Tektronix ORS20 Instruction Manual Instruction Manual

Instruction Manual

ORS20
Optical Receiver System

071-0423-00

Copyright © T ektronix, Inc. All rights reserved.
T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes

that in all previously published material. Specifications and price change privileges reserved.
Printed in the U.S.A.
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX, TEK, and TEKPROBE are registered trademarks of T ektronix, Inc.

WARRANTY

T ektronix warrants that the products that it manufactures and sells will be free from defects in materials and
workmanship for a period of one (1) year from the date of shipment. If a product proves defective during this
warranty period, T ektronix, at its option, either will repair the defective product without charge for parts and labor,
or will provide a replacement in exchange for the defective product.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration
of the warranty period and make suitable arrangements for the performance of service. Customer shall be
responsible for packaging and shipping the defective product to the service center designated by T ektronix, with
shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a
location within the country in which the T ektronix service center is located. Customer shall be responsible for
paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage
resulting from attempts by personnel other than T ektronix representatives to install, repair or service the product;
b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any
damage or malfunction caused by the use of non-T ektronix supplies; or d) to service a product that has been
modified or integrated with other products when the effect of such modification or integration increases the time
or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS
OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUST OMER FOR BREACH OF THIS WARRANTY.
TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT , SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR
THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

Table of Contents

General Safety Summary iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contacting Tektronix v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Getting Started 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standard Accessories 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optional Accessories 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Basics 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handling 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning Optical Connectors 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting Signals 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Attenuating Optical Signals 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TEKPROBE Adapter 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Equipment Required 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setup For PV 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output Zero 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC Conversion Gain 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Noise Equivalent Power 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bandwidth/Frequency Response (Using OIG501/502) 22. . . . . . . . . . . . . . . . . . . .

Bandwidth/Frequency Response (Using Calmar FPL-01)) 24. . . . . . . . . . . . . . . . .

Fuse Removal and Replacement 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replaceable Parts 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ORS20 Instruction Manual

i

Table of Contents

List of Figures

Figure 1: ORS20 Front Panel 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2: TEKPROBE adapter setup 8. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3: Typical ORS20 responsivity 11. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4: OC48 2488 Mb/s typical frequency response curve 12. . . . . . .

Figure 5: GBE 1250 Mb/s typical frequency response curve 12. . . . . . .

Figure 6: FC 1063 Mb/s typical frequency response curve 13. . . . . . . . .

Figure 7: TTL remote control connector pin assignment 13. . . . . . . . . .

Figure 8: Setup for frequency response measurement

using OIG501/502 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 9: Setup for frequency response measurement

using Calmar FPL-01 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 10: Removing the top cover 30. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 11: Replacing the fuse 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 12: Replaceable parts 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 13: Standard accessories 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 14: Optional accessories 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 15: Optional power cords 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ii

ORS20 Instruction Manual

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.

Only qualified personnel should perform service procedures.

To Avoid Fire or
Personal Injury

Symbols and Terms

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings

and markings on the product. Consult the product manual for further ratings
information before making connections to the product.

Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.

Wear Eye Protection. Wear eye protection if exposure to high-intensity rays or
laser radiation exists.

Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.

Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry .

T erms in this Manual. These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.

ORS20 Instruction Manual

CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.

T erms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the

marking.
WARNING indicates an injury hazard not immediately accessible as you read the

marking.
CAUTION indicates a hazard to property including the product.

iii

General Safety Summary

Symbols on the Product. The following symbols appear on the product:

CAUTION

Static Sensitive

CAUTION

Refer to Manual

iv

ORS20 Instruction Manual

Contacting Tektronix

Product

Support

Service

Support

For other

information

To write us Tektronix, Inc.

For application-oriented questions about a Tektronix measure­ment product, call toll free in North America:
1-800-TEK-WIDE (1-800-835-9433 ext. 2400)
6:00 a.m. – 5:00 p.m. Pacific time

Or contact us by e-mail:
[e-mail]

For product support outside of North America, contact your
local Tektronix distributor or sales office.

Contact your local Tektronix distributor or sales office. Or visit
our web site for a listing of worldwide service locations.

http://www.tek.com
In North America:

1-800-TEK-WIDE (1-800-835-9433)
An operator will direct your call.

P.O. Box 1000
Wilsonville, OR 97070-1000

ORS20 Instruction Manual

v

Preface

vi

ORS20 Instruction Manual

Getting Started

The ORS20 is an optical receiver system that is precisely calibrated to have a
controlled frequency response for consistently analyzing time domain optical
signals at Fiber Channel (1063 Mb/s), Gigabit Ethernet (1250 Mb/s), or
SONET/SDH OC-48/STM-16 (2.488 Gb/s). Along with the appropriate
sampling head, the ORS20 reference receiver can test the compliance of optical
signals to these data rates.

Figure 1 shows the front panel of the ORS20 Optical Receiver System.

ORS 20 Optical Receiver System

Figure 1: ORS20 Front Panel

The ORS20 Optical Receiver System has an SC/PC (standard) or FC/PC
receptacle (option 01) for optical signal input and a precision 3.5 mm SMA
connector for electrical signal output.

The following list highlights the key performance characteristics of the ORS20
Optical Receiver System:

H 700 to 1650 nm wavelength response
H 2.3 GHz Minimum Optical Bandwidth
H Selectable to Fourth Order Bessel-Thompson, 1063 Mb/s, 1250 Mb/s, and

2.488 Gb/s frequency responses

H Conversion gain ≥ 0.4 V/mW at 850 nm, ≥ 0.6 V/mW at 1310 nm
For a complete list of specifications, see page 9.

ORS20 Instruction Manual

1

Getting Started

Standard Accessories

Options

The following accessories are standard with every ORS20 Optical Receiver
System:

H User Manual/Instructions 071-0423-XX
H US power cord 161-0066-00
H 50 W, flexible coaxial jumper, male SMA-to-SMA connector 015-0560-00
H FC 1063 MHz Reference Receiver frequency response graph
H GBE 1250 MHz Reference Receiver frequency response graph
H Certificate of traceable calibration

For a list of replaceable part numbers, see page 32.

The following options are available at the time of purchase:

H Opt 01 FC-PC front panel connector
H Opt FR 2.488 Gb/s OC48 Reference Receiver

frequency response graph

H Opt D1 Calibration data
H Opt C3 Three years calibration services
H Opt D3 Three years calibration data (requires option C3)
H Opt R3 Three years extended warranty

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ORS20 Instruction Manual

Optional Accessories

Getting Started

The following recommended accessories are available through Tektronix:
H Fiber-optic cables and adapters with a variety of fiber types and connector

styles

H SONET/SDH 155 Mb/s filter 119-5936-00
H SDH 622 Mb/s filter 119-5929-00
H TEKPROBE Interface Adapter Kit
H 90/10 single-mode optical splitter with FC/PC connectors
H 10 dB in-line single-mode optical attenuator
H Power Plug Options A1, A2, A3, A4, A5
H TVG F11A Single rackmount kit
H TVG F13 Dual rackmount kit
H TVG F14 Dual half-rack rackmount kit

For a list of part numbers, see page 32.

ORS20 Instruction Manual

3

Getting Started

Installation

CAUTION. The output of the Optical Receiver System and the input of the
sampling head are subject to damage from electrostatic discharge (ESD). To
prevent damage from ESD, take the following precautions:

Always wear an anti-static wrist strap when handling a static sensitive
instrument.

Keep the 50 W termination in place when moving or storing the instrument.
Remove the termination only to connect a cable.

Discharge the inner conductor of a loose, unterminated cable before connecting
it to the instrument.

NOTE. To guarantee compliance with FC, GBE, or OC-48 boundary limits, you
must connect the ORS20 Optical Receiver System to the input of an SD-22
sampling head using the 015-0560-00 cable provided. The ORS20 Optical
Receiver System is designed for the electrical characteristics of the cable and the
particular frequency response and low noise of the SD-22. Test temperatures
must be 20 to 35°C.

Use the following procedure to connect the Optical Receiver System to a
Tektronix 11801/CSA803 sampling oscilloscope:

1. Switch off the instruments.

2. Follow anti-static precautions and connect the output of the Optical Receiver

System to the input of the SD-22 sampling head with the 015-0560-00 cable

provided:

a. Align the SMA connectors carefully.

b. Use light, finger pressure to turn the nut. Do not turn the cable.

c. Tighten the nut lightly with a wrench. For best repeatability and to

prolong the life of SMA connectors, use a torque wrench and tighten
the connection to the range of 7 to 10 lb-in (79 to 112 N-cm).

3. Connect an optical source, such as a Tektronix OIG 501/502 Optical Impulse

Generator or CTS 710/750 SONET Test Set, with an input cable to the

optical input on the ORS20 Optical Receiver System.

4. Switch on the instruments.

4

ORS20 Instruction Manual