USER
MANUAL
MODEL IM2RC/F-128K
Co-Directional Rack Mount
Modem Rear Card
An ISO-9001
Certified Company
Part# 07MIM2RC/F128-A
Doc# 078541UA
Revised 07/27/99
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
http://www.patton.com
1 2
TABLE OF CONTENTS
SECTION PAGE
1.0 Warranty Information .............................................................2
1.1 Radio and TV Interference
1.2 Service Information
2.0 General Information ...............................................................4
2.1 Product Features
2.2 General Product Description
3.0 Configuration .........................................................................5
3.1 Configuring the IM2RC/F-128K Hardware Switches
3.2 Connecting the Interface Driver Board
4.0 Installation .............................................................................9
4.1 The Model 1000R16 Rack Chassis
4.1.1 The Rack Power Supply
4.2 Installing the Rear IM2RC/F-128K Card and Front Function
Card
4.3 Making Interface Connections
4.3.1 Connecting to a G.703 PCM Network Channel
4.3.2 Connecting the Line Interface
4.3.3 Two-Wire and Four-Wire Cable Connection via RJ-45
5.0 Operation.............................................................................14
5.1 Typical Application
5.2 Operating Instructions
Appendix A - Specifications........................................................15
Appendix B - Cable Recommendations......................................16
Appendix C - Factory Replacement Parts..................................17
Appendix D - 120 Ohm G.703 Interface Pin Assignment...........18
Appendix E - Line Interface Assignment....................................19
1.0 WARRANTY INFORMATION
Patton Electronics warrants all Model IM2RC/F-128K compo-
nents 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 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 IM2RC/F-128K generates and uses radio frequency
energy, and if not installed and used proper ly—that is, in strict accordance with the manufacturer's instructions—may cause interference to
radio and television reception. The Model IM2RC/F-128K 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 IM2RC/F-128K does cause interference to radio or television
reception, which can be determined by disconnecting the unit, 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).In the event the
user detects intermittent or continuous product malfunction due to
nearby high power transmitting radio frequency equipment, the user is
strongly advised to use only data cables with an external outer shield
bonded to a metal or metalized connector at both ends. Shielded
cables must be used on the network connection to satisfy compliance
with the Electromagnetic Compatibility (EMC) directive.
3 4
1.2 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: (301) 975-1007
Email: support@patton.com
www: http://www.patton.com
Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model IM2RC/F-128K. Technical Service hours: 8AM to 5PM EST,
Monday through Friday.
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 arise during installation or use of this product, please contact Patton Electronics Technical
Support at: (301) 975-1007.
2.1 FEATURES
• Designed for use with Patton Electronics short range modem
access products that receive Patton’s Rear Card modules and
support 128k synchronous data rates
• 120 ohm RJ-45 Network Termination
• Complies with ITU-T G.823 Jitter Control Specifications
• Supports Clear Channel
• Built-in Transformer Isolation and Surge Protection
• Supports Network or Modem Timing
• Fits in Patton’s 2u (3.5”) rack chassis and cluster boxes
• Made in the U.S.A.
2.2 DESCRIPTION
The Patton Model IM2RC/F-128K is a rack-mountable rear card
that allows Patton baseboard modems to connect to modified 128 kbps
G.703 devices. With the IM2RC/F-128K you can achieve high speed
G.703 network extension, dedicated high speed internet access,
remote LAN access,...the possibilities are endless! Supporting 128kbps
clear channel, the IM2RC/F-128K can set its own clock or it take clocking from the G.703 network.
The Model IM2RC/F-128K meets baseband modem function cards
such as 1094ARC and 1095RC in the mid-plane of Patton’s 2U (3.5”)
rack chassis. G.703 access is accomplished via a 120 Ohm RJ-45
jack. The twisted pair line connections between the baseboard
modems (2-W or 4-W) are made with the second RJ-45 jack.
The Model IM2RC/F-128K features on-board transformer isolation
and surge protection as well as compliance with ITU-T G.823 Jitter
Control Specifications.
NOTE: Packages received without an RMA number will not be
accepted.
WARNING! This device is not intended to be connected
to the public telephone line.
5 6
3.0 CONFIGURATION
This section describes how to configure the IM2RC/F-128K rear
card. Please refer to the appropriate function card user manual to configure the function card.
3.1 CONFIGURING THE IM2RC/F-128K HARDWARE SWITCHES
The Model IM2RC/F-128K rear card features an eight position DIP
switch mounted on the rear of the printed circuit board. Use these
switches to configure G.703 operational and timing modes. Figure 1,
below shows the position of the DIP switches on the board.
Figure 2 shows the orientation of the DIP switches with respect to
the “ON” and “OFF” positions.
Switch S1:
Reserved for Future Use
Switch S1 is reserved for future use and should remain in the Off
position.
Switch S2: Operation Mode
Use Switch S2 to set the IM2RC/F-128K for Clear
Channel/Unstructured mode.
S2
Setting
Off Clear Channel/Unstructured Mode (default)
On Reserved for Future Use
Switches S3 Timing Mode
The setting of Switch S3 determines the source of the system tim-
ing.The system timing may be provided by:
1. The G.703 network, or
2. The local function card or remote baseband
modem/CSU/DSU (either a rackable function card or standalone unit).
Figure 2. Close up of Configuration switches
Figure 1. Model IM2RC/F-128K Card Showing DIP Switches
OFF
OFF
ON
ON
DIP Switches
WARNING! The IM2RC/F-128K card contains sensitive inte-
grated circuitry. Failure to ground yourself during configuration
may result in damage to the IM2RC/F-128K card or the front function card.
Notice! The RJ-45 G.703 port of the Model IM2RC/F-128K is
intended to connect to telecommunication network voltage
(TNV) circuits which may carry dangerous voltages. Therefore
the power and network cables must be disconnected prior to
switch configuration.
Position Function Factory Default
S1
Reserved for Future Use
Off
S2 Operation Mode Off
Clear Channel
S3 Timing Mode Off Network Timing
S4
Reserved for Future Use
Off
S5
Reserved for Future Use
Off
S6 G.703 Transmit Octet Off
Injected BPVs
S7
Reserved for Future Use
Off
S8
Reserved for Future Use
Off
SWITCH SUMMARY TABLE
1 2 3 4 5 6 7 8
ON
12345678
7 8
Set Switch S3 to “Network” timing to derive timing from the G.703
access port.
Set Switch S3 to “Modem” timing to derive timing from the
received line.
You must also set the timing on the NetLink front card. The table
below shows the appropriate setting for the IM2RC/F-128 timing
modes.
Switches S4 and S5:
Reserved for Future Use
Switches S4 and S5 are reserved for future use and should
remain in the Off position.
Switch S6: Operation Mode
In some cases it is necessary to include bi-polar violations in the
AMI structure when operating in Clear Channel (128 kbps) mode. This
necessity is determined by communications or terminal equipment
external to the the IM2RC/F-128K. Use Switch S6 to configure the unit
to transmit G.703 data to the network with or without BPVs.
S6
Setting
On No BPVs
Off Injected BPVs
Switches S7 and S8:
Reserved for Future Use
Switch S7 and S8 are reserved for future use and should remain
in the Off position.
3.2 CONNECTING THE INTERFACE DRIVER BOARD
This package contains an interface driver board that allows you to
configure your front function card for G.703 operation. Figure 3 shows
the Interface Driver Board connected to a Model 1092ARC front function card (You may also use this product with other Patton rack cards,
such as Model 1094ARC and 1095RC).
Follow the instructions below to connect the interface driver board
to the front function card:
1. With the function card (such as 1092ARC, shown above)
pulled out of the rack or clusterbox chassis, locate the driver
board to be replaced on the top of the base unit front card.
2. Lift the old interface board gently off of the PC board.
3. Position the IM2RC/F-128K driver board on top of the function
card’s pc board with the sockets oriented toward the male
pins. Please be sure the label marked FRONT is
pointed toward the front of the function card (toward the
LEDs).
4. Push the Interface Driver Board gently onto the socket and reinstall the function card into the rack or cluster system.
Figure 3 Model IM2RC/F Driver Board mounted on Model 1092ARC
Interface Driver Board
Model
1092ARC
FRONT
TABLE FOR TIMING CONFIG.
IM2RC/F-128 NetLink Card
Network External
Modem Receive Recover Internal
ON
ON
ON
12345678
12345678
1234
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4.0 INSTALLATION
This section describes the functions of the Model 1000R16 rack
chassis, tells how to install the rear-mounted Model IM2RC/F-128K
card into the chassis, and how to connect to the G.703 PCM network,
and to the twisted pair line interface. Please refer to the appropriate
function card user manual for further details.
4.1 THE MODEL 1000R16 RACK CHASSIS
The Model 1000R16 Rack Chassis (Figure 4, below) has sixteen
baseband modem card slots, plus its own power supply. Measuring
only 3.5” high, the Model 1000R16 is designed to occupy only 2U in a
19” rack. Sturdy front handles allow the Model 1000R16 to be extracted and transported conveniently.
4.1.1 The Rack Power Supply
The power supply included in the Model 1000R16 rack uses the
same mid-plane architecture as the function cards. The front function
card and the power supply slide in from the front, while the rear card
and power entry modules slide in from the rear. They plug into one
another in the middle of the rack. The front card is then secured by
thumb screws and the rear card by conventional metal screws.
4.2 INSTALLING THE REAR IM2RC/F-128K CARD AND FRONT
FUNCTION CARD
The Model IM2RC/F-128K is a rear-mountable G.703 interface
card that works with Patton function card access products that support
64k/128k synchronous data rates. The two cards meet inside the rack
chassis and plug into each other by way of mating 50 pin card edge
connectors. Use the following steps as a guideline for installing each
Model IM2RC/F-128K and its function card mate into the rack chassis:
1. Slide the IM2RC/F-128K rear card into the back of the chassis
along the metal rails provided.
2. Secure the IM2RC/F-128K rear card using the metal screws
provided.
3. Slide the front function card into the front of the chassis. It
should meet the IM2RC/F-128K rear card when it is almost all
the way into the chassis.
4. Push the front card
gently
into the card-edge receptacle of the
rear card. It should “click” into place.
5. Secure the front card using the thumb screws.
Figure 4: Model 1000R16 Rack Chassis with power supply
WARNING! There are no user-serviceable parts in the power
supply section. Voltage setting changes and fuse replacement
should only be performed by qualified service personnel.
Contact Patton Electronics Technical support at (301)975-1007
for more information.
NOTE: Please refer to the Model 1000RP Series User Manual
AC and DC Rack Mount Power Supplie
s for fuse and power card
replacement information.
WARNING! The IM2RC/F-128K card contains sensitive inte-
grated circuitry. Failure to ground yourself during installation
may result in damage to the IM2RC/F-128K card or the front
function card.
11 12
4.3 MAKING INTERFACE CONNECTIONS
The Model IM2RC/F-128K is designed to provide access to a 64
kbps co-directional G.703 PCM network. Figure 5 shows the position
of the G.703 interface and the line interface of the IM2RC/F-128K.
This section describes how to connect the G.703 interface and the line
interface.
4.3.1 CONNECTING TO A G.703 PCM NETWORK CHANNEL
The 120 Ohm RJ-45 port on a Model IM2RC/F-128K is pre-wired
for direct connection to the G.703 PCM network. Connect the RJ-45
jack provided by your digital service carrier to the 120 Ohm G.703
interface on the Model IM2RC/F-128K using a straight through twisted pair cable between 19 and 26 AWG (0.4mm to .9mm, inversely).
To be sure you have the right wiring, refer to Figure 6, on the following
page.
4.3.2 CONNECTING THE LINE INTERFACE
The Model IM2RC/F-128K is to be used with Patton function card
access products (i.e. 1092RC, 1092ARC, 1094ARC and 1095RC) that
support 128k synchronous data rates. There are two essential requirements for connecting the line interface on Model IM2RC/F-128K:
1. These units work in
pairs
. Both units at the end of the twisted
pair must have the proper 2-Wire/4-Wire setting. For instance,
if you are operating in 2-Wire mode, both units must be in the
2-Wire setting. Similarly, if you are operating in 4-Wire mode,
both units must be in the 4-Wire setting. NOTE: Currently
only the 1092, 1092A, and 1095 families support 2-Wire
Mode.
2. To function properly, the Model IM2RC/F-128K needs one or
two twisted pairs of metallic wire. The twisted pairs must be
unconditioned
, dry, metallic wire, between 19 (.9mm) and 26
AWG (.4mm) (Appendix B describes cable requirements) .
Standard dial-up telephone circuits, or leased circuits that run
through signal equalization equipment, or standard, flat modular telephone type cable, are
not acceptable
. Figure 7, below,
shows the pin/signal relationships of the Line Interface Port.
120 Ohm RJ-45
G.703 Interface
RJ-45 Line Interface
Figure 5: Model IM2RC/F128-K Interface Ports
Figure 6: 120 Ohm RJ-45 G.703 Interface
1 (RX)
2 (RX)
3 (N/C)
4 (TX)
5 (TX)
6 (N/C)
7 (N/C)
8 (N/C)
1
2
3
4
5
6
7
8
Notice! The G.703 line surge protection on this unit was installed
for circuit protection only. By no means does this include the
preservation of signal quality during a large surge.
Figure 7: RJ-45 Line Interface
1 (4-Wire RX+)
2 (4-Wire RX-)
3 (no connection)
4 (2-Wire TIP)/(4-Wire TX+)
5 (2-Wire RING)/(4-Wire TX-)
6 (no connection)
7 (no connection)
8 (no connection)
1
2
3
4
5
6
7
8
13 14
4.3.3 Two-Wire and Four-Wire Cable Connection Via RJ-45
1. The Line Interface Port on the Model IM2RC/F-128K’s twisted
pair interface is polarity insensitive and is wired for a two-wire
interface.
2. Proper 2-Wire Pairing between the two modems is as follows:
SIGNAL
PIN# PIN# SIGNAL
TIP 4--------------------------------------------- 4 TIP
RING 5--------------------------------------------- 5 RING
3. Proper 4-Wire
Pairing between the two modems is as follows:
SIGNAL
PIN# PIN# SIGNAL
Tx 4--------------------------------------------- 3 Rx
Tx 5--------------------------------------------- 6 Rx
Rx 3--------------------------------------------- 4 Tx
Rx 6--------------------------------------------- 5 Tx
5.0 OPERATION
Once the Model IM2RC/F-128K is installed and configured, it
should operate transparently. This sections describes a typical application and general operating instructions.
5.1 TYPICAL APPLICATION
The Model IM2RC/F-128K allows a remotely connected LAN or
high speed application to connect to the 128/G.703 (PCM) network
through a pair of Patton baseband modems. Figure 8 (below) shows a
typical application of the IM2RC/F-128K.
5.2 OPERATING INSTRUCTIONS
In order to operate, the Model IM2RC/F-128K must be installed in
the rear of a Patton 16 port rack or a 2, 4, or 8 port ClusterBox™ chassis. A front function card, such as a baseband modem, CSU/DSU, or
HDSL modem meets the IM2RC/F-128K rear card in the mid-plane of
the chassis. The IM2RC/F-128K also requires a G.703 connection to
the 128 kbps co-directional PCM network and a line connection to a
remote Patton transmission device. After applying power, the function
card and IM2RC/F-128K operate transparently according to the applied
settings (Please refer to the function card manual for further details).
NOTE: The pin designations shown above are to be used
when connecting to another IM2RC/F-128K or other similarly
pinned line interface on a Patton rear card. Please review the
appropriate function card user manual or stand-alone product
user manual to determine the correct pin assignments.
Figure 8: IM2RC/F-128K Typical Application
LAN
Router
G.703
PCM
Network
Rack-Mounted
Baseband Modem, CSU/DSU,
HDSL Modem, etc. with
IM2RC Rear Card
Remote Baseband
Modem, CSU/DSU, HDSL
Modem, etc.
15 16
APPENDIX A
PATTON ELECTRONICS MODEL IM2RC/F-128K
SPECIFICATIONS
Applications: 128kbps G.703 PCM network extension
G.703 Interfaces: Symmetrically balanced 4-wire, 120 Ohm
RJ-45 jack termination
Line Interface: Entire module plugs into 1092RC,
1092ARC, 1094ARC, and 1095RC HDSL
Series Patton transmission devices products
Operating Modes: Supports clear channel mode; co-direction-
al timing, Rx recovered: 128 kbps±500ppm.
Line Encoding: AMI with bi-polar violations for octet timing.
Timing Modes: Modem or network timing
G.703 Input
Signal Sensitivity: 0 to 9 dB loss @ 250 Khz
Transmit Level: 2.0V differential into 100 Ohms, nominal
Load Impedance: 120 Ohms
Jitter Performance: CTR 14, G.823
Surge Protection: Complies with IEC 801.5 level 1, 500V
Isolation: 1500V RMS isolation, transformer coupled
PCB Dimensions: 2.04” x 3.24”
Compliance: CE Mark
Power Consumption: <180mA @ 10 VAC RMS, including integrat-
ed front card modem with the rack card
power supply under full load
Temp. Range: 0 - 60º C (32 - 140º F)
Altitude Range: Up to 15,000 ft (4572 m)
Humidity Range: 5 - 95% non-condensing
APPENDIX B
PATTON ELECTRONICS MODEL IM2RC/F-128K
CABLE RECOMMENDATIONS
All Patton Electronics Company Baseband Modems, CSU/DSUs
and Short Range Modem are tested to the distances published in our
Catalogs and Specification Sheets on twisted-pair cable with the following characteristics:
Wire Gauge Capacitance Loop Resistance
19 AWG 83nF/mi or 15.72 pF/ft. .0163 ohms/ft.
22 AWG 83nF/mi or 15.72 pF/ft. .0326 ohms/ft.
24 AWG 83nF/mi or 15.72 pF/ft. .05165 ohms/ft.
26 AWG 83nF/mi or 15.72 pF/ft. .08235 ohms/ft.
We fully expect that the Baseband Modems, CSU/DSUs and Short
Range Modems will operate on lines with specifications different from
those tested, but to reduce the potential difficulties in the field, one
should ensure that the cable being used has similar or better characteristics (lower capacitance or lower resistance).
Wire with capacitance of 20pF/ft. or less is suitable for all Baseband
Modems, CSU/DSUs and Short Range Modems. However, distances
may vary from those published in our catalog. Resistance will also
affect distance but not functionality. Wire should be 26 AWG or larger
(smaller AWG#).
Patton products are designed to withstand normal environmental
noise and conditions; however, other environmental factors too numerous to discuss in this format may affect proper operation.
Selection of the proper Baseband Modem, CSU/DSU or SRM for
an application is critical to maintaining Customer Satisfaction and must
be taken seriously. Certain models are better suited for particular
applications and environments than others.
17 18
APPENDIX C
PATTON ELECTRONICS IM2RC/F-128K
FACTORY REPLACEMENT PARTS AND ACCESSORIES
P
atton Model # Description
1000RCM12592.........Rear card w/DB25F & RJ45 (V.24 interface)
1000RCM12492.........Rear card w/ M/34F & RJ45 (V.35 interface)
1000RPEM ................120/240V Rear Power Entry Module
1000RPSM-2.............120/240V Front Power Supply Module
1000RPEM-DC..........DC Rear Power Entry Module
1000RPSM-48A.........48V Front Power Supply Module
1000RPEM-V.............120/240V CE Compliant Rear Power
Entry Module
1000RPEM-V.............120/240V CE Compliant Rear Power
Supply Entry Module
1000CC......................Control Card
1000RCM703/64DB...Interface daughter card, G.703
1180RCDB.................Interface daughter card, V24/V.35
0805US......................American Power Cord
0805EUR...................European Power Cord CEE 7
0805UK......................United Kingdom Power Cord
0805AUS ...................Australia/New Zealand Power Cord
0805DEN...................Denmar k Power Cord
0805FR......................France/Belgium Power Cord
0805IN.......................India Power Cord
0805IS .......................Israel Power Cord
0805JAP....................Japan Power Cord
0805SW.....................Switzerland Power Cord
IM2RC/F-128K...........G.703 Rear Card
APPENDIX D
PATTON ELECTRONICS IM2RC/F-128K
120 OHM G.703 INTERFACE PIN ASSIGNMENT
(RJ45 Female Connector)
Pin Number Signal
1...........................................RX
2 ..........................................RX
3 ..........................................no connection
4...........................................TX
5 ..........................................TX
6 ..........................................no connection
7 ..........................................no connection
8 ..........................................no connection
19
APPENDIX E
PATTON ELECTRONICS IM2RC/F-128K
LINE INTERFACE PIN ASSIGNMENT
(RJ45 Female Connector)
Pin Number Signal
1...........................................4-Wire RX
2 ..........................................4-Wire RX
3 ..........................................no connection
4...........................................2-Wire TIP/4-Wire TX
5 ..........................................2-Wire RING/4-Wire TX
6 ..........................................no connection
7 ..........................................no connection
8 ..........................................no connection
Copyright 1999
Patton Electronics Company
All Rights Reserved
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