YIC Technologies EMScannerR User manual

EMScannerR
Getting Started and Setup Guide
V1.1 012021
Y.I.C. Technologies Ltd

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Disclaimer
Warranty
The material contained in this user manual is provided “as is” and is subject to being changed,
without notice, in future editions. Further to the maximum extent permitted by applicable law,
Y.I.C. Technologies disclaims all warranties, either expressed or implied, with regard to this
user manual and any information contained herein, including but not limited to the implied
warranties of merchantability and fitness for a particular purpose. Y.I.C. Technologies shall
not be liable for errors or for incidental or consequential damages in connection with the
furnishing, use, or performance of this document or any information contained herein. Should
Y.I.C. Technologies and the user have a separate written agreement with warranty terms
covering the material in this document that conflict with these terms, the warranty terms in the
separate agreement shall control.
Safety Notices
Caution
A CAUTION notice denotes a hazard. It calls attention to operating procedure, practice, or
the like that, if not correctly performed or adhered to, could result in damage to the product or
loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions
are fully understood and met.
Warning
A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice,
or the like that, if not correctly performed or adhered to, could result in personal injury or death.
Do not proceed beyond a WARNING notice until the indicated conditions are fully understood
and met.
Table of Contents
Support

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Components and Connection Overview
1. Box Content – EMScanner
1 Scanner board
EMScannerR
2 Adapter
The adapter controls the EMScanner
3 RF SMA to type N
coaxial cable
It is referred as the RF cable in this
manual. It connects the scanner to the
spectrum analyser and has a SMA
connector for the scanner and a N
connector for the spectrum analyzer 50
ohm input port. It transmits RF output of
the scanner to the spectrum analyser.
4 Micro-D control
cable
It connects the adapter to the scanner to
enable control of the EMSCAN’s patented
scanner’s switched probes and to power
the scanner.
5 USB Cable
It connects the PC (laptop or desktop) to
the adaptor. The USB Cable provided with
the system has ferrites on both ends of the
cable
6 SMB-BNC Trigger
Cable
It connects the adaptor to the spectrum
analyser
Required Components (Supplied by user)
1. Spectrum Analyzer: It must include the necessary options to work with the EMScanner
(see Supported Spectrum Analysers). It measures the radio frequency (RF) signal
received from the scanner, generated by the very-near-field emissions of an adjacent
activated PCB and it outputs the data to the PC.
2. PC (Laptop / Desktop): It runs the EMScanner software and receives data, which it can
display and manipulate immediately or store for future data presentation. It must
support a LAN connection to a network or to the EMScanner.

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Installation and Hardware Setup
1. Install latest version of Keysight IO
Go to www.keysight.com and search for “IO Libraries Suite” or click here
to open the website to download the latest version. On the website click
on the Download button and follow the steps.
2. Install the software application
Install the EMViewer software by clicking on the Setup application icon.
The application should be installed on the C: drive.
EMViewer can be downloaded from the Products tab at
www.yictechnologies.com
3. Setup
Connect the PC, scanner and spectrum analyser as per the diagram below.
If the spectrum analyser has multiple trigger ports, always connect to Trigger 1 IN.
Connection Diagram:
USB LAN/USB
Micro-D control cable RF SMA to type N coaxial cable
Spectrum Analyzer
Adapter
SMB-BNC Trigger Cable

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Connections:
 RF Connection: Connect the SMA side of the cable to the unit RF OUT and the N
Type side to the Spectrum Analyzer RF Input.
 Trigger Connection: Connect the SMB connector to the Trigger output and the
BNC connector to the external trigger port on the rear panel of the spectrum
analyser.
 USB Connection: Connect the unit to a PC using the USB cable.
Spectrum Analyser RF
and Trigger Output

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Establish A Connection
1. Install latest version of IO Libraries Suite from Keysight website: www.keysight.com
2. Install the EMViewer software, the EMViewer can be found at
www.yictechnologies.com
Install the EMViewer software by clicking on the Setup application icon. The
application should always be installed on the C: drive.
Note: vc_redist.x86 is a USB driver needed to establish connection with the
EMScanneR. In some cases, the driver will not be installed automatically. In this
case, it will need to be installed manually. A copy of the USB driver will be in:
…\Program Files (x86)\YIC Technologies\EMViewer\Adapter USB Driver
Right click on EMViewer.inf - > Install.
3. Connect PC, scanner, adapter and spectrum analyzer as per the diagram below. If
you are using Ethernet between the PC and the spectrum analyzer, use a crossover
Ethernet cable.
If the spectrum analyzer has multiple trigger ports, always connect to Trigger 1 IN.
Note the Spectrum Analyzer MUST be visible on Keysight IO Libraries Suites “Connection
Expert”. Refers to Keysight Connection Expert help and support.
LED
LED light shows three stages:
 Red: Boot mode (this stage is fast; you may not even notice it)
 Orange: Initiation mode (checking firmware)
 Green: User mode (connected to the EMViewer and ready)

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Performing a Scan
There are three scan types:
 Spectral/Spatial Scan: measures the magnetic field strength of radiated
electromagnetic emissions from an object as a function of both frequency and position
on the PCB. It collects a series of Spatial Scans over the entire frequency range of
interest as opposed to a Spatial Scan (which gathers data at single frequency) or a
Spectral Scan (which saves only the composite maximum data set over the scan area).
 Spectral Scan: measures and displays the maximum amplitude vs. frequency of the
magnetic field strength over the scanned area.

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 Spatial Scan: measures the magnetic field of radiated electromagnetic emissions from
the DUT at a single frequency as a function of position. It can be a single scan or
interleaved scan.
Interleaved Scan is meant to overcome the limitations of the probe polarizations. By
measuring a DUT twice with a small physical shift between the two scans this blind
spot can be eliminated.
Menu Bar
Menu Bar is shown below. It allows to start a project node, to select a scan type, to start a
single scan, to scan continuously, and to stop a scan, as well as to specify scan settings.
Add Spectral/Spatial Scan Node
Click the Spectral/Spatial Scan button to setup a combined Spectral/Spatial scan.

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Add Spectral Scan Node
Click the Spectral Scan Node button to setup a Spectral only scan.
Add Spatial Scan Node
Click the Spatial Scan Node button to setup a Spatial only scan.
Node Setting
You can set and change the Scan parameters from the setting window:

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Scan Setting Tab
1. Center Frequency Supported range is 150KHz to 8GHz
2. RBW (Resolution Bandwidth): It is set by default at 122 kHz and can be reduced to the
lowest level allowed by the spectrum analyzer. Decreasing the bandwidth will increase
the sensitivity; the scan will however take more time to complete.
3. Interleaved Scan: This scan is meant to overcome the limitations of the probe
polarizations. By measuring a DUT twice with a small physical shift between the two
scans, blind spots can be eliminated.
4. Control Level: (For EMScannerR Only ) Select resolution level from 7.50 mm or Level
1 to 0.06 mm or Level 8.
Physical 7.50 mm With Interpolation
Effective 0.12 mm No Interpolation
5. Measure Peak: It activates the peak marking feature whereby peaks are rescanned at
a tighter bandwidth in order to accurately measure the frequency as long as the peak’s
value is 5 dB above the average noise floor of the scan. By default the maximum
number of peaks is set to 10. The maximum number peaks that can be measured is
30.

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6. Peak Hold: Also known as Max-Hold this is a very important feature as it allows you to
run a Spatial Scan continually replacing the peak amplitude at each location with each
successive higher measurement.
This is an excellent way to find the location of an intermittent signal at a single
frequency.
7. Reference Level: The maximum signal intensity that the spectrum analyzer can acquire
at a given frequency without clipping, this setting does not need to be changed except
when measuring very strong signals.
8. Spectrum Analyzer DC Coupled Mode: When this option is checked, the analyzer goes
from the protected AC mode to the unprotected DC mode. This enables a much lower
noise floor in the low frequency range, usually below 10 MHz, depending on the
spectrum analyzer. DC voltage applied to the spectrum analyzer input can however
cause damage to the internal circuitry.
Spatial Scan Setting Tab
1. Interleaved Scan: This mode will only work for the Spatial scan. It has no purpose
and is not functional for a Spectral Scan. This scan is meant to overcome the
limitations of the probe polarizations.
By measuring a DUT twice with a small physical shift between the two scans this
blind spot can be eliminated
2. Replace Data When Running Continuously: If you Scan Continuously when this
option is checked, EMxpert software replaces the previous scan data and keeps
the last scan data. In order to keep all scan data, uncheck this option.
3. Scan Data ID: Each spectral scan is indexed automatically and by selecting the ID
of a scan you get the Peak Marker List automatically populated with the marked
peaks.
4. Peak Marker List: This is the list of frequencies that were detected as being
possible peaks in the parent spectral scan. If the frequency was peak marked it will
show up in the list with an ‘—X’ after it. If it was a peak that was not peak marked
it will not have the ‘ –X’ after it but it will still show up in this list.

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Probes Selection Tab
Select and activate all of the probes under the DUT. You can activate the probes by either
left click on individual cells or left click and drag the mouse and choose Select Cells or click
Select All to activate all of the probes. Green indicates the activated probes.
You can deactivate the probes either left click on already selected cells or left click and drag
the mouse and choose Unselect Cells or click Select None to deactivate all of the probes.
When you mouse over the grid, row and column coordinates are displayed.
It is important to activate all of the probes under the DUT to have a complete view of the
emissions on the DUT at Level 1; once the specific source of emissions needs further analysis
at higher resolution only select the cells underneath the are of interest.
Using the wheel of the mouse will adjust the transparency of the JPG file to help set the probes.
Overlay Editor (How to Superimpose Graphical Image of a DUT)
Overlay Editor superimposes the graphical image of the device under test (DUT) onto
Spectral Scan Probes to guide you in activating the probes.
EMViewr software supports three file formats: JPG, HPGL and Gerber RS-274x.
Design files (HPGL and Gerber RS-274x) are imported at actual size. Once you import the
design file, you can rotate or mirror it, and/or drag it to a desired position. JPG needs to be
rotated and mirrored outside the EMViewr application to match the actual DUT size and
orientation; it can be resized inside the Overlay Editor.

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Adjust the size and location of the Overlay.
Running a Scan
To run the scan once click on the single green play button or click on the double play button
to run the scan continuously.
Once the scan is completed, an image of the scan will be displayed. You can mouse over the
graph to see coordinates, frequency and amplitude data. By sliding the Set Colour Threshold,
you can increase or decrease the contrast to more clearly identify current loops and peak
locations.
If you choose Scan Continuously the screen will refresh as fast as possible. You can click the
red stop sign in the icon bar or select Stop from the Controller Menu to stop the scan. You
must stop one scan before you run any successive scans.

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If Replace Data When Running Continuously in the Spatial Scan settings is selected the
EMViewer software replaces the previous scan data and keeps the last scan data. You will
only see the last scan data and display the spectral graph of this data.
In order to keep all scan data, uncheck Replace Data When Running Continuously in the
Spatial Scan settings. You can display spatial graphs of all the scan data. Simply click on the
scan and the graph will immediately update.

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Technical Support
To help us provide fast and seamless technical support, kindly gather the
following information and contact Technical Support as instructed further
below:
1. Serial number of your unit.
2. Software and firmware versions:
3. Windows OS information
4. Keysight IO version
5. Spectrum analyser model and firmware level
6. Information View data saved as a text file
7. Description of the problem including screen shots and videos
[e-mail]
www.yictechnologies.com
entaur House, Ancells Business Park, Ancells Road, Fleet, Hampshire, GU51 2UJ , UK