• Created by Meera Kathuria, last modified on Jul 29, 2019

Advanced Design System 2020 Release Notes

For general information about Advanced Design System (ADS), visit ADS webpage at http://www.keysight.com/find/eesof-ads.

Starting ADS 2020 release, the Linux system requirements have been updated: Support for Redhat 5.x has been discontinued. Updated the system libraries and rpm files. Following is the list of minimum patch versions required: Redhat 6.10 Redhat 7.2 Suse 12 SP2 Suse 11.4 Few ADS features will not work properly, in case you have installed lower patch versions than the above-recommended versions.   For more information, refer to Supported Platforms.

Contents

• Feature Updates
• Known Issues

Feature Updates

• Design and Technology Management
• Design Editing
• Circuit Simulation
• HSD Design
• EM Simulation

• Power Electronics

• PDK Validator

• Design Rule Checker (DRC)

• Design Kits

• Verification Test Bench (VTB)
• Examples
• Licensing
• Documentation

Design and Technology Management

• General

  • Improved Reference Searching and Display. "Explain" references describes and shows reference information to explain relationships in your libraries and designs.  See References and Dependents.

  • Improved Data file support in Library View and Copy Files.
• Data Display
  • Added Data Display Expression Manager to edit, find and/or replace equations and export measurement equations.
  • Find equation and trace dependents in Data Display. For more information, see Finding Dependent Equations.
  • Data Display Performance Improvements.
• Datalink (Python Interface) 
  
  • Datalink functions are available in measurement equations. For more information, see Adding Datalink Function in ADS.

Known Issues

  Back to Feature Updates

Design Editing

• Layout Constraints Database is a central location to define constraints on layout designs, such as trace widths, via start and stop layers, and routing clearances. The initial release of the layout constraints database implements two types of constraints: Clearance constraints and Via constraints. For more information, see Layout Constraints Database.

• Define and Insert PCB Vias and Pads using Padstack Templates.

Known Issues

  Back to Feature Updates

Circuit Simulation

• General

  • Loop Gain based stability analysis. For more information, see WSProbe (Winslow Stability Probe).
  • Support SystemVue 2018 update1.0 and latest 5GNR for modulated signals. For more information, see Verification Test Bench (VTB).
  • Direct EVM computations without dataflow simulator. For more information, see EVM computations.

  • Simulated annealing optimization supports discrete variables and has improved performance. For more information, see Simulated Annealing Optimizer. 
    

• Electrothermal

  • Using Design with Non-Synchronized Hierarchy. For more information, see Using Design with Non-Synchronized Hierarchy.
  • Electrothermal controller default values can be pre-configured using the eth.cfg file. For more information, see  Setting Defaults for ETH Controller . 
    Beta – ETH Circuit Envelope simulation allows the specification of an arbitrary synchronization time schedule (that is arbitrary time steps as a function of time) in contrast to the preceding uniform or logarithmic progressions.  
    For more details on use of arbitrary timestep, see Parameters in Simulator timestep Section.

• NXP SiMKit Models
  • The models have been updated to SiMKit Release, and these are now the default.
    For more information, including supported device versions, see Devices and Models, NXP SiMKit.

Known Issues

  Back to Feature Updates

HSD Design

• General

  • Queue Manager (QM) to manage test bench/benchs in ADS. For more information, see Queue Manager.

• SerDes

  • CTLE Visualizer. For more information, see CTLE Equalization Parameters.

    • Easier CTLE setup with provided presets for OIF CEI-28G. CEI-56G-VSR, IEEE 802.2bs CDAUI8, PCIe and USB Gen3.

    • Display frequency response, magnitude and phase.

    • Support user provided presets.

• • MIPI C-PHY Receiver enhancement with CTLE. For more information, see Rx_Cphy (MIPI C-PHY Receiver).

  • FlexDCA_Probe connection enhancement for remote H/W and remote PC. For more information, see FlexDCA Probe.

  • COM (Channel Operating Margin). For more information, see Support of Matlab runtime.

    • Linux Matlab runtime support.

    • COM 2.6 and Matlab R2018b support.

  • Smart Eye Probe: Multilane support with triggered eye diagram. For more information, see Smart Eye Probe.

• DDR/Memory
  • DDRSetup for Memory Designer
    • Improvements in setup SIPro simulations for DDR design
    • Improvements in use flow SIPro->Memory Designer

  • DDR Package components to specify packages that are not part of an IBIS file. For more information, see DDR Package.

• EM-SI/EM-PI 
  
  • Via Designer
    • multi-feed vias
    • micro vias and staggered vias
    • export to layout
    • export to EMPro
    • custom stitching via layers
  • Parallel simulation jobs for SIPro
    • local parallel simulations
    • parallel simulation jobs on cluster 

  • Component Model Maker

    • PCB Import generates a Model Map File

    • Model Map File generates Schematics and Symbols for user selected components

    • Model Map File can be edited to point to vendor libraries and custom models

  • PIPro DeCap Optimization with Lib Cell and SnP Components

  • PIPro Multi-Pin Splitting from 1 Sink to Multiple Sink Pin Pairs

  • PIPro Multi-Pin Accuracy Improvements

    • Equal Current and Equal Voltage now result in lower impedance with improved distribution of currents.

  • ADFI Export for Package Import into PIPro

    • Custom ADFI setting for exporting packages from Cadence SiP and MCM for use in SIPro/PIPro.

  • PIPro Improved multi-pin grouping and ungrouping for Current Mode and Voltage Mode AC EM Model solutions.

  • Faster rendering of large designs during rotate/pan/zoom. During these operations, reduced geometry detail is rendered to preserve an acceptable frame rate.

For more information, see SIPro and PIPro.

Known Issues

  Back to Feature Updates

 

EM Simulation

• RFPro

  • The User-Defined EM Extraction analysis allows to EM-simulate a combination of selected nets and components of a large design.
  • Simulate frequencies in parallel with FEM (on the local host or submitted to a cluster queue) and Momentum (only supported for jobs submitted to a cluster queue). Specify the number of parallel jobs in the Analysis → Options  → Resources tab.
  • LTD substrate files are available for selection when creating a new RFPro view.
  • Specify the layer purposes to be excluded or included when opening a layout in RFPro in the substrate editor (.subst or .ltd).
  • Context menus have been added to pin(s) allowing to create a virtual pin on a layer.
  • The S-Parameter → Save As dialog has a new flag to open a Data Display window after exporting the S-parameters to a dataset.
  • Create Script context menu option has been added to analyses allowing you to transfer an analysis setup to another view. The script can also serve as a starting point for learning how to define an analysis through a python script.
  • Faster rendering of large designs during rotate/pan/zoom. During these operations, a reduced geometry detail is rendered to preserve an acceptable frame rate.
  • Preview the next generation FEM simulator by setting the environment variable RFPRO_FEM_GENERATION=2. The 'pilot' code in the ADS 2020 release brings much faster pre-processing of (multi-technology) designs and a 'Mesh Domain Optimization' simulator option. The new flow can be used as an alternative to the default (RFPRO_FEM_GENERATION=1) FEM simulator.
  • ADS 2020 release is the last release with Python 2.7 as Python 2.7 is  reaching its end-of-life. ADS 2021 release is planned to use Python 3.7. A pilot release with Python 3.7 is available for download. Contact Technical Support for further guidance.
  • ADS 2020 release is the last release to support 32 bits version of Cadence Virtuoso. ADS 2021 is planned to support only the 64 bits versions of Cadence Virtuoso.
• EM Setup
  • An issue has been addressed in the EM Setup based interoperable EM-Cosimulation flow. The view generation failed when 1x1 OA via arrays are present in the layout. 
    
• FEM

  • Mesh generation performance and robustness improvements.

  • Increased robustness of the parallel frequency sweep.
  • Queue resource mapping tied to master/mesh/solve phase with 'sitecluster'.
• Momentum
  • Refinement of the AC-behavior of the new conductor loss model introduced in ADS 2019. When cumulating edge mesh and thick metals, it could lead to an overestimation of the resistance with increasing frequency. This issue has been addressed. The workaround of setting MOM3D_USE_LOCALTHICKNESS = 0 is no longer recommended.

Known Issues

  Back to Feature Updates

Power Electronics

Power Electronics Professional (PEPro)

• Next generation post-layout EM-circuit co-simulation platform for switched-mode power supply (SMPS) designs.
• Automatic optimum settings of EM and Transient/Convolution simulation controllers for SMPS design.
• Pre-built testbenches for Voltage Spikes and Conducted EMI analyses.

For more information, see PEPro.

Known Issues

  Back to Feature Updates

PDK Validator

Process Design Kit (PDK) Validator provides automation technology for delivering high quality, fully enabled ADS PDKs.

• Verify PDKs with a new ADS release
• Enable features (DRC, LVS)

For more information, see PDK Validator.

  Back to Feature Updates

Design Rule Check (DRC)

Assura DRC

Rule Categories

• Improved support for rule files with switches.  Switches are now automatically detected.

ADS DRC

Capacity and Performance

• Improved support for large rule files with many input layers.
• Improved efficiency for the dve_quadout() command
  • Impacts rules that perform an external clearance rule and then extract quadrilaterals from the selected edges.  Can result in a significant performance improvement for designs that contain circles or traces with round end type.

DRC Documentation

• 100+ examples of how to write rules.
• Find information easily.  Browse to the Rules using the Navigation panel.
• Writing Design Rules provides sample rules files that illustrate rule categories and process variants.

Rules syntax updated to show all supported parameters. For example, Polygon Selection rules support a message parameter which provides a simpler rules syntax. 

For more information. see Design Rule Check (DRC).

  Back to Feature Updates

Design Kits

• Updated the Si-RFIC PDK Model Include Utility for the following:
  • “None” scenario has been added as one of the default scenarios.
  • Updated the Model Include Component, you can now invoke the settings dialog box from the component itself.
  For more information, see Si RFIC PDK Model Include Utility.
• Removed the following legacy and old ADS demo kits from ADS 2020 installer:
  • DemoKit
  • DemoKit_V3
  • SampleKit
  • eesofDemoKit
  You can download the above listed design kits from the Knowledge Centre for legacy purposes only. Any training modules using these old kits need to be updated with the latest ADS Non-Linear Demo Kit.
• Updated the ADS Non-Linear Demo Kit for the following:
  • All the DSN references have been removed from the design kit.
  • A new substrate "demo_modified.subst" is added with practical values of material conductivities to synthesize more realistic inductors.
  • CNEX Component Definitions are added to support Calibre LVS and Assura LVS.

  Back to Feature Updates

Verification Test Bench (VTB)

• The Single Port VTB (only Source) simulation is now supported. Now, you can create complex modulated sources in SystemVue and use with ADS Circuit Envelope.
• From ADS 2017, to install files that are required for the VTB functionality you need to download a separate VTB installer (for Windows only). For Linux, the VTB installer is bundled with ADS installer.

• • It is recommended to download compatible ADS and VTB installers to the same directory. After the download, run the ADS installer. This process will automatically install the VTB functionality.
  • If you have already installed ADS and find VTB functionality is missing, then you need to download and install the VTB.

• Upgraded SystemVue 2018 engine in ADS.
  • Added the following new VTBs:
    • 5G Advanced Modem Workspaces
    • NB IoT Workspaces
  • Updated the name of the existing VTBs:
    
    • WLAN 11ac Workspaces

• ADS 2019 only supports import of Custom VTB (SystemVue workspace) created using SystemVue 2018 and SystemVue 2018 Update 0.1.

Known Issues

  Back to Feature Updates

Examples

• All the newly added examples are searchable using the Example Search dialog box.

For more information, see Working with Example Workspaces.

Known Issues

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Licensing

• ADS 2020 requires: a) the version 2019.02 of the EEsof EDA licensing software, b) a minimum code-word version 2019.02 or above, and c) the licensing server software, lmgrd and agileesofd, to be upgraded to at least the same versions as what are included in EEsof EDA Licensing software 2019.02. ADS All-Versions will not start if any of these requirements is not met. Refer to the License Codeword Version Compatibility Table.
• In the EEsof EDA License Tools version 2019.02, licensing vendor daemon (agileesofd) is integrated with FlexNet FNP 11.13.1.4 version (Windows) and FlexNet FNP 11.13.1.3 version (Linux) of FlexNet license manager daemon (lmgrd). For the Windows platform, ADS installer will automatically set up these two new license server daemons by default for the local node-locked license users; for the Linux platform, you need to follow the Linux Licensing Setup instruction to complete the licensing configuration process. For more details, refer to Licensing (For Administrators).

Known Issues

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Documentation

• Starting with the 2020 release, the online help gets a new user interface. The new UI improves overall online help usability by providing the following key benefits in addition to several other minor benefits:

  • Table of Contents Sidebar: Displays collapsible Table of Contents for the entire documentation. The left-double-arrow icon collapses the sidebar, and the right-double-arrow icon displays the sidebar back again.
  • PDF Button: Allows you to instantly generate PDFs of the latest documentation anytime, including current page’s children pages. Currently, the PDF generation option is available only for ADS 2020 release. For other releases, you can switch to their Printing Manuals page and download the existing PDFs like earlier. Note that with the introduction of PDF generation feature, the Printing Manuals page will not be available from next release onward.
  • Product Release Switcher: Allows you to view the current page in other supported releases listed in the drop-down menu. Once you select a release from the drop-down menu, the current page is updated to show the content applicable to the selected release. The Table of Contents is updated as well. With this, you bookmark URL of only one release and then switch to other releases from this drop-down menu.
  • Latest Documentation: The documentation available in the new UI is always kept updated for all supported releases. These updates are available to you as soon as they happen at our end. This provides you 24x7 access to the most recent and technically accurate documentation.

  For more details, see How to Use Online Help.

Known Issues

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Known Issues

Design and Technology Management

• Using ADS 2020 with pycell studio 2018 (PyCell Studio Packages: Release O-2018.09) might prompt you an OA version mismatch warning message on the linux terminal. However, there is no impact on the iPDK flow in ADS.
  Linux terminal message:
  Requested minor API version '518', which is supported by OpenAccess build '22.50.030' is newer than the minor API version '514' of the shared library of OpenAccess build '22.50.043'.

• The Express Pcell plugin that comes with Virtuoso IC version 6.1.8 does not work with ADS 2020 due to an OpenAccess version mismatch.
  Workaround: When running ADS 2020, set the LD_LIBRARY_PATH environment variable path to point to the directory from IC version 6.1.7.

• AEL constants are protected and should not be modified in any DDS expressions.  An AEL error will be issued in case an attempt to modify an AEL constant occurs.

• Python Datalink
  • When using Connection Expert 2019 connected to Lan Instruments, there may be error messages during dl_visa_query() and dl_visa_write().
  • Exceed on Demand: Note that in some cases, EoD settings may need to be configured to properly display Spyder.  Please contact your EoD support representative for additional guidance.

  Back to Feature Updates

Design Editing

• Designs created using Smart Mount for Multi-Technology feature cannot be used to run an electrothermal simulation.

  Back to Feature Updates

Design Guide

• Simulating the "1_Sim_CA" design in the DDR4 CTB design guide prompts the netlist error.
  Workaround: Open the schematic design "PatternGen_CA_Continuous" and arrange the pin numbers in order.

• Simulating of schematics in the HDMI_Link_Simulation design guide prompt the netlist error.
  Workaround: Open the schematic design “HDMI_Diff_RX” and arrange the pin numbers order in order.

Circuit Simulation

• General

  • Simulation Manager may not work on Windows and throw exceptions for some designs.

  • ADS 2019 will not be compatible with Verilog-A files, which have been encrypted before ADS 2019. There is no change for non-encrypted Verilog-A files.

• Electrothermal

  • You may not be able to start a Transient/Envelope Electro-Thermal (ETH) simulation only when the same testbench is open in the viewer of Transient/Envelope thermal results. You need to close the viewer before launching a Transient/Envelope ETH simulation.

  • The electrothermal simulation will not run on designs created using Smart Mount for Multi-Technology feature.

  • Paths set while configuring the ETH controller may need to be updated when the workspace is moved across operating systems.

  • On a fresh Linux machine, electrothermal simulation fails with the following error message:

    Heatwave returned an unknown error code 127.

    Workaround: The error could be due to missing packages, for example, libpng12. Verify your system meets the requirements using the linux_sys_check.sh script. For more information,  see Checking Installed RPM Files and the Operating System Version.

  • If you get licensing errors while running thermal simulation, you may need the following workaround.
    Workaround: Rename the file  $HOME/.eesofrc. For example,  $HOME/.eesofrc-orig.

  • Electrothermal does not support remote simulation, batch simulation, Monte Carlo, tuning, Optimization, and Measurement Equations. Also, you cannot sweep directly on the DC controller.

  • All libraries referenced in a layout should use the same layout resolution, namely the OA database units (DBU) per user unit (UU).

  • You cannot run both a transient and envelope simulation on the same design from one testbench.

  • The calculation of power dissipation from passive components other than resistors may not be correct in harmonic balance simulations.

  • Electrothermal does not support the transient or envelope simulation that is controlled by a ParamSweep.  

  • If you get "Maximum timestep reduced to half of shortest transmission line delay " warning, it can lead to transient simulation to not converge   
    Workaround: Unselect "Limit timestep for Transmission Line" option on Time Setup tab of Tran component to get it work.

  • On Linux, if you specify the THERMAL_DIRECTORY variable in eesof_lib.cfg file using backward slash (..\thermal), the thermal simulation does not run properly.
    Workaround: Specify the THERMAL_DIRECTORY variable using forward slash (../thermal) instead of backward slash.

  • The ETH viewer does not support 4K displays. A few instances of text and icons may appear distorted. 

  • You receive an error message in substrate editor that you cannot use the same layer number more than once. You can safely ignore this error during thermal technology export.

  • On a fresh Windows 10 system, Electrothermal simulation terminates with an error. 
    Workaround: Install the following Microsoft Visual C++ runtime components: 

    http://www.microsoft.com/en-in/download/details.aspx?id=30679 
    https://www.microsoft.com/en-in/download/details.aspx?id=5555

• DDR Design 

  • You receive an error message to check port numbering when performing simulation with SnP component for differential configuration.
    Workaround: Select the first option in Pin Configuration for the SnP component.

  Back to Feature Updates 

HSD Design

• SerDes

  • You receive an error message when runtime libraries for some of the ADS example ibs files (for old AMI models) are unable to get installed automatically during the ADS install. 
    The error appears eventhough the ibs file is supported on specific platform. 
    Workaround: Microsoft Visual C++ 2010 runtime library is required to run the dll files. Download the following library if it is not installed:

    https://www.microsoft.com/en-us/download/details.aspx?id=14632

• EM-SI/EM-PI
  • SIPro/PIPro, Via Designer 
    
    • On Windows 10 with Intel HD graphics, Via Designer may show an error message ‘Failed to use connection between ADS and Via Designer’.  This has been isolated to the latest release of Intel HD Graphics drivers (23.xx.xx.xxxx).
      Workaround: Downgrading graphics driver to the previous recommended driver resolves this issue (e.g. 22.20.16.4836,A05).
    • DirectX 9 as graphics driver is no longer supported. DirectX 11 is thus be used by default. Run "diagdx" to verify which DirectX version is supported on your system.
  • SIPro/PIPro
    • ADS 2020 is not compatible with the latest available Samsung component models released in June 2018. The support for the component models is planned to be added in an upcoming update release.
    • Simulation failure when using components with S-parameter models or for which the model is defined using a lib/cel/view in case the Updating model does not require new simulation is not set. As a workaround, turn on the option. For PI-AC simulations, the options is turned on by default, for SIPro, this needs to be turned on explicitly.

    • If you run SIPro/PIPro on a fresh machine with Suse 11 installed, you may encounter the critical error, "EMPro exited unexpectedly during execution."
      Workaround: Run the following commands:

      cd $HPEESOF_DIR/fem/2020.00/linux_x86_64/bin

      ./startempro --personality=sipi --driver=x11

      Ignore any license related error messages that may show up on executing these commands. These driver settings are saved for future sessions.
  • PIPro-DC
    • Power graph is not correct when VRM's or Sinks are defined starting from pin definitions. All the other result data is correct. This issue does not occur when VRMs and sinks are defined from component instances.

  Back to Feature Updates

EM Simulation

• RFPro
  • Project load fails with the error 'OccDesign::getNet: key not found' when a layout shape has a multi-bit net name (e.g. 'd<7:0>' or 'a,c,net1').
  • With McAfee Endpoint Security (ENS) enabled, the Momentum surface current visualization hangs.
    Workaround: Disable the "Enable Adaptive Threat Protection" flag in McAfee ENS.
  • DirectX 9 as graphics driver is no longer supported. DirectX 11 is thus used by default. Run "dxdiag" to verify which DirectX version is supported on your system.

  • If you run RFPro on a fresh machine with Suse 11 installed, you may encounter the critical error, "EMPro exited unexpectedly during execution."
    Workaround: Run the following commands:

    cd $HPEESOF_DIR/fem/2020.00/linux_x86_64/bin

    ./startempro --personality=rfpro --driver=x11

    Ignore any license related error messages that may show up on executing these commands. These driver settings are saved for future sessions.
• EM Setup
  • On a Virtual Windows 10 system with Microsoft Hyper-V Video display driver, the 3D EM Preview with EM Setup Preprocessing may bring up a dialog with a Hoops error and, after suppressing the dialog, it opens up blank.
• Distributed simulations

  • The example implementation of the sitecluster command for LSF clusters may lead to failing simulations if path or number of threads is too large.
    Workaround: See the workaround details in the sitecluster documentation.

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Power Electronics

• PowerMOS_SiC power devices operate under a very wide range of voltage and current slew rates and it is a challenge to create a model that converges under all conditions – especially conditions that depend upon what components are connected externally to the power device in the circuit schematic. Please contact technical support if you encounter such an issue when attempting to use this model.

• If you run PEPro on a new machine with Suse 11 operating system, you may encounter the critical error, "EMPro exited unexpectedly during execution."
  Workaround: Run the following commands:

  cd $HPEESOF_DIR/fem/2020.00/linux_x86_64/bin

  ./startempro --personality=pepro --driver=x11

  You can ignore any license related error messages. These settings are saved for future sessions.

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Installation

• While installing a new version of ADS, if you see “Previous version detected” error even after you have already run the uninstaller for that version of ADS, you may need to manually uninstall ADS before installation of the new ADS. To manually uninstall ADS, perform the following steps.
  
  1. Exit the current ADS installation session if it is running
  2. Remove or rename the file .com.zerog.registry.xml  under the folder  C:\Program Files\Zero G Registry . Both the folder and the file are by default hidden, so you may need to change the folder viewing setting to show hidden files and folders, do so via the Advanced settings of the View tab in the Windows Folder Options dialog box.
  3. Remove the ADS installation directory through the Windows Explorer.
• After performing the above steps, you can re-start the ADS installer.

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Licensing

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Third Party Applications

• Spyder application menu bar becomes inactive when the window is maximized using View > Full Screen or by pressing F11 (shortcut key to maximize the screen).
  Workaround: Press F11 again to make it the default screen. The menu bar is now active and works fine.

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Verification Test Bench

• Backward compatibility
  In ADS, the customized VTB can have the backward compatibility issue.
  Workaround: To fix this issue, use one of the following method:

1. 1. Open and Save the custom VTB in SystemVue 2018. Now, you can use the custom VTB in ADS.
   2. A built-in workspace conversion tool is provided in the installer. You can convert the custom workspace (.wsv) to the newer SystemVue version. Use the following steps to convert the workspaces:
      • Open Command Prompt in the Administrator mode.
      • Browse the location of the old workspace. For example, C:\ADS_VTB.

      • Run the following command parameter.

        C:\ADS_VTB>"<ADS_Install_Dir>\SystemVue\2018\ win32_64\ bin\ WorkspaceConversionTool.exe" VTB_Examples.wsv VTB_examples_new.wsv

        Where, VTB_Examples.wsv is old SystemVue file and VTB_examples_new.wsv is converted file.

   3. The following successful message is displayed.
      Created: VTB_example_new.wsv

   4. You can now use the VTB_examples_new.wsv workspace in ADS.

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Examples - Known Issues

• Examples under <ADS Install Directory>\examples \Instrument_links folder are not getting opened on Linux where as they are opening fine on Windows.
  Workaround: Rename the ‘Instrument_links’ folder to ‘Instrument_Links’, if you have write permission to the <ADS Install Location>\examples folder. In case you do not have the write permission then proceed with manual unarchive process (File > Unarchive from the ADS Main window) pointing to the Example workspace. 

• Example search might not work and prompt you the "Database is locked" error when ADS installation is on NAS.
  Workaround: Restart the nfslock service on client. In case the problem still persists, reboot the client to unlock the database.

• Unable to compile Pin Diode Model using Visual Studio 2012 on Windows 7 64-bit platform.
  Workaround: Delete the contents of the directory examples\RF_Microwave\UserCompiledModel_wrk\ UserCompiledModel\lib.win32_64 before using UCMs.
• An error occurs while running a custom VTB.
  Workaround: Download and run a custom VTB from the following location: <ADS Install Location>\SystemVue\2016.08\win32_64\VTB. 
  

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Documentation

• On Windows, Printing directly from installed help generates non-readable output.
  Workaround: Use PDF version of the document for printing purpose.

• From ADS 2016.01 onwards, in ADS help when you open a page using the "Open a link in new tab" option the help does not open a page in a different tab by default. You need to set the preferences to open any link in a new tab.
  To set the preferences:

  1. From the ADS 20xx (or the installed version) Help, Click File > Edit > Preferences.
     The Preferences Dialog box is displayed.

  2. Select the Options tab.

  3. Under Appearance, select the Show tabs for each individual page option.

  This is one time setting for a particular release of a product.
• Unable to open online help, any external link, or Embedded Survey link in Linux on Mozilla Firefox browser.
  Workaround: Use Mozilla Firefox version 39 or above or keep the Firefox window open and then try to open online help.
• While using the installed ADS help, you may encounter issues like help not showing any content, it throws an error, it displays unexpected hierarchy in the Content tab, or it does not display any search results.
  Workaround: Close the help, delete the contents of the following directory and open the help again. 
  
  • On Windows:  C:\Users\<Windows_Login_ID>\AppData\Local\Keysight\Help
  • On Linux: $HOME/.local/share/Keysight/Help
• ADS installed help search does not support [] or {} or any other text using these combinations.

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