Re: [time-nuts] NEO-M8N vs. NEO-M8T

2018-05-21 Thread Scott Newell
At 12:57 PM 5/21/2018, Gary E. Miller wrote: As the manual says: "Quantization error of time pulse (not supported for the FTS product variant)." The NEO-M8T is an FTS product. Are you sure about that? I thought the M8T was timing, and the M8F was FTS. Please check your firmware version strin

Re: [time-nuts] NEO-M8N vs. NEO-M8T

2018-05-20 Thread Scott Newell
At 09:23 PM 5/20/2018, Gary E. Miller wrote: I do not see the keyword 'sawtooth' in the u-blox 8 doc. Can I buy a clue? UBX-TIM-TP, "Time Pulse Timedata". Look for "Quantization error of time pulse". I'm seeing this on page 359 of the ublox 8 receiver description/protocol spec book. -- ne

Re: [time-nuts] RINEX for Android

2018-04-12 Thread Scott Newell
At 05:46 AM 4/12/2018, jimlux wrote: It turns out that some of the newer Android phones support an API which returns raw GNSS data and that can be logged to a file in RINEX format. There's a few apps out there that do this although I've not tried it (my Samsung S6 doesn't have the right hardwa

Re: [time-nuts] GPS System Message (was: TV Signals as a frequency reference)

2018-03-31 Thread Scott Newell
At 01:21 PM 3/31/2018, Mark Sims wrote: Or on the GPS/GNSS signals... I was verifying Lady Heather's support for the old SV6/Palisade/Acutime receivers and came across a mention of the "GPS System Message" command. It is requested by TSIP packet 0x28 and returns I dug into this a while bac

Re: [time-nuts] Favorite counters (current production)?

2017-11-15 Thread Scott Newell
At 06:44 AM 11/11/2017, Tom Van Baak wrote: So, Scott, give the FS740 a try. See if SRS will loan you one for a few weeks and report back to us on what you think. I've sent a couple of emails to i...@thinksrs.com with no reply yet. If anyone has a sales contact at SRS, please pass it along.

Re: [time-nuts] Favorite counters (current production)?

2017-11-15 Thread Scott Newell
At 12:39 PM 11/11/2017, Tom Knox wrote: The FS740 is interesting. Obviously it has a lot going for it, but what appears to be missing is graphic data display capabilities which would simply be a few line of code. Perhaps I missed something skimming through the manual. I don't think you missed

[time-nuts] Favorite counters (current production)?

2017-11-10 Thread Scott Newell
What current production freq counters do people like for general time-nuttery these days? There's a chance I can get a decent counter for work, so I'm looking for suggestions. Bonus points for fanless. Don't need anything past 200 MHz or so. Prefer ethernet over USB or GPIB. The SR620 looks to

Re: [time-nuts] Fw: Skytraq / GPS Almanac

2017-09-26 Thread Scott Newell
At 05:20 PM 9/26/2017, Tom Van Baak wrote: An interesting note from Said, below... I've sent a couple of queries out to GPS professionals. Feel free to comment if you have concrete information that would help. Also, if during the past week any of you were logging almanacs or continuously recordi

Re: [time-nuts] Some eclipse data

2017-08-22 Thread Scott Newell
At 10:35 PM 8/21/2017, Mike Garvey wrote: thanks Scott... where are you located? The weather data is from western Arkansas. -- newell N5TNL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailma

[time-nuts] Some eclipse data

2017-08-21 Thread Scott Newell
We got about to about 90% here. My most interesting data so far is the minute-by-minute weather data: http://n5tnl.com/time/eclipse_2017/index.html I've got raw data from two GPS units (uBlox LEA-6T), but I don't know what to do with it. Tried to set up and capture WWVB, but it looks pretty ra

Re: [time-nuts] Thunderbolt question

2017-08-04 Thread Scott Newell
At 12:13 AM 8/4/2017, Chris Waldrup wrote: So no voltage out to antenna. I do have one of those 6V max polyphasers but we did get some really close strikes recently. Oh. As someone who lost a tbolt to lightning last year, I feel your pain. I've had to change the Oncore UT Plus receiver board

[time-nuts] Anyone still running a Soekris net45XX for NTP?

2017-05-26 Thread Scott Newell
I've come up with a couple of old net4521 boards, and I'm looking for advice on what OS to run. They're 486 class CPUs, so I doubt anything recent will run. If you've still got one running, please let me what OS and release you're on. Thanks! -- newell N5TNL ___

Re: [time-nuts] WTB: GPSDO

2017-03-24 Thread Scott Newell
At 03:52 PM 3/22/2017, Nick Sayer via time-nuts wrote: Just a little side query… For those using one of these sorts of splitters with a Thunderbolt, have you seen anything odd? My thunderbolt *insists* on being on the DC Pass port. If you put it on a DC Mine doesn't. I just swapped ports arou

[time-nuts] TICC update?

2017-01-16 Thread Scott Newell
I see that my credit card has been charged. Is that a hint that the TICC project is moving along? Should I start gathering up cables and SMA adapters? -- newell N5TNL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www

[time-nuts] WWVB leap

2016-12-31 Thread Scott Newell
Decent signal tonight. Looks like they got the DUT1 bits (from -0.4 to +0.6 s), the leap year bits, and the leap second bits switched over on schedule, too. Sat Dec 31 23:59:00 2016 | | X Sat Dec 31 23:59:01 2016 |

[time-nuts] Leap Second Smear Monitoring

2016-12-31 Thread Scott Newell
I'm trying to watch the google NTP server leap second smear. This page should update once/minute with my latest data. http://www.n5tnl.com/time/leap_2016/index.html Sorry about the coarse resolution--I've set another monitor station to poll more often and I'll try and append that graph shortly

Re: [time-nuts] Lightning 1, tbolt 0.

2016-05-11 Thread Scott Newell
At 03:19 PM 3/31/2016, Ryan Stasel wrote: I do know 74AC04’s are horribly prone to ESD damage… replaced more than a few when working on older bench multimeters. You may need to get in there and probe a bit. In my case, my bad RS232 driver was drawing about 350mA and getting VERY hot, VERY fa

[time-nuts] Cheap LEA-6T [was: Re: Precise Time transfer and relative position over ashort baseline]

2016-04-11 Thread Scott Newell
At 11:46 AM 4/11/2016, Tom Van Baak wrote: Another way might be to use single-channel common view GPS. I've not checked recently to see if 100 ps is possible over a 1 km baseline. If so that would be a less expensive solution. Someone should dig into the RINEX mode of the ublox 6T. It's on my l

Re: [time-nuts] Lightning 1, tbolt 0.

2016-03-31 Thread Scott Newell
At 08:13 AM 3/31/2016, paul swed wrote: Its just that a strike that close creates one heck of a pulse. Further todays homes may have a lot more wire in them phone cable power and ethernet. So lots of ways to carry the pulse. Agreed. The only tbolt cables attached, serial and PPS, ran around t

[time-nuts] Lightning 1, tbolt 0.

2016-03-30 Thread Scott Newell
10 MHz output active, no PPS, no comm with LH. My tbolt was disconnected from the outdoor GPS antenna today, and so I wasn't too concerned when we had a strike in the backyard this morning. The PC attached to the serial port and PPS output died, and that cable was fairly long, so I guess that'

Re: [time-nuts] When does NIST change to DST?

2016-03-15 Thread Scott Newell
I've been recording the WWVB timecode output from a salvaged walmart clock module, so I examined the recent changes at bits 57 and 58. Looks like they got it exactly right. Here's the minute before and after. Midnight Saturday (UTC), they turned on bit 57 to indicate DST begins Sunday: Sat Mar

Re: [time-nuts] Trimble Thunderbolt error

2016-02-14 Thread Scott Newell
At 12:59 AM 2/14/2016, Hal Murray wrote: newell+timen...@n5tnl.com said: > My tbolt shows a massive loss of sats starting around 00:15 through 01:56. Where are you located? Arkansas. I have crappy antennas so holdover is common. It's been good weather Outdoor antenna, but so-so placemen

Re: [time-nuts] Trimble Thunderbolt error

2016-02-13 Thread Scott Newell
At 07:34 PM 2/13/2016, Rob S. wrote: Content-Transfer-Encoding: 7bit Hello Group, A friend about 2Km up the road from me and I both run the Trimble Thunderbolt GPSDO. For a few years now they have both worked flawlessly. Around 1/2 an hour ago ( I wasn't in front of mine when it happened ) at

Re: [time-nuts] GPS jumps of -13.7 us?

2016-01-26 Thread Scott Newell
At 09:12 AM 1/26/2016, Paul Boven wrote: Has anyone else seen GPS time jump by -13.7 usec today? My tbolt locked ntp server saw an unusual spike of about that magnitude just after 00:00 1-26-2016 UTC. (The bump at 4 seconds is from the daily backup run.) -- newell N5TNL __

Re: [time-nuts] Springer textbooks >10 years old now available for download as PDF at no cost

2015-12-29 Thread Scott Newell
At 10:00 PM 12/29/2015, Bob Camp wrote: DSP by a legit Time Nut: http://link.springer.com/book/10.1007/978-1-4757-4990-8 How about xtal osc and temp compensation by same dude: http://link.springer.com/book/10.1007/978-94-011-6056-8 -- newell N5TNL ___

Re: [time-nuts] Springer textbooks >10 years old now available for download as PDF at no cost

2015-12-29 Thread Scott Newell
At 10:48 AM 12/29/2015, Bob Camp wrote: Is there a practical way to download the entire book rather than doing 60 individual downloads for each fragment of the text? Sure, click the "Download book" link? (OK, I had to create one of 'em.) > The Quantum Beat > http://link.springer.com/book/1

Re: [time-nuts] wtd: WWVB info

2015-08-05 Thread Scott Newell
At 12:40 PM 8/5/2015, Graham / KE9H wrote: Content-Transfer-Encoding: 8bit There are several high end audio Analog to Digital Data converters that will clock at 192 kHz, ~23 bits ENOB, which puts a 60 kHz signal sweetly in the first Nyquist zone. Typical NF of the front end of the data converter

Re: [time-nuts] wtd: WWVB info

2015-08-04 Thread Scott Newell
At 05:43 PM 8/4/2015, Donald wrote: I have been looking into WWVB receivers. I see that the sources I had purchased from a few years ago are no longer available(in the US). I've bought modules and antennas recently from Germany and the UK: http://www.pvelectronics.co.uk/index.php?main_page=i

Re: [time-nuts] Leap second results: LH screenshot

2015-07-01 Thread Scott Newell
At 07:15 AM 7/1/2015, J. L. Trantham wrote: Interestingly, the time is 23:59:60 but the UTC ofs is still 16. I guess it increments to 17 at the end of that operation, i.e., at 00:00:00. I just pulled the next screenshot to check, and you're correct: https://www.n5tnl.com/time/leap_2015/tbolt_

Re: [time-nuts] Leap second results: WWVB

2015-07-01 Thread Scott Newell
At 09:23 PM 6/30/2015, Tom Van Baak wrote: That's a nice WWVB result. Yes, the triple marker pulse looks is correct for a positive leap second. What did you use for a receiver? The receiver module and ferrite bar antenna from a Westclox 70026 desktop 'atomic clock', as available from Walmart

[time-nuts] Leap second results: WWVB

2015-06-30 Thread Scott Newell
My linux parallel port WWVB 'scope got a bit confused at the leap second: Tue Jun 30 23:58:59 2015 | | X Tue Jun 30 23:59:00 2015 | | X Tue Jun 30 23:59:01 2015 | -

[time-nuts] Leap second results: LH screenshot

2015-06-30 Thread Scott Newell
The "/nd=1sr" command made this capture a piece of cake: http://www.n5tnl.com/time/leap_2015/tbolt_leap.gif ___ 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 in

Re: [time-nuts] Some specs for MTI Millren 260 OXCOs

2014-10-22 Thread Scott Newell
At 04:20 PM 10/22/2014, Alexander Pummer wrote: may I get some copy of that datasheet? I don't have the correct datasheet. The seller has a catalog page, but it doesn't have specs for the non-EFC unit he's selling: http://www.excesssolutions.com/cgi-bin/item/ES6542 http://www.excesssolution

Re: [time-nuts] Some specs for MTI Millren 260 OXCOs

2014-10-22 Thread Scott Newell
At 03:43 PM 10/22/2014, Dave M wrote: Content-Transfer-Encoding: 7bit I contacted one of the MTI Milliren marketing guys a few days ago, and got some specs on the MTI model 260-0624C and 260-0544C OXCOs that are currently Be careful. I bought a couple of those $15 MTI 260-0544-C from a surplu

Re: [time-nuts] Time-Nuts Digests displays strange...

2014-08-29 Thread Scott Newell
At 11:24 AM 8/29/2014, Charles Steinmetz wrote: Burt wrote: Starting with time-nuts Digest, Vol 121, Issue 70, all of the posts in a digest are running together with no breaks between individual posts, just one long paragraph. It's not just digests, I have the same problem since the list s/

[time-nuts] Is this DOCXO an SC or AT cut rock?

2014-08-10 Thread Scott Newell
I'm curious if an OCXO has an SC or AT cut crystal in it. There's no EFC, so I can't measure sensitivity. I did measure the frequency change from cold startup, thinking that an SC cut would stabilize quicker than an AT. I don't have a good AT OCXO to compare against, but I do have a Morion MV89

Re: [time-nuts] temperature sensor

2014-07-21 Thread Scott Newell
At 11:48 AM 7/21/2014, Chris Albertson wrote: A better solution is to use a tachometer fan. Then the controller does not set the fan voltage but sets the fan speed. there are still extra pins on My thought exactly. I have not tried it, but it seems like this would also automatically restart

Re: [time-nuts] CW12-TIM

2014-07-14 Thread Scott Newell
At 04:09 PM 7/14/2014, saidj...@aol.com wrote: I think we need to have a "Time Nuts For Dummies" article written that takes J. Vig's writing and puts it into much less of a technically rigorous And maybe a recommended list of simple experiments that new time-nuts can perform. -- newell N5

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-07-04 Thread Scott Newell
At 07:23 AM 7/4/2014, Bob Camp wrote: There is a bunch of stuff on the Wentzel site about their double wall mini-test chambers. It's probably the best approach to the gradient issue. You still have a gradient around the inner chamber / box, but it's consistent. You eliminate the coupling of th

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-06-29 Thread Scott Newell
At 11:01 AM 6/29/2014, Chris Albertson wrote: Scott, Could I ask you to post that "C crap" someplace? Would save me and others some time. It was posted back in 2012: http://n5tnl.com/time/fe-5680a/control/fe5680_logger.c Beware that the comments may be inaccurate. We now know more about the

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-06-28 Thread Scott Newell
At 04:32 AM 6/28/2014, wb6bnq wrote: monitoring process ? In other words have you traced out the connections to see what is driving the pin you think is the temperature input ? No. I've only traced back from the ADC input to the voltage divider. The next big question is have you monitored t

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-06-27 Thread Scott Newell
At 10:40 PM 6/27/2014, Scott Newell wrote: to pin 4 of the 4 channel 12 bit ADC. Command 0x22 returns the ADC readings Doh! Correction: command 0x5A reads the ADC, command 0x22 reads the DDS tuning words. Sorry for the confusion. -- newell N5TNL

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-06-27 Thread Scott Newell
At 10:03 PM 6/27/2014, Chris Albertson wrote: So the FE5680A will actually change the DDS tuning word based on an internal temperature sensor? It appears so. (Again, assuming it's actually a temperature sensor. I guess it could be measuring heater current?) on how it works. Does the FE568

[time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-06-27 Thread Scott Newell
Bert asked me to send an update on the FE-5680 tempco mod progress. It appears that the FE-5680A temperature signal (or maybe it's really a current sense signal?) can be disabled by removing a single 10k 0805 surface mount resistor. Using Elio Corbolante's terrific high-res scans, I've noted

Re: [time-nuts] New NIST Time Code to Boost Reception for Radio-Controlled Clocks

2014-05-31 Thread Scott Newell
At 04:23 PM 5/31/2014, paul swed wrote: And though first run chips were available they are not to us unless we want 1000 of them. Also pricing is unclear. If they don't have distribution set up yet, I can understand 1k min orders...but no samples? That said yes the intent is to receive tim

Re: [time-nuts] WWVB paper in May 2014 IEEE communications...

2014-05-31 Thread Scott Newell
At 08:01 AM 5/31/2014, Bob Camp wrote: Hi Well that's a bit more information. We seem to be missing the deployment schedule on the other new modulation formats. I kind of doubt that the watch and clock guys are going to start the fabs turning out millions of chips until they can test all the

Re: [time-nuts] ARM boards for low-cost GPSDOs

2014-04-10 Thread Scott Newell
At 04:38 PM 4/10/2014, Hal Murray wrote: Does anybody have a favorite low-cost ARM board? I'm looking for a simple I'm using one of the TI Tiva C series Launchpads for my ovenized PC xtal project. ~$13, 80 MHz Cortex M4F (f=floating point), 256 kB flash, 32kB ram, 12 bit ADCs, 32 bit timers

Re: [time-nuts] NTP and Windows 7

2014-03-27 Thread Scott Newell
At 08:59 AM 3/27/2014, John Nelson wrote: there something about Windows 7 that degrades the performance of NTP? Or is there anything subtle I can check? I've had some luck on win7 by setting maxpoll to 8. -- newell ___ time-nuts mailing list -- t

Re: [time-nuts] 5370 processor boards available

2014-02-27 Thread Scott Newell
At 11:03 AM 2/27/2014, Poul-Henning Kamp wrote: Seriously: Keeping the computer alive and eating power is silly. We just need to find out how to get the Linux configured correctly. Exactly. We use the PC-Engines ALIX x86 single board computer stuff at work, and even I didn't have too much t

Re: [time-nuts] Maxim DS3232 and I2C

2014-02-15 Thread Scott Newell
At 04:20 PM 2/14/2014, d0ct0r wrote: hours is the same, but seconds and minutes has changed. Is there any method to read all three values (HH:MM:SS) by one single requests ? Or is there any other workaround for this issue ? Or it is not issue at all ? Thanks ! Sure, read multiple registers (0

Re: [time-nuts] Cheap 9.8Mhz Sa.22c's

2013-06-02 Thread Scott Newell
At 02:20 PM 6/2/2013, Don Latham wrote: The manual at least hints that you will get 1 pps out no matter which MHz signal is generated, although I find the presence of 1 pps out and 1 pps in signals a bit confusing... It appears to have a TIC and logic for disciplining the pps out to a GPS pps

[time-nuts] WWVB / Xtendwave patents

2012-09-27 Thread Scott Newell
Looks like one has issued (8,270,465). Application 20120082008 appears to be relevant as well. http://www.google.com/patents/US8270465 http://www.google.com/patents/US20120082008 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go t

[time-nuts] ACTS leap second caught!

2012-06-30 Thread Scott Newell
National Institute of Standards and Technology Telephone Time Service, Generator 1c Enter the question mark character for HELP D L MJD YR MO DA HH MM SS ST S UT1 msADV 56108 12-06-30 23:59:35 50 1 -.6 045.0 UTC(NIST) * 56108 12-06-30 23:59:36 50 1 -.6 045.0 UTC

Re: [time-nuts] To remove membership

2012-04-18 Thread Scott Newell
At 03:19 PM 4/18/2012, John Ackermann N8UR wrote: The certificate "error" is because it's self-signed and not commercial, which costs a chunk of change every year. We use SSL to avoid sending passwords in the clear and not for ecommerce purposes, so (apart from browsers complaining) there isn'

Re: [time-nuts] ebay warning

2012-02-22 Thread Scott Newell
At 12:12 PM 2/22/2012, Chris Albertson wrote: The only way I can figure is to look at the location they ship from. My last package from nichegeek has a UPS label from Sain Store, Dong Guan Sunrain e-commerce center, building 7 Songke Yuan in Dongguan. -- newell N5TNL _

Re: [time-nuts] FE-5680A partial schematics (digital only)

2012-02-14 Thread Scott Newell
At 09:24 PM 2/12/2012, Elio Corbolante wrote: Being not yet able to dump the FE-5680A firmware, I started to write down the DIGITAL part of the schematics: < http://www.rhodiatoce.com/pics/time-nuts/FE-5680A/FE-5680A_schematics_v0.0.pdf > I hope it can be useful to some of you. (any suggestion is

Re: [time-nuts] Morion MV89A pics

2012-02-13 Thread Scott Newell
At 03:50 AM 2/13/2012, Azelio Boriani wrote: I have always thought the space inside the cover was the outer oven... now I realize this is not quite correct but then the MV201, specified as a double-oven, can't be a double-oven. The MV201 has the crystal under a sort I just checked the MV201 onl

Re: [time-nuts] Morion MV89A pics

2012-02-13 Thread Scott Newell
At 11:10 AM 2/13/2012, Bob Camp wrote: trash the unit. Of course if somebody has one they hooked up backwards on the supply... I doubt that would do it--there appears to be a series Schottky on the power input line. -- newell N5TNL ___ time-nu

Re: [time-nuts] Morion MV89A pics

2012-02-12 Thread Scott Newell
At 05:45 PM 2/12/2012, Sam wrote: Thanks for the pictures Scott, it was interesting to see under the shell of these. I wasn't expecting the inside to look so "hand made". Yep. Some of the surface mount components appear to be hand soldered. I was a little surprised that there was no mechani

Re: [time-nuts] Morion MV89A pics

2012-02-12 Thread Scott Newell
At 08:26 AM 2/12/2012, Azelio Boriani wrote: Extremely delicate that fluffy contton, try not to tear apart it so that you can place it again on top when closing the MV89. In my opinion the internal oven is the inner one... If that's actually the inner oven, where's the outer oven? I don't see

[time-nuts] Morion MV89A pics

2012-02-11 Thread Scott Newell
As requested, pics of the inside of my Morion XO00281M-CT-MV89 MV89A double oven ultra precision OCXO, serial ZA5310, date 03/22. Sorry, I didn't feel like peeling apart the outer oven. Small pics (~50 kB): http://n5tnl.com/time/mv89a/mv89a_1_small.jpg http://n5tnl.com/time/mv89a/mv89a_2_small

Re: [time-nuts] Morion MV89 output level?

2012-02-09 Thread Scott Newell
At 11:20 AM 2/9/2012, Bob Camp wrote: Hi I would avoid super heat type approaches. The risk is getting the glass to metal seals on the base to hot to fast. Normally the can needs more heat than the base, but not always. A lot depends on just how thick each one is and what they are made of. It'

[time-nuts] Morion MV89 output level?

2012-02-08 Thread Scott Newell
Got my replacement FE-5680 and a MV89 in from Nichegeek. I figured I'd better power up and check the MV89 before I let 'em know everything was ok. The MV89 is warming up nicely, the current is down to 290 mA (and still dropping), but the output seems low; about 40 mV RMS as measured on a scop

Re: [time-nuts] FE5680 DDS plot

2012-02-02 Thread Scott Newell
At 03:20 AM 2/2/2012, Javier Herrero wrote: I forgot... have you had the opportunity to check if the difference between the two DDS programming words is the same in all cases? All my readings leds to 1400.00x Hz, I've not looked at it but probably the difference in DDS counts is constant. So

[time-nuts] FE5680 DDS plot

2012-02-01 Thread Scott Newell
Javier Herrero's exciting DDS discovery led to this plot of the unit tweaking the frequency (cmd 0x22): http://n5tnl.com/time/fe-5680a/graphs/dds_autotuning.png It appears to make an adjustment even before lock! -- newell N5TNL ___ time-nuts maili

Re: [time-nuts] FE-.5680A trimming resolution

2012-01-29 Thread Scott Newell
At 05:45 AM 1/29/2012, Javier Herrero wrote: For example, the following data has been gathered: Serial offset 00 00 00 00 DDS A word: 44 02 62 F6 = 1141007094 = 5 313 228.32219 Hz DDS B word: 43 FD CC 8E = 1140706446 = 5 311 828.32085 Hz Can you do a test at +/- fullscale offset as well? Thi

Re: [time-nuts] [Bulk] Re: Windows app for FE5680 info dump

2012-01-27 Thread Scott Newell
At 06:17 PM 1/27/2012, J. L. Trantham wrote: Same thing happened to me. AVG has no problem with it. I turned off Symantec, downloaded it, saved it, and proceeded. I don't really think there's much I can do. I sent in a false positive report to Norton/Symantec, but I got back the dreaded "ca

Re: [time-nuts] Windows app for FE5680 info dump

2012-01-26 Thread Scott Newell
At 07:08 PM 1/26/2012, Don Latham wrote: I'd like to try this program, but my browser simply times out at the URL supplied below. Is it right at: http://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exe Try again, please. (I had a firewall rule that kept getting triggered by a bad link fr

Re: [time-nuts] Things to look for when buying a few FE-5680A's?

2012-01-26 Thread Scott Newell
At 11:36 AM 1/26/2012, Chris Albertson wrote: The "option 2" that is in the book is different from the fine scale adjustment the current $40 can do. the true option two units can be programmed over a range of many MHz by sending RS232 commands but the current units can only by programmed over

Re: [time-nuts] Things to look for when buying a few FE-5680A's?

2012-01-26 Thread Scott Newell
At 01:21 AM 1/26/2012, Rex wrote: physical differences (like an sma output). Also, FEI has not been responsive, to my knowledge, to any questions from us surplus consumers/hackers. I wonder if they'd be responsive to a 'group-buy' of documentation or answers? Maybe it comes down to whether i

Re: [time-nuts] Determination of the placement of the first pps

2012-01-25 Thread Scott Newell
At 09:13 PM 1/25/2012, J. L. Trantham wrote: Both pin 3 and pin 6 are 'high' when power is first applied. When the unit 'locks', both pin 3 and 6 go 'low' but pin 6 then puts out a 5 uSec wide 1 PPS pulse, as judged by my 'calibrated eyeball' which means that I used a stop watch and counted the

[time-nuts] Windows app for FE5680 info dump

2012-01-24 Thread Scott Newell
I've been asked for a windows version of the FE5680 info dump app, so here it is: http://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exe Please let me know if you have any trouble. It's a command line program that's expecting a com port number as the only parameter ("fe5680_info_win32.e

[time-nuts] FE-5680 ADC vs. supply voltage

2012-01-22 Thread Scott Newell
Here's a graph of the ADC readings as I dropped the power supply voltage from 18V down to 6V on my non-locking FE-5680: http://n5tnl.com/time/fe-5680a/graphs/unit_1_volttest.png I'd hoped that channel 2 would have been a supply voltage, but it isn't, or it's one of the low voltage regulated ra

[time-nuts] FE-5680 serial command tester

2012-01-22 Thread Scott Newell
Here's some source and a cygwin binary (let me know if I need to do a win32 binary) for a little app that will try all the known data request commands on your FE-5680. If you're willing and able, I'd like for you to run this against each unit you have before it's locked and again after it's lo

[time-nuts] FE-5680 logging app

2012-01-21 Thread Scott Newell
John Beale was nice enough to convince me to clean up and release the source code I've been using to plot data from undocumented FE-5680 serial commands. It builds cleanly on linux and cygwin at least. Don't forget to link with the rt libs ("gcc fe5680_logger.cpp -lrt"). Let me know if you h

Re: [time-nuts] Progress on the FE-5680A serial commands!

2012-01-20 Thread Scott Newell
[Resend due to oops last night involving multiple email accounts.] And here are the graphs from unit #1, the one that won't lock: http://n5tnl.com/time/fe-5680a/graphs/fe5680_1_ch3.png http://n5tnl.com/time/fe-5680a/graphs/fe5680_1_ch4.png -- newell N5TNL

[time-nuts] Progress on the FE-5680A serial commands!

2012-01-19 Thread Scott Newell
Here's some data from one of my working FE-5680A units: http://n5tnl.com/time/fe-5680a/graphs/fe5680_2_ch3.png http://n5tnl.com/time/fe-5680a/graphs/fe5680_2_ch4.png This assumes that the reply from the undoc command 0x5a is the raw counts from the 4 channel 12 bit ADC. I think channel 3 is a

[time-nuts] Undocumented FE-5680A commands

2012-01-18 Thread Scott Newell
I'm playing around with the unlockable problem child. Turns out I get a response from the unit to several undocumented serial port commands. In particular, the replies from 0x22, 0x57, 0x59, and 0x5A seem to vary each time I read the unit. Not all the commands respond each time; there's cert

Re: [time-nuts] FE-5680A won't lock

2012-01-18 Thread Scott Newell
At 03:50 PM 1/18/2012, Robert Benward wrote: I got my first one from nichegeek and it took a long time to lock. Someone suggested I adjust C217 which worked, but if I jarr the oscillator it will go I've run it at least an hour without a lock. Tried running it open and adjusting C217, but st

[time-nuts] FE-5680A won't lock

2012-01-18 Thread Scott Newell
Just got my 3 in from nichegeek. Paid Thursday, shipped Friday, arrived this evening. Wow. (Actually arrived too quickly--I don't have my t-bolt running, so I can't easily do an accurate frequency check.) Two power up and lock in <3 minutes. One powers up, gets toasty, and gives 10MHz, but

Re: [time-nuts] New York State Metrology lab

2011-12-07 Thread Scott Newell
At 10:26 AM 12/7/2011, Jim Lux wrote: Yes, but do you have precision mass standards for feed scales at home? Some of us do. ;-) -- newell N5TNL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin

Re: [time-nuts] 2 (Spoofing)

2011-10-05 Thread Scott Newell
At 07:09 AM 10/5/2011, John Ackermann N8UR wrote: The mailing list system resends messages rather than just relaying them. List messages won't show details of the originating sender path. Really? It appears to me that your message was sent from 10.73.100.66 through a dsl line (h69-128-27-

[time-nuts] 60 Hz timelapse

2011-09-24 Thread Scott Newell
I finally built a timelapse movie of the 60 Hz clock + webcam experiment. It covers about a week, but there may be a gap or three. It's a 20 MB file (tested with VLC and mplayer). http://n5tnl.com/tec/timelapse_clock.mov I need to improve the lighting to eliminate the horrible shadow around

[time-nuts] NERC TEC elimination update

2011-09-23 Thread Scott Newell
Looks like they're going to talk about it again in December: http://www.nerc.com/page.php?cid=6%7C386 -- newell N5TNL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and f

[time-nuts] Better TEC data (MJD 55780)

2011-08-07 Thread Scott Newell
Cumulative error, starting at MJD 55780 (difference scaled by 100 and smoothed): http://n5tnl.com/tec/55780/55780.png Frequency error, 3600 s intervals: http://n5tnl.com/tec/55780/55780_3600.png Frequency error, 600 s intervals: http://n5tnl.com/tec/55780/55780_600.png Frequency error, 60 s in

Re: [time-nuts] Better TEC data (MJD 55779)

2011-08-06 Thread Scott Newell
Added recent snapshots of the live graphs: http://n5tnl.com/tec/55779/sparc/sparc.htm http://n5tnl.com/tec/55779/tock/tock.htm These are in localtime (CDT), not UTC. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.f

[time-nuts] Better TEC data (MJD 55779)

2011-08-06 Thread Scott Newell
Cumulative error, starting at MJD 55779 (difference scaled by 100 and smoothed): http://n5tnl.com/tec/55779/55779.png Frequency error, 3600 s intervals: http://n5tnl.com/tec/55779/55779_3600.png Frequency error, 600 s intervals: http://n5tnl.com/tec/55779/55779_600.png Frequency error, 60 s in

Re: [time-nuts] Weird TEC data

2011-08-06 Thread Scott Newell
At 07:13 PM 8/6/2011, Hal Murray wrote: new...@cei.net said: > The general shape and bumps in the plots track nicely, but I'm wondering > why there's so many cycles difference after 36 hours. How are you collecting the data? What's the time between samples? First off, your TEC data was an i

Re: [time-nuts] Weird TEC data

2011-08-04 Thread Scott Newell
At 03:27 AM 8/4/2011, Bill Hawkins wrote: What that means is, that if the two locations representing the red and green traces are on the same grid then there should be less than one cycle difference between them at all times. That's what I was expecting. NTP can't be causing the jumps becau

Re: [time-nuts] Weird TEC data

2011-08-03 Thread Scott Newell
At 05:00 AM 8/3/2011, Magnus Danielson wrote: On 08/03/2011 11:19 AM, Attila Kinali wrote: Could be a measurement error (like losing ticks or something). Have you ploted the difference between both? For me it looks as the difference is (nearly) linearly growing over time, but it's hard to tell

[time-nuts] Weird TEC data

2011-08-02 Thread Scott Newell
Here's the latest plot from my TEC test rigs. Y-axis is phase error (in 60 Hz cycles), X-axis is time in MJD. The plot starts at 7AM local time. http://n5tnl.com/tec/tec_test_01.png Same serial connected embedded hardware, timestamped on the receipt of first character. One machine (red line

Re: [time-nuts] NERC TEC test postponed

2011-07-24 Thread Scott Newell
At 04:50 PM 7/15/2011, Tom Van Baak (lab/iPad) wrote: I've been told the NERC has decided to postpone their July 14 TEC-elimination test. Sorry I don't have a URL with more information. Their website has been updated: http://www.nerc.com/page.php?cid=6|386 The TEC elimination field tests are

Re: [time-nuts] Discipline an oscillator with NTP?

2011-07-23 Thread Scott Newell
At 06:45 PM 7/23/2011, Don Latham wrote: than a client. I looked up man ntpd, and it seems at first glance to be a Linux/Unix client that will sync up a local computer. I want to generate a network server that ntpd or other clients can access. Perhaps ntpd is the server. -- newell N5TNL _

Re: [time-nuts] 60 Hz measurement party

2011-07-03 Thread Scott Newell
At 09:54 PM 7/3/2011, Tom Van Baak wrote: This is about half a day from a webcam, taken at 15 minute intervals by a PC, compressed to a 12 second animated GIF. http://www.leapsecond.com/pages/tec/mains-clock-ani.gif That's funny...I picked up a mains clock yesterday and started something sim

Re: [time-nuts] TEC party file format?

2011-06-30 Thread Scott Newell
At 01:24 PM 6/30/2011, Hal Murray wrote: > Any advice on an easy way to convert my timestampts from time_t to mjd? > I'm using C here. It's trivial. All you have to do is offset by the difference in starting days. Got it working. Thanks! -- newell N5TNL ___

Re: [time-nuts] TEC party file format?

2011-06-30 Thread Scott Newell
At 01:31 PM 6/28/2011, Tom Van Baak wrote: I'm planning on counting 60Hz line cycles with some embedded hardware, then dumping the count over RS-232 every minute or so to a linux box running ntp. Any thoughts on what data to log? Scott, You have a PC and RS232? Skip the embedded hardware.

[time-nuts] Precision PC timing [was TEC party file format?]

2011-06-29 Thread Scott Newell
At 02:14 PM 6/29/2011, Tom Van Baak wrote: Out of curiosity, if anyone on the list has pointer to papers that show actual measurements of desktop systems used as precise timing devices let me know. Not external boxes or PCI cards, but using the OS itself as a timer. I'm sure with care 1 us or ev

[time-nuts] TEC party file format?

2011-06-28 Thread Scott Newell
I'm planning on counting 60Hz line cycles with some embedded hardware, then dumping the count over RS-232 every minute or so to a linux box running ntp. Any thoughts on what data to log? Obviously, the 60 Hz cycle counter. Timestamp when data was received at the serial port? (It looks like

Re: [time-nuts] OT: Bob Pease died

2011-06-20 Thread Scott Newell
At 02:51 PM 6/20/2011, Javier Herrero wrote: I was thinking the same... and also that Pease name was Robert A., not Ralph (and its usually signature was RAP) How's this: Ralph had two stories to tell in that post. The first was that he received an email from Bob Pease the night of the accid

Re: [time-nuts] OT: Bob Pease died

2011-06-20 Thread Scott Newell
Here is a letter Bob wrote about Jim shortly before his death as posted by one of the commentators from the below link: Then he calls us to an awards meeting. I was only 19. He gives the new CEO the triple humper award.He pulls a three cup bra from a shopping cart. I saw that too, but the a

  1   2   3   >