Patton electronics 450RC24 Manuale utente

USER

MANUAL

MODEL 450RC24

Ultra High Density

G.703 Balun Panel

(75-Ohm Coax to

120-Ohm 50-pinTelco)

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

Part # 07M450RC24-A

Doc. # 019151U

Released 6/25/01

An ISO-9001

Certiﬁed

Company

CERTIFIED

TABLE OF CONTENTS

1.0 Warranty Information .................................................................. 3

1.1 CE Notice...................................................................................... 3

1.2 Service and Support..................................................................... 3

2.0 General Information..................................................................... 4

2.1 Features........................................................................................ 4

2.2 Description.................................................................................... 5

3.0 Installation.................................................................................... 6

3.1 Reversing the Cover..................................................................... 6

3.2 Connecting the 75-Ohm BNC Ports.............................................. 7

3.3 Connecting the 120 Ohm 50-pin Telco Ports................................ 7

A Model 450RC24 Specifications................................................... 8

A.4 Transmission Line ..........................................................................8

A.5 Data Rate .......................................................................................8

A.6 75-Ohm Connection ......................................................................8

A.7 120-Ohm Connection ....................................................................8

A.8 Power Supply .................................................................................8

A.9 Link-to-Data Isolation .....................................................................8

A.10 Temperature Range .......................................................................8

1.11 Dimensions (Without Handles)..................................................... 8

B Model 450RC24 Factory Replacement Part............................... 9

C Model 450RC24 Block Diagram................................................ 10

1.0 WARRANTY INFORMATION

Patton Electronics

warrants all Model 450RC24 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 prod-

uct.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

spe-

ciﬁcally 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 LowVoltage Directive (LVD) of the Union European (EU).A Certiﬁcate

of Compliance is available by contacting PattonTechnical 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 Materi-

als Authorization number on the outside of the shipping container.This

number may be obtained from Patton Electronics Technical Support at

+1 (301) 975-1007

;

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 ques-

tions that might arise concerning the installation or use of your Model

450RC24.Technical Support hours:

8 AM to 5 PM 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

OneYear 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

• 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

• 1 U high enclosed chassis

• Reversable cover with integrated mounting ears

• Mounts in standard 19-in.(48.3 cm) rack

• No AC power or batteries required

• 24 female BNC pairs

• Two 50-pin Telco connectors for 120-Ohm interface

2.2 DESCRIPTION

The Patton 450RC24 G.703 Telco balun panel (see Figure 1) matches

24 sets of dual 75-ohm coax connections to 120-ohm Telco connections.

This function enables carriers to provide 120-ohm G.703 service to cus-

tomers retaining 75-ohm CPE hardware. It also enables carriers who

have standardized on 75-ohm coax to provide 120-ohm terminations to

their customers (in keeping with European ONP requirements).

Figure 1.

Model 450RC24

Supporting E1 data rates to 2.048 Mbps, the Patton 450RC24 panels bi-

directionally match signal impedance and pulse shapes according to the

CCITT G.703 standard.The Patton 450RC24 balun panels mount in a

standard 19-in. (48.3 cm) rack.

12345678910 11 12 13 14 15 16 17 18 19 20 21 22 23

3.0 INSTALLATION

This section describes how to connect to the twisted pair interface and

the serial interface.This section also describes procedures to reverse the

cover of the unit in order to mount the 50-pin Telco ports on the front of

the unit.

3.1 REVERSING THE COVER

The cover of the balun rack can be reversed in order to mount the 50-pin

Telco ports on the front of the unit, ﬂush with the mounting ears.To

remove the cover of the unit, remove the four cover screws from each

side of the unit (see Figure 2), lift the cover straight up, and re-attach the

cover with the 50-pin Telco ports on the front of the unit.

Figure 2.

Removing the cover screws

19 20 21 22 23

Cover screw

(8 places)

3.2 CONNECTING THE 75-OHM BNC PORTS

The 75-Ohm BNC ports on the front of the balun rack are labeled

(transmit data input) and

(receive data output).Connect the G.703

lines as shown in Figure 3.

Figure 3.

Model 450RC24 front panel

The numbers on each coax pair correspond to the 50-pin Telco ports on

the rear of the unit.

3.3 CONNECTING THE 120 OHM 50-PIN TELCO PORTS

The 120-Ohm balanced pairs are accessed via the 50-pin Telco con-

nectors J1 and J2.

Figure 4.

Model 450RC24 rear panel

The number of each coax pair corresponds to the two 50-pin Telco connector s pin numbers

on the rear panel. Coax pairs 1—12 terminate on Telco connector J1; 13—24 terminate on J2.

Receive

Transmit

24234567891011121314151617181920212223

J2 J1

APPENDIX A

MODEL 450RC24 SPECIFICATIONS

A.4 TRANSMISSION LINE

CCITT G.703 (unstructured)

A.5 DATA RATE

2.048 Mbps

A.6 75-OHM CONNECTION

Dual coax female BNC

A.7 120-OHM CONNECTION

50-pin Telco connector

A.8 POWER SUPPLY

None required

A.9 LINK-TO-DATA ISOLATION

500 volts AC/DC

A.10 TEMPERATURE RANGE

32–122°F (0–50°C)

1.11 DIMENSIONS (WITHOUT HANDLES)

19.0 W x 3.5 H x 1.9 D inch (48.3 W x 8.9 H x 4.8 D cm)

APPENDIX B

MODEL 450RC24 FACTORY REPLACEMENT PART

Model # Description

07M450RC24 Model 450RC24 User Manual

08450RC24 6-in. BNC Removal Tool

APPENDIX C

MODEL 450RC24 BLOCK DIAGRAM

The pinouts on the 50-pinTelco connectors are as shown in Figure 5 and

Figure 6 on page 11.

Figure 5.

Connector J1 pinout diagram

TX1+ 1

RX1+ 2

TX2+ 3

RX2+ 4

TX3+ 5

RX3+ 6

TX4+ 7

RX4+ 8

TX5+ 9

RX5+ 10

TX6+ 11

RX6+ 12

TX7+ 13

RX7+ 14

TX8+ 15

RX8+ 16

TX9+ 17

RX9+ 18

TX10+ 19

RX10+ 20

TX11+ 21

RX11+ 22

TX12+ 23

RX12+ 24

TX1-

RX1-

TX2-

RX2-

TX3-

RX3-

TX4-

RX4-

TX5-

RX5-

TX6-

RX6-

TX7-

RX7-

TX8-

RX8-

TX9-

RX9-

TX10-

RX10-

TX11-

RX11-

TX12-

RX12-

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