Patton electronics 460 SERIES Manual de usuario

USER

MANUAL

MODEL 460 SERIES

G.703 Coax toTwisted

Pair Adapter (Balun)

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

Part# 07M460

Doc# 019021U Rev. G

Revised 9/15/04

An ISO-9001

Certiﬁed Company

CONTENTS

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

1.1 Service and Support..................................................................... 3

1.2 CE Notice...................................................................................... 3

2.0 Product Description ................................................................... 4

2.1 RJ-45 Jack and Terminal Block Descriptions............................... 5

3.0 Configuration .............................................................................. 6

4.0 Installation................................................................................... 8

4.1 Installing the Model 460................................................................ 8

4.2 Installing the Model 460-TBP........................................................ 8

A Specifications ........................................................................... 10

A.1 Transmission Line ....................................................................... 10

A.2 Data Rate .................................................................................... 10

A.3 Unbalanced Coaxial Connection ................................................ 10

A.4 Balanced Twisted Pair Connection ............................................. 10

A.5 Power Supply .............................................................................. 10

A.6 Operating Temperature .............................................................. 10

A.7 Coaxial Twisted Pair Isolation ..................................................... 10

A.8 Compliance ................................................................................. 10

A.9 Dimensions ................................................................................. 10

1.0 WARRANTY INFORMATION

Patton Electronics

warrants all Model 460 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 prod-

uct.

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 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 Service at

(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 questions that might arise concerning the installa-

tion or use of your Model 460.Technical Service hours:

8 am

5 pm EST

(

1300

2200

UTC

), Monday through Friday.

1.2 CE NOTICE

The CE symbol on your Patton Electronics equipment indicates that it is

in compliance with the Electromagnetic Compatibility (EMC) directive of

the European Union (EU). A Certiﬁcate of Compliance is available by

contacting Patton Technical Support.

2.0 PRODUCT DESCRIPTION

The

Patton Model 460 Series

enables 75-ohm coax hardware to com-

municate with 120-ohm twisted-pair equipment.The Model 460 Series

speciﬁcally address the ONP requirement that European PTTs offer 120-

ohm twisted-pair terminations to their customers.Some PTTs and pri-

vate carriers are standardized on 75-ohm coax, or have customers

whose CPE has only 75-ohm coax connections.The Model 460 Series

provide a ready solution to this termination mismatch by allowing a bi-

directional conversion of coax (75 ohm) to a twisted-pair (120-ohm), sup-

porting data rates to E1 (2.048 Mbps).The signals output by them are

scaled to match the pulse shape requirements speciﬁed by the CCITT

G.703 standard.

The Model 460 is available in the following versions:

• 460F

– A shielded RJ-45 jack.

– Two female coaxial connectors

• 460M

– A shielded RJ-45 jack.

– Two male coaxial connectors

• 460F-TBP

– A 4-position terminal block.

– Two female coaxial connectors

• 460M-TBP

– A 4-position terminal block.

– Two male coaxial connectors

• 460MC

– A shielded RJ-45 jack.

– Two 6-in.coaxial cables with male connectors

Figure 1.

Model 460 functional diagram

2.1 RJ-45 JACK AND TERMINAL BLOCK DESCRIPTIONS

Shielded RJ-45 Jack:

• Pins 1 and 2 (see Figure 1) are the balanced inputs.The balanced sig-

nals are converted to an unbalanced signal on the center conductor of

the TX Out coax connector.

• The unbalanced signal from the RX In coax connector is converted to

balanced signals on pins of the RJ-45.

• The shield of the RX In connector may be connected to RJ-45 pin 6 by

jumper JP2 (on).

• The shield of the TX Out connector is always connected to the shield

around the RJ-45 connector.This connection may also be connected

to RJ-45 pin 3 via JP1 (on).

Terminal Block:

• Has a 4 pin terminal block for a twisted pair connection.

• The 460-TBP has coaxial connectors.

3.0 CONFIGURATION

Note

If you have a Model 460-TBP, it does not require conﬁguration;

refer to section 4.0, “Installation” on page 8.

The following section describes conﬁguring the Model 460.The Model 460

Series are preset to work in most applications without additional conﬁguration.

The only parameter that is user-conﬁgurable is whether there is a shield con-

nection between the 75-ohm coax and 120-ohm interfaces.Figure 1 on

page 5shows how theshield isconnectedbetween the modularjackanddual

BNCs.Removing the jumper breaks the shield connection.

The Model 460 is most often used to bi-directionally convert CPE

twisted-pair terminations to CPE coaxial terminations.

Figure 2.

JP1 and JP2 locations for 460F and 460MC

The factory setting leaves jumpers JP1 and JP2 (see Figure 2 above and

Figure 3 on page 7) in place, thus passing both shield connections

through.To change one or both of the shield connections, do the following:

1. Insert a ﬂat-blade screwdriver into the slot on the side of the Model

460 case and twist.The case will pop open, exposing the printed cir-

cuit board.

RJ-45 (120 ohm) Jumper Coax BNC (75 ohm)

Pin 3 (TX Shield) JP1 TX Out Shield

Pin 6 (RX Shield) JP2 RX In Shield

JP1

JP2

Figure 3.

JP1 and JP2 locations for 460M

2. Using Figure 2 as a reference, remove the desired jumper(s) to

break one or both shield connections.

Note

Do not lose the jumper(s).

3. Align the case halves and end inserts and snap the case halves

back together.

JP1

JP2

4.0 INSTALLATION

The sections on the next page describe installing the following:

• Model 460 (see section 4.1, “Installing the Model 460” on page 8)

• Model 460-TBP (see section 4.2, “Installing the Model 460-TBP” on

page 8)

Refer to the appropriate section to install your unit.

4.1 INSTALLING THE MODEL 460

Do the following:

1. Refer to the pin conﬁguration below when assembling the cable that

will connect to the RJ-45 jack.

2. Plug the modular cable connector into the RJ-45 jack.

3. Connect the coaxial cables to the TX Out and RX In connectors.

Congratulations, you have ﬁnished installing the Model 460!

4.2 INSTALLING THE MODEL 460-TBP

Do the following:

1. Strip the outer jacket insulation from the twisted pairs about 1 inch.

2. Strip back the insulation on each of the wires about 0.25 inches.

RJ-45 Pin(s) Function

1 and 2 TX pair

3 TX shield

4 and 5 RX pair

6 RX shield

Figure 4.

Model 460-TBP terminal block interface wiring diagram

3. Connect one pair of wires to the two XMT (transmit) positions on the

terminal block.The Model 460-TBP is not polarity sensitive so either

wire may connect to either pole.See Figure 4.

4. Connect the other pair of wires to the two RCV (receive) positions

on the terminal block.

5. Connect the coaxial cables to the TX Out and RX In connectors.

Congratulations, you have ﬁnished installing the Model 460-TBP!

Gaithersburg, Maryland

Model 460F-TBP

G.703 Balun

S/N:9912130009 Lot: 00774

RX In TX Out

RCV XMT

Terminal block

Clamp

screws

(4 places)

RX In

TX Out

RCV

XMT

Coax

CPE

Twisted-pair

CPE

XMT RCV

RCV XMT

XMT

RCV

Pair 1

Pair 2

APPENDIX A

SPECIFICATIONS

A.1 TRANSMISSION LINE

ITU/CCITT G.703 (unstructured)

A.2 DATA RATE

2.048 Mbps maximum

A.3 UNBALANCED COAXIAL CONNECTION

• Dual coax female BNC connectors (RG 59 or 2002 coax)

• Nominal line impedance: 75 ohms

A.4 BALANCED TWISTED PAIR CONNECTION

• Single 8-pin RJ-45 jack, shielded (two twisted-pair)

• Nominal line impedance: 120 ohms

• 4-position, removable terminal block

A.5 POWER SUPPLY

None required, passive device

A.6 OPERATING TEMPERATURE

32–122°F (0–50°C)

A.7 COAXIAL TWISTED PAIR ISOLATION

1500 Vrms

A.8 COMPLIANCE

CE approved

A.9 DIMENSIONS

0.8H x 1.7W x 2.7D in. (6.86H x 4.32W x 2.03D cm.)

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