Tektronix OM1106, OM4006, OM4106 User manual

OM1106, OM4006, OM4106

ZZZ

Coherent Lightwave Signal Analyzer

User Guide

*P071316000*

071-3160-00

OM1106, OM4006, OM4106

ZZZ

Coherent Lightwave Signal Analyzer

User Guide

www.tektronix.com

071-3160-00

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions.

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P.O. B o x 5 0 0 Beaverto USA

For product information, sales, service, and technical support:

n, OR 97077

In North America, call 1-800-833-9200. Worl dwid e, vis it www.tektronix.com to ﬁnd contacts in your area.

Warranty

Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, 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. Parts, modules and replacement products used by Tektronix for warranty work may be n the property of Tektronix.

ew or reconditioned to like new performance. All replaced parts, modules and products become

In order to o 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 Tektronix, w ith 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 Tektronix 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. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage result 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-Tektronix 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 WITH RESPECT TO THE PRODUCT 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.

TRONIX' RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE

TEK AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER 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.

[W2 – 15AUG04]

btain service under this warranty, Customer must notify Tektronix of the defect before the expiration of

ing from attempts by personnel other than Tektronix representatives to install, repair or service the product;

1 SAFETY INFORMATION ...................................................................................................................... 7

1.1 SAFETY NOTICES ............................................................................................................................. 7

1.2 LASER SAFETY ................................................................................................................................. 7

1.3 OM4000 SERIES LASER LABELS AND LOCATIONS .............................................................................. 8

2 INTRODUCTION ................................................................................................................................... 9

2.1 PURPOSE ......................................................................................................................................... 9

3 GETTING STARTED ........................................................................................................................... 10

3.1 CONFIGURING THE HARDWARE ....................................................................................................... 10

3.2 OVERVIEW AND CONFIGURATION OF THE SOFTWARE ....................................................................... 19

4 MAKING MEASUREMENTS ............................................................................................................... 43

4.1 SETTING UP YOUR MEASUREMENT ................................................................................................. 43

4.2 ENGINE FILE ................................................................................................................................... 43

4.3 PERFORMING MEASUREMENTS ........................................................................................................ 44

5 USING THE OUI .................................................................................................................................. 46

5.1 OUI OVERVIEW .............................................................................................................................. 46

5.2 ANALYSIS PARAMETERS ................................................................................................................. 48

5.3 CONSTELLATION DIAGRAMS ............................................................................................................ 54

5.4 EYE DIAGRAMS .............................................................................................................................. 57

5.5 SIGNAL VS. TIME ............................................................................................................................. 58

5.6 WAVEFORM AVERAGING ................................................................................................................. 59

5.7 MEASUREMENTS ............................................................................................................................ 61

5.8 POINCARÉ SPHERE ........................................................................................................................ 62

5.9 BIT-ERROR-RATE REPORTING ........................................................................................................ 63

5.10 PMD MEASUREMENT ...................................................................................................................... 63

5.11 RECORDING AND PLAYBACK ........................................................................................................... 64

5.12 ALERTS ......................................................................................................................................... 65

5.13 MANAGING DATA SETS WITH RECORD LENGTH > 1,000,000 ............................................................ 67

6 LASER / RECEIVER CONTROL PANEL ............................................................................................ 70

6.1 DEVICE SETUP AND AUTO CONFIGURE ............................................................................................ 70

6.2 CONFIGURATION ON A NETWORK USING DHCP ................................................................................ 71

6.3 CONFIGURATION ON A NETWORK WITH NO DHCP ............................................................................ 72

6.4 CONNECTING TO YOUR OM4000 SERIES DEVICE ............................................................................. 75

6.5 SETTING LASER PARAMETERS ......................................................................................................... 77

7 ATE (AUTOMATED TEST EQUIPMENT) INTERFACE ..................................................................... 79

7.1 LRCP ATE INTERFACE .................................................................................................................. 79

7.2 OUI4006 ATE INTERFACE ............................................................................................................. 85

7.3 ATE FUNCTIONALITY IN MATLAB ................................................................................................... 91

7.4 BUILDING AN OM4006 ATE CLIENT IN VB.NET .............................................................................. 93

8 MAINTENANCE AND CLEANING .................................................................................................... 102

9 DETAILED CONFIGURATION OF EXPERIMENTS ......................................................................... 103

10 CORE PROCESSING SOFTWARE GUIDE ................................................................................. 105

10.1 INTERACTION WITH OUI ................................................................................................................ 105

10.2 MATLAB VARIABLES ...................................................................................................................... 106

10.3 MATLAB FUNCTIONS ..................................................................................................................... 107

10.4 SIGNAL PROCESSING STEPS IN COREPROCESSING ........................................................................ 107

10.5 BLOCK PROCESSING ..................................................................................................................... 113

10.6 ALERTS MANAGEMENT .................................................................................................................. 114

11 CORE PROCESSING FUNCTION REFERENCE ........................................................................ 116

11.1 ALIGNTRIBS ................................................................................................................................. 116

11.2 APPLYPHASE ............................................................................................................................... 119

11.3 CLOCKRETIME ............................................................................................................................. 120

11.4 DIFFDETECTION ........................................................................................................................... 121

11.5 ESTIMATECLOCK .......................................................................................................................... 123

11.6 ESTIMATEPHASE .......................................................................................................................... 125

11.7 ESTIMATESOP ............................................................................................................................. 127

11.8 MASKCOUNT ................................................................................................................................ 128

11.9 GENPATTERN .............................................................................................................................. 129

11.10 JONES2STOKES ....................................................................................................................... 130

11.11 JONESORTH ............................................................................................................................. 131

11.12 LASERSPECTRUM ..................................................................................................................... 132

11.13 QDECTH .................................................................................................................................. 133

11.14 ZSPECTRUM ............................................................................................................................. 135

12 MATLAB VARIABLES USED BY CORE PROCESSING .............................................................. 136

13 APPENDIX A – ADVANCED USE CASES ................................................................................... 137

13.1 CONFIGURING TWO 70000 SERIES OSCILLOSCOPES ...................................................................... 138

14 APPENDIX B: SOFTWARE LICENSE AGREEMENT .................................................................. 144

15 APPENDIX C – GLOSSARY OF TERMS ..................................................................................... 148

1 Safety Information

CAUTION

WARNING

CAUTION

1.1 Safety Notices

Indicates a potentially hazardous condition or procedure that could result in damage to the instrument.

Indicates a potentially hazardous condition or procedure that could result in minor or moderate bodily injury.

Indicates a potentially hazardous condition or procedure that could result in serious injury or death.

This symbol on the unit indicates that the user should consult this document for further information regarding the nature of the potential hazard and actions that should be

taken to avoid or mitigate the hazard.

1.2 Laser Safety

The laser sources included in this product are classified according to IEC/EN 60825-1: 1994+A1:2001+A2:2001 and IEC/EN 60825-2:2004 This laser product complies with 21CFR1040.10 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007.

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Under no circumstances should you use any optical instruments to view the laser output directly.

Additional laser safety notifications appear in the OM4000 Series User Interface (OUI) control software section.

1.3 OM4000 Series Laser Labels and Locations

INVISIBLE LASER RADIATION; DO NOT VIEW DIRECTLY WITH

OPTICAL INSTRUMENTS: CLASS 1M LASER PRODUCT EMISSION DE RAYONS LASER INVISIBLES DE CLASSE 1M. NE PAS OBSERVER A L’AIDE D’INSTRUMENTS OPTIQUES

Indicates the location of a laser aperture

Model

MAC Address

Under top Cover:

Serial Number Manufactured

2 Introduction

2.1 Purpose

The OM4000 Series Coherent Lightwave Signal Analyzer is a sophisticated, general-purpose long-haul (C and L-band capable) fiber optics communications receiver that measures the complete electric field (vs. time) in single-mode optical fiber. The system consists of the Complex Modulation Receiver, Core Processing, and the OM4000 Series User Interface (OUI), further incorporating a customer-supplied real-time 2- or 4-channel oscilloscope and external computer, with the option for some oscilloscopes to run the OUI on the oscilloscope itself.

The Coherent Lightwave Signal Analyzer runs a Matlab1-based script, CoreProcessing, to recover the phase of the complex-modulated lightwave signal and display the demodulated result in several useful formats, such as eye diagrams of the tributaries, phase diagrams (constellations) and the Poincaré sphere. This method offers access to the entire variable space in Matlab, enabling you to change the order of processing, define new functions, and interact with other programs, such as LabVIEW2.

MATLAB® is a registered trademark of The MathWorks, Inc. Other product and company names listed are

trademarks and trade names of their respective companies.

LabVIEW is a trademark of National Instruments, Inc.

3 Getting Started

3.1 Configuring the Hardware

3.1.1 OM4000 Series Receiver

Ensure that the required power sources for the OM4000 Series (100, 115 or 230 VAC, 50–60 Hz, 0.4 A), the associated oscilloscope, and the external computer (if used) are available.

The OM4000 Series Coherent Modulation Receiver, along with proprietary software comprises the OM4000 Series Coherent Lightwave Signal Analyzer (CLSA). This system is used in laboratory or industrial facilities to analyze next-generation complex-modulation fiber-optic data signals. In operation, one of the receiver’s two laser outputs will be connected to one of the optical input connectors (the reference, or local oscillator, input), and the second laser output will be connected to the user’s device under test.

Note: The reference connection may optionally be configured internally at the factory.

The signal to be analyzed is connected to the “Signal” optical input. Four coaxial cables connect the OM4000 Series to a high-speed sampling oscilloscope. An Ethernet connector will connect the receiver, via a router, to a computer and to the oscilloscope. An IEC power cord is connected to a rack or wall outlet. The OM4000 Series User Interface running on the computer controls the OM4000 Series and the oscilloscope.

Note: A password is required to turn on the lasers through the Laser / Receiver Control Panel.

The default is ‘1234’

Associated cabling includes the power cord, an Ethernet cable, four coaxial cables (9 to 12 inches in length), and two fiber optic cables to connect the laser output and user’s signal to the optical inputs.

3.1.2 OM4000 Series Controls and I/O Connections

Front Panel Controls and I/O Connectors

1. On/Off switch

2. Laser 1 Output (with LED indicator)

3. Laser 2 Output (with LED indicator) (may be internally connected at the factory)

4. Input 1 (Signal input)

5. Input 2 (Reference input; may be internally connected at the factory)

6. RF connectors, to connect to the oscilloscope

Rear Panel Controls and I/O Connectors

7. BNC connector for optional laser remote interlock

8. Ethernet port

9. Fuse drawer

10. Input power receptacle

Computer –

PC or laptop

4-channel

Coaxial cables (4), Fiber optic

Power cord

Ethernet

OM4000

Laser outputs (2)

Optical inputs (2)

IN1

IN2

To user’s

DUT

Gigabit Switch

1 2 3 4

XI XQ YI YQ

patch cable

oscilloscope

6 -12 in. long typ.

Block diagram

3.1.3 List of Components

OM4000 Series Complex Modulation Receiver

 IEC power cable  Ethernet cable  BNC shorting cap for interlock  (4) Dust covers for optical inputs not in use  (4) SMA caps to protect electrical outputs  Short PM patch cable to connect Laser 2 to Reference input  Short coaxial cables shaped to connect OM4000 Series outputs to oscilloscope inputs

Additional items needed, not part of Receiver:  Supported Oscilloscope (1 of the following)

o Real-time Tektronix Oscilloscope with at least 20 GS/s sampling rate on two or four

channels in the 70000 Series

o Equivalent-Time Tektronix Oscilloscope DSA8300 or DSA8200 with supported

sampling heads. See data sheet for supported samplers

 Power cable

WARNING

CAUTION

 Ethernet cable  Mouse and keyboard (unless touch-screen controlled)  System controller PC running Windows 7 or XP, Matlab, the OM4000 Series User

Interface (OUI) software, and the Laser Receiver Control Panel (LRCP) software.

o Monitor plus cable o Mouse and keyboard o Power cables o Ethernet cable

 An Ethernet switch or hub plus a router running DHCP, and associated cabling (not shown)  Equipment for calibration as needed (see Calibration section)  OMRACK, 19” rack, or other method of ensuring OM4000 Series and oscilloscope are

securely stacked

To avoid the possibility of electrical shock, do not connect your OM4000 to a power source if there are any signs of damage to the instrument enclosure.

3.1.4 Electrical Power Requirements

The OM4000 Series can operate from any AC power source that provides 100, 115, or 230 VAC, at a frequency of 60 Hz or 50 Hz respectively with a 0.4A rating. (The US rack-mount system has a power connector that requires the special 20 A outlet configuration.) The OM4000 Series must be connected directly to a grounded power outlet only.

The OM4000 Series must be connected to a 100, 115, or 230VAC at 60Hz or 50Hz respectively grounded outlet only. Operating the OM4000 Series without connection to a grounded power source could result in serious electrical shock. Always connect the unit directly to a grounded power outlet.

Protective features of the OM4000 Series may be impaired if the unit is used in a manner not specified by Tektronix.

3.1.5 Location and Positioning

CAUTION

If the OM4000 Series is to be used in an installation other than a standard 19” rack, be sure to position the unit so that the power switch at the rear of the unit can be easily accessed.

Be sure not to obstruct the fan so that there is an adequate flow of cooling air to the electronics compartment whenever the unit is operating.

3.1.6 Operating Environment

The OM4000 Series may be operated within the following conditions: Temperature 10°C to +35°C (50°F to +95°F) Humidity <85% R.H. non-condensing from 10°C to +35°C (50°F to +95°F) Altitude < 2,000 m (6560ft)

3.1.7 Computer

Install software on target computer and Oscilloscope. See Installation Instructions Mathworks MATLAB is required but not included in the install package.

Windows 7 64-bit Operating System: Install Matlab 2011b Windows XP 32-bit Operating System: Install Matlab 2009a 32-bit

Recommended and Minimum Computer Requirements:

Operating System: US Windows-7 64 bit OR US Windows XP Service Pack 3 32-bit (.NET 4.0

required),

Processor: recommended: Intel I7, i5 or equivalent; min clock speed 2 GHz; minimum:

Intel Pentium 4 or equivalent,

RAM: min: 4 GB, For 64-bit releases will benefit from as much memory as is

available Hard Drive Space: At least 300 GB recommended for large data sets; minimum: 20 GB, Video Card: nVidia dedicated graphics board w/ 512+ MB min. graphics memory

Note: Color grade display feature is not available on non-nVidia graphics

cards and so will not be available when running native on an oscilloscope Networking: Gigabit Ethernet (1 Gb/s) or Fast Ethernet (100Mb/s) Display: 20” min, Large flat screen recommended for displaying multiple graph types

Other Hardware: DVD Optical drive, 2 USB 2.0 ports Other Software: Computer must have Matlab installed according to instructions above.

Adobe PDF Reader is required for viewing the User Guide and Installation

instructions.

3.1.8 First Setup

Real time oscilloscope

RF interconnects

Signal-Laser Fiber Optic

System controller can be Win 7

Input signal SM APC (from DUT)

System controller monitor or

Once everything is securely placed, make electrical connections in the following order:

1. Ethernet connections and other computer connections. See Section 3.1.2

2. Power connections from the OM4000 Series to the rack

3. Power from rack to mains (keeping main front panel switch off)

4. RF connections (the four coaxial cables from OM4000 Series to oscilloscope)

5. Fiber optic PM patch cable connection from Laser 2 to Reference (if needed)

6. Fiber optic Signal input connection (with no optical power present at setup)

7. Store all dust covers and coaxial connector caps for future use.

second monitor for Win 7 oscilloscope

PM APC output (if needed) for DUT

oscilloscope or separate PC. Separate PC required for certain display options.

Typical system configuration

Once the equipment is positioned and connected, turn on the computer, the oscilloscope and the main power switch on the back of the OM4000 Series. The OM4000 Series front-panel power button will light briefly after main power is applied indicating it is searching for a DHCP server. When an IP address has been assigned or when the search fails in the case of an isolated network, the power light will go off. Press the power button one time to enable the unit. The steady power button light indicates the OM4000 Series is ready for use and that lasers may be activated at any time if a user connects via the Ethernet connection. The light will go out and the unit will be disabled any time ac power is removed or the IP address is changed. Press the power button to re-enable. This feature prevents a remote user from activating the lasers when the local user may not be ready.

Note: Ethernet only allows devices on the same subnet to communicate.

You should now have three devices on an Ethernet network: computer, oscilloscope, and OM4000 Series. This little network may be connected to your corporate network or router or you may choose to leave it isolated. IP setup is normally done by at the time of installation. You should only need the following instructions if you are reconfiguring your network.

3.1.8.1 IP setup on a network with DHCP (dynamic IP assignment)

DHCP allows “automatic” assignment of the IP address the connected devices need to communicate with each other. However, automatic IP assignment must be selected on each device before this will be allowed. The OM4000 Series is shipped with automatic IP assignment enabled. Your computer and oscilloscope may need this turned on.

Once automatic IP assignment is selected, you may still need the cooperation of your corporate IT department to get IP addresses assigned. If you are using a centralized server, ask your network administrator to make an IP reservation for you so that you get the same number each time the device is powered on. Once these are set up for the oscilloscope and the OM4000 Series you will have no trouble finding them in the future.

Once your equipment gets an IP address from DHCP you can find that address using the operating system of the oscilloscope or computer. For example, in the XP operating system there is a window that looks like the one below. Notice that when you select the active Ethernet connection the IP address shows up in the Details box in the lower-left corner of the window.

To configure the IP connection of the OM4000 Series receiver, please see Chapter 6 on using the Laser Receiver Control Panel (LRCP).

3.1.8.2 IP setup on an isolated network or one not running a DHCP server

When there is no DHCP server, the Ethernet connected devices don’t know what address to assign to themselves. In this case you must manually set the IP address. On a corporate network this means getting the IP addresses from your network administrator first and then setting each device. Your network administrator may need the MAC addresses of the computer, oscilloscope, and OM4000 Series. The MAC address for your OM4000 Series box is located on the rear panel label. On newer models the MAC address is printed on the real-panel label. See Section 6.3 for instructions to set the OM4000 Series IP address. If you have a network isolated from your corporate network you are free to use any IP numbering scheme. Tektronix recommends 172.17.200.XXX where XXX is any unique number between 0 and 255 (each device needs a unique number). There is nothing special about this scheme other than that it is the default for new OM4000 Series units. Use the operating systems of the oscilloscope and computer to set their IP addresses. The first three sets of numbers in the IP address need to be the same on the computer and the connected devices for them to communicate in most cases.

Note: For setup purposes, to ease communication between the LRCP and the controller com-

puter, be sure the controller computer (e.g. laptop) has only one Ethernet medium (e.g. wireless or wired) activated

3.2 Overview and Configuration of the Software

OM4000 Series

User Interface

(OUI)

Matlab

IVI/Visa OR

Scope Service

Oscilloscope

Laser/Receiver

Control Panel

(LRCP)

OM4000 Series

Hardware

The OM4000 Series Software includes the OM4000 Series User Interface (OUI) and the Laser/ Receiver Control Panel (LRCP). The LRCP controls the hardware and communicates with the OUI which is the primary user interface. The OUI collects data from the user, the LRCP, and the oscilloscope and communicates with the Matlab Engine to input data and collect finished calculations. The OUI can also communicate with customer applications via the Windows Communication Foundation (WCF) interface described in Chapter 7.

3.2.1 Summary of Plots and Measurements in the OUI

Description

Plot available with Real-time

Oscilloscope

Constellation Diagram for X or Y signal polarization with numerical readout bottom tabs. Right-click to see graphics options Symbol-center values are shown in blue Symbol errors are shown in red Right-click for other color options

3d Eye for X or Y signal polarization. This plot can be scaled and rotated to view on a 2d or 3d monitor. It shows the Constellation Diagram with a time axis modulo two bit periods.

3d Constellation for X or Y signal polarization. This plot can be scaled and rotated to view on a 2d or 3d monitor. It shows the Constellation Diagram with a time axis.

The coherent eye diagram for X or Y signal polarization shows the In-Phase or Quadrature components vs. time modulo two bit periods. The Q-factor results are provided in a tab below accessed by clicking on the arrows in the lower left corner.

Right-click on the coherent eye diagram to get options including transition and eye averaging. The transition average shown in red is an average of each logical transition. The calculation is enabled in the Analysis Parameters tab and is used for calculating transition measurements.

The Power Eye shows the computed power per polarization vs time modulo 2 bit periods. This is a calculation of the eye diagram typically obtained with a photodiode-input oscilloscope.

Most plots can be viewed in colorgrade by rightclicking on the plot.

Right-click on the X vs T plot to display field, averaged-field, and symbol quantities. Zoom in or out or scroll through the record. Error symbols are shown in red.

BER is shown by physical tributary and in total. Color changes on synch loss.

2d Poincare shows the position of the data

signal polarizations relative to the receiver’s H

(1, 2) and V (3, 4).

3d Poincare shows polarization of each symbolcenter value. Click and drag to rotate the sphere.

The Decision-Threshold Q-Factor is an ideal signal quality measurement based on measured BER values. The horizontal axis corresponds to the vertical axis on the corresponding coherent eye plot. Linear Q is on the left and BER on the right of the plot. Measured values are indicated by squares: blue for 1’s red for 0’s.

The frequency spectrum of the signal field is calculated using an FFT after polarization separation to obtain the spectrum of each signal polarization.

The laser phase noise spectrum is obtained by taking an FFT of the  where ϴ is the recovered laser phase vs. time.

The PMDPlot provides the results of the PMD Calculation

The Measurements Tab provides a convenient place to find almost all of the numerical outputs provided by the OUI with statistics on each value.

3.2.3 Configuring the OM4000 Series User Interface (OUI)

VISA

Non-VISA Scope Service Utility

Segmented readout for unlimited record size

YES

Ability to collect data from two networked oscilloscopes running the Scope Service

YES

Software required on oscilloscope

LAN Server

Scope Service Utility or ET Scope Service Utility

Real-time oscilloscope compatibility

Any real-time Tektronix oscilloscope supported by the IVI driver

C and D-model 70000 Series Oscilloscopes with v6.4 firmware

Equivalent-time oscilloscope compatibility

DSA8300 or 8200 with ET Scope Service Utility

Start the OUI with the icon on your desktop or in the Programs menu.

Note: Be sure that Matlab is available and properly licensed, since the OUI will attempt to

launch a Matlab Command Window, and will appear to stall if Matlab is not available.

Connecting to the oscilloscope upon OUI startup is done with the Connect button in the Scope Setup section of the Setup ribbon. Notice that there are two choices for making an oscilloscope connection: VISA and non-VISA. VISA is only necessary when working with older real-time oscilloscopes.

3.2.3.1 VISA Connections

The VISA address of the oscilloscope contains its IP address, which is retained from the previous session, so it should not normally need to be changed, unless the network or the oscilloscope has changed. The VISA address string should be TCPIP0::IPADDRESS::INSTR where IPADDRESS is replaced by the scope IP address, e.g. 172.17.200.138 in the example below.

Note: To quickly determine the oscilloscope’s IP address, open a command window (“DOS

box”) on the oscilloscope, and use the IPCONFIG /ALL command.

After clicking Connect, the drop down boxes will be populated for channel configuration. Choose the oscilloscope channel name which corresponds to each receiver output and Matlab variable name. These are:

Vblock(1) – X-polarization, In-Phase Vblock(2) – X-polarization, Quadrature Vblock(3) – Y-polarization, In-Phase Vblock(4) – Y-polarization, Quadrature

In the case below we disable two channels and set the other two to Channel 1 and Channel 3 since these can be active channels in 100Gs/s mode. The disabled channels must still have some sort of valid drop-down box choice. Do not leave the choice blank.

It is important to have the oscilloscope in single-acquisition mode (not Run mode). If you put the oscilloscope into Run mode to make some adjustment, please remember to press Single on the oscilloscope prior to connecting from the OUI.

3.2.3.2 Non-VISA Scope Service Connections

As mentioned above, the other choice for connecting to the oscilloscope and collecting data is the Scope Service Utility. The Scope Service Utility is a program that runs on each oscilloscope to be connected to the OUI.

Once the Utility is installed on the oscilloscope, please start the “Socket Server” and the

Oscilloscope Application before starting the Utility using the desktop icon .

The Scope Service has a small User Interface shown below.

Note: The Scope Service Utility runs on the target oscilloscope. Be sure to install the proper

version for either real-time or equivalent-time (ET) oscilloscopes. See installation guide.

It is best to have the oscilloscope in single-acquisition mode (not Run mode). The Scope Service takes data directly from the oscilloscope memory and serves it up over a WCF interface to the OUI.

When connecting from the OUI, you will see a check box for VISA. Do not check the box unless you require a VISA connection.

Note: Clicking Connect on the OUI Setup Tab brings up the Scope Connection Dialog box for

connecting to the Scope Service Utility

The green bar at the top indicates that the software is searching for oscilloscopes on the same subnet that are running the Scope Service Utility. As they are found they are added to the dropdown menu. If the OUI Scope Connection Dialog box reports 0 Scopes Found, you will have to type in the IP address manually. This happens when connecting over a VPN or when network policies

prevent the IP broadcast. When typing the address in manually, do not include “, ET” or “, RT” on the

end. Click connect. After connection, map the channels to the physical receiver channels and corresponding Matlab variables as shown. This means that data from the selected channel will be moved into the indicated Vblock variable. Vblock(1) is X-Inphase, Vblock(2) is X-Quadrature, Vblock(3) is YInphase, Vblock(4) is Y-Quadrature. The mapping you choose will depend on the cable connections made to the receiver.

+ 121 hidden pages

Tektronix OM1106, OM4006, OM4106 User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

1 Safety Information

2 Introduction

3 Getting Started