MULTILANE AT4025 User manual

AT4025 Digital Sampling Oscilloscope GUI User Manual
AT4025 GUI User Manual-rev1.4 (GB 20210405a)
April 2021
4-Lane Electrical Scope | High Sensitivity | Supports 400GAUI PAM4 Transmitter Qualification

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Notices
Copyright © MultiLane Inc. All rights reserved. Licensed
software products are owned by MultiLane Inc. or its
suppliers and are protected by United States copyright
laws and international treaty provisions.
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph (c)(1)(ii)
of the Rights in Technical Data and Computer Software
clause at DFARS 252.227-7013, or subparagraphs (c)(1)
and (2) of the Commercial Computer Software -- Restricted
Rights clause at FAR 52.227-19, as applicable.
MultiLane Inc. 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.
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.
While using this product, you may need to access other
parts of the system. Read the General Safety Summary in
other system manuals for warnings and cautions related to
operating the system.
To Avoid Fire or Personal Injury
Use Proper Power Cord. Only use the power cord specified
for this product and certified for the country of use.
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 apply a potential to any terminal, including the
common terminal that exceeds the maximum rating of that
terminal.
Do Not Operate Without Covers.
Do not operate this product with covers or panels removed.
Avoid Exposed Circuitry. Do not touch exposed
connections and components when power is present.
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
Caution statements identify conditions or
practices that could result in damage to this product or
other property.

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CONTENTS
CONTENTS........................................................................................................................ 3
INTRODUCTION ................................................................................................................ 4
API and SmarTest Documents...................................................................................................4
Product Software.....................................................................................................................5
Minimum PC Requirements ..........................................................................................................................5
Installation....................................................................................................................... 6
System Start-up .......................................................................................................................6
DSO GUI Overview...................................................................................................................7
DSO Configuration ...................................................................................................................9
Connection Configuration .............................................................................................................................9
External Clock Operation ..............................................................................................................................9
DSO Menu ............................................................................................................................. 10
File Menu ....................................................................................................................................................10
Panning .......................................................................................................................................................11
Copy, Save, Undo Zoom and Print a Graph.................................................................................................12
Operating Modes ........................................................................................................................................12
Eye Measurement Mode.............................................................................................................................13
Status Bar.............................................................................................................................. 14
Number of Samples.....................................................................................................................................14
Operation Status .........................................................................................................................................14
How to add multiple ML-DSO Channels/Disconnect/Reconfigure .............................................................14
Oscilloscope Measurements................................................................................................... 15
Markers.......................................................................................................................................................15
Measurements ............................................................................................................................................16
Multiple Measurements..............................................................................................................................22
Statistics ......................................................................................................................................................23
Filters .................................................................................................................................... 23
S Parameter Mode................................................................................................................. 26
Frequency Domain Mode ....................................................................................................... 31
How to Change IP Address and Update Firmware................................................................ 32

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INTRODUCTION
This is the user operation manual for the AT4025. It covers the installation of its software package
and explains how to operate the instrument for pattern generation and error detection; how to
control the clocking system, inputs/outputs and all the available measurements.
Acronym
Definition
BERT
Bit Error Rate Tester
API
Application Programming Interface
NRZ
Non-Return to Zero
GBd
Gigabaud
PLL
Phase-Locked Loop
PPG
Pulse Pattern Generator
GHz
Gigahertz
PRD
Product Requirements Document
I/O
Input/Output
R&D
Research & Development
HW, FW, SW
Hardware, Firmware, Software
GUI
Graphical User Interface
ATE
Automatic Test Equipment
HSIO
High-Speed I/O
API and SmarTest Documents
This manual supports the instrument AT4025 and it is compatible with the Advantest V93000
HSIO test head extender frame/twinning.
All APIs are available for Linux and tested under Smartest 7. For the list of APIs and how to
use them please refer to the “API” folder on the AT4025 webpage.
This manual does not explain how to operate the instrument using SmarTest environment.
Refer to Advantest’s website below for SmarTest document noting that it may change
without notice and also require login privileges provided through Advantest.
https://www.advantest.com/service-support/ic-test-systems/software-information-and-
download/v93000-software-information-and-download

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Product Software
The instrument includes the following software:
 AT4025 GUI.
Instrument GUI runs on Windows XP (32/64 bit), Windows 7,8 and 10.
NOTE. These applications require the Microsoft .NET Framework 3.5.
If the Microsoft.NET Framework 3.5 is needed, it can be downloaded through this link:
http://download.microsoft.com/download/2/0/e/20e90413-712f-438c-988e-
fdaa79a8ac3d/dotnetfx35.exe.
For more products updates, check the following webpage:
https://multilaneinc.com/products/at4025/
Minimum PC Requirements
The Windows PC properties for the AT4025 GUI application should meet the following
specifications:
 Windows 7 or greater
 Minimum 1 GB RAM
 1 Ethernet card to establish connection with the device
 USB connector
 Pentium 4 processor 2.0 GHz or greater
 .NET Framework 3.5 sp1
NOTE: It is recommended to connect the BERT via Ethernet to one PC only to prevent conflict from
multiple user commands.
NOTE: It is not recommended to hook up the instrument to a slow network or to connect to it
through WiFi

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Installation
This section address installation and bring-up of the instrument, addressing the following topics:
- System start-up
- Connection guide
System Start-up
To use the DSO under Windows XP, Windows 7 and Vista, it is important that the correct start-up
sequence is followed:
 Ensure Microsoft .NET Framework 4.0 is installed
 Install the DSO GUI software
 Connect the power cable to the AT4000L
 Change the IP of the DSO to fit in the network range (Appendix II)
 Communication through Ethernet port is required for data acquisition
 Connect the PC to the AT4000L through an Ethernet cable, no driver required
 Now the DSO is powered up, having the right IP, the Ethernet cable links the instrument to
the PC with the GUI correctly installed
 To open the GUI, double click on the software icon located in the Desktop directory
 In order to characterize the signals fielding the instrument, check the Data and Connection
configuration
NOTE: This release supports Ethernet connection for the software applications, and the USB port
is used only to configure the device IP Address (note that the IP should be in the same range of the
network)

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DSO GUI Overview
Figure 9: GUI
 Click the connect button at the top left of your screen
 The “Connect to DSO” window will pop up
 Click on the add button to add the virtual DSO
 The “DSO configuration” window opens
 If both software the DSO and simulator are hosted on the samecomputer, choose the
“Simulation” mode, then browse for the data file desired.

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 If one of the GUI instances is being run on a different PC, choose “Hardware” instead
of “Simulation” and enter the “IP” of the PC where the simulator isrunning
 Click on the refresh button in order to retrieve the simulator configuration, or
configure the DSO by filling the “DSO configuration” window for the relevant IP
address
NOTE: Any data file that has already been saved using the DSO software can be loaded.

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DSO Configuration
Connection Configuration
Change the configuration as needed:
 The default display name of the target DSO can be edited as preferred
 The IP of the DSO connected by writing it next to “IP” label
 Name the DSO by populating the “Name” label
 Click on the hardware radio button to use the instrument; fill in IP and Channel
External Clock Operation
Clock Input in normal mode ranges between 5 and 525 MHz:
 Choose the Normal Operation radio button to use the onboard timing generator.
 Enter the target line rate less Line Rate (Gbps) into the Gbit Rate field or choose a
Gbps value, example: 10.709, 10.625, 10.3125, 9.95328, 8.5, 6.25, 4.25 and 3.125
 Specify the number of packets; it can be 4, 8, 16, 32, 64, 128, 256 or 512
Each packet consists of 512 sample points per UI, which are duplicated when drawing the eye.
Eg: 256 packets correspond to 131072 points per pattern, and 262144 points per eye (131072
for each of the 2 UIs displayed in eye mode).
Figure 10. DSO Configuration
 Enter the percentage level of rising and falling times in the NRZ Thresholds field
 Enter the External Reference Clock Frequency in MHz or as a factor of the bit rate
 Clock rate can vary from 50 MHz to 525 MHz, with an amplitude range from 0.05 to
1.5 Vpp

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 Typically, this will be rate / 16, 64, or 80, but can be any other rate as well
 Enter the Pattern Length of the data feeding the DSO to capture the full pattern
Note: Incorrect pattern length would still display the eye capture, however full pattern
capture is required for certain features of the software such as Jitter Decomposition,
PTB and Filters.
E.G.: Pattern Length = 127 for PRBS-7, The Pattern length of PN(n) is (2^n) - 1.
 To get wander correction, check the box then choose between the 3 frequencies, 1024
or 2048 or 4096 Hz
 In order to retrieve the last configuration, enter the specified IP and then press the
refresh button
 In order to scale the measured results, to remove the effect of an attenuator
connected at the receiving end of the scope, enter the Attenuation value in dB. In
optical mode, the value is doubled when the attenuator is at 3 dB. In electrical mode
this is 6 dB.
 To capture more points for finer measurements, accumulate the number of points
from all the acquisitions by entering the total number of points to persist in the
accumulate field. This will set the number of points filling the entire eye diagram. For
both UI’s, half this number of points will be displayed in the pattern diagram.
Accumulation works in infinite persistence mode, and unless the points are cleared or
the connection is reset, all acquisitions will take part in the accumulated result with
equal amounts of points randomly selected from each acquisition.
DSO Menu
Figure 11: DSO menu bar
File Menu
Save: after clicking on this icon, a save window appears enabling to save configurations, data
and measurements files for each acquisition.
In the case of being connected to multiple DSOs, there are check boxes next to each DSO,
check the one related to the needed DSO and save preferences. Each checked DSO has a
separate folder. If the 3 options Conf, Data and Measurements are checked; in this folder 3
kinds of files will be found.
Conf: select to save the configuration file.