Lumerical fdtd monitors. Time Measures E, H fields over time by default.

Lumerical fdtd monitors Feel free to ask questions in the comments. Single interface between two dielectric mediums. Frequency domain field monitors can require large amounts of memory when recording data over a large spatial domain. For comparison, the movies created by the standard Movie monitors in the simulation are shown below. Syntax lumerical-py-scripts/ ├── DEVICE │ ├── electro_optic │ └── pin_modulator ├── FDTD │ ├── directional-coupler │ ├── disk_resonator_coupler │ ├── edge_coupler │ ├── grating_coupler_2D │ ├── mmi-couplers │ ├── ring_resonator_coupler │ ├── swg_grating │ ├── vertical_taper │ ├── waveguide-bend Dec 1, 2021 · Here, we review the use of FDTD simulations in biology and present a brief methods primer tailored for life scientists, with a focus on the commercially available software Lumerical FDTD. We will also learn about the available types of sources and the various types of monitors, and their recommended usage in Ansys Lumerical FDTD. Calculating Pabs Run the simulation with FDTD mesh accuracy of 2 and then run the analysis script, which will create a number of figures. I would like to ask about the "T" attribute in Lumerical FDTD. For example, monitors in FDTD and MODE typically return data in 4D matrices where the first three dimensions of the matrix correspond to the spatial dimensions X, Y, Z, and the 4th dimension corresponds to the frequency or time dimension, depending on the type of monitor. If the total energy in the simulation volume is many times larger than the injected energy, the simulation will be stopped. e. Please note, after running the script command, results will be returned as datasets. Various monitors have many similarities as well as differences. We need to link the main script to the Lumerical python API file which is stored locally on our PC within the Lumerical folder. Movie monitors capture a desired field component over the region spanned by the monitor for the duration of the simulation. However, if using FDTD, using the port objects in conjunction with the S-parameter sweep tool is recommended since they make it easy to set up and automate the S-parameter extraction without needing to set up separate sources and monitors at each port of the device. The time monitor provides time-domain information for field components over the course of the simulation Syntax Description addtime Results & Applications Ports are generally used for S-parameter calculation and are a combination of a mode source and monitors. The structure exhibits a resonance with a high quality factor (Q-factor). At the Lumerical empowers R&D professionals with best-in-class design tools and services to support the creation of better photonic technologies Electric field monitor records the electric field within the monitor region as well as the electrostatic potential. Oct 6, 2022 · FDTD Note: lsf Language 12 minute read Published: October 06, 2022 Learning notes for lsf script language of Lumerical FDTD. This lesson is part of Results & Applications The frequency-domain field monitor returns the Fourier transform of time-domain fields. The functions require the spatial near field EM data (typically from an FDTD simulation) FDTD Getting Started Manual - Free download as PDF File (. These can be returned in either the Continuous W Frequency-domain monitors for the FDTD solver record the Poynting vector by default. This method does not increase accuracy. Syntax Desc Frequency-domain EM field monitors collect information related to electromagnetic field data in the frequency domain from simulation from specific spatial region within the simulation in the DGTD s Effective index monitors records the effective index values as a function of frequency/wavelength in a varFDTD simulation. Adds a movie monitor to the simulation environment. This lesson is part of the Ansys Innovation Aug 13, 2022 · Greetings. The following video lesson demonstrates the setup of a movie monitor in a simulation file containing a photonic crystal cavity structure composed of a slab w The near to far field projection functions allow the EM fields to be calculated anywhere in the far field. This lesson is part of the Ansys Innovation Index monitors records the n and k value as a function of frequency/wavelength in a simulation. I simulated a metasurfaces despite the sources amplitude is on 1 but the output diagram for reflection monitor which is DFT monitor is not between 0-1. It outlines how to set up a simulation by adding structures like rectangles and circles, defining a simulation region and source, adding monitors to view fields, and performing parametric sweeps and optimizations. Movie Generates an Apr 13, 2022 · This is a frequently asked question, as Lumerical calculates the "transmission" by definition, and defines the positive value when the energy flow is along the positive axis direction, and the negative value when light travels along the negative axis direction for some purposes. [Example Library] [FieldProjections] This notebook demonstrates how to perform far-field projections in Tidy3D FDTD. A value of 0. In this video lesson, you will learn The Mode Expansion monitor facilitates the interoperability between FDTD and INTERCONNECT as it returns the S parameters, which can be imported into INTERCONNECT directly. May 2, 2024 · Hello, Thank you for the reply. For example, a set of monitors can be grouped together to form a closed box. This video lesson provides an overview of the various monitors available in Lumerical FDTD. This command will return an error in analysis mode. In this page we compare the Analytic results from STACK with 1D FDTD simulation for a 4 layer dielectric. Would someone help me with this issue?Thank you very much! Ansys Lumerical FDTD Getting Started This introductory FDTD course covers solver physics, simulation workflow, and data analysis. Sometimes, it is hard to get a sense of the absolute phase. Index monitor records the spatial profile of refractive index or surface conductivity. Jan 13, 2023 · You can also use matlab, but before sending data to matlab, please interpolate the data as matlab uses linear data, but Lumerical uses auto- non-uniform mesh. Apr 9, 2024 · You can simply use a transmission (Frequency domain field and power) monitor. When possible, use 1D or 2D rather than 3D monitors. We use the plane wave source technique to calculate the transmission and reflection from an Using visualizers: Data can be sent to visualizers in the graphical user interface by right-clicking on a monitor or object containing data in the Objects Tree, or right-clicking on a result in the Result View window and choosing the “Visualize” option. Results & Applications The time monitor records fields as a function of time. You can also get a CW movie: Making Jul 22, 2024 · 图2. Learn about the different types of monitors in Ansys Lumerical FDTD, their usage, and how to set them up effectively. Mar 13, 2023 · Hi, i try to find propagation loss using Mode Expansion monitor in FDTD module. Injected plane wave as excitation. Reference for Lumerical FDTD Simulation software Field monitors in FDTD and MODE are used to calculate and save spatial electric field data. Available monitors in FDTD are: Index Measures refractive index and surface conductivity over space. See full list on optics. From the ra Lumerical – getresults – Script Command for Result Acquisition Need assistance in acquiring results from a simulation object in Ansys Lumerical? Thankfully, the process is relatively easy and straight-forward. You can use the "Frequency-domain field and power" monitor in Lumerical FDTD to obtain the reflection spectra. Results will be returned as datasets. 3 means that 30% the optical power injected by the source passed t Results & Applications The mode expansion monitor calculates how much of the propagating field is coupled into specific modes of the waveguide. The frequency domain field monitors in the FDTD and varFDTD solvers record the electric and magnetic fields at a series of user-defined frequencies. Apr 12, 2022 · Thank you for your quick reply. To achieve this I've modelled an MMI in Lumerical, but would like to extract the phase at the exit ports of the multimode section. You can see that some fields leave the simulation The FDTD reference manual provides detailed descriptions of product features. In this example, we will consider how Mode Expansion Monitor can be used for analyzing the fraction of power transmitted into the fundamental mode in FDTD, particularly for calculating the power reflection and transmission of a waveguide facet. All t Results & Applications The frequency-domain field monitor returns the Fourier transform of time-domain fields. Used to check mesh order and meshed structure cross-section. The raw electric field data within the monitor is distributed between several matrices: Each vector field component is stored in a matrix (Ex, Ey, Ez), and the four associated position vectors (x,y,z,f) are also stored as separate matrices. This lesson is part of the Ansys Innovation Returns the amount of power transmitted through power monitors and profile monitors, normalized to the source power. Ansys Lumerical FDTD When you set up an electromagnetic simulation using Ansys Lumerical FDTD from within IPKISS, you go through the following steps: Define the geometry that represents your component. In those cases, you can use a narrowband source with multiple frequency points and calculate the relative phase at each point with respect to the phase at central frequency to get more insights into how phase changes over the spectrum. This command requires the presence of a CHARGE solver region in the objects tree. May 19, 2021 · Dear Lumerical Support TeamI wonder how we extract the phase (degree) in electric field ?So far, I have done using frequency domain field profile monitor to take Im(Ey). e. 6k 阅读 NOTE: Changing the frequency and far field settings The window to select frequency and far field settings can always be opened again by right-clicking on the "farfield" result for the monitor under "Result View". Lumerical provides many built in analysis groups in our objec The movie monitor records the fields over time and saves them in a movie file format. 2. In the future, the index monitor will be able to capture the time-evolution of the physical properties profile for nonlinear media. a GPU with 40 SMs requires three licenses to run the simulation. Saves workspace variables to a Lumerical data file (ldf) file. 4. Time Measures E, H fields over time by default. Unlike the 'field and power' monitor, the 'profile' monitor does not snap to the nearest mesh cell and uses interpolation to record the data exactly where the monitor is located. without running the simulation). Does it mean power transmission or electric field transmission? Could anyone please give any idea with explanation and proof? Oct 31, 2023 · 您好，我想问一下就是我选择了一个frequency-domain profile and power监视器监视电场的情况，仿真结束之后点击visualize中E的情况，这里展示的结果是一个平均时间作用的电场结果还是某个时刻的电场结果？如果是某个时刻的结果那它跟时间监视器有什么区别呢？ Sets global monitor properties. So far I used method 1 but because the plane monitor has to be as wide as possible, the simulation is quite time consuming. Adds a mode expansion monitor to the simulation environment. The following video demonstrates the setup of a mode expansion monitor which can be used to extract the conversion efficiency of a polarization converter taper. Geometry tabMONIT Adds a frequency domain field profile monitor to the simulation environment. This lesson is part of the Ansys Apr 5, 2022 · Hi all,Recently, I've noticed strange errors in my simulations. Results & Applications The movie monitor records the fields over time and saves them in a movie file format. Ports can be used alone or in conjunction with the S-parameter sweep tool to extract the S-parameters f Sep 11, 2025 · 文章浏览阅读3. Sep 11, 2025 · 文章浏览阅读2. See Information on Hardware Specifications for details on how different hardware components affect Lumerical FDTD simulations. Units for electrical and thermal solvers Unless otherwise stated, Lumerical uses SI units. I have a problem. Sep 27, 2021 · FDTD is a time domain method, so it is possible to get the time response. Related resources FDTD course: A self-paced course intended for beginner to intermediate users with a focus on provi Get results from simulation objects. Designers can combine a vast collection of finite-difference and finite-element optical engines with charge and heat transport solvers to model opto-thermal and electro-optic effects in two and Mar 3, 2024 · Lumerical_Frequency-domain Profile and Power monitor 123456 频域场监视器和频域场和功率监视器 频域场监视器从 FDTD、varFDTD 求解器中模拟中某些空间区域的模拟结果中收集频域中的场分布。 在大多数情况下，我们建议使用“场和功率”监视器。 For Ansys Standard/Business licensing, a Lumerical FDTD solve license is required for every 16 SMs with no partial counting. Syntax Description ?getresult("monitor_name"); Returns the names of all the results for the monitor. Note: The ‘addpower’ command is deprecated and will be removed in future releases. 3. For INTERCONNECT: The getdata command is available in INTERCONNECT for compatibility with other Lumerical products, but it's best to use the getresult script function to access INTERCONNECT simulation data. 3w次，点赞44次，收藏214次。本教程为FDTD自学整理笔记系列的一部分，专注于讲解监视器Monitors的使用方法，适合初学者掌握FDTD仿真软件中监视器的功能与操作。 Analysis objects allow you to group monitors (similar to structure groups) and to analyze that monitor data. 光学仿真新手必看！本期视频带你走进超构表面的世界，详细解析 Lumerical FDTD 中频域功率监视器的设置方法，从理论到实战，轻松上手超表面仿真！快来学习吧！, 视频播放量 1419、弹幕量 0、点赞数 20、投硬币枚数 6、收藏人数 58、转发人数 2, 视频作者 今天也在分享, 作者简介 ，相关视频：【FDTD Then, AFTER the FDTD simulation, multiply the →E E → and →H H → fields collected by frequency domain monitors by g(ω) g (ω). This lesson is pa Monitors record data from simulations. Use of power monitors. Multiphysics Component Design Lumerical’s highly integrated suite of component design tools is purpose-built to investigate and understand complex multiphysics effects occurring in photonic devices. txt) or read online for free. These monitors are contained in the curve2 group, and the location of the monitors can be easily modified to lie along any arbitrary curve in 3D. pdf), Text File (. The video, however, does not go into detail on the relationship. Jun 21, 2022 · When simulating with FDTD (I am using Lumerical), I know there is a relation between the simulation time and the accuracy and frequency resolution available from the frequency domain monitors [mentioned in this video on the Auto-Shutoff Level in Lumerical]. Lumerical provides a set of grating scripts as well as “grating order transmission” analys. Calculation of power reflection and trans Ports can act as a combination of mode source, field monitor, and mode expansion monitor. In this video lesson, you will learn about the key settings common to most monitors in Ansys Lumerical FDTD. This page explains how to use the data visualizer and figure windows to view your simulation data. The time monitor records fields as a function of time in Ansys Lumerical FDTD. Gen Apr 25, 2022 · How to overcome the problem of transmission monitor giving results greater than 1 or less than 0 in Lumerical FDTD? In my problem, the plasmonic nanostructures are quite reflective. Syntax Description addmodeexpansion; Ad Adds an electric field monitor to the simulation environment. In this example the second frequency point is projected. For example, the lumapi may be found at the following address (depending on distribution). Apodization makes it possible to exclude effects that occur near the start and/or end of the simulation from the monitors fourier t Ansys Lumerical FDTD™ Modern User Interface Introduction In 2025 R1, we have introduced a new modern user interface to the Ansys Lumerical FDTD™ software. This article will Apr 16, 2021 · I am a beginner in Lumerical and I have got a diverging issue After seconds of running simulation, the auto-shutoff level will increase dramatically and it will display: Warning! The simulation that created the data in the monitors and sources below diverged, and the data is likely invalid. A profile monitor is used to record the field profile at the taper output. These movies show how the fields evolve during the actual FDTD simulation, including the initial broadband source pulse and all transients that occur as the field propagate through the simulation volume. Specify the simulation job, consisting of the geometry, the expected outputs and simulation settings Inspect the exported geometry Retrieve the simulation results 1. However, you can get the CW steady state result by use of frequency domain monitors. For information related to product licensing, installation, high-performance computing, and scripting, please see the Knowledge B This is part 1 of a tutorial of how to simulate electromagnetic scattering from nanoparticles using Lumerical FDTD. Got a technical question? Get high-quality answers from experts. To save monitor (D-card) data to an ldf file, see the savedcard function. Could you please elaborate a lottle bit on this " It is not suggested to place a monitor exactly on the interface, since FDTD is discrfete and needs interpolation to get the fields on a specific plane". Following this, we will take a look at the Ansys Lumerical FDTD solver region object which is used to specify the simulation time, the simulation region, mesh, and boundary conditions. If an FDTD the index monitor holds results automatically without running simulations if a solver region is present. The geometry of effective index monitors is restricted to 2D z-normal. The following graphical warning shown will appear in the Job Manager and Object tree when a diverging simulation is detected. 由于模式失配光场传播路径畸变，但透射率仍接近1，无法分析损耗 使用mode expansion step1 将mode expansion 的位置、尺寸与Power监视器Output_WG的设置成一致，并在mode expansion监视器的Monitors for expansion中选中 Output_WG，完成绑定。 For example, monitors in FDTD and MODE typically return data in 4D matrices where the first three dimensions of the matrix correspond to the spatial dimensions X, Y, Z, and the 4th dimension corresponds to the frequency or time dimension, depending on the type of monitor. By the end of this course, you will be able to ex These monitors provide time-domain information for field components over the course of the simulation. Please see the Diverging simulation page 1 for help on See FDTD Performance Benchmarks for information on the performance of FDTD on some of the AWS instances we have tested on. I cannot visualize the E field or other results. Can record and return P if specified. Returns E, H, the spectrum of E and H. The field profile from the initial simulation will be used as the source field profile for the second simulation. Syntax Description Sep 24, 2023 · Hi Ziyao, You should be able to get the phase from the mode expansion monitor. In FDTD, it is possible to preview the index profile while still in Layout mode (i. These movies are inherently broadband. Notes Stop Ansys Optics or reboot your computer before doing the process outlined i Example This example plots the far field projection of a 1D monitor called monitor. In MODE an active varFDTD region needs to be present for this command to work. Movie monitors are only available in the two-dimensional variety (and onl Introduction to Monitors Monitors record the index and field data from simulations. Define the geometry We’ve Results & Applications The index monitor records the spatial profile of refractive index or surface conductivity. In my case, the half box lies on the substrate. For the example of far field projection of a rectilinear dataset see farfield2d. ansys. Syntax Description ?setexpansion; List all monitors under the "Monitors for expansion" list for the selected mode expansion m This document provides instructions for using Lumerical FDTD Solutions software. Therefore, calculating power is simply a matter of integrating the Poynting vector over a surface. The next two images shown below come from the monitor groups located at 45 degrees into the waveguide. Regards, Amrita April 11, 2024 at 10:57 pm minusunny Subscriber Jun 16, 2023 · Hello, everyone. This article provides more information on the workaround: Creating curved and angled monitors. E2=farfield2d("monitor",2,501); Simulation results are typically stored in datasets simulation or monitor objects Lumerical products. I I changed the wavelength of the plane wave to a different frequency, but I didn't get the result. The RCWA Field Monitor collects the field profile in the frequency domain on a rectilinear grid from simulation results across some spatial region within an RCWA solver simulation. The following script command will add a solver region following the script above and will visualize the index preview. ? I run a simulation by placing the box of monitors close to the dipole source as shown below. Placing the monitor in front of t This page describes the apodization option of Frequency monitors. I will run a parameter sweep, and Lumerical will successfully execute the first 10 or 15 simulations, but then one simulation will complete but there won't be any data in any monitors, and so when my script tries to retrieve the data I get an error In FDTD and varFDTD simulation regions, the user can directly specify all the parameters that control their absorption properties including the number of layers. This article will describe how datasets and raw simulation data can be accessed and processed when using the Python API. Lumerical provides many built in analysis groups in our object library. However, since it uses pulse, you will not be able to get the instant result at specified frequency during the simulation. Time-domain monitors can consist of point, line, or area monitors to capture this information over different spatial extents within the FDTD and varFDTD simulation regions. Sep 12, 2023 · Hello there,I am very excited to see the newest Lumerical FDTD support GPU computation, which really speeds up the simulation process. The first three figures show a cross section of the electric field intensity and material properties at y=0 for the second frequency point (at a wavelength of 500nm). In this video lesson, you will learn when and how to use the ports. In this course, you will learn about the various types of monitors and their usage in Ansys Lumerical FDTD. This can be used to recalculate the far field projection without rerunning the FDTD simulation. In this video lesson, you will learn when and how to use it. 1. Movie Generates an The mode expansion monitor calculates how much of the propagating field is coupled into specific modes of the waveguide. Introduction Simulation results can be visualized using 1D lines, a 2D surface, and 3D plots To simplify post-processing of simulation data, the default behavior of monitors in FDTD is to interpolate all field components back to a common set of points (the origin of the Yee cell). I'm calculating the mode overlap between my Spot Size Converter (SSC) and an optical fiber (SMF-28, NA = 0. Adds a time monitor to the simulation environment. 14) in Lumerical FDTD using the Mode Expansion Monitor and Linear DFT Monitor. The example will demonstrate how to accurately Lumerical – getdata – Script Command for Raw Data Pull Need assistance in Ansys Lumerical obtaining raw data from a simulation object? The majority of the time, retrieving the entire dataset using getresult is more practical than getting individual data components using Lumerical’s getdata command script. But let me get some second opinion on this and get back to you. That being said, are you trying to confirm the mode solver's result with FDTD? Because the mode solver of Lumerical is pretty accurate, provided that you are using correct material refractive index data. By the end of this course, you will be able to ex This page describes how to calculate fields outside of a closed surface using a box of monitors and the far field projection functions. g. Key steps include editing object properties, checking simulation requirements, running simulations Monitors record data from simulations. Multiple datasets can be visualized in the same plot when plotting line plots. The frequency domain field monitor returns the Fourier transform of time-domain fields. In Ansys Lumerical FDTD™ 2025 R2, explicitly saving simulations in analysis mode after a GPU simulation completes causes monitors to lose results when you reload the file. Some scripts are cross-compatible with MODE as well. If the monitor only contains data at one frequency, the second argument is not required. This article shows the process on resolving common runtime or engine errors when running Lumerical simulations. Using this information, it can also calculate the total charge within the monito Jul 22, 2024 · 【lumerical学习笔记】Frequency-domain field monitor 原创 最新推荐文章于 2024-07-22 11:37:13 发布 · 2. Automatic divergence checking Lumerical software has an automatic divergence checking feature. Please press this button to open the online library of analysis groups and select optical power category to insert transmission boxes. The following table summarizes how to interpret the ux, uy coordinate vectors and periods input properties for various monitor orientations. Results & Applications The index monitor records the spatial profile of refractive index or surface conductivity. Ports are generally used for S-parameter calculation and are a combination of a mode source and monitors. For more information and tips on best practices to get the most accurate results from this monitor, see using the mode expansion monitor. Using a monitor placed behind the source is the common and simplest method. How to convert in phase ?Do you have any examples?Thank you in advance! Apr 14, 2022 · In this lecture, we show how to use FDTD to solve a basic EM problem involving the transmission of light though a slab of material. The 'field and power' monitor also records the electric and magnetic field in the frequency domain along with the power. Apr 26, 2022 · The topic ‘FDTD simulation: phase value (phase monitor)’ is closed to new replies. This can greatly reduce the duration of the convolution time window as well as the total simulation time until the autoshutoff conditions are met, while giving the same results. However, after running the simulation, there is nothing in the DFT monitor. The result in such a monitor is from the Fourier Transform of the time signal. com In this course, you will learn about the various types of monitors and their usage in Ansys Lumerical FDTD. This might be a The files in this section were created using FDTD, but the same analysis group can be found in the Component library in MODE. Does anyone know of any elegant methods of achieving this? 1) Model the large taper without the nano-particle using the normal mesh settings (mesh accuracy 2). 4w次，点赞44次，收藏166次。本文详细介绍了光场监视器的五种类型——时间监视器、折射率监视器、电影监视器、场分布监视器和功率监视器的设置方法，包括它们的几何类型和设置代码示例。帮助读者理解并掌握在仿真软件中有效使用这些监视器进行结果评估。 Lumerical_FDTD_Scripting_Tools A collection of scripts categorised by their use-case intended for use in the Lumerical FDTD solver in the Ansys optics suite. Prior to utilizing getdata, don’t forget to launch the simulation first. Useful commands in ScriptPrompt In this course, you will learn how to view simulation results, plot, and export data, how to perform additional post-processing of monitor results using analysis groups, and how to verify the accuracy of simulation results in Ansys Lumerical FDTD. 2) Model a nano-particle and a small portion of the taper. This page describes three different methods for measuring reflectance from a structure. 9k次，点赞36次，收藏10次。本文介绍了如何在 Lumerical 中添加和配置频率域功率监视器，包括设置仿真区域条件、监视器类型、位置、空间采样率、场分量记录及空间插值选项。理解这些参数有助于优化仿真结果并有效管理内存和硬盘存储空间。 The FDTD solver is used to model a one-dimensional multilayer stack cavity. Product reference manual for usage of all Ansys Lumerical products. but i gotten 0 loss so far. Associates a DFT monitor with a mode expansion monitor. Mastering Reflectance, Transmittance, and Absorptance Calculations in Lumerical FDTD for 100nm GaAsStep-by-Step Guide: Calculating Reflectance, Transmittance This example characterizes a diffraction grating in response to a broadband planewave at normal incidence. I don't it depends on something else too or not. Syntax Description addefieldmonitor; You should consider looking at the phase difference between the source and the field monitor 'in frequency domain'. Concerning method 2, I used the Analysis group: far field from closed box. Learn about Ansys Lumerical FDTD and explore how to set up, run and analyze a simulation in this Ansys Innovation Courses Learning Track. This interface uses a tabbed toolstrip menu with dedicated tabs for common tools, the FDTD, the RCWA, and the STACK solvers. Lumerical doesn't have an angled monitors. In this video lesson, you will learn when and how to use the mode expansion monitor. i am running a simple straight waveguide with the parameters as below:design size: 100um x 100umSU8 - core (width 4um, height 4um)Air - claddingSiO2 - buffer - 1umSi substrate - 5um is there a proper way At the most basic level, the Lumerical Python API can be used to directly invoke Lumerical script commands and interact with the product as the Lumerical Scripting Language would. I tried by only using half of the box (upper half) but it seems that the result is not as good as using a single monitor. So, My farfield pattern in this case is a little bit different Jan 9, 2024 · 文章浏览阅读1. Quantity Description Units Unit description L Length units in semiconductor models This is ‘imp’ is a standard python library which allows us to import a local file. ixosjlh giderfcw djvo eycjfad mpwytt rsh lxwzhz zzmvenbi gmkp msgcj orldzg bhgtp sygvfcx rmw nhsa