开云体育

hugen, per your GitHub info: "This is my attemp to port the STM32F303CCT6 to this popular NanoVNA project. The benefits are larger SRAM 40KB from 16KB, larger flash 256KB from 128KB, faster CPU clock

Establishing a "measurement plane" makes the impedance or admittance displayed on the VNA valid at that specific point. For example, you want to know what the impedance is at the input of some device.

The easiest one to explain is using a simple random length of RG316 (PTFE) cable terminated in sma (instrument end) at one end and bare wires the other (DUT end). If we want to normalize the cable

I have two NanoVNAs here that both seem to have the same problem in that they very often don't power on. The first NanoVNA is a white/gecko model (2 traces firmware, micro-USB, official ttrftech

VNA works by measuring signals, then calculating based on differences from known references namely open, short and 50 Ohms. So long as there are measurable differences among those references, then

I've been looking through posts here, and other internet references, to try to understand the meaning of the term "measurement reference plane." My general understanding is that this refers to the

Great question I was also just wondering. And nice to have the answer, thanks Larry. -- Regards, Chris

When you say "I will have a copy", do you mean you were given a photo copy of the article, or you personally made a photo copy of the article? OR, are you saying you paid for the QEX and are expecting

TDR

Yes, you are correct. At HF, it doesn't much matter how you connect the 50 ohm load. I have two 100 ohm carbon resistors in parallel that measure 50.1 ohms that I connect with alligator clips. For

You can calibrate your measurement reference plane at a number of places. You can do your calibration at the SMA terminals of the NanoVNA. You can do your calibration at the ends of coax cables

[#96] : The Ultimate Criterion for Endless Reliable VNA Comparisons Hello, - - - - - - - - - - - - - (c) gin&pez@arg (cc-by-4.0) 2019 : start - - - - - - - - - - - Allow us, please, to announce that

This is one of the big advantages of a small, self contained, unit. One can connect it to a balanced load or coax with little influence from surroundings ofr connection to a power source. During CAL.

For sale: Virtually new (2 weeks old) nanoVNA-F from the designer, not a clone. Working fine with VNA-SAVER under WIN7. $120 INCLUDES SHIPPING. SOLT components included along with the plastic snap

For sale: Virtually new (2 weeks old) nanoVNA-F from the designer, not a clone. Working fine with VNA-SAVER under WIN7. $120 INCLUDES SHIPPING. SOLT components included along with the plastic snap

Or get one of those prepaid GreenDot Visa cards and just put in enough balance to cover your purchase needs. They supposedly work exactly the same as a regular card, albeit the additional overhead.

Hi, any chance you could direct us to one of the ebay sellers that already have v3.4? Earlier I sent a message to Maggie inquiring about this but have not yet gotten a response, and not even sure she

erik, interesting video, which I will review at length another time. For the moment, I am trying to get a handle on an actual, physical system, to give myself a framework for understanding. The

Hugen, Looking forward to this version. When do you think it will be available? I'm trying to keep track of each version. Mike N2MS

============================================================== Given hugen's history on this forum, he generally doesn't start making announcements until he feels his final prototype is ready for