Patton electronics 460RC Manuel utilisateur

USER

MANUAL

MODEL 460RC

Rack-Mounted G.703 Coax to

Twisted Pair

Adapters (BALUNs)

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

http://www.patton.com

Part # 07M460RC-A

Doc. #019081UA

Revised 3/13/98

An ISO-9001

Certified Company

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 460RC 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 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 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 Patton

Technical Support.

1.2 SERVICE AND SUPPORT

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 Service at (301) 975-1007; http://www.patton.com: or,

[email protected].

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

Model 460RC. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

1 2

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

• Connects 75 Ohm Dual Coax to 120 Ohm Twisted Pair

• Bi-Directional Signal Conversion According to CCITT G.703

• Data Rates up to 2.048 Mbps

• Low Profile Design

• Mounts in Standard 19” (48.3 cm) Rack

• No AC Power or Batteries Required

• Male or Female Coax BNC Connectors Available

• Strap Selectable Modular (RJ-45) Pinouts

2.2 DESCRIPTION

The Patton 460R Series G.703 balun panels match multiple sets of

dual 75 ohm coax connections to multiple 120 ohm twisted pair

connections. This function allows carriers to provide 120 ohm G.703

service to customers retaining 75 ohm CPE hardware. It also allows

carriers who have standardized on 75 ohm coax to provide 120 ohm

terminations to their customers (in keeping with European ONP

requirements).

Supporting E1 data rates to 2.048 Mbps, the Patton 460-R Series

panels bi-directionally match, not only signal impedance, but also the

pulse shapes of the signals according to the CCITT G.703 standard.

The Patton 460-R Series G.703 balun panels mount in a standard 19”

(48.3 cm) rack, and are available with either 1 to 16 modules per rack.

3.1.1 Jumper Straps JP1, JP2, JP3, JP4, and JP7

The jumper straps allow you to set shielding and grounding options

for the Model 460RC/F. The settings for each jumper strap are shown

briefly in the table below. Following this table are more detailed

explanations of each jumper.

Jumper JP1: 75 Ohm TX Shield to 120 Ohm TX Pair Shield (Pin 3)

In the default “Connected” setting, the 75 Ohm transmit out coaxial

shield connects to RJ-45 pin 3, the transmit pair shield.

JP1 Setting Description

Position 1 & 2 Not Connected 75 Ohm TX shield not

connected to RJ-45 TX

pair shield (Pin 3).

Position 2 & 3 Connected 75 Ohm TX shield

connected to RJ-45 TX

pair shield (Pin 3).

Jumper JP2: 75 Ohm Shield to 120 Ohm Overall Shield

In the default “Connected” setting, the 75 Ohm transmit out coaxial

shield connects to the RJ-45 overall foil shield.

JP2 Setting Description

Position 1 & 2 Connected 75 Ohm TX shield

connected to the RJ-45

overall foil shield.

Position 2 & 3 Not Connected 75 Ohm TX shield not

connected to the RJ-45

overall foil shield.

3.0 CONFIGURATION

Each Model 460RC/F Module is equipped with four jumpers that

you may use to configure several grounding options. This section

shows the jumper locations and describes their functions.

3.1 SETTING THE JUMPER STRAPS

There are five configuration jumpers on the back side of the Model

460RC/F printed circuit board. These jumpers are labeled below and

on the PC board as “JP1”, “JP2”, “JP3”, “JP4”, and “JP7”. Figure 1,

below, shows their positions on the pc board as well as the relative pin

numbers on the jumpers.

Figure 2 (below) shows the orientation of the rear interface card

straps. Observe that the strap can either be on posts 1 and 2, or on

posts 2 and 3.

Figure 1. Individual Model 460RC/F Card

JP3

JP4

JP7

JP2

JP1

Figure 2. Possible Positions for Model 460RC/F Jumpers

INTERFACE CARD STRAP SUMMARY TABLE #1

Strap Function Position 1&2 Position 2&3

JP1 Coax TX Shield & RJ45 Pin 3 Open* Connected

JP2 Coax TX Shield & RJ-45 Shield Connected* Open

JP3 Coax RX Shield & RJ-45 Shield Connected* Open

JP4 Coax RX Shield & RJ-45 Pin 6 Open* Connected

JP7 RJ-45 Shield & Chassis Ground Connected* Open

* Indicates default setting

Jumper JP3: 75 Ohm RX Shield to 120 Ohm Overall Shield

In the default “Connected” setting, the 75 Ohm receive in coaxial

shield connects to RJ-45 pin 6, the receive pair shield.

JP3 Setting Description

Position 1 & 2 Connected 75 Ohm RX shield

connected to the RJ-45

overall foil shield

Position 2 & 3 Not Connected 75 Ohm RX shield not

connected to the RJ-45

overall foil shield

Jumper JP4: 75 Ohm RX Shield to 120 Ohm Rx Pair Shield (Pin 6)

In the default “Connected” setting, the 75 Ohm coaxial shield

connects to the RJ-45 overall foil shield.

JP4 Setting Description

Position 1 & 2 Not Connected 75 Ohm RX shield not

connected to the RJ-45

RX pair shield (Pin 6)

Position 2 & 3 Connected 75 Ohm RX shield

connected to the RJ-45

RX pair shield (Pin 6)

Jumper JP7: RJ-45 Shield to Chassis Ground

In the default “Connected” setting, the RJ-45 overall shield

connects to chassis ground.

JP7 Setting Description

Position 1 & 2 Connected RJ-45 shield connects

to Frame Ground.

Position 2 & 3 Not Connected RJ-45 shield does not

connect to Frame

Ground.

5 6

4.0 INSTALLATION

This section describes the functions of the Model 460RC16 rack

chassis, tells how to install front and rear Model 460RC/F Series cards

into the chassis, and how to connect to the twisted pair interface and

the serial interface.

4.1 THE MODEL 460R16 RACK CHASSIS

The Model 460R16 Rack Chassis (Figure 3, below) can

accomodate up to 16 G.703 75 Ohm coax to 120 Ohm RJ-45 baluns.

Measuring only 3.5” high, the Model 460R16 is designed to occupy only

2U in a 19” rack. Sturdy front handles allow the Model 460R16 to be

extracted and transported conveniently.

4.2 INSTALLING THE MODEL 460RC/F MODULE INTO THE

CHASSIS

The Model 460RC16 comprised of a 2U high rack chassis and

individually mountable G.703 balun modules. You may purchase a fully

populated 16 port rack or you may purchase individual modules. Refer

to Figure 4 as a guide and follow the steps below to install each Model

additional 460RC/F module into the rack chassis:

1. Slide the two star washers over the screws on each end of the

mount space.

2. Slide the Model 460RC/F pc board over the screws with the

BNC connectors facing downward. Then push the BNC

connectors and RJ-45 connector through the matching slots in

the front of the rack assembly.

3. Slide a plastic spacer over each screw to secure the pc board.

Figure 3. Fully Populated Model 460RC16 Rack Chassis

4. Install the lexan shield over the spacers.

5. Secure the 460RC/F card assembly by connecting a lock

washer and hex nut on each screw.

4.3 CONNECTING THE 75 OHM BNC PORTS

The 75 Ohm BNC ports on the front of the 460R16 are labeled

“TX” (Transmit Data Output) and “RX” (Receive Data Input). Simply

connect the G.703 lines as follows*:

G.703 Network Model 460RC/F

BNC Connector BNC Connectors

TX RX

RX TX

*NOTE: The total allowable cable lengths are subject to the

constraints of the ITU/CCITT G.703 recommendation. However,

we recommend a total patch cable length, including coaxial and

twisted pair cabling, of no more than 320 feet (200m).

4.4 CONNECTING THE 120 OHM RJ-45 PORTS

The pin configuration of the 120 Ohm twisted pair port is shown

below:

RJ-45 Pin(s) Function

1................................TX Output

2................................TX Output

3................................TX Shield

4................................RX Input

5................................RX Input

6................................RX shield

7................................no connection

8................................no connection

Simply install the twisted pair wires by making the following

connections.

G.703 Model 460RC/F

Instrument RJ-45 Pin No.

TX Output 4

TX Output 5

TX Shield 3

RX Input 1

RX Input 2

RX Shield 6

*NOTE: The total allowable cable lengths are subject to the

constraints of the ITU/CCITT G.703 recommendation. However,

we recommend a total patch cable length, including coaxial and

twisted pair cabling, of no more than 320 feet (200m).

Figure 4. Mounting a Model 460RC/F Module to the Rack

Spacer

Star Washer (behind

460RC/F Module)

460RC/F Modules

Lexan Shield

Lock Washer

Hex Nut

7 8

APPENDIX A

PATTON ELECTRONICS MODEL 460RC

SPECIFICATIONS

Transmission Line: CCITT G.703 (unstructured)

Data Rate: 2.048 Mbps

75 Ohm Connection: Dual coax BNC connectors, male or

female (RG 59 or 2002 coax)

120 Ohm Connection: Shielded RJ-45 jack

Power Supply: none required

Link-to-Data Isolation: 500 volts AC/DC

Temperature Range: 32-122°F (0-50°C)

Dimensions (w/o handles): 19" Wide x 3.5" High x 1.9” Deep

(48.3 x 8.9 x 4.8 cm)

APPENDIX B

PATTON ELECTRONICS MODEL 460RC

FACTORY REPLACEMENT PARTS

AND ACCESSORIES

Model # Description

460R16......................Empty Balun Rack Panel

460RC/F ....................G.703 Balun Rack Module

05R16S460RC...........Lexan Shield

056345.......................Star Washer

0562-06......................Spacer

0561LW......................Lock Washer

055.............................Hex Nut

07M460RC.................Model 460RC User Manual

9 10

APPENDIX D

PATTON ELECTRONICS MODEL 460RC/F

BLOCK DIAGRAM

Patton Electronics Company

APPENDIX C

PATTON ELECTRONICS MODEL 460RC/F

PIN ASSIGNMENTS

120 OHM TWISTED PAIR INTERFACE

RJ-45 Jack Pin No./Signal

1 - Transmit Data Out

2 - Transmit Data Out

3 - Transmit Data Shield

4 - Receive Data In

5 - Receive Data In

6 - Receive Data Shield

7 - no connection

8 - no connection

11 12

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