Patton electronic Power Supply 2702 G703 User Manual

USER  
MANUAL  
MODEL 2702  
G.703 Interface Converter  
Part# 07M2702-UM  
Doc# 08605U2-003  
Rev. C  
SALES OFFICE  
(301) 975-1000  
TECHNICAL SUPPORT  
(301) 975-1007  
Copyright © 2006  
Patton Electronics Company  
All Rights Reserved.  
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Revised 10/26/06  
An ISO-9001  
Certified Company  
 
1.2 RADIO AND TV INTERFERENCE  
1.4 SERVICE INFORMATION  
The Model 2702 generates and uses 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 televi-  
sion reception. The Model 2702 has 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 commer-  
cial installation. However, there is no guarantee that interference will  
not occur in a particular installation. If the Model 2702 does 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).  
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;  
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 Model 2702. Technical Services hours: 8AM to 5PM EST,  
Monday through Friday.  
1.3 CE AND TELECOMMUNICATION APPROVALS  
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 Union European  
(EU). A Certificate of Compliance is available by contacting Technical  
Support.  
The Model 2702 is in compliance with the Telecommunication  
technical requirements CRT-12; 2.048 Mbps digital unstructured  
leased line (D2048U) attachment requirements for terminal equipment  
interface.  
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2.0 GENERAL INFORMATION  
2.3 SUPPORTED APPLICATIONS  
Thank you for your purchase of this Patton Electronics product.  
This product has been thoroughly inspected and tested and is warrant-  
ed for One Year parts and labor. If any questions arise during installa-  
tion or use of the unit, contact Patton Electronics Technical Services at  
(301) 975-1007.  
The Model 2702 provides a E1 network termination between E1  
and customer premises equipment (CPE) such as a router. The Model  
2702 can also be used as a high-speed short haul modem for campus  
applications.  
2.3.1 The 2702 as the Interface between the Telco and CPE  
2.1 FEATURES  
The Model 2702 provides the interface between an E1 multiplexer  
and a router or switch (See below).  
• Converts Synchronous unframed 2 Mbps G.703 to V.35  
• Integral V.35 (M/34) Male connector (6 Pin Cisco router also  
available)  
V.54 Compliant Loopback Diagnostics  
• Easy to Read LEDs for TXD, RSD, ALM, LOTC, TST, and ERR  
• AMI or HDB3 Line Coding  
• Configuration via DIP Switches  
• External 100-240VAC Power Supply  
E1/FE1  
from  
LAN  
Model 2702  
Internet  
64kbps to  
2.042Mbps  
DACS  
Service Provider’s Network  
MUX  
2.2 GENERAL PRODUCT DESCRIPTION  
Customer Site  
The Patton Model 2702 fits into an environment where high-speed  
E1/G.703 services are being offered to customers with Router/FRADS  
and other networking devices. These G.703 Interface Converters are  
required to convert signals from the unstructured, synchronous line  
interface - delivered by the carrier - to a 2 Mbps digital interface  
required by the users networking equipment.  
2.3.2 The 2702 as a High-Speed Short Range Modem  
The Model 2702 can also be installed into high-speed campus  
applications. In this application, a pair of Model 2702 units operate as  
short range modems (See below).  
To accomplish this, the Model 2702 presents a RJ48C interface to  
the line and a V.35 interface to the customer’s device. The V.35 inter-  
face is presented using a Male M/34 connector. Line coding and clock  
options may be selected using internally accessible DIP Switches  
Model 2702  
Model 2702  
Customer Site  
Service Provider’s Network  
If other interfaces are required, you may select our Model 2703 con-  
verter which presents the following interfaces: X.21, RS422/530,  
V.36/RS449 and V.24/RS232. These interfaces are delivered through a  
standard interface cable which connects to the Female DB25 on one  
end and the desired interface on the other end. If other DTE speeds  
are necessary, our Model 2094 connects Fractional E1 at nx64 speeds  
up to 2 Mbps. Please see the interface converter section of the Patton  
Catalogue for the required converter.  
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3.0 CONFIGURATION  
SWITCH SET SUMMARY TABLE  
The Model 2702 features configuration capability via hardware  
switches . This section describes all possible hardware switch configu-  
rations of the Model 2702.  
Position  
SW1  
Function  
Line Coding  
Clock Mode  
Factory Default Selected Option  
Off  
Off  
HDB3  
SW3  
Network  
SW4  
Clock Mode  
Off  
3.1 DIP SWITCH CONFIGURATION  
NOTE: Switches SW2, SW5, SW6, SW7, and SW8 are not used.  
Switch SW1: Line Coding  
The Model 2702 has eight internal DIP switches that allow configu-  
ration for a wide range of applications. The eight switches are  
accessed by opening the plastic case with a small screwdriver. Figure  
1 (below) shows the location of the DIP switches on the bottom of the  
printed circuit board.  
Use Switch SW1 to control the Network Line Coding options. Set  
these options to be the same as the Line Coding given to you by your  
Service Provider. If you are using two Model 2702s together as short  
range modems, set both units identically.  
DIP Switches  
SW4  
Off  
On  
Line Framing & Coding  
HDB3  
AMI  
ON  
OFF  
Line Coding Options:  
High Density Bipolar 3 (HDB3): In HDB3 coding, the transmitter  
deliberately inserts a bipolar violation when excessive zeros  
in the data stream are detected. The receiver recognizes  
these special violations and decodes them as zeros. This  
method enables the network to meet minimum pulse density  
requirements. Use HDB3 unless AMI is required in your  
application .  
Figure 1. Model 2702 bottom view, showing location of DIP switches  
The Model 2702 DIP switches (SW1, SW3 & SW4) can be config-  
ured as either “On” or “Off”. Figure 2 (below) shows the orientation of  
the DIP switches with respect to ON/OFF positions.  
Alternate Mark Inversion (AMI): AMI coding does not inherently  
account for ones density. To meet this requirement, the user  
should ensure that the data inherently meets pulse density  
requirements.  
ON  
OFF  
Figure 2. Close up of DIP switches showing ON/OFF positions.  
Default positions for Switches SW1, SW3, and SW4 are shown in  
the table on the following page. Descriptions of each switch follow the  
table.  
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4.0 INSTALLATION  
Switch SW3 and SW4: Clock Mode  
The Model 2702 is equipped with DTE, network, and power interfaces.  
This section briefly describes connection to each.  
SW3 is used to along with SW4 to determine the clock mode. For  
example the Model 2702 can be set to external clock mode by setting  
both SW3 and SW4 to the on position. Please refer to the Clock Mode  
chart below for the desired settings.  
4.1 DTE INTERFACE CONNECTION  
The DTE/DCE interface is a V.35 DCE presented as an M/34 male  
connector. This interface is designed to plug directly into a DTE inter-  
face (See Appendix D for V.35 interface pin assignments).  
CLOCK MODE SETTINGS  
SW3  
SW4  
Clock Mode  
4.2 NETWORK INTERFACE CONNECTION  
Off  
Off  
On  
On  
Off  
On  
On  
Off  
Network (Default)  
Internal  
The Network Line Interface is an eight position keyed modular jack  
configured as a RJ-48C. This interface will need to be configured to  
match the line parameters (i.e. framing, line coding, etc.) supplied by  
the central office.  
External  
Network  
RJ-48C Jack  
Signal Name  
CLOCK MODES  
1
2
3
4
5
6
7
8
(RX) Receive (Ring)  
(RX) Receive (Tip)  
Shield  
(TX) Transmit (Ring)  
(TX) Transmit (Tip)  
Shield  
1
2
3
4
5
6
7
8
Network Clock Transmitter timing is derived from the received line  
signal.  
Internal Clock Transmitter clock is derived from an internal clock  
source  
No connection  
No connection  
External Clock Transmitter timing is derived from the local DTE  
device. A 2.048 MHz timing signal must be present a  
at the external clock pin U and pin W on the M/34  
connector.  
Figure 3. Model 2702 twisted pair line interface.  
NOTE: If the Model 2702 is being used for private short range  
modem applications, the twisted pair cable connected to its port  
will need to be a cross-over cable, and should be configured as  
shown below. See Appendix D for Interface pin assignments.  
Note: When using the 2702 as a high-speed short range modem, one  
unit of the link must be configured in either internal or external clock,  
and the other end must be configured for network clock mode, or both  
units could be either Internal or External Clock. But both units cannot  
be network clock mode in SRM applications  
SIGNAL  
PIN NO.  
PIN NO.  
SIGNAL  
1
2
4
5
4
5
1
2
TX Data (Tip)  
TX Data (Ring)  
RX Data (Ring)  
RX Data (Tip)  
RX Data (Ring)  
RX Data (Tip)  
TX Data (Ring)  
TX Data (Tip)  
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5.0 OPERATION  
4.3 POWER CONNECTION  
Once the Model 2702 is installed and configured properly it is  
ready to place into operation. This section describes the function of  
the LED indicators, and the use of the loopback.  
The Model 2702 offers three ways to supply external power: AC  
power, DC power and interface power.  
4.3.1 Using the AC Power Supply (100-240VAC)  
5.1 LED DESCRIPTIONS  
The Model 2702 uses a 5VDC, 400mA universal input 100-  
240VAC, power supply (center pin is +5V). The universal input power  
supply is equipped with a male IEC-320 power entry connector. This  
power supply connects to the Model 2702 by means of a barrel jack on  
the rear panel. There are a variety of international power cords avail-  
able for the universal power supply. The Model 2702 powers up as  
soon as it is plugged into an AC outlet–there is no power switch.  
The Model 2702 is equipped with seven LED indicators that moni-  
tor the status of communication. Figure 4 (below) shows the location  
of the LEDs on the Model 2702 front panel.  
4.3.2 Supplying DC Power  
The 36-60 VDC DC to DC adapter is supplied with the DC version  
of the Model 2702. The black and red leads plug into a DC source  
(nominal 48VDC) and the barrel power connector plugs into the barrel  
power supply jack on the 2702.  
TXD  
RXD  
LOS  
ALM  
To Power  
To -48VDC  
Supply Jack  
ERR  
T/L  
Source  
-Vin  
Black lead (-V)  
Red lead (+V)  
PWR  
+Vin  
Barrel power connector  
4.3.3 Supplying Power via pin KK  
Figure 4. Top of Model 2702, Showing LED Indicators  
You may also supply DC power directly to pin KK of the V.35 inter-  
face. DC Power supplied to pin KK must be regulated 5VDC ± 5%,  
300mA minimum.  
TXD  
RXD  
When the unit sends a one, the TXD LED  
is turned on. When it sends a zero, the  
TXD LED is turned off. Moreover, the TXD  
LED is active only in active DS0 channels.  
In inactive channels, the TXD LED is off.  
NOTE: Model 2702 is factory configured to accept power from the  
enclosed DC wall adapter (See Sections 4.3.1 and 4.3.2 above).  
If you wish to supply power via pin KK on the interface, you must  
change the setting of the power supply jumper on the printed cir-  
cuit board See Appendix E. All power sources must be SELV  
(Circuit, Safety Extra Low Voltage) specified. (See CENELEC  
EN60950, Section 1.2.8.5)  
When the unit receives a one, the RXD  
LED is turned on. When it receives a zero,  
the RXD LED is turned off. Moreover, the  
RXD LED is active only in active DS0 chan-  
nels. In inactive channels, the RXD LED is  
off.  
12  
11  
 
LOTC  
ALM  
The Loss of Transmit Clock LED lights  
when  
the unit detects that there is no transmit  
clock.  
5.2.2 Operating Remote Digital Loopback (RL)  
The Remote Digital Loopback (RL) test checks the performance of  
both the local and remote Model 2702, as well as the communication  
link between them. To perform a RDL test, follow the steps below.  
The alarm LED indicates the loss of carrier,  
i.e., no activity on the network.  
1. Activate the “RL” signal on the DTE pin N. If you are not sure  
which lead is the “RL” signal, please refer to Appendix D.  
ERR  
TST  
The error LED is not used in Model 2702.  
2. Perform a bit error rate test (BERT) or using a separate BER  
Tester. If the BER test indicates a fault, and the Local Line  
Loopback test was successful for both NetLink™s, you may  
have a problem with the twisted pair line connection.  
The test indicator LED blinks with a specific  
pattern depending on the type of test mode.  
When the unit is in local analog loop, the  
LED will blink on briefly. When the unit is in  
remote loop, the TST LED will blink off  
briefly. The test mode is V.54 Loopback &  
Local loopback.  
PWR  
The power indicator LED will remain lit while  
the unit is powered. It turns off when the  
unit is not powered.  
5.2 LOOP (V.54 & TELCO) DIAGNOSTICS  
The Model 2702 offers two V.54 loop diagnostics and is compati-  
ble with two Telco loop diagnostics. Use these diagnostics to test the  
NTU and any communication links. These tests can be activated via  
signals on the DTE interface.  
5.2.1 Operating Local Loopback (LL)  
The Local Loopback (LL) test checks the operation of the local  
Model 2702, and is performed separately on each unit. Any data sent  
to the local Model 2702 in this mode will be echoed (returned) back to  
the user device. To perform a LL test, follow the steps below.  
1. Activate the “LL” signal on the DTE pin L. If you are not sure  
which lead is the “LL” signal, please refer to Appendix D.  
2. Verify that the data terminal equipment is operating properly  
and can be used for a test.  
3. Perform a V.52 BER (bit error rate) test. If the BER test equip-  
ment indicates no faults, but the data terminal indicates a  
fault, follow the manufacturer’s checkout procedures for the  
data terminal. Also, check the interface cable between the  
terminal and the Model 2702.  
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APPENDIX A  
PATTON MODEL 2702  
SPECIFICATIONS  
APPENDIX B  
PATTON MODEL 2702  
CABLE RECOMMENDATIONS  
+
Network Data Rate:  
Network Connector:  
Nominal Impedance:  
2.048 Mbps 50ppm  
The Patton Model 2702 has been performance tested by Patton  
technicians using twisted-pair cable with the following characteristics:  
RJ-48C  
120 ohm (75 ohm available when using  
Wire Gauge  
Capacitance  
Resistance  
Patton Model 460 Balun)  
V.35 (DCE Orientation) on Male M/34  
Selectable AMI or HDB3  
DTE/DCE Interface:  
Line Coding:  
Line Framing:  
Clocking:  
19 AWG  
22 AWG  
24 AWG  
83nf/mi or 15.72 pf/ft.  
83nf/mi or 15.72 pf/ft.  
83nf/mi or 15.72 pf/ft.  
.0163 Ohms/ft.  
.0326 Ohms/ft.  
.05165 Ohms/ft.  
G.703 (Unframed)  
Network, Internal, External (from DTE)  
2.048 Mbps  
To gain optimum performance from the Model 2702 , please keep  
the following guidelines in mind:  
DTE Data Rates:  
Diagnostics:  
Indicators:  
Always use twisted pair wire—this is not an option.  
V.54 Loopback & Local Loopback  
Power, Transmit Data, Receive Data,  
Alarm, Loss of Tx Clock, Test Mode,  
Error  
• Use twisted pair wire with a capacitance of 20pf/ft or less.  
• Avoid twisted pair wire thinner than 26 AWG (i.e. avoid AWG  
numbers higher than 26)  
Configuration:  
Power:  
8-Position DIP Switch  
+
Regulated 5VDC 5%, 300 mA mini-  
• Use of twisted pair with a resistance greater than the above  
specifications may cause a reduction in maximum distance obtain-  
able. Functionality should not be affected.  
mum  
Humidity:  
Up to 90% non-condensing  
0 to 50o C  
• Many environmental factors can affect the maximum distance  
obtainable at a particular site. Use the above data rate/distance  
table as a general guideline only.  
Temperature:  
Dimensions:  
4.8”L x 2.0”W x 0.88”H (12.2 x 5.1 x 2.2  
cm)  
16  
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APPENDIX C  
APPENDIX D  
PATTON MODEL 2702  
PATTON MODEL 2702  
INTERFACE PIN ASSIGNMENT  
FACTORY REPLACEMENT PARTS  
AND ACCESSORIES  
RJ-48C E1 Network Interface  
(RJ-48S Female Modular Jack)  
Patton Model #  
Description  
2702/CM/UI .....................V.35 to E1 Converter (V.35 M/34 Male,  
UI)  
Pin #  
Signal  
10 - 09F...........................6 Foot Control Port Cable, 25 mm to  
1
2
4
5
RX Data (RING)  
RX Data (TIP)  
TX Data (RING)  
TX Data (TIP)  
DB9F  
07M2702 .........................User Manual  
08055DCUI......................Universal Input Power Supply  
18  
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APPENDIX D  
(continued)  
APPENDIX E  
PATTON MODEL 2702  
POWER SUPPLY INTERFACE  
PATTON MODEL 2702  
INTERFACE PIN ASSIGNMENT  
M/34 Connector, Terminal Interface  
Via Main 5VDC power jack (J1)  
Center Pin:  
Outer Barrel:  
Barrel Plug:  
5VDC @ 300 mA  
Ground  
Pin #  
A
Signal  
2.1/5.5/10mm I.D./O.D./Shaft Length dimensions.  
GND (Earth Ground/Shield)  
B
SGND (Signal Ground)  
Jumper Position for Power via DC Power Jack (default):  
D
CTS (DCE Source)  
E
F
DSR (DCE Source, Always On)  
CD (DCE Source)  
L
M
N
P
R
S
T
U
V
W
X
Y
AA  
KK  
LL (Local Loop, DTE Source)  
TM (Test Mode Indicator (DCE Source)  
RL (Remote Loop, DTE Source)  
TD (Transmit Data +, DTE Source)  
RD (Receive Data +, DCE Source)  
TD/ (Transmit Data -, DTE Source)  
RD/ (Receive Data -, DCE Source)  
SCTE (Transmit Clock+, DTE Source)  
RC (Receiver Clock +, DCE Source)  
SCTE/ (Transmit Clock-, DTE Source)  
RC/ (Receiver Clock -, DCE Source)  
TC (Transmitter Clock +, DCE Source)  
TC/ (Transmitter Clock -, DCE Source)  
Aux. Power Input (+5VDC @ 300mA)  
Via Auxiliary Power Supplied to Pin KK on V.35 connector  
DC Power supplied to pin KK must be 5VDC ± 5%, 300mA minimum.  
Jumper Position for Power via Pin KK:  
NOTE: Model 2702 is factory configured to accept power from the  
enclosed DC wall adapter (See Sections 4.3.1 and 4.3.2 above).  
If you wish to supply power via pin KK on the interface, you must  
change the setting of the power supply jumper on the printed cir-  
cuit board. All power sources must be SELV (Circuit, Safety Extra  
Low Voltage) specified. (See CENELEC EN60950, Section  
1.2.8.5)  
19  
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