICE
Copyright© 2000 Patton Electronics Co., All Rights Reserved.
PROPRIET AR Y 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liability for losses incurred as a result of out-of-date or incorrect information contained in this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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PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
113001UA
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. ME-V.35 INSTALLATION AND OPERATIONS MANUAL
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TABLE OF CONTENTS
CHAPTER 1 - OPERATION
Clocking ............................................................................................................................ 1-1
Delaying CTS .................................................................................................................... 1-1
Controlling Carrier Detect................................................................................................. 1-1
Controlling DSR ................................................................................................................ 1-2
Power ................................................................................................................................ 1-2
Approvals .......................................................................................................................... 1-2
Available Options .............................................................................................................. 1-2
CHAPTER 2 - SETUP AND INSTALLATION
Power Connection............................................................................................................. 2-1
Factory Configuration Switch Settings .............................................................................. 2-1
Disassembly...................................................................................................................... 2-2
Installation ......................................................................................................................... 2-2
Equipment Grounding (JP4).............................................................................................. 2-2
CTS Delay, Port 1 (SW2-1,2) ............................................................................................ 2-2
CTS Delay, Port 2 (SW2-4,5) ............................................................................................ 2-3
DSR Control, Port 1 (SW1-6) ............................................................................................ 2-3
DSR Control, Port 2 (SW1-5) ............................................................................................ 2-3
DCD Control, Port 1 (SW2-6) ............................................................................................ 2-3
DCD Control, Port 2 (SW2-3) ............................................................................................ 2-3
Clock Source, Port 1 (JP6)................................................................................................ 2-3
Clock Source, Port 2 (JP5)................................................................................................ 2-4
Internal Baud Rate Selection (SW1-1,2,3,4) ..................................................................... 2-4
High Speed Option Rates (JP7,JP8,JP9,JP10) ................................................................ 2-5
Factory Test Jumpers (JP1,JP2,JP3)................................................................................ 2-5
APPENDIX
Connector Pins Used ........................................................................................................A-1
Signal Flow Diagram .........................................................................................................A-1
Strapping Guide ................................................................................................................A-2
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PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
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CHAPTER 1 - OPERATION
The 1205P (CTS ME-V.35) is a cost effective solution for interconnection of V.35 terminal
devices located in proximity of each other. The use of two modems is eliminated with a
resulting cost savings to the user. The 1205P (CTS ME-V.35) complies with the CCITT V.35
balanced interface specification. Two 34 pin V.35 (MR-34) connectors are provided to
interface to the V.35 terminals.
Clocking
The Modem Eliminator can be either internally or externally clocked independently on each
Port. Rates up to 2.048Mbps are provided by the internal baud rate generator. The generator
will provide clocks for both terminal and insure the data is synchronized with the RX Clock in
both directions.
Delaying CTS
Request to Send (RTS) is looped back to Clear to Send (CTS) on each Port. To allow
terminals requiring CTS delays to function properly, selectable delays of Constant, 0 mS, 8mS
and 50mS of RTS to CTS delay is provided. Each Port ins individually configured for CTS
delay.
Controlling Carrier Detect
RTS on each port is also routed to Data Carrier Detect (DCD) on the other port. When DCD
is set to follow RTS, the same delay that is added to CTS is added to DCD. DCD can be
also be forced to constant active by configuration switches.
PWR TD RD RTS CTS CD TXC RXC
1-1
INTERNATION AL
SERIES
1205P
OPERATION
PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
113001UA
Controlling DSR
Data Terminal Ready (DTR) on each port is routed to the Data Set Ready (DSR) pin of the
other port. DSR can be configured to follow the DTR or can be forced to be active all the time.
Power
110 or 220 Volt operation is provided by a convenient switch located on the rear panel of the
1205P (CTS ME-V.35). Simply install the proper fuses (110VAC - .16ASB, 250V or 220VAC
- .8ASB, 250V) and power plug for the country of use and select the proper line voltage and
the unit is ready for operation.
Approvals
Safety approvals for UL & CSA have been granted allowing the Modem Eliminator. FCC Part
15 class A emissions approvals insure the Modem Eliminator will not interfere with any of the
other equipment in your data center. The Model 1205P Serieshas been tested and found to
comply with the limits for a Class A computing device 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.
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 V oltage
Directive (L VD) of the Union European (EU). A Certificate of Compliance is available by
contacting T echnical Support.
Available Options
1205P is available in both stand-alone subset or rack-mountable versions (1205PRC).
Various configurations of the interface are also available from the factory. The 1205PRC fits
into the Model 1010R16 16 Card Rack Assembly.
OPERATION
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PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
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Caution, Disconnect the POWER Before Removing The Cover
Vorsicht, Befor Deckung Abnehmen Mach Strom Zu.
CHAPTER 2 - SETUP AND INSTALLATION
Power Connection
Before connecting the 1205P (CTS ME-V.35) 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/
220VAC voltage switch, turn the switch with a
coin or screw driver to the appropriate voltage
for your country. EXAMPLE: In the United
States of America; 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.
110
220
100-120V
0.16ASB,250V
TO.16A,250V
200-240V
0.08ASB,250V
TO 0.08A,250V
110 / 220VA Switch
Fus e Drawer
CAUTION
FIRE, REPLACE O N LY
WITH SAM E TYP E
AND RA T ING F U SE.
IEC Power Connector
*
: FOR CONTINUED PROTECTION AGAINST RISK
PORT 1
B F L R V
D J N T
K
A E P
C H S W AA
U Y
Z DD JJ
X
BB FF LL
CC HH MM
EE KKM
NN
* Switch Fuse for 100-120V (.16ASB, 250) or 200-
Factory Configuration Switch Settings
240V (.8ASB, 250) as noted on rear of unit.
The 1205P (CTS ME-V.35) is configured prior to shipment with the switches set to the
following default positions:
Switch 1 - 2 and 3 to OFF, 1, 4, 5 and 6 to ON.
Baud Rate = 64Kbps
Port 1 DSR Follows Port 2 DTR
Port 2 DSR Follows Port 1 DTR
Switch 2 - 1 and 4 to OFF, 2, 3, 5 and 6 to ON.
Port 1 CTS Delay = 0
Port 2 CTS Delay = 0
Port 1 DCD Follows Port 2 RTS
Port 2 DCD Follows Port 1 RTS
JP1 - JP3 always connected
JP4 - Open
JP5 - INTernal Clock
JP6 - INTernal Clock
HS Option
JP7 - Open
JP8 - Open
JP9 - Open
JP10 - Open
2-1
SETUP & INSTALLATION
PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
113001UA
If the system application requires one of 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 or
Jumpers 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 1205P (CTS ME-V.35). The configuration switches and Jumpers 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 an 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.
“Straight Through”
shielded
cables, terminated in male V.35 (MR-34) connectors should be used to connect the two
terminals to the 1205P (CTS ME-V.35). Set the switches and Jumpers to match the required
configuration using the descriptions in this chapter and the strapping guide in the appendix.
Equipment Grounding (JP4)
JP4 provides for grounding interconnection in those systems requiring a connection between
(Frame Ground) and (Signal Ground).
Connect ONLY if required.
CTS Delay, Port 1 (SW2-1,2)
SW2 position 1 and 2 selects RTS to CTS delay for the terminal connected to PORT 1. RTS
(pin 4) from PORT 1 is looped back to CTS (pin 5) through the delay circuitry.
SW2-1 SW2 -2 DELAY
ON ON Const
OFF ON 0mS
ON OFF 8mS
OFF OFF 50mS
SETUP & INSTALLATION
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PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
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CTS Delay, Port 2 (SW2-4,5)
SW2 position 4 and 5 selects RTS to CTS delay for the terminal connected to PORT 2. RTS
(pin 4) from PORT 2 is looped back to CTS (pin 5) through the delay circuitry.
SW2-4 SW2-5 DELAY
ON ON Const
OFF ON 0mS
ON OFF 8mS
OFF OFF 50mS
DSR Control, Port 1 (SW1-6)
SW1 position 6 selects DSR control for the terminal connected to Port 2. Set SW1 position 6
to ON to select DSR on Port 2 switching in response to DTR from Port 1 switching. Set SW1
position 6 to OFF to set DSR on Port 2 to be forced ON.
DSR Control, Port 2 (SW1-5)
SW1 position 5 selects DSR control for the terminal connected to Port 1. Set SW1 position 5
to ON to select DSR on Port 1 switching in response to DTR from Port 2 switching. Set SW1
position 5 to OFF to set DSR on Port 2 to be forced ON.
DCD Control, Port 1 (SW2-6)
SW2 position 6 selects DCD control for the terminal connected to Port 2. Set SW2 position 6
to ON to select DCD on Port 2 switching in response to RTS from Port 1 switching. Set SW2
position 6 to OFF to set DCD on Port 2 to be forced ON.
DCD Control, Port 2 (SW2-3)
SW2 position 3 selects DCD control for the terminal connected to Port 1. Set SW2 position 3
to ON to select DCD on Port 1 switching in response to RTS from Port 2 switching. Set SW2
position 3 to OFF to set DCD on Port 1 to be forced ON.
Clock Source, Port 1 (JP6)
Port 1 clock selection is accomplished via JP6. To select the internal baud rate generator as
the clock source install the jumper on the side marked INT. To use an external source
provided on Port 2 Pins W & U, install the Jumper on the side marked EXT.
2-3
SETUP & INSTALLATION
PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
113001UA
Clock Source, Port 2 (JP5)
Port 1 clock selection is accomplished via JP5. To select the internal baud rate generator as
the clock source install the jumper on the side marked INT. To use an external source provided
on Port 1 Pins W & U, install the Jumper on the side marked EXT.
Internal Baud Rate Selection (SW1-1,2,3,4)
Selection of internal rates is provided by configuration of SW1 positions 1 through 4 and JP7
through JP10 if the High Speed Option has been installed by the factory. The following table
show the rates available:
SW1-1 SW1- 2 SW1-3 SW1 -4 RATE
ON ON ON ON HS Mode
OFF ON ON ON 768K
ON OFF ON ON 384K
OFF OFF ON ON 192K
ON ON OFF ON 128K
OFF ON OFF ON 72K
ON OFF OFF ON 64K*
OFF OFF OFF ON 57.6K
ON ON ON OFF 56K
OFF ON ON OFF 48K
ON OFF ON OFF 38.4K
OFF OFF ON OFF 28.8K
ON ON OFF OFF 19.2K
OFF ON OFF OFF 14.4K
ON OFF OFF OFF 9.6K
OFF OFF OFF OFF 4.8K
* Indicates Default
SETUP & INSTALLATION
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PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
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High Speed Option Rates (JP7,JP8,JP9,JP10)
If the high speed option is installed the following rates can be utilized by setting SW1 positions
1 through 4 to ON:
JP10 Installed JP7, JP8 & JP9 Removed - 256K
JP9 Installed JP7, JP8 & JP10 Removed - 512K
JP8 Installed JP7, JP9 & JP10 Removed - 1.024M
JP7 Installed JP8, JP9 & JP10 Removed - 2.048M
Factory Test Jumpers (JP1,JP2,JP3)
The factory test jumpers must be installed for the Modem eliminator to properly function. Insure
these jumpers are installed prior to operation of the unit.
2-5
SETUP & INSTALLATION
PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
,
APPENDIX
Technical Specifications
113001UA
Application
Interconnect two V.35 terminal
type devices
Capacity
Two V.35 Sync or Async
Terminals
Data Format
Data is Transparent
A- Fram e Gnd
B - Signal Gn d
C - RTS
D - CTS
F - DCD
E - D SR
H - DTR
P,S - TD
R,T - RD
Data Rates
4.8K, 9.6K, 14.4K, 19.2K,
28.8K, 38.4K. 48K, 56K,
57.6K, 64K, 72K, 128K, 192K,
384K, 768Kbps, 256K, 512K,
1024K & 2048K
Timing
Internal Baud Rate Generator
Front Panel
Indicators: ...Power, RD, TD,
Port 2Port 1
Fr am e Gnd - A
Signal Gnd - B
RTS - C
CTS - D
DCD - F
DSR - E
DTR - H
TD - P,S
RD - R,T
CTS, RTS,
DCD, TT, RT
Channel Interface
Two CCITT V.35 female
connectors (MR-34)
Power Source
100-120/200-240VAC, 50 to
60Hz, 0.16/0.08A switchable
Environmental
Oper Temp: ... 32° to 122°F
(0° to 50°C)
Rel Humidity:.. 5 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)
Y,AA - TT
V,X - RT
W - E TT
U
BSGFCDL R
CTS
D
FGEDSR
A
RTSHDTR
C
CLOCK
GENERATOR
Signal Flow Diagram
RD(A)VRT(A)
Z DD JJ
RT(B)
RD(B)
J N T
TD(A)
K
P
TD(B)
U Y
S
BB FF LL
X
TT(A)
TT(B)
W AA
Connector Pins Used
TT - Y,AA
RT - V,X
ETT - U,W
NN
CC HH MM
EE KKM
A-1
APPENDIX
SW1
Install Only One Jumper to
Select the Required Rate
Power
TD
RD
RS
CS
CD
TC
ONLY O N THE OPTIONAL
256Kbps HS Optio n
HS VERSION
RC
JP10
123456
Baud Rate Sele ct
Port2 DSR O N= Switched, OF F=Co ns t
Port1 DSR O N= Switched, OF F=Co ns t
ONOFF
JP6 - Port 1 Clk Source
INT
EXT
JP5 - Port 2 Clk Sou rc e
INT
EXT
Port 2
2.048Mbps HS Option
1.024Mbps HS Option
512Kbps HS Optio n
Port 1 CTS Delay SW2
2
ON.
ON
OFF
OFF
5
ON.
ON
OFF
OFF
Delay
Constant
0 mS
8 mS
50mS
Delay
Constant
0 mS
8 mS
50mS
1
ON
OFF
JP9
JP8
JP7
ON
OFF
Port 2 CTS Delay SW2
4
ON
OFF
ON
OFF
Baud Rate Selec t SW1
2
3
1
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
4
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Speed
HS Option
768K
384K
192K
128K
72K
64K
57.6K
56K
48K
38.4K
28.8K
19.2K
14.4K
9.6K
4.8K
JP4
CGND
TO
DGND
A-2
Port 1
PATTON ELECTRONICS CO. 1205P INSTALLATION AND OPERATIONS MANUAL
113001UA
SW2
123456
Port1 CTS Delay Select
Port2 DCD ON=Switch ed, OFF=Const
Port2 CTS Delay Select
Port1 DCD ON=Switch ed, OFF=Const
ONOFF
JP1 JP3JP2
Factory Test Straps Must be
Ins talled F or Pr oper Op era tion
APPENDIX
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