Jlab Driver

[Heron Mathis]

Iused an relatively old CAEN SY1527 chassis which was used for the magnetic field tests in the Test Lab during the Hall D solenoid tests. It has two 1535N cards in it and one A1532 card. We started with the firmware version 2.00.02, and upgraded to 3.01.05 using flash sent to us by CAEN. To be able to control it we have to manually assign it its IP address after obtaining it from the Computer Center.

We sent an e-mail to Ru Igarashi asking him for his EPICS driver for SYx527 CAEN HV chassis. He sent us a tar ball with what he currently had, plus a User's Guide. It is not clear how much effort Ru will be putting into this project. He says that:

It is also apparent that some of the functionalities that were implemented need improvements, some of the parameters are hardcoded in the source files. So, if we want to use this driver, we will need to evaluate it, identify the problems, fixed them and add more control features. like board and crate-wide functions.

We took Ru's tar-file and adopted his source code and his EPICS database to our current EPICS scheme. We also used his EDM screens to evaluate the driver for the first time (automatic conversion to BOY OPI failed). The driver connected to our test SY1527 chassis and the EPICS records seemed to work. To start an IOC for a single SY1527 chassis with debug level = 0 we need to issue the following command:

We can also use multiple chassis by listing them on this command line. All chassis will assume single (username, password) combination which is at this point is hardcoded in the source of the EPICS driver.

Both the EPICS support and the application adjusted for our framework has been checked in into Hall D SVN repository. The applications, the database configuration with the Makefile will need a lot of modification. The example application was loading just a single board in one DB file using MSI EPICS extension for template substitutions.

Hall B also developed EPICS support for CAEN SY1527 HV chassis. It has been extensively used for CLAS. It can be considered as a fallback to CLS EPICS support if for some reason it turns out not to match Hall D needs.

The source code for the EPICS device/driver support is in the Hall D software repository : It is created with usual EPICS makeBaseApp.pl script. First one needs to check out the source code from SVN:

The code of the application to control IU HV bases is located in the Hall D software repository, which is the common application for all types of HV chassis in Hall D: you are in the top directory where you keep your EPICS applications, go to hvChassis directory, then build the libraries

To manually start the IOC for IU bases go to $IOC/your_ioc_name . There you need to have a script that launches the executable for IOC, loads the DB files and initializes the IOC. And example of such setup can be found at :

At CES 2023, budget-friendly earbuds (and other stuff) brand JLab showed off a few new models, including some super-small true wireless earbuds called the JLab JBuds Mini, and I just had to stop by to see them up close. Being close was necessary, you see. On account of them being so small.

In the last few years, as companies started putting more and more features and technology into the best true wireless earbuds, they started getting bigger and heavier. But people don't love putting huge, unbalanced-feeling buds in their ears, so suddenly it became a race to start creating lighter and smaller buds with the same features, resulting in the likes of the Sony LinkBuds S and Beats Studio Buds. I've always like Apple's AirPods Pro and AirPods Pro 2 because they've consistently been at the lighter end of things.

The JLab JBuds Mini are for people with very small ears, or who want to always carry their buds around without them taking up much space. They are so small. You can see the overall comparison with my AirPods Pro at the top of the story, and here's just the cases.

They have a little fabric loop built into the case so that you could attach them to your keys and use them as a keyring, and they're the first buds small enough where that seems like a pretty reasonable thing to do, to me.

The earbuds themselves aren't so small they're a pain to get in and out of your ear or anything. Their oval shape means they stick up slightly from the ear canal, so it's easy enough to get your fingers around them.

I didn't get a chance to listen to them, but the driver is 6mm in size, which is the same as the JLab Go Air Pop, despite the buds being 30% smaller than the other model. We rate the Go Air Pop as the best budget wireless earbuds in their price range for sound quality, so I expect pretty much the same performance from the JBuds Mini, and that'll do just fine.

Matt is TechRadar's Managing Editor for Entertainment, meaning he's in charge of persuading our team of writers and reviewers to watch the latest TV shows and movies on gorgeous TVs and listen to fantastic speakers and headphones. It's a tough task, as you can imagine. Matt has over a decade of experience in tech publishing, and previously ran the TV & audio coverage for our colleagues at T3.com, and before that he edited T3 magazine. During his career, he's also contributed to places as varied as Creative Bloq, PC Gamer, PetsRadar, MacLife, and Edge. TV and movie nerdism is his speciality, and he goes to the cinema three times a week. He's always happy to explain the virtues of Dolby Vision over a drink, but he might need to use props, like he's explaining the offside rule."}), " -0-10/js/authorBio.js"); } else console.error('%c FTE ','background: #9306F9; color: #ffffff','no lazy slice hydration function available'); Matt BoltonSocial Links NavigationManaging Editor, EntertainmentMatt is TechRadar's Managing Editor for Entertainment, meaning he's in charge of persuading our team of writers and reviewers to watch the latest TV shows and movies on gorgeous TVs and listen to fantastic speakers and headphones. It's a tough task, as you can imagine. Matt has over a decade of experience in tech publishing, and previously ran the TV & audio coverage for our colleagues at T3.com, and before that he edited T3 magazine. During his career, he's also contributed to places as varied as Creative Bloq, PC Gamer, PetsRadar, MacLife, and Edge. TV and movie nerdism is his speciality, and he goes to the cinema three times a week. He's always happy to explain the virtues of Dolby Vision over a drink, but he might need to use props, like he's explaining the offside rule.

I am having trouble pairing my earbuds to Windows 11, it keeps asking me if the PIN matches. (see attached picture) I have already tried restarting my laptop, I have tried the Troubleshoot Settings--> other troubleshooters--> Bluetooth and I have tried updating Device Manager --> Bluetooth --> Updating all the Drivers . Nothing has been successful. ![237541-jlab-jbuds-anc-earbuds.jpg][1] [1]: /api/attachments/237541-jlab-jbuds-anc-earbuds.jpg?platform=QnA

JLab is one of those generic audio brands producing a range of budget wireless earbuds. The company is significantly shifting by partnering with Knowles Corporation (NYSE: KN), a leading supplier of high-performance electronic components, including capacitors, advanced medtech microphones and balanced armature speakers. Today, JLab is launching its Epic Lab Edition earbuds, the first True Wireless Stereo (TWS earbuds to feature the Knowles Preferred Listening Response Curve.

Balanced armature drivers are often used in hearing aids because they are miniature speakers that create crisp treble frequencies. When used alongside traditional dynamic drivers, with a rich and fulsome bass, earbuds with balanced armatures can make a sound as extensive and detailed as a pair of loudspeakers.

As more audio codecs reach the market that can transmit all the detail in high-resolution audio recordings, wireless earbuds need a way of producing that more detailed sound that provides a sharper focus to have a broader and more convincing soundstage, especially with stereo and surround sound recordings.

Using Knowles balanced armatures in their new premium earbuds, JLab could reproduce the higher frequencies necessary to produce the sound that brings depth and life to a recording. Epic Lab Edition users can also customize their equalizer settings for the earbuds by using the JLab App. The EQ section has four settings: JLab signature, Knowles Preferred Response Curve, Bass Boost, plus a final option where listeners can sculpt their own preferred EQ settings.

The balanced armature drivers used in the JLab Epic Lab Edition are small enough to fit into the ear tip of the earbuds, offering a more comfortable fit without impacting the sound quality, wireless range or battery life. The balanced armatures have an exceptional treble performance, with an output up to 40kHz, which means they also gain JAS Hi-Res Audio certification.

The new Epic Lab Edition earbuds also have smart ANC to filter out unwanted sounds and they also support LDAC or AAC codecs for a higher quality sound with Android and iOS devices. The earbuds have a special USB-C dongle that supports Bluetooth LE Audio, providing lower latency and higher audio quality. The dongle works with both Mac and Windows computers.

mpirun is a wrapper around the more general mpiexec.hydra command. One can also use mpiexec.hydra, which allows for a different executable to be launched on different hosts. The command has the following format

Here global options include things like -genvall and -genv ENV_VAR value which will be passed to all MPI processes.The local options include the name of a host to run on (hostname), and options like -n to choose the number of processes to run on the host. In addition one can pass local environment variables with -env ENV_VAR value which will be passed only to the processes on that host. It is possible to run mpiexec.hydra with a configuration file, in which every line refers to a specific host, with its local host options.

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