Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

That is a good suggestion, Dana. My Prologix GPIB-to-Ethernet adapter is made in a plastic case, so it certainly could radiate if it chose to do so. I'll have to sniff around sometime while it's operating. Jeremy On Sat, Nov 18, 2017 at 5:27 PM, Dana Whitlow wrote: >

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

Beware- Many GPIB-to-Ethernet adapters are also very prolific RFI generators- learned the hard way at Arecibo. Dana On Sat, Nov 18, 2017 at 5:03 PM, Bob Bownes wrote: > > All GPIB to Ethernet adapters are not created equal. > > The NI GPIB-E is no longer supported for

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

USB Prologix works fine with pyvisa on both Mac and Windows for me - http://pyvisa.readthedocs.io/en/stable/ I am still trying to shake off memories of NI VISA - even python is better. Leo On 18 Nov 2017, at 16:14, time-nuts-requ...@febo.com wrote: > From: Tim Lister > As mentioned by others the

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

All GPIB to Ethernet adapters are not created equal. The NI GPIB-E is no longer supported for example, only the 100 & 1000. Which is very annoying to those that have one. Bob > On Nov 18, 2017, at 17:45, Bob kb8tq wrote: > > Hi > > Given all the nonsense with USB

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

Hi Given all the nonsense with USB drivers / “fake" serial chips / OS restrictions …. The ethernet solution makes a lot of sense. Bob > On Nov 18, 2017, at 4:45 PM, jimlux wrote: > > On 11/18/17 11:04 AM, Attila Kinali wrote: >> Hi, >> I have a need for a GBIP adapter

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

On 11/18/17 11:04 AM, Attila Kinali wrote: Hi, I have a need for a GBIP adapter that I can use with Linux. It shouldn't be too expensive, but I rather spend a few bucks more for ease of use. Where "ease of use" means I don't have problems with weird drivers on Linux (Windows doesn't matter at

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

On Nov 18, 2017 11:05, "Attila Kinali" wrote: Hi, I have a need for a GBIP adapter that I can use with Linux. It shouldn't be too expensive, but I rather spend a few bucks more for ease of use. Where "ease of use" means I don't have problems with weird drivers on Linux

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

The Galvant adapter appears to use a very similar protocol to the Prologix, but I'm unsure if it's exactly compatible. There have been large numbers of HP adapters on ebay - they're generally thought to be clones of varying quality. http://www.galvant.ca/#!/store

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

att...@kinali.ch said: > I have a need for a GBIP adapter that I can use with Linux. It shouldn't be > too expensive, but I rather spend a few bucks more for ease of use. Where > "ease of use" means I don't have problems with weird drivers on Linux I've been happy with the Prologix. It may not

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

I have bought a Prologix GPIB/USB controller. There is a LAN version also. The German distributor is stantronic.de. You can get mine for a limited time to see if it fits. I was able to solve my own problem via LAN w/o adapter. regards, Gerhard Am 18.11.2017 um 20:04 schrieb Attila Kinali:

Re: [time-nuts] Recommendation for cheap GBIP adapter for Linux

Someone has been selling one of these at a reasonably low price on ebay but I don't know anyone who has used it. Bob On Saturday, November 18, 2017, 11:05:09 AM PST, Attila Kinali wrote: Hi, I have a need for a GBIP adapter that I can use with Linux. It shouldn't be

[time-nuts] Recommendation for cheap GBIP adapter for Linux

Hi, I have a need for a GBIP adapter that I can use with Linux. It shouldn't be too expensive, but I rather spend a few bucks more for ease of use. Where "ease of use" means I don't have problems with weird drivers on Linux (Windows doesn't matter at all). I do not mind writing my own read-out

Re: [time-nuts] Time and frequency practical exercise 2018 late quarter; precision measure of 432mhz band Sat in Lunar Orbit

Hi > On Nov 18, 2017, at 5:38 AM, Magnus Danielson > wrote: > > Hi, > > On 11/18/2017 02:16 AM, Hal Murray wrote: >> kb...@n1k.org said: >>> Ok, 1 Hz at 437.5 MHZ is roughly 2 ppb. That is pretty much “slam dunk� >>> accuracy with a GPSDO. Much easier to

Re: [time-nuts] Time and frequency practical exercise 2018 late quarter; precision measure of 432mhz band Sat in Lunar Orbit

Orbital determination from Doppler shift is, IMHO, a far more interesting and fun STEM project than measuring an absolute frequency. And it does not require MASERs, it only requires low-grade amateur equipment. Amateur "Crowdsourcing" of orbital data goes at least as far back to ARRL collecting

Re: [time-nuts] Interpreting and Understanding Allen Deviation Results

Hi Randal, On 11/15/2017 05:12 PM, CubeCentral wrote: The results are shown here: [ https://i.imgur.com/0sMVMfk.png ] The associated .TIM files are available upon request. As mentioned before, the preferred way of doing this is to do a time interval measurement between a start and a stop

Re: [time-nuts] How good is your ADEV at 10E7 seconds? :)

On 11/18/2017 12:16 PM, Attila Kinali wrote: On Fri, 17 Nov 2017 17:54:51 -0800 Hal Murray wrote: LIGO only works for roughly the audio spectrum. At the low and high ends, the noise goes up. Lots of people are working on how to build gear that will work at other

Re: [time-nuts] Time and frequency practical exercise 2018 late quarter; precision measure of 432mhz band Sat in Lunar Orbit

On Fri, 17 Nov 2017 13:26:18 -0800 Patrick Barthelow wrote: > I am a member of Team Alpha Cubesat. We and some other teams are in the > NASA CUBEQUEST challenge. Launching next year a 6u cubesat to lunar > orbit. I am not an expert at the freq measurement aspect of

Re: [time-nuts] How good is your ADEV at 10E7 seconds? :)

On Fri, 17 Nov 2017 17:54:51 -0800 Hal Murray wrote: > LIGO only works for roughly the audio spectrum. At the low and high ends, > the noise goes up. Lots of people are working on how to build gear that will > work at other wavelengths. I was wondering about those

Re: [time-nuts] How good is your ADEV at 10E7 seconds? :)

Approximately 6% of pulsars "glitch" and yes these (typically young) pulsars are poor time standards. The glitching is most likely caused by unpinning of vortices in the superfluid outer core. This causes a momentum transfer from the core to the crust - and a speed-up. The Vela pulsar (freq of ~11

Re: [time-nuts] Time and frequency practical exercise 2018 late quarter; precision measure of 432mhz band Sat in Lunar Orbit

Hi, On 11/18/2017 02:16 AM, Hal Murray wrote: kb...@n1k.org said: Ok, 1 Hz at 437.5 MHZ is roughly 2 ppb. That is pretty much “slam dunk� accuracy with a GPSDO. Much easier to obtain and set up in a school environment. The key will be orbit estimation for the +/- doppler part of it.