Re: [time-nuts] PM6680 or 53131A for TimePod
Bob, The single-shot does not improve, it's 500 ps, but the averaging of N samples give you that result. The 53131 does similar tricks. Cheers, Magnus On 11/17/2015 02:27 AM, Bob Camp wrote: Hi At leas on the spec sheet I found, both counters have a single shot of 500 ps. The 6680 “improves” as the averaging goes up. http://isurplus.com.au/specifications/Philips%20PM6680%20Specifications.pdf Section 13-8 has a lot of “500 ps / sqrt(N)" in it. If N=1 (single shot) you get 500 ps. HP stops the process when resolution and random bounce are roughly equal. Fluke gives you another bit of noise to possibly average out under some conditions. At least the way I read the data sheets, the two counters are very similar. Bob On Nov 15, 2015, at 6:10 PM, Scott McGrath wrote: Thanks Bob I'm using the actual time pod for paying activities. This would be a counter for time nuttery using the time pod software. In those cases Where I don't want to fire up the 5071. I'm familiar with the Keysight counters and I have a lot of them into the high Ghz ranges The 53131 is spec'd to 500ps and the 6680 is spec'd at 250ps I've also been leaning in the 53131 direction but I'd like to have the best tool for the job at hand Content by Scott Typos by Siri On Nov 15, 2015, at 1:59 PM, Bob Camp wrote: Hi I guess the first question would be - If you have a Time Pod, what do you need a counter for? Based on a guess that you need extended frequency range, either would do pretty well. My vote would go to the HP for a couple of reasons: 1) It’s more broadly supported in terms of driver software (which may or may not matter to you). 2) It’s a more common item on the auction sites, so parts are easier to find. 3) It shares some parts (like the power supply) with the (cheaper) 53181 No those are not great big reasons to go for one over the other. They are very similar devices. One has an LCD that has a finite life. The other has a VFD that also has a finite life. Both are custom, that’s a tie. Some like the command (button) arrangement on one over the other. I think it’s more a “what are you used to” thing than anything else. On the 53131 you need to hit the Run button in some cases. I have not watched the prices on the Fluke. I have kept track of the 53131’s. A “good price” on one these days is below $600 ( = you may need to shop a bit, but they do show up). Bob On Nov 15, 2015, at 1:45 PM, Scott McGrath wrote: Hi Which counter would be best for use with time pod I have a chance to buy each at a reasonable prices i.e. < 1000 US Thanks in advance Scott Content by Scott Typos by Siri ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
5371a is a TI analyzer The time pod itself is used for paying work so it's not available for time nuttery. Content by Scott Typos by Siri > On Nov 16, 2015, at 6:20 AM, Chris Caudle wrote: > >> On Mon, November 16, 2015 12:42 am, Scott McGrath wrote: >> More of a slip as I've noted I have a time pod for work but I'd like to >> add a small counter for time nuttery as power is not cheap in NE so >> running the 5371A for long runs can get expensive > > I don't follow. Why would you not use the TimePod with a lower power > reference? It isn't like a TimePod only works with a cesium clock as the > reference source. > > -- > Chris Caudle > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
Hi At leas on the spec sheet I found, both counters have a single shot of 500 ps. The 6680 “improves” as the averaging goes up. http://isurplus.com.au/specifications/Philips%20PM6680%20Specifications.pdf Section 13-8 has a lot of “500 ps / sqrt(N)" in it. If N=1 (single shot) you get 500 ps. HP stops the process when resolution and random bounce are roughly equal. Fluke gives you another bit of noise to possibly average out under some conditions. At least the way I read the data sheets, the two counters are very similar. Bob > On Nov 15, 2015, at 6:10 PM, Scott McGrath wrote: > > Thanks Bob > > I'm using the actual time pod for paying activities. This would be a counter > for time nuttery using the time pod software. In those cases Where I don't > want to fire up the 5071. > > I'm familiar with the Keysight counters and I have a lot of them into the > high Ghz ranges > > The 53131 is spec'd to 500ps and the 6680 is spec'd at 250ps > > I've also been leaning in the 53131 direction but I'd like to have the best > tool for the job at hand > > Content by Scott > Typos by Siri > >> On Nov 15, 2015, at 1:59 PM, Bob Camp wrote: >> >> Hi >> >> I guess the first question would be - If you have a Time Pod, what do you >> need a counter for? >> >> Based on a guess that you need extended frequency range, either would do >> pretty well. My vote >> would go to the HP for a couple of reasons: >> >> 1) It’s more broadly supported in terms of driver software (which may or may >> not matter to you). >> >> 2) It’s a more common item on the auction sites, so parts are easier to find. >> >> 3) It shares some parts (like the power supply) with the (cheaper) 53181 >> >> No those are not great big reasons to go for one over the other. They are >> very similar devices. One >> has an LCD that has a finite life. The other has a VFD that also has a >> finite life. Both are custom, that’s >> a tie. Some like the command (button) arrangement on one over the other. I >> think it’s more a “what >> are you used to” thing than anything else. On the 53131 you need to hit the >> Run button in some cases. >> >> I have not watched the prices on the Fluke. I have kept track of the >> 53131’s. A “good price” on one >> these days is below $600 ( = you may need to shop a bit, but they do show >> up). >> >> Bob >> >>> On Nov 15, 2015, at 1:45 PM, Scott McGrath wrote: >>> >>> Hi >>> >>> Which counter would be best for use with time pod I have a chance to buy >>> each at a reasonable prices i.e. < 1000 US >>> >>> Thanks in advance Scott >>> >>> Content by Scott >>> Typos by Siri >>> ___ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
Hi, PM6681's turn up at quite a good price too, and you get a lot of extras over the 6680 - does anyone know if Timelab will work with a 6681? Angus. On Sun, 15 Nov 2015 15:10:42 -0800, you wrote: >Thanks Bob > >I'm using the actual time pod for paying activities. This would be a counter >for time nuttery using the time pod software. In those cases Where I don't >want to fire up the 5071. > >I'm familiar with the Keysight counters and I have a lot of them into the high >Ghz ranges > >The 53131 is spec'd to 500ps and the 6680 is spec'd at 250ps > >I've also been leaning in the 53131 direction but I'd like to have the best >tool for the job at hand > >Content by Scott >Typos by Siri > >> On Nov 15, 2015, at 1:59 PM, Bob Camp wrote: >> >> Hi >> >> I guess the first question would be - If you have a Time Pod, what do you >> need a counter for? >> >> Based on a guess that you need extended frequency range, either would do >> pretty well. My vote >> would go to the HP for a couple of reasons: >> >> 1) Its more broadly supported in terms of driver software (which may or may >> not matter to you). >> >> 2) Its a more common item on the auction sites, so parts are easier to find. >> >> 3) It shares some parts (like the power supply) with the (cheaper) 53181 >> >> No those are not great big reasons to go for one over the other. They are >> very similar devices. One >> has an LCD that has a finite life. The other has a VFD that also has a >> finite life. Both are custom, thats >> a tie. Some like the command (button) arrangement on one over the other. I >> think its more a what >> are you used to thing than anything else. On the 53131 you need to hit the >> Run button in some cases. >> >> I have not watched the prices on the Fluke. I have kept track of the >> 53131s. A good price on one >> these days is below $600 ( = you may need to shop a bit, but they do show >> up). >> >> Bob >> >>> On Nov 15, 2015, at 1:45 PM, Scott McGrath wrote: >>> >>> Hi >>> >>> Which counter would be best for use with time pod I have a chance to buy >>> each at a reasonable prices i.e. < 1000 US >>> >>> Thanks in advance Scott >>> >>> Content by Scott >>> Typos by Siri >>> ___ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >___ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
On Mon, November 16, 2015 12:42 am, Scott McGrath wrote: > More of a slip as I've noted I have a time pod for work but I'd like to > add a small counter for time nuttery as power is not cheap in NE so > running the 5371A for long runs can get expensive I don't follow. Why would you not use the TimePod with a lower power reference? It isn't like a TimePod only works with a cesium clock as the reference source. -- Chris Caudle ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
Why would you want to use a 150 ps 53131 instead of a counter/timer like the Agilent/Keysight 53230A that provides 20 ps resolution? The TimePod my have better noise specs but it is a really dedicated, specific-use device. Larry On 11/15/2015 10:42 PM, Scott McGrath wrote: More of a slip as I've noted I have a time pod for work but I'd like to add a small counter for time nuttery as power is not cheap in NE so running the 5371A for long runs can get expensive Content by Scott Typos by Siri On Nov 15, 2015, at 4:08 PM, Chris Caudle wrote: On Sun, November 15, 2015 3:59 pm, Bob Camp wrote: I guess the first question would be - If you have a Time Pod, what do you need a counter for? Or was the original question a slip, and was supposed to be which counter is good for use with TimeLab software? -- Chris Caudle ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
More of a slip as I've noted I have a time pod for work but I'd like to add a small counter for time nuttery as power is not cheap in NE so running the 5371A for long runs can get expensive Content by Scott Typos by Siri > On Nov 15, 2015, at 4:08 PM, Chris Caudle wrote: > >> On Sun, November 15, 2015 3:59 pm, Bob Camp wrote: >> I guess the first question would be - If you have a Time Pod, what do you >> need a counter for? > > Or was the original question a slip, and was supposed to be which counter > is good for use with TimeLab software? > > -- > Chris Caudle > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
Thanks Bob I'm using the actual time pod for paying activities. This would be a counter for time nuttery using the time pod software. In those cases Where I don't want to fire up the 5071. I'm familiar with the Keysight counters and I have a lot of them into the high Ghz ranges The 53131 is spec'd to 500ps and the 6680 is spec'd at 250ps I've also been leaning in the 53131 direction but I'd like to have the best tool for the job at hand Content by Scott Typos by Siri > On Nov 15, 2015, at 1:59 PM, Bob Camp wrote: > > Hi > > I guess the first question would be - If you have a Time Pod, what do you > need a counter for? > > Based on a guess that you need extended frequency range, either would do > pretty well. My vote > would go to the HP for a couple of reasons: > > 1) It’s more broadly supported in terms of driver software (which may or may > not matter to you). > > 2) It’s a more common item on the auction sites, so parts are easier to find. > > 3) It shares some parts (like the power supply) with the (cheaper) 53181 > > No those are not great big reasons to go for one over the other. They are > very similar devices. One > has an LCD that has a finite life. The other has a VFD that also has a finite > life. Both are custom, that’s > a tie. Some like the command (button) arrangement on one over the other. I > think it’s more a “what > are you used to” thing than anything else. On the 53131 you need to hit the > Run button in some cases. > > I have not watched the prices on the Fluke. I have kept track of the 53131’s. > A “good price” on one > these days is below $600 ( = you may need to shop a bit, but they do show > up). > > Bob > >> On Nov 15, 2015, at 1:45 PM, Scott McGrath wrote: >> >> Hi >> >> Which counter would be best for use with time pod I have a chance to buy >> each at a reasonable prices i.e. < 1000 US >> >> Thanks in advance Scott >> >> Content by Scott >> Typos by Siri >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
On Sun, November 15, 2015 3:59 pm, Bob Camp wrote: > I guess the first question would be - If you have a Time Pod, what do you > need a counter for? Or was the original question a slip, and was supposed to be which counter is good for use with TimeLab software? -- Chris Caudle ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] PM6680 or 53131A for TimePod
Hi I guess the first question would be - If you have a Time Pod, what do you need a counter for? Based on a guess that you need extended frequency range, either would do pretty well. My vote would go to the HP for a couple of reasons: 1) It’s more broadly supported in terms of driver software (which may or may not matter to you). 2) It’s a more common item on the auction sites, so parts are easier to find. 3) It shares some parts (like the power supply) with the (cheaper) 53181 No those are not great big reasons to go for one over the other. They are very similar devices. One has an LCD that has a finite life. The other has a VFD that also has a finite life. Both are custom, that’s a tie. Some like the command (button) arrangement on one over the other. I think it’s more a “what are you used to” thing than anything else. On the 53131 you need to hit the Run button in some cases. I have not watched the prices on the Fluke. I have kept track of the 53131’s. A “good price” on one these days is below $600 ( = you may need to shop a bit, but they do show up). Bob > On Nov 15, 2015, at 1:45 PM, Scott McGrath wrote: > > Hi > > Which counter would be best for use with time pod I have a chance to buy each > at a reasonable prices i.e. < 1000 US > > Thanks in advance Scott > > Content by Scott > Typos by Siri > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] PM6680 or 53131A for TimePod
Hi Which counter would be best for use with time pod I have a chance to buy each at a reasonable prices i.e. < 1000 US Thanks in advance Scott Content by Scott Typos by Siri ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.