Patton electronic Network Card 2701 C User Manual

USER  
MANUAL  
MODEL 2701/B, C, D  
G.703/G.704 NTU with  
EIA-530,V.35, X.21  
Interfaces  
Part# 07M2701/X  
Doc# 086101U Rev. B  
Revised 1/6/05  
SALES OFFICE  
(301) 975-1000  
TECHNICAL SUPPORT  
(301) 975-1007  
An ISO-9001Certified  
Company  
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A.9 Network Data Rates .................................................................... 21  
A.13 Humidity ...................................................................................... 22  
A.14 Temperature ............................................................................... 22  
A.15 Dimensions ................................................................................. 22  
B
C
D
E
Interface Pin Assignment......................................................... 23  
Interface Pin Assignment......................................................... 25  
Interface Pin Assignment......................................................... 27  
Factory Replacement Parts and Accessories........................ 28  
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1.0 WARRANTY INFORMATION  
Patton Electronics warrants all Model 2701/I components to be free from  
defects, and will—at our option—repair or replace the product should it  
fail within one year from the first date of shipment.  
This warranty is limited to defects in workmanship or materials, and does  
not cover customer damage, abuse, or unauthorized modification. If this  
product fails or does not perform as warranted, your sole recourse shall  
be repair or replacement as described above. Under no condition shall  
Patton Electronics be liable for any damages incurred by the use of this  
product.These damages include, but are not limited to, the following: lost  
profits, lost savings and incidental or consequential damages arising  
from the use of or inability to use this product. Patton Electronics specifi-  
cally disclaims all other warranties, expressed or implied, and the instal-  
lation or use of this product shall be deemed an acceptance of these  
terms by the user.  
1.1 RADIO AND TV INTERFERENCE  
The Model 2701 generates and uses radio frequency energy, and if not  
installed and used properly—that is, in strict accordance with the manu-  
facturer's instructions—may cause interference to radio and television  
reception.The Model 2701 has been tested and found to comply with the  
limits for a Class A computing device in accordance with the specifica-  
tions in Subpart J of Part 15 of FCC rules, which are designed to provide  
reasonable protection from such interference in a commercial installa-  
tion. However, there is no guarantee that interference will not occur in a  
particular installation. If the Model 2701 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).  
1.2 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 Union European (EU). A Cer-  
tificate of Compliance is available by contacting Technical Support.  
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1.3 SERVICE  
All warranty and non-warranty repairs must be returned freight prepaid  
and insured to Patton Electronics. All returns must have a Return Materi-  
als Authorization number on the outside of the shipping container. This  
number may be obtained from Patton Electronics Technical Services at:  
Tel: +1 (301) 975-1007  
Note Packages received without an RMA number will not be  
accepted.  
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2.0 GENERAL INFORMATION  
Thank you for your purchase of this Patton Electronics product. This  
product has been thoroughly inspected and tested and is warranted for  
One Year parts and labor. If any questions or problems arise during  
installation or use of this product, please do not hesitate to contact Pat-  
ton Electronics Technical Support at (301) 975-1007.  
2.1 FEATURES  
Terminates G.703 and G.704, E1/fractional E1 service  
• Available in low-cost standalone or rack-mountable versions  
• n x 64 kbps data rates to 2 Mbps  
• X.21, V.35, and EIA-530  
• Switch-selectable AMI or HDB3 line encoding options  
• Switch-selectable DTE/DCE modes for X.21 version  
• 75-ohm dual coax and 120-ohm twisted-pair G.703 connections  
• Local and remote loopback diagnostics  
• Internal, external, and G.703 network timing  
• CE and BABT approvals  
• 100–240 VAC and 48 VDC power options  
• Conforms to ONP requirements CTR 12 and CTR 13 for connection to  
international Telecom networks  
2.2 DESCRIPTION  
The Model 2701 receives channelized G.704 (n x 64 kbps) or clear chan-  
nel E1/G.703 (2.048-Mbps) data from the Telco’s digital data network.  
The Model 2701 terminates the G.703 telco interface and converts the  
data for transmission to a user-oriented serial [X.21, V.35, and EIA-530  
(V.36/RS422)]. The 2701 can connect to a Router, FRAD, PABX or Multi-  
plexer over its serial interface at nx64kbps data rates up to 2.048 Mbps.  
Thank you for your purchase of this Patton Electronics product. This  
product has been thoroughly inspected and tested and is warranted for  
One Year parts and labor. If any questions or problems arise during  
installation or use of this product, contact Patton Electronics Technical  
Support at (301) 975-1007.  
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3.0 CONFIGURATION  
The Model 2701 features configuration capability via hardware DIP  
switches.This section describes all possible DIP switch configurations of  
the Model 2701.  
3.1 DIP SWITCH CONFIGURATION  
The Model 2701 has two sets of internal DIP switches that allow configu-  
ration for a wide range of applications.The sets of switches are accessed  
from the underside of the 2701. Figure 1 shows the location of the DIP  
switches on the bottom of the printed circuit board.  
Figure 1. Underside of Model 2701, Showing Location of DIP Switches  
The Model 2701 DIP switches (Switch Sets 1–2) can be configured as  
either “ON” or “OFF”. Figure 2 shows the orientation of the DIP switches  
with respect to ON/OFF positions.  
Figure 2. Close up of configuration switches  
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Switch SW1-1 through SW1-5  
A detailed description of each switch (SW1-1 through SW1-5) setting fol-  
lows the summary table below.  
Table 1: Switch Set 1 Summary Table  
SW1 SW2 SW3 SW4 SW5  
Speed  
On  
Off  
On  
Off  
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  
Off  
Off  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
64 kbps  
128 kbps  
192 kbps  
256 kbps  
320 kbps  
384 kbps  
448 kbps  
512 kbps  
576 kbps  
640 kbps  
704 kbps  
768 kbps  
832 kbps  
896 kbps  
960 kbps  
1024 kbps  
1088 kbps  
1152 kbps  
1216 kbps  
1280 kbps  
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SW1 SW2 SW3 SW4 SW5  
Speed  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
On  
Off  
Off  
On  
On  
Off  
Off  
On  
On  
Off  
Off  
Off  
Off  
Off  
Off  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
1344 kbps  
1408 kbps  
1472 kbps  
1536 kbps  
1600 kbps  
1664 kbps  
1728 kbps  
1792 kbps  
1856 kbps  
1920 kbps  
1984 kbps  
Clear Channel 2048 kbps  
Note When the data rate is set to 2.048Mb/s, the unit is forced into  
G.703 mode, and it transmits user data on all 32 time-lots.There  
is no framing information; therefore, the CRC4 MF (SW2-2)  
switch is ignored. In all other rate settings, the unit employs  
G.704 framing; TS0 is reserved for signaling.  
SW1-6 SW1-7  
Clock Mode  
On  
On  
Off  
Off  
On  
Off  
On  
Off  
Network (Received Recovered)  
Internal  
External  
Network (Received Recovered)  
SW1-6 and SW1-7 Clock Modes  
Use Switches SW1-6 and SW1-7 to configure the 2701 for internal,  
external, or receive recover clock mode.  
Network ClockTransmitter timing is derived using the received line  
signal (received recovered) from the network.  
Internal ClockTransmitter timing is derived from an internal clock  
source.  
External ClockTransmitter timing is derived from DTE terminal timing.  
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SW1-8: Enable/Disable Loop Tests from DTE  
Use Switch SW1-8 to allow Model 2701 to enter loopback tests when the  
DTE raises the appropriate loop request pin.  
S1-8  
Setting  
Off  
On  
Response to DTE Loopback Request Enabled  
Response to DTE Loopback Request Disabled  
Position  
Function  
Factory Default  
Selected Option  
SW2-1  
SW2-2  
SW2-3  
SW2-4  
SW2-5  
SW2-6  
SW2-7  
SW2-8  
Line Coding  
CRC-4 multiframe  
Data Inversion  
V.54/CSU select  
FPS enabled  
V.54 Response  
Not Used  
Off  
Off  
Off  
Off  
Off  
On  
N/A  
N/A  
HDB3  
Disabled  
Data Not Inverted  
V.54 RDL loop  
Enabled  
Disabled  
N/A  
Not Used  
N/A  
Switch SW2-1 Line Coding: HDB3 (default)  
Use Switch SW2-1 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 2701s together as short range  
modems, set both units to HDB3.  
SW2-1 Line Encoding  
Off  
On  
HDB3  
AMI  
Options: HDB3, AMI  
HDB3 In this line coding, the transmitter substitutes a deliberate bipo-  
lar 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. Unless AMI is  
required in your application, HDB3 should be used whenever  
possible.  
AMI  
Alternate Mark Inversion defines a pulse as a “mark,” a binary  
one, as opposed to a zero. In an E1 network connection, signals  
are transmitted as a sequence of ones and zeros. Ones are  
sent as pulses, and zeros are sent as spaces, i.e., no pulse.  
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Every other pulse is inverted from the previous pulse in polarity,  
so that the signal can be effectively transmitted. This means,  
however, that a long sequence of zeros in the data stream will  
cause problems, since the NTU receiving the signal relies on  
the signal to recover the 2.048 Mb/s clock.  
If you must use AMI, you should ensure that the data terminal  
equipment connected to the unit provides a minimally accept-  
able pulse density. For this reason, there are advantages to  
using HDB3 instead. 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.  
Switch SW2-2: CRC-4 Multiframe  
In framed mode, SW2-2 is used for CRC-4 MF. When CRC-4 is enabled,  
the unit monitors the incoming data stream for CRC-4 errors. It transmits  
CRC-4 error counts to the transmitting unit. When using timeslot zero  
(TS0), excessive errors may cause loss of frame or loss of sync. If CRC-  
4 MF is used, both units must be set for set for CRC-4 MF. Otherwise, the  
one using CRC-4 MF will detect loss of sync.  
SW2-2  
Option  
Off  
On  
CRC-4 Disabled  
CRC-4 Enabled  
Note When the data rate is set to 2.048Mb/s, then the unit is forced  
into G.703 mode, and it transmits user data on all 32 time-lots.  
There is no framing information; therefore, the CRC4 MF (SW2-  
2) switch is ignored. In all other rate settings, the unit employs  
G.704 framing; TS0 is reserved for signaling.  
Switch SW2-3 Data Inversion  
Set Switch S2-3 to determine whether or not the data stream from the  
local DTE is inverted within the Model 2701 before being passed to the  
G.703/G.704 network. An inverted data stream may be required when  
you use the Model 2701 to communicate with a G.703 device (that  
inverts the data) on the remote end. In typical installations, data inversion  
is not necessary.  
SW2-3  
Option  
Off  
On  
Data not inverted  
Data inverted  
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Switch SW2-4: Remote Digital Loopback Type  
The user can set this switch to select the type of remote loop that will be  
initiated by the Model 2701. If set to V.54, the Model 2701 will initiate a  
V.54 loop when Remote Loop is selected by the front panel switches. If  
set to CSU, the Model 2701 will initiate a CSU loop when Remote Loop  
is selected by the front panel switches.  
S2-4  
RDL Type  
Off  
On  
Initiate a V.54 RDL loop when selected  
Initiate a CSU loopback when selected  
Switch SW2-5 Front Panel Switches  
As the Front Panel Switches may be inadvertently toggled, or in the  
event that the end-user may not need to use the switches, the installer  
may disable the front panel switches. Set Switch S2-5 to determine  
whether the front-panel toggle switches are active or inactive.  
SW2-5  
Option  
Off  
On  
Front Panel Switches Enabled  
Front Panel Switches Disabled  
Switch SW2-6:V.54 Response Disabled (default)  
V.54 Response is a special in-band loopback facility that sends a  
pseudo-random pattern over the data stream. This is the only loopback  
that the unit can initiate. This is useful for campus applications when you  
need to put a remote unit in loopback.The unit responds to the V.54 loop-  
back command, and the whole process takes only a few seconds to com-  
plete. When V.54 Loopback is disabled, the unit will not be able to send  
or respond to V.54 loopback commands. The duration of the loopback is  
limited by the loopback timeout setting.  
SW2-6  
Option  
Off  
On  
V.54 Response Enabled  
V.54 Response Disabled  
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4.0 INSTALLATION  
Once the Model 2701 is properly configured, it is ready to connect to the  
G.703/G.704 interface, to the serial port, and to the power source. This  
section describes how to make these connections.  
4.1 CONNECTING TO THE G.703 NETWORK  
The Power, G.703/G.704 and serial Line connections are located on the  
rear panel of the Model 2701. The following sections describe operation  
of these connections.  
Connecting the 2701/D (X.21 version) Dual Coaxial Cable  
(75 ohm) to the G.703 Network  
The Model 2701/D (X.21 version) is equipped with dual female BNCs  
(TX and RX) for connection to a 75 ohm dual coax G.703 network inter-  
face. If your G.703/G.704 network terminates via dual coaxial cable, use  
the diagram below to make the proper connections. See Figure 3.  
Figure 3. Rear Panel, Showing Location of Connectors.  
Note The outer conductor of the coax cables are isolated from system  
earth ground.  
When using the 75 Ohm interface, jumper straps JP2, JP5, JP6, and JP7  
must be installed over the jumpers. The jumpers are located next to the  
BNC connectors. Refer to the following section to open the case. Open  
the case and install jumper straps for JP2, JP5, JP6, and JP7.  
Opening the Case  
Open the case by inserting a screwdriver into the slots and twist the  
screwdriver head slightly. The top half of the case will separate from the  
lower half of the case. Take caution not to damage any of the PC board  
mounted components.  
Connecting the Twisted Pair (120 ohm) to the G.703 Network  
The Model 2701 is equipped with a single RJ-48C jack for connections to  
a 120 ohm twisted pair G.703/G.704 network interface. If your G.703/  
G.704 network terminates via RJ-48C, use the connection diagram  
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(Figure 4) following the pinout and signals chart below to connect the  
120 ohm G.703/G.704 network channel.  
Figure 4. G.703/G.704 170 ohm Connection.  
4.2 CONNECTING THE SERIAL PORT  
The Model 2701/B, C, D supports RS-530, V.35, X.21 serial port connec-  
tions. This section describes how to connect the serial ports to your ter-  
minal equipment.  
Connecting to a “DTE” Device  
The serial port on the 2701/B (RS-530 version) and 2701/C (V.35 ver-  
sion) is hard-wired as a DCE. Therefore these modules “want” to plug  
into a DTE such as a terminal, PC or host. When making the connection  
to your DTE device, use a straight through cable of the shortest possible  
length—we recommend 6 feet or less. When purchasing or constructing  
an interface cable, please refer to the pin diagrams in Appendix D as a  
guide.  
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Connecting to a “DCE” Device  
If the Model 2701 serial interface is hard-wired as a DCE (all except the  
X.21 version), you must use a null modem cable when connecting to a  
modem, multiplexer or other DCE device. This cable should be of the  
shortest possible length—we recommend 6 feet or less.  
Configuring the X.21 Interface (2701/D)  
The serial port on the X.21 interface is default wired as a DCE, but may  
be switched to a DTE. This is done by reversing the orientation of the  
DCE/DTE strap, as described below:  
To reverse DCE/DTE orientation, remove the top case. Refer to section  
“Opening the Case” on page 13  
The DCE/DTE strap is located near the DB15 connector on the top side  
of the board.The arrows on the top of the strap indicate the configuration  
of the X.21 port (for example, if the DCE arrows are pointing toward the  
DB-15 connector, the X.21 port is wired as a DCE). Reverse the DCE/  
DTE orientation by pulling the strap out of its socket, rotating it 180º, then  
plugging the strap back into the socket.You will see that the DCE/DTE  
arrows now point in the opposite directions, showing the new configura-  
tion of the X.21 port.  
Note If the 2701/D is configured as a DTE, the clocking mode must be  
set for external clock.  
4.3 POWER CONNECTION  
Universal AC Power (100–240 VAC)  
The Model 2701 uses a 5VDC, 2A universal input 100–240 VAC, power  
supply (center pin is +5V). The universal input power supply has a male  
IEC-320 power entry connector. This power supply connects to the  
Model 2701 by means of a barrel jack on the rear panel. Many interna-  
tional power cords are available for the universal power supply.  
The Model 2701 powers up as soon as it is plugged into an AC outlet--  
there is no power switch.  
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DC Power  
The 36–60 VDC DC to DC adapter supplied with the DC version of the  
Model 2701 plugs in a DC source (nominal 48 VDC) and plugs into the  
barrel power supply jack on the rear of the 2701. Refer to Figure 5 to  
make the proper connection.  
Figure 5. Connecting DC Power to the 2701 DC Power Supply.  
There are no user-serviceable parts in the  
power supply section of the Model 2701. Con-  
tact Patton Electronics Technical support at  
(301)975-1007, via our web site at http://  
ton.com, for more information.  
WARNING  
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5.0 OPERATION  
When the Model 2701 has been properly configured and installed, it  
should operate transparently. This sections describes power-up, LED  
status monitors, and the built-in loopback test modes.  
5.1 POWER-UP  
Before applying power to the Model 2701, please read “Power Connec-  
tion” on page 15 and verify that the unit is properly connected to the  
appropriate power source.  
5.2 LED STATUS MONITORS  
The Model 2701 features six front panel LEDs that monitor connections  
on the G.703/G.704 and signaling, error and test modes. Figure 6 shows  
the front panel location of each LED. Descriptions of each LED follow  
Figure 6.  
Figure 6. 2701 Front Panel  
E1 Link  
(Active Green) Solid green (On) indicates that the end to end E1  
Link is up, signifying that the link is active. The E1 Link LED is  
Off when the link is down.  
TD & RD  
Glows yellow to indicate an idle condition of Binary “1” data on  
the respective terminal interface signals. Green indicates Binary  
“0” data.  
LOS  
The Loss of Sync LED lights when the unit loses synchroniza-  
tion with the incoming signal. This may happen when there is a  
framing mismatch or a loss of signal. In unframed mode, the  
LOS LED monitors the status of the transmit clock.  
ER  
The error LED indicates various error conditions, including fram-  
ing bit errors, excessive zeros, controlled slips, severe errors, or  
bit errors (when sending V.52 test patterns). When sending a  
test pattern, the LED will remain lit if the unit does not receive  
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the identical pattern. When it receives the correct pattern, the  
LED will turn off. If error insertion is on, the LED will blink once a  
second if everything is operating properly.  
TM  
(Active Yellow) Solid Yellow indicates an Active Test Mode. The  
unit may be placed in test mode by the local user or by the  
remote user.  
5.3 LOOP (V.54 & TELCO) DIAGNOSTICS  
The Model 2701 offers three V.54 loop diagnostics. Use these diagnos-  
tics to test the NTU and any communication links. These tests can be  
activated via the front panel switches or via signals on the Model 2701/B  
and C serial port interface.  
Operating Local Loopback (LL)  
The Local Loopback (LL) test checks the operation of the local Model  
2701, and is performed separately on each unit. Any data sent to the  
local Model 2701 in this test mode will be echoed (returned) back to the  
user device (i.e., characters typed on the keyboard of a terminal will  
appear on the terminal screen).  
Figure 7. Local Loopback for a Network Termination Application  
To perform a LL test, follow these steps:  
1. Activate LL. This may be done in one of two ways:  
Place the switch on the front panel in the “Local” position.  
Activate the “LLsignal on the DTE (2701/B and 2701/C only).  
If you are not sure which lead is the “LLsignal, please refer to  
Appendix D.  
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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 as described in section  
“Using the V.52 (BER) Test Pattern Generator” on page 20. If the  
BER test equipment indicates no faults, but the data terminal indi-  
cates a fault, follow the manufacturer’s checkout procedures for the  
data terminal. Also, check the interface cable between the terminal  
and the Model 2701.  
Operating Remote Digital Loopback (RL)  
The Remote Digital Loopback (RL) test checks the performance of both  
the local and remote NetLink-E1™, as well as the communication link  
between them. Any characters sent to the remote NetLink-E1™ in this  
test mode will be returned back to the originating device (i.e, characters  
typed on the keyboard of the local terminal will appear on the local termi-  
nal screen after having been passed to the remote NetLink-E1™ and  
looped back).  
Figure 8. Remote Loop in a Network Extension Application  
There are two Remote Loops that can be initiated from the NetLink-E1  
unit: (1) V.54 Loop, and; (2) CSU Loop. The user can select the type of  
loop that can be initiated by Switch S2-4. When a loopback is initiated  
this is the type of loop that the unit uses to loop up the remote unit and  
which type of loop the unit will respond to.  
To perform an RDL test, follow these steps:  
1. Activate RDL. This may be done in two ways:  
Activate the “RLsignal on the DTE (2701/B and 2701/C only). If  
you are not sure which lead is the “RLsignal, please refer to  
Appendix B or C, depending on the version you are using.  
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Set the front panel switch to “Remote”.  
2. Perform a bit error rate test (BERT) using the internal V.52 genera-  
tor (as described in section “Using the V.52 (BER) Test Pattern  
Generator”), or using a separate BER Tester. If the BER test indi-  
cates a fault, and the Local Line Loopback test was successful for  
both NetLink devices, you may have a problem with the twisted  
pair line connection.  
CSU Loop  
Although CSU Loop is predominantly a T1 function, the NetLink-2701  
responds to central office initiated loop commands. Customers can use  
this facility when the Central Office network switch supports CSU loops  
over an E1 interface.  
When CSU Loop is selected, the NetLink 2701 will implement the “loop  
up” command when it recognizes the pattern “10000” in the data stream  
for a minimum of 5 seconds. The “loop down” command is implemented  
by the pattern “100” in the data stream for a minimum of 5 seconds.  
The NetLink 2701 will respond to Universal Loopback De-activate to  
clear all central office loops.  
Using the V.52 (BER) Test Pattern Generator  
To use the V.52 BER tests in conjunction with the Remote Digital Loop-  
back tests (or with Local Line Loopback tests), follow these instructions:  
1. Locate the “511/511E” toggle switch on the front panel of the 2701  
and move it UP.This activates the V.52 BER test mode and transmits  
a “511” test pattern into the loop. If any errors are present, the local  
modem’s red “ER” LED will illuminate.  
2. If the above test indicates no errors are present, move the V.52 tog-  
gle switch DOWN, activating the “511/E” test with errors present. If  
the test is working properly, the local modem's red “ER” LED will  
blink once every second. A successful “511/E” test will confirm that  
the link is in place, and that the Model 2701’s built-in “511” generator  
and detector are working properly.  
Note The above V.52 BER tests can be used independently of the  
Remote Digital Loopback tests.This requires two operators: one  
to initiate and monitor the tests at the local Model 2701, and one  
to do the same at the remote Model 2701. In this case, the test  
pattern sent by each Model 2701 will not be looped back, but will  
be transmitted down the line to the other Model 2701. While one  
operator initiates test, the other monitors for errors.  
20  
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APPENDIX A  
SPECIFICATIONS  
A.1 NETWORK DATA RATE  
2.048 Mbps  
A.2 NETWORK CONNECTOR  
RJ-48C/Dual Coax BNC (2701/D)  
A.3 NOMINAL IMPEDANCE  
75/120 ohm  
A.4 LINE CODING  
Selectable AMI or HDB3  
A.5 LINE FRAMING  
G.703 (Unframed) or G.704/G.732 (Framed)  
A.6 CRC-4 MULTIFRAMING  
Selectable On or Off  
A.7 CLOCKING  
Internal, External, or Network (Receive Recover)  
A.8 TIME SLOT RATE  
64 kbps  
A.9 NETWORK DATA RATES  
64, 128, 192, 256, 320,384, 448, 512, 576, 640, 704, 768, 832, 896, 960,  
1024, 1088, 1152, 1216, 1280, 1344, 1408, 1472, 1536, 1600, 1664,  
1728, 1792, 1856, 1920, 1984, 2048 kbps  
A.10 DISTANCE  
Maximum 1.6 km (5,250 ft.) on 24 AWG Cable  
A.11 CONFIGURATION  
Two 8-Position DIP Switches  
21  
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A.12 POWER SUPPLY  
+5 VDC External power supply/100–240 VAC, 50–60Hz, 0.4A  
A.13 HUMIDITY  
Up to 90% non-condensing  
A.14 TEMPERATURE  
0 to 50°C (32 to 122°F)  
A.15 DIMENSIONS  
9.0L x 5.3W x 2.0H cm (3.5L x 2.1W x 0.78H in.)  
22  
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APPENDIX B  
INTERFACE PIN ASSIGNMENT  
EIA-530 Interface Pin Description  
(DB-25 Female Connector)  
(DCE Configuration)  
Pin #  
Signal  
1
FG (Frame Ground)  
2
TD (Transmit Data)  
3
RD (Receive Data)  
4
RTS (Request to Send)  
CTS (Clear to Send)  
5
6
DSR (Data Set Ready)  
SGND (Signal Ground)  
CD (Carrier Detect)  
7
8
9
RC/ (Receive Timing-B)  
CD/ (Carrier Detect-B)  
XTC/ (External Transmit Clock)  
TC/ (Transmit Clock-B)  
CTS/ (Clear to Send)  
TD/ (Transmit Data-B)  
TC (Transmit Clock-A)  
RD (Receive Data)  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
RC (Receive Timing)  
LLB (Local Line Loop)  
RTS/ (Request to Send)  
DTR (Data Terminal Ready)  
DL (Remote Digital Loop)  
DSR/ (Data Set Ready)  
DTR/ (Data Terminal Ready)  
XTC (External Transmit Clock)  
TM (Test Mode)  
23  
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24  
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APPENDIX C  
INTERFACE PIN ASSIGNMENT  
V.35 Interface  
(M/34F Female Connector)  
(DCE Configuration)  
Pin #  
Signal  
B
C
D
E
SGND (Signal Ground)  
RTS (Request to Send)  
CTS (Clear to Send)  
DSR (Data Set Ready)  
CD (Carrier Detect)  
F
H
L
DTR (Data Terminal Ready)  
LLB (Local Line Loop)  
TM (Test Mode)  
M
N
P
RDL (Remote Digital Loop)  
TD (Transmit Data)  
R
S
RD (Receive Data)  
TD/ (Transmit Data-B)  
RD/ (Receive Data-B)  
XTC (External Transmit Clock)  
RC (Receive Timing)  
XTC/ (External Transmit Clock)  
RC/ (Receive Timing)  
TC (Transmit Clock-A)  
TC/ (Transmit Clock-B)  
T
U
V
W
X
Y
AA  
25  
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26  
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APPENDIX D  
INTERFACE PIN ASSIGNMENT  
X.21 Interface  
(DB-15 Female Connector)  
(DTE /DCE Configuration)  
Pin #  
Signal  
Frame Ground  
1
2
T (Transmit Data-A)  
C (Control-A)  
3
4
R (Receive Data-A)  
I (Indication-A)  
5
6
S (Signal Element Timing-A)  
BT (Byte Timing-A)  
SGND (Signal Ground)  
T/ (Transmit Data-B)  
C/ (Control-B)  
7
8
9
10  
11  
12  
13  
14  
R/ (Receive Data-B)  
I/ (Indication-B)  
S/ (Signal Element Timing-B)  
BT/ (Byte Timing-B)  
27  
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APPENDIX E  
FACTORY REPLACEMENT PARTS AND ACCESSORIES  
Patton Model #  
Description  
2701/B  
2701/C  
G.703/G.704 NTU with RS-530 interface  
G.703/G.704 NTU with a V.35 interface  
G.703/G.704 NTU with an X.21 interface  
G.703/G.704 NTU w/ 10Base-T EN interface  
American Power Cord  
2701/D  
2701/I  
0805US  
0805EUR  
0805UK  
0805AUS  
0805DEN  
0805FR  
0805IN  
European Power Cord CEE 7  
United Kingdom Power Cord  
Australia/New Zealand Power Cord  
Denmark Power Cord  
France/Belgium Power Cord  
India Power Cord  
0805IS  
Israel Power Cord  
0805JAP  
0805SW  
08055DCUI  
07M2701  
Japan Power Cord  
Switzerland Power Cord  
Universal Input Power Supply  
User Manual  
Copyright © 2004  
Patton Electronics Company  
All Rights Reserved.  
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