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Date
Re: Serial port speed
It's a usb device. Ignore the speed and just connect to the usb port the SA is connected to.? Many users use teraterm.? On Sun, 23 Aug 2020 at 7:13 PM, EB4APL<eb4apl@...> wrote:
By Larry Rothman · #709 ·
Re: Serial port speed
9600 baud command prompt:? ? ch> Dave W6ZL
By David W6ZL · #708 ·
Serial port speed
Hi, I'm trying to send console commands to the tinySA, but I don't know which speed should I use. Also, I have seen ch> and > as the command preamble. Which one is the right one? Thank
By EB4APL · #707 ·
Re: WARNING: Measuring the spectral purity of a transmitter
Martin, My manager called me into his office one time inquiring about why we needed to order 20watt attenuators period
By hwalker · #706 ·
Re: Tracking Marker
On Sat, Aug 22, 2020 at 08:09 AM, Erik Kaashoek wrote: 1. So in MARKER/MARKER SEARCH/ add an option GLOBAL MAXIMUM? [A more conventional term would be *MARKER PEAK* but, as Kurt once said, the tinySA
By hwalker · #705 ·
Re: Tracking Marker
Forgot to ask. The zero Hz peak can not be ignored in a GLOBAL MAXIMUM search as it is unclear how far to ignore (starting from 0Hz). OK?
By Erik Kaashoek · #704 ·
Re: Tracking Marker
So in MARKER/MARKER SEARCH/ add an option GLOBAL MAXIMUM? If you do a marker search on a tracking marker it automatically becomes a normal marker. Is that behavior OK?
By Erik Kaashoek · #703 ·
Re: WARNING: Measuring the spectral purity of a transmitter
Having used expensive test equipment throughout my professional career, I learnt that it was always a good idea to keep a low power 20dB attenuator connected to the input of a spectrum analyser or
By Martin · #702 ·
Re: Tracking Marker
Thanks for the explanation.? I'll add it to my notes.? It also explains why max->right search places the marker at the end of the trace. My only comment is that the behavior makes sense for a
By hwalker · #701 ·
Re: Tracking Marker
I added some explanation to the wiki: https://tinysa.org/wiki/pmwiki.php?n=Main.MARKERTYPE In short. If no maximum (at least NOISE LEVEL above the surrounding minima) is found the tracking marker is
By Erik Kaashoek · #700 ·
Tracking Marker
Erik, A question came up while I was demonstrating the tinySA to some club members. The tracking marker is supposed to track the peak of the displayed signal but, as shown in the following screen
By hwalker · #699 ·
Locked Re: They arrived too!
Hi all still waiting for my SA but hopefully it will ship soon. Can't wait really as got stuck in UK at the moment so set up lab here but no equipment to speak of so scratching about with what I
By Barry Mayson · #698 ·
Re: WARNING: Measuring the spectral purity of a transmitter
Er, yes. ?I was not the person in danger of connecting a delicate piece of equipment to a transmitter, just offering some alternative strategies. I did not spend my working life with peofessional/
By Stephen Laurence · #697 ·
Locked Re: They arrived too!
Hi Rachel, Probably I didn't explained it well, I don't have any problem with paying custom duties (as I also pay all my taxes). The actual amount was 10€ and it was according to the rules. But my
By EB4APL · #696 ·
Re: WARNING: Measuring the spectral purity of a transmitter
You've apparently never used a signal generator from HP or Rohde & Schwarz and likely others.? Many of them have reverse power protection up to 50 watts, some up to 100 watts.? And you've apparently
By Jim Allyn - N7JA · #695 ·
Re: WARNING: Measuring the spectral purity of a transmitter
I usually use a 30dB high power attenuator for a watt to milliwatt conversion, with an additional 10 or 20 dB low power attenuator for power levels of 10 or 100 watts respectively. Gary W9TD
By Gary W9TD · #694 ·
Re: WARNING: Measuring the spectral purity of a transmitter
I mever nake mistteacks... 73, Bill KU8H bark less - wag more
By Bill Cromwell · #693 ·
Re: WARNING: Measuring the spectral purity of a transmitter
You better use the built in attenuator for testing the source of the harmonics
By Erik Kaashoek · #692 ·
Re: WARNING: Measuring the spectral purity of a transmitter
If you have extra attenuators (big if), a simple test is to measure the harmonic with and without one.? If the harmonic changes level by a value much different than the attenuator value, you're
By Brent DeWitt · #691 ·
Re: WARNING: Measuring the spectral purity of a transmitter
Then you have an unrealistic view of human nature. Humans, at times, make mistakes. -- John AE5X https://ae5x.blogspot.com/
By John AE5X · #690 ·