Features

Connection-ready module for E4/STM-1/OC3 applications

Maximum operating distance exceeds 200 meters on 75 ohm RG-6/u and RG-11/u coaxial cable

Tested and proven interface using AMCC S3015/S3016 chip sets

Loss-of-signal (LOS) detection

Low transmit/receive jitter

Encoder and decoder

Clock recovery

Typical power dissipation of 10.8W at 12Vdc (with voltage regulator)

See applicable specifications below

Copperhead

bi-directional fiber
(NRZ) to copper (CMI)
converters

Compact, easy to install
modules provide all
connections and signal conditioning
for NRZ/CMI network junctions

CopperheadTM bi-directional converters allow network developers to conveniently utilize both fiberoptic- and coax-con-

nected system components in network configurations, and to conduct bi-directional cross media data, voice, and video

communications at fibre speed data rates.

It provides a convenient, self-contained interface with all connections necessary for installation onto the network.

Besides the signal connections, all that is required is 12Vdc power.

The TC155/311 converts and conditions 155.52 Mb/s NRZ over fiber signals to 311 Mb/s CMI over copper signals for

Telecom/SONET (OC-3/STM-1) applications. It interfaces, regenerates, performs a protocol conversion, and clocks the

optical and electrical signals. It can be used in single and multi-mode fiber applications. The heart of the TC155/311

converter is its CopperheadTM transceiver, which minimizes output waveform jitter to ITU-T G.703 masking requirements

and corrects for the distortion of high frequency input signals received over coaxial cable. The proprietary transceiver permits

311 Mb/s communication over a remarkable distance of up to 200 meters of 75 ohm, RG-6/u coaxial cable.

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CE Certified

Meets FCC Class A, 55022 Class A CISPR

IEC 1000-4-2 EN50082-1, Criteria B, Level 2

IEC 801-3 EN50082-1, Criteria A

IEC 1000-4-4 EN50082-1, Criteria B, Level 3 (on I/O Ports)

IEC 950:(1991,1992,1993) Safety Regulations

Technical description

The TC155/311 Converter converts fiber (NRZ coding) to coax (CMI coding) and coax (CMI cod-

ing) to fiber (NRZ coding).

Coax (CMI) receiver: The receiver performs equalization, isolation (AC coupled), amplification

and clock recovery on the CMI serial data stream from coax. The serial data stream is decoded

from CMI to NRZ. The NRZ serial data stream is fed to the fibre transceiver (TX side).

Fiber (NRZ) receiver: Clock recovery is performed on the NRZ serial data stream received from

the fiber. The NRZ data is encoded to Coded Mark Inversion (CMI). The CMI data is converted

to an appropriate media drive level and is fed to the coax transceiver (TX side). Here, the signal

is pre-conditioned with an output filter to meet G.703 output masks (for binary "ones" and "zeros")

and launched on the coax cable through interfacing wideband pulse transformers.

Automatic reset circuit: The TC155/311 converter also includes an automatic reset when the

power is turned on, and when the coax or fiber signal detect goes from a logic low to a high.

-20 dB monitor access point: In addition, the converter includes a -20dB monitor access point.

This allows for utilizing the converter in applications where a -20dB buffer has been installed to

prevent disturbing the signal under test.

Benefits of transformer coupling

The pulse transformers used in CopperheadTM transceivers provide high isolation and

optimum damping of transients. They also eliminate DC components in the signal and provide

common mode signal rejection. The transformer is also used to perform impedance matching of

the load to the source to provide maximum power transfer, and also to prevent reflections from

transmission line effects.

(Figure 1) Actual oscilloscope tracing of 311 Mb/s
unequalized input to receiver pins 13 and 14 after
transmission over 200 meters of RG-6/u coaxial
cable.

(Figure 2) Tracing of the same signal after
equalization. Receiver output measured at pins
2 and 3.

BEFORE

(unequalized)

AFTER

(equalized for CMI)

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CMI Converter -- 2

TC155/311 function diagram

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CMI Converter -- 3

Rx BNC
(CMI
data)

transformer

20 dB
monitor

ESD
protection

signal
detect

amplifier
and buffer

equalizer
and filter

lock
detector

phase/frequency
discriminator

line
driver

CMI decoder

buffer

clock recovery

clock
recovery

phase/frequency
discriminator

buffer
and
filter

CMI
encoder

filter and ESD
protection

transformer

Tx BNC
(CMI data)

NRZ data

fiber transceiver

NRZ data

General Electrical Parameters

Table 1

Absolute Maximum Ratings

Connections

Converter & data link LEDs

PARAM ET ER

SYM

MIN

MAX

UNIT

Storage te mperature

-40

+75

�C

Operating temperature ambient, active

+40

�C

Pow er supply voltage (regulator)

10.8

13.2

Pow er supply current

1.0

Pow er dissipation (total)

13.2

Weight

pounds

Size: 6.50"L x 4.60"W x 1.50" H

inches

Size: 165 x 117 x 38 mm

millimeters

Table 2

Note 1: Measured @ 12 Vdc
Note 2: Coas transmitter meets ITU-T G.703 data masks

Note 1: Using RG-6/u coaxial cable.
Note: The numbers and parameters shown are derived from Recommendation G.703.

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CMI Converter -- 4

Fiber transceiver

SC connector provides link to cable; single mode and multi mode options are available

Copper co nnections

Tw o 75 ohm BNC

Power connector

2.0 m m male pow er jack on converter to mate w ith 2.1m m female pow er plug

Earth ground

In order to meet all EMC requirements, a 16 AW G or heavier (2 feet max) w ire must be
connected betw een earth ground of the converter and earth ground of the pow er source

Fiber

Indicates that data is present on the receiver

Copper

Indicates that data is present on the receiver

Power status

Indicates that pow er is connected to the pow er jack

PA RAMET ER

TC1 55/31 1 STM-1 O C-3

TC139/279 E4/STM-1 OC-3

U NIT

Data rate

155.52

139.264

MBaud/s

No minal bit rate

311.04

278.528

Mb/s

Tolerance

� 100

pp m

Operating distance ( min)
single mode fiber (long reach)

K meters

Operating distance ( min)

multimode fiber

K meters

Operating distance ( min)

100 + 20dB

meters

Cable i mpedance

oh ms (nom)

Part Number Example:

TC 155/311 S P (USA)

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CMI Converter -- 6

Ordering Information

(USA) --------- Country Plug Identification (configuration and voltage)

P ---------- Power supply (external) provided

S ---------- Single Mode Fiber Transceiver
M ---------- Multi Mode Fiber Transceiver

155/311 ------- Baud/data rate
139/279 ------- Baud/data rate

TC ------- Identifies Technitrol Converter

Related Products

Series

Features

T M311DVA

311.04 Mb version SON ET ST M1 (also SO NET E4 278.528 Mb) CMI

T M311TRFVA

311.04 Mb version SON ET ST M1 (also SO NET E4 278.528 Mb) CMI w ith G.775 LOS

T M622 Series

622.08 Mbaud version SO NET OC-12, STM-4

T-330SC T

330 Mbaud "H OT LINK" / 265.625 Mbaud version 1/4 speed Fibre Channel Transfor mer

T-1062SCT

1.0625 Gbaud version full speed Fibre Channel Transfor mer

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CMI Converter -- 7

Declaration of EU Conformity

Harmo nized Stan dards

EN 55022: (1993)

Measurement of radio disturbance characteristics of infor mation technology equipment
CIS PR Class A.

EN50081-1:(1991)

Generic Emission Standard. Part 1: Residential - Standard for using products in domestic,
commercial and light-industrial environments.

EN50082-1:(1991)

Generic Immunity Standard. Part 1: Residential - General i mmunity standard for using products
in domestic, commercial and light-industrial environ ments.

Test Standards

IEC 801.3

EMC Radiated Immunity

IEC 1000-4-2

IEC 801.2

ESD Test Method

IEC 1000-4-4

IEC 801.4

EFT Test Method

EN50082-1

Perfor mance Criteria A

EN50082-1

Perfor mance Criteria B, Level 2

EN50082-1

Perfor mance Criteria B, Level 3 (at I/O Port)

Safety

IEC 950: (1991);
A mend ment 1:(1992);
A mend ment 2:(1993)

Safety of Infor mation Technology Equipment

Application of Council Directive: 89/336/EEC
Standards to which conformity is declared are as follows:

Manufacturer's Name:

Pulse Specialty Components
A Technitrol Company
Two Pearl Buck Court
Bristol, PA 19007-6812 USA

CE Mark Test Reports on File in Europe:

Pulse
Dunmore Road
Tuam10
Co. Galway, Ireland

Type of Equipment:

Information Technology Equipment

Equipment Class:

Commercial & Light Industrial

Model:

C155/311 Converter

Year of Manufacture:

1996,1997

Technical File Number: TP 10327

Pulse Specialty Components hereby declares that the equipment specified above conforms to the above
Directive(s) and Standard(s). This Declaration is the sole responsibility of Pulse Specialty Components.

1) Buyer promptly notifies Pulse Specialty Components in

writing within the warranty period, and

2) The defective product or part is returned to Pulse Specialty

Components with transportation charges prepaid by Buyer,
and

3) Pulse Specialty Components examination of such product

shall disclose to its satisfaction that said defect exists and
has not been caused by misuse, neglect, improper installa
tion, repair or alteration, or accident.

EXCEPT FOR THE ABOVE WARRANTY AND THE IMPLIED WARRANTY OF TITLE,

PULSE SPECIALTY COMPONENTS MAKES NO OTHER WARRANTIES, EXPRESS

OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR

FITNESS FOR ANY PARTICULAR PURPOSE. NO LIABILITY IS ASSUMED FOR

EXPENDABLE ITEMS SUCH AS LAMPS AND FUSES. PULSE SPECIALTY COMPO-

NENTS WILL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES

UNDER ANY CIRCUMSTANCES.

WARRANTY

Pulse Specialty Components warrants for a period of 90 days from the date
of shipment, that under normal use and service, its products will be free from
defects in workmanship and material. Pulse Specialty Components' sole
responsibility under this warranty is, at its option, to repair or replace, with-
out charge, any defective product or part, or to credit buyer for the purchase
price of such defective product, provided:

Catalog #CONV-0200

Issue Date 4/10/00

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Электронный компонент: TC139/279SP