In addition, the toolkit also supports Microsoft. Once the I/Q waveforms are translated, you can download and playback the waveforms. The toolkit can translate the I/Q waveforms created in common development environments, such as Matlab and C++, into the proper file format for the target baseband generator. N7622B Signal Studio for Toolkit is a free software utility for Keysight VSGs that downloads and plays back custom I/Q waveforms. Keysight BenchVue user interface for signal generators Keysight N7622B Signal Studio for Toolkit In addition, BenchVue includes an easy-to-use test flow to control instruments automatically as shown in the right of Figure 2.įigure 2. Select the folder of waveform files and download them to the signal generator. You can quickly configure the most commonly used measurements and setups for multiple instruments, including signal generators as shown in the left of Figure 2. Keysight BenchVue is a PC-based software. In addition, you can send SCPI commands to control your signal generators from the Matlab command line. The Download Assistant software is a free software utility that enables you to download your custom I/Q data into the baseband generator of any VSG and use a single MATLAB command to play it back. Keysight provides download utilities to simplify downloading waveforms into the signal generator by automatically converting waveforms into the file format required by the baseband generator. File structure map for the Keysight MXG signal generator Keysight Waveform Download Tools Figure 1 shows the file folder map for the Keysight VSG.įigure 1. The “SECUREWAVE” directory is not an actual storage directory, but rather a portal for the encryption and decryption process. Make sure you place waveform files in the right folders. These data files are located in the “HEADER”, “MARKERS”, and “WAVEFORM” folders, accordingly. A waveform segment consists of the file header, marker data, and I/Q waveform data. Sequence files are in volatile memory (VM) in the “SEQ” folder. Use the signal generator’s internal web serverĪs mentioned in a previous post, there are two types of waveform files – segment and sequence.Use the Microsoft Internet Explorer FTP feature. You can use FTP to transfer waveform files. If the waveform files are in the signal generator’s non-volatile memory (NVM), you can load the waveform files directly from NVM to volatile memory (VM) through the signal generator’s user interface or send commands via a programming environment. There are three ways to download waveform files to the Keysight signal generator’s VM: By file transfer protocol (FTP), programmatically, or through Keysight waveform download tools. Waveforms must reside in the signal generator’s VM (also known as waveform memory) before you play, edit, or include them in a sequence. Whenever you download waveform files to memory, you need to be aware of your signal generator’s remaining memory. Remember to copy the waveform files to NVM so that you do not need to regenerate the waveforms from an external computer. The storage media can be an internal hard drive or a USB drive. In contrast to VM, NVM can retrieve stored data even after the power cycled through. Rebooting the signal generator deletes the files in the VM. The baseband generator plays the waveform files from the VM, so it is commonly referred to as waveform memory. When the power is off, stored data in VM is lost quickly. The VM requires continuous power to retain stored data. Signal Generator MemoryĪ VSG has two types of memory – volatile memory (VM) and non-volatile memory (NVM). Let’s start with the types of signal generator memory. In this post, you will learn about several methods for downloading waveform segments into a VSG. In the blog post “ Understanding Baseband Waveform Data and Structure for Vector Signal Generators” you learned about the structure and format of waveform files. You need download utilities to automatically convert waveforms into the file format required by the baseband generator. Similar to digital audio file formats such as WAV, MP3, and AAC, you need an audio codec to decode raw audio data in order for the player to convert the data into an analog signal. Dual AWGs control the playback sequence of waveform segments that reside in the memory in the internal baseband generator. RF vector signal generators (VSG) use dual arbitrary waveform generators (AWG) to generate baseband I (in-phase) and Q (quadrature) waveform signals. Download I/Q Waveforms into a Vector Signal Generator
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