Patton 2701-D, 2701-B, 2701-C User Manual
USER
MANUAL
MODEL 2701/B, C, D
G.703/G.704 NTU with
EIA-530, V .35, X.21
Interfaces
An ISO-9001Certified
Company
Part# 07M2701/X
Doc# 086101U Rev. B
Revised 1/6/05
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
CONTENTS
1.0 Warranty Information ................................................................. 4
1.1 Radio and TV Interference............................................................ 4
1.2 CE Notice...................................................................................... 4
1.3 Service.......................................................................................... 5
2.0 General Information.................................................................... 6
2.1 Features........................................................................................ 6
2.2 Description.................................................................................... 6
3.0 Configuration .............................................................................. 7
3.1 DIP Switch Configuration.............................................................. 7
Switch SW1-1 through SW1-5...................................................... 8
SW1-6 and SW1-7 Clock Modes.................................................. 9
SW1-8: Enable/Disable Loop Tests from DTE........................... 10
Switch SW2-1 Line Coding: HDB3 (default)............................... 10
Switch SW2-2: CRC-4 Multiframe.............................................. 11
Switch SW2-3 Data Inversion..................................................... 11
Switch SW2-4: Remote Digital Loopback Type.......................... 12
Switch SW2-5 Front Panel Switches.......................................... 12
Switch SW2-6: V.54 Response Disabled (default)..................... 12
4.0 Installation................................................................................. 13
4.1 Connecting to the G.703 Network............................................... 13
Connecting the 2701/D (X.21 version) Dual Coaxial Cable
(75 ohm) to the G.703 Network.................................................. 13
Opening the Case....................................................................... 13
Connecting the Twisted Pair (120 ohm) to the G.703 Network.. 13
4.2 Connecting the Serial Port.......................................................... 14
Connecting to a “DTE” Device.................................................... 14
Connecting to a “DCE” Device ................................................... 15
Configuring the X.21 Interface (2701/D)..................................... 15
4.3 Power Connection ...................................................................... 15
Universal AC Power (100–240 VAC).......................................... 15
DC Power................................................................................... 16
5.0 Operation................................................................................... 17
5.1 Power-up .................................................................................... 17
5.2 LED Status Monitors................................................................... 17
5.3 Loop (V.54 & Telco) Diagnostics................................................ 18
Operating Local Loopback (LL).................................................. 18
Operating Remote Digital Loopback (RL)................................... 19
CSU Loop................................................................................... 20
Using the V.52 (BER) Test Pattern Generator ........................... 20
A Specifications ........................................................................... 21
A.1 Network Data Rate ...................................................................... 21
A.2 Network Connector ..................................................................... 21
A.3 Nominal Impedance ................................................................... 21
A.4 Line Coding ................................................................................ 21
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A.5 Line Framing ............................................................................... 21
A.6 CRC-4 Multiframing .................................................................... 21
A.7 Clocking ...................................................................................... 21
A.8 Time Slot Rate ............................................................................. 21
A.9 Network Data Rates .................................................................... 21
A.10 Distance ...................................................................................... 21
A.11 Configuration .............................................................................. 21
A.12 Power Supply .............................................................................. 22
A.13 Humidity ...................................................................................... 22
A.14 Temperature ............................................................................... 22
A.15 Dimensions ................................................................................. 22
B Interface Pin Assignment......................................................... 23
C Interface Pin Assignment......................................................... 25
D Interface Pin Assignment......................................................... 27
E 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 f ollo wing: lost
profits, lost savings and incidental or consequential damages arising
from the use of or inability to use this product. Patton Electronics specifically disclaims all other warranties, expressed or implied, and the installation 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 manufacturer'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 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 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 Certificate 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 Materials Authorization number on the outside of the shipping container. This
number may be obtained from Patton Electronics Technical Services at:
• Tel: +1
• Email:
• URL:
Note
(301) 975-1007
support@patton.com
http://www.patton.com
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 Patton 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 T elecom networks
2.2 DESCRIPTION
The Model 2701 receives channelized G.704 (n x 64 kbps) or clear channel 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 Multiplexer 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 configuration 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 follows the summary table below.
Table 1:
Switch Set 1 Summary Table
SW1 SW2 SW3 SW4 SW5 Speed
On On On On On 64 kbps
Off On On On On 128 kbps
On Off On On On 192 kbps
Off Off On On On 256 kbps
On On Off On On 320 kbps
Off On Off On On 384 kbps
On Off Off On On 448 kbps
Off Off Off On On 512 kbps
On On On Off On 576 kbps
Off On On Off On 640 kbps
On Off On Off On 704 kbps
Off Off On Off On 768 kbps
On On Off Off On 832 kbps
Off On Off Off On 896 kbps
On Off Off Off On 960 kbps
Off Off Off Off On 1024 kbps
On On On On Off 1088 kbps
Off On On On Off 1152 kbps
On Off On On Off 1216 kbps
Off Off On On Off 1280 kbps
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SW1 SW2 SW3 SW4 SW5 Speed
On On Off On Off 1344 kbps
Off On Off On Off 1408 kbps
On Off Off On Off 1472 kbps
Off Off Off On Off 1536 kbps
On On On Off Off 1600 kbps
Off On On Off Off 1664 kbps
On Off On Off Off 1728 kbps
Off Off On Off Off 1792 kbps
On On Off Off Off 1856 kbps
Off On Off Off Off 1920 kbps
On Off Off Off Off 1984 kbps
Off Off Off Off Off 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 Network (Received Recovered)
On Off Internal
Off On External
Off Off 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 Clock
—Transmitter timing is derived using the received line
signal (received recovered) from the network.
Internal Clock
—Transmitter timing is derived from an internal clock
source.
External Clock
—Transmitter timing is derived from DTE terminal timing.
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