[time-nuts] PM 6681 COUNTER FOR SALE
Hi, I am selling my Fluke 6681 Counter. It is in very good condition, comes with operator and service manuals. $800 I will email pictures if interested. Jeff ___ 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] Thunderbolt Monitor
Didier, Any chance of the GPS Monitor which you are developing being available as a kit? Jeff - Original Message - From: Didier Juges [EMAIL PROTECTED] To: time-nuts@febo.com Sent: Sunday, July 13, 2008 8:55 PM Subject: [time-nuts] Thunderbolt Monitor I have uploaded version 0.0.8. Alarms (if any) are decoded and displayed in succession on the second line of the display, alternated with the Disciplining Status. The archive has been fixed, there was a problem with v004. If you downloaded it and had problems, I am sorry... Check the Wiki for details: http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:gps_monitor Didier KO4BB ___ 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] LPRO 101 ADJUSTMENT
Hi, I recently acquired a LPRO 101 Rubidium Oscillator. After reading the manual I see that there are two ways to adjust the frequency 1) using and adjusting screw on the unit and 2) using the External C-field control signal at pin J1-7. Has anyone experimented with either method and if so what method was preferred? Jeff ___ 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] LPRO 101 ADJUSTMENT
If I choose to control the frequency via External C-field control I guess it would take a very precise and stable voltage source. Any thoughts or suggestions? - Original Message - From: Scott Mace [EMAIL PROTECTED] To: jshank [EMAIL PROTECTED]; Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Friday, July 25, 2008 7:15 PM Subject: Re: [time-nuts] LPRO 101 ADJUSTMENT Both methods work well. Be sure the unit is mounted to some sort of heatsink,chassis, etc. I'm using a Fury GPS receiver to drive the EFC on an LPRO-101. You won't get much range out of either adjustment. Leave it powered on for a couple of hours before trying to adjust it. I usually set the trim pot in the middle of it's range and use the EFC pin. I think it's a 28 or 30 turn pot. EFC is 0-5v. The unit will self-bias to around 2.5v if the EFC pin is open. Scott jshank wrote: Hi, I recently acquired a LPRO 101 Rubidium Oscillator. After reading the manual I see that there are two ways to adjust the frequency 1) using and adjusting screw on the unit and 2) using the External C-field control signal at pin J1-7. Has anyone experimented with either method and if so what method was preferred? Jeff ___ 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] Thunderbolt monitor
The Noritake display looks great. I am hoping that a kit of this proposed Thunderbolt monitor with the Noritake display will be made available through TARP in the near future. I am sure that many of the Thunderbolts which recently became available would benefit from such a kit. Jeff - Original Message - From: Didier Juges [EMAIL PROTECTED] To: Time-Nuts time-nuts@febo.com Sent: Tuesday, July 15, 2008 12:47 AM Subject: [time-nuts] Thunderbolt monitor I made a second version (same firmware) of the Thunderbolt monitor. This one uses the plastic DIP version of the processor mounted on a small Radio Shack proto board and it uses a gorgeous Noritake Vacuum Fluorescent display. The interface between the Noritake and any ordinary LCD display is the same ( as far as pin-out is concerned), except that the Noritake does not have a contrast adjustment. Otherwise, the firmware is the same, once the differences are accounted for. The Noritake is generally much faster than most 2 line LCDs when updating the data, but requires a little more time to initialize themselves at power up. My software can drive either display without modification. The Noritake displays have a software command to adjust the brightness down to half, and that's it. My firmware does not take advantage of that feature, which I find relatively useless, but may prolong the life of the display. The VFDs only have a few years of life under continuous operation, so dimming the display or turning it off altogether when not needed might be a good idea. See pictures at http://www.ko4bb.com/Timing/GPSMonitor/ Didier KO4BB ___ 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] Z3801A ThunderBolt USING SAME ANTENNA?
Hi, I am trying to set up a Z3801A and a ThunderBolt to operate off of one symmetricom 58532A antenna using a symmetricom 4-port smartsplitter. The Z3801A manual suggest using LMR 400 cable which is a 50 ohm cable which is compatible with the antenna. The thunderbolt which I receive has a type F connector and the thunderbolt manual suggest using 75 ohm rg59 cable. Will I have a problem connecting the thunderbolt to the smartsplitter using LRM400 50 ohm cable? The thunderbolt which I received came with a type f to bnc connector, but isn't a bnc connector underrated to handle the 1.5 GHz signal? Thanks, Jeff ___ 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] Z3801A ThunderBolt USING SAME ANTENNA?
Hi, I am trying to set up a Z3801A and a ThunderBolt to operate off of one symmetricom 58532A antenna using a symmetricom 4-port smartsplitter. The Z3801A manual suggest using LMR 400 cable which is a 50 ohm cable which is compatible with the antenna. The thunderbolt which I receive has a type F connector and the thunderbolt manual suggest using 75 ohm rg59 cable. Will I have a problem connecting the thunderbolt to the smartsplitter using LRM400 50 ohm cable? The thunderbolt which I received came with a type f to bnc connector, but isn't a bnc connector underrated to handle the 1.5 GHz signal? Thanks, Jeff ___ 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] THUNDERBOLE STATUS LED'S
Hi, Has anyone determined how an interface could be incorporated into the Thunderbolt so as to show if it was locked. Some status led's would be nice such as can be fount on the Z3801's front panel. Jeff ___ 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] THUNDERBOLT STATUS LED'S
Mark, I hope you or someone else is able to come up with a Thunderbolt controller for the many of us who have or will be receiving Thunderbolts. A controller based on a LCD touchscreen would be great in the since that one could assemble a self-contained frequency standard based on the Thunderbolt. Keep us informed in you progress with this project. - Original Message - From: Mark Sims [EMAIL PROTECTED] To: time-nuts@febo.com Sent: Monday, June 23, 2008 8:02 PM Subject: [time-nuts] THUNDERBOLT STATUS LED'S The Thunderbolt does not produce NMEA messages, so you would need to parse the TSIP data stream. My C program to do that for all Thunderbolt messages is around 2700 lines long. LOCK on the Thunderbolt is not a simple question to answer with a single blinkey light. There are many degrees of lockage and unlockage to consider. You have satellite lock, oscillator lock, signal quality, oscillator holdover, PPS offset, frequency offset, etc. A simple LED lock light would leave much to the imagination (but then, what you don't know can't hurt you, right...) I am working on a Thunderbolt controller based on a small LCD touchscreen graphics controller (mega-donkey.com). First I will probably do a version that runs on old laptops. _ Earn cashback on your purchases with Live Search - the search that pays you back! http://search.live.com/cashback/?pkw=form=MIJAAF/publ=HMTGL/crea=earncashback ___ 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] Thunderbolt Group Buy, part 1
HI, I am not among the preorder list, but should like to be on the second round if possible. I would like one Thanks, Jeff WA3GWB ___ 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] Ovenaire 10 MHz OSC 49-69 PIN OUT
Hi, I have an Ovenaire 10 MHz OSC 49-69 ser.no. 20823-3 which I am in need of a pin-out and or any other information. Thanks, Jeff ___ 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] 58532a ANTENNA CABLE?
There appears to be three software-monitoring programs available, GPSCon Pro, GPS Control SatStat. I was just curious about what the group thinks of these three programs or if there are any other available. The Z3801A manual suggest rg-213 of lmr-400. I have neither on hand but am not apposed to purchasing either. I do have rg58/u and coax CATV cable on hand but the problem is that it is a difficult process to run the cable from my basement lab to the second floor attic and I only o want to do it once. Originally, I was going to penetrate the roof at the ridgeline and install the antenna on a one foot but I understand it is possible to receive singles from under the plywood/asphalt shingle roof. Is it worth a penetration of the roof? Jeff ___ 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] 58532a ANTENNA CABLE?
Hi, I am in the process of setting up a Z3801A and would like to know what type of cable I should use for a 50' run to an 58532A antenna. Also I need to purchase one of the monitoring software programs for this Z3801A, any suggestions. jshank ___ 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] spectracom line taps
Jamie, If you have the Spectracom 8140 you need to use the line taps. With out using the line taps you sinewave will not be symmetrically along 0 voltage, that is the sine wave will all be positive voltage. The line taps were available in 10 MHz, 5 MHz, 1 MHz and 0.1MHz.; what that means, if your distribution amp is outputting 10 MHz and you use either of the above line taps you will receive the line tap stated frequency. In this way you can have a variety of output signals available to use for different applications. Spectracom has the manual for the 8140 available for a free download on their website. www.spectracomcorp.com/ go to; library; downloads; manuals These are great and very versatile distribution amps. ps check your amp for installed options and refer to the manual Jeff --- Original Message - From: James R. Gorr [EMAIL PROTECTED] To: time-nuts@febo.com Sent: Monday, February 18, 2008 12:18 PM Subject: [time-nuts] spectracom line taps I have a Spectracom 8140 frequency distribution amp. I see on ebay there are line taps for this device. Do I need the line taps? Or can I just use the 8140 as is? What are the line taps supposed to do? Jamie Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ___ 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] FS: HP Crystal Oscillator 10811-60105
If it is working and available, where do I send the money. Jeff - Original Message - From: F Mitchell [EMAIL PROTECTED] To: time-nuts@febo.com Sent: Wednesday, January 30, 2008 1:39 PM Subject: [time-nuts] FS: HP Crystal Oscillator 10811-60105 For Sale: HP Crystal Oscillator 10811-60105, mounted on a printed circuit board with nomenclature D 33303F 05328-20027. Asking $60 obo shipped. Thanks Mitch W4OA No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.16/1250 - Release Date: 01/29/08 22:20 ___ 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] PM6681 Service Manual INTERPOLATOR CALIBRATION SOFTWARE
Hi, Thanks for uploading the Fluke PM-6681/Pendulum CNT-81 service manual to http://www.ko4bb.com/cgi-bin/search.pl Looks like calibration is relatively simple and no special software is required unless the instrument has lost its calibration information. If this occurs then an interpolation calibration is necessary which involves a interpolator calibration program which was included with the service manual on a 3 1/2 disk. The interpolator only needs calibration if the counter has lost its calibration information. It would be nice to find a copy of this program. Any suggestions from the group? Jeff - Original Message - From: S. Nestra [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Friday, November 30, 2007 5:26 PM Subject: [time-nuts] PM6681 Manual For those interested, I have uploaded the service manual for the Fluke PM-6681/Pendulum CNT-81 to the k04bb website. Too bad you can't calibrate these beasts yourself, special software is needed. Regards, Stijn Nestra ___ 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] Fluke 6681/Pendulum CNT-81 arrival
In regards to the Fluke 6681 does anyone know where a calibration manual could be found? Jeff - Original Message - From: Magnus Danielson [EMAIL PROTECTED] To: time-nuts@febo.com Sent: Thursday, November 29, 2007 5:25 PM Subject: [time-nuts] Fluke 6681/Pendulum CNT-81 arrival Hi! Today my Fluke 6681/Pendulum CNT-81 arrived, one of the ones that showed up on Ebay from Singapore a few weeks back. The calibration is still valid (but then, the internal memory of it was lost and no paper, ah well, like I really cared). It powered up nicely except for the comment that it lost the calibration memory, but that can be handled. It was a bit dirty, but some warm water and a cloth should handle that. No problem operating it. With 25 ps single-shot resolution it should be a nice counter for TI exercises. Wasting the CNT-90 on static measurements isn't that fun, and the CNT-81 isn't as noisy and powerhungry as the 5370B, which is a good thing most of the time. Hmm, I should make a counter test soon. Just awaiting the next counter... :-P Cheers, Magnus ___ 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] 53131A or 5370B
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi, I have a question to post to the group. I am in the process of rearranging my hobby electronic work area. I have a rack which I would like to devote to time and frequency measurment/standard. I will be placing equipment such as wwvb and gps receivers, local oscillators, ect. Here is the question, I only have room for one counter, should it be a 5370B or a 53131A? Which is more useful to measuring frequency variations? Jeff ___ 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] HP E1938 oscillator
Rick, If any are available I would like one. I could pay through PayPal or send you a money order, whichever you prefer. Thanks, Jeff Shank WA3GWB - Original Message - From: Richard (Rick) Karlquist [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, May 26, 2007 5:07 PM Subject: Re: [time-nuts] HP E1938 oscillator I still have dozens of surplus E1938A's if anyone wants one. They are in worked the last time it was turned on, but no guarantee of specs condition. I can't accept money for these units. Rick Karlquist N6RK E1938A circuit designer Due to the high level of interest, I may need to limit the oscillators to one per person. I will be getting the oscillators out of storage today and will try to make an accounting of oscillators vs requestors. I am suggesting an $8.95 donation for a flat rate Priority Mail box. I think it will fit into one of those boxes. Regarding non-USA requestors: I will need to look into the customs aspect of this. If anyone on the list can give me a tutorial on this it would be helpful. These are gifts if that matters for customs purposes. Also, they have essentially zero market value as discards. I am happy that I can give these a good home. I almost threw them away last month while cleaning up. Rick Karlquist ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] HP 5370A Frequency counter Problem(s)
Could someone please provide me with a link or the procedure to disassemble, cleaned / lubed. Thanks Jeff - Original Message - From: John Miles [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wednesday, March 21, 2007 7:43 PM Subject: Re: [time-nuts] HP 5370A Frequency counter Problem(s) It's normal for those last few digits to bounce around when measuring frequency. The shorter the gate time, the less-consistent the LSDs will be. How do the tolerances compare to what's in the manual's self-check procedures? You'll note that they don't tell you to expect 10.000 000 000 MHz, but 10.000 000 0XX MHz. The important things to look at with a 5370 are: 1) verify that the trigger levels are 0.00 +/- 0.01 with the controls set to PRESET; 2) verify that the +T.I. ONLY interval is within 1 ns of 100.0 ns; and 3) verify that the jitter when measuring its own clock reference is less than 100 ps (all of the ones I have seen are under 50.) If all of that is OK, then chances are everything else will work properly including frequency measurement. I've found that many of them need their front-panel input assembly taken apart and the switches carefully cleaned/lubed. That alone may clear up a lot of flakiness. There have also been some reports of poorly-seated ROMs, and/or socket contact problems. -- john, KE5FX I got a HP 5370A off of Ebay and although it looks terrible I thought it would probably work OK. But it doesn't :-( I downloaded the manual and have yet to print it out. Question; When doing a self check by feeding the 10 MHz from the back into the counter it counts cycles OK but the last 3 or 4 digits are erratic. I am starting to do as much alignment as I can but am wondering if this is a known problem and if a cure is known. Anyway I think I paid too much for this box of problems but will continue to try to repair. Any suggestions (on repair only) is appreciated Bill K7NOM ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Frequency counter recommendations
Hi, I also use a HP 53131A counter and find it to me the nicest, most stable counter that I have used to date. It is amazing how versatile this counter is and how stable when using an gps external reference. Other counters I have or have had are the HP 5370B, 5334, 5335, and various 5328's. I would like to try a SR620 but after reading the various post last month on the inability to display an 10 MHz reading when using a 10MHz reference I am a little leery of trying one. Jeff - Original Message - From: Gerald Molenkamp [EMAIL PROTECTED] To: time-nuts@febo.com Sent: Wednesday, March 21, 2007 6:39 AM Subject: Re: [time-nuts] Frequency counter recommendations Hi All, For over 12 years I have been running a HP53131 12 digit counter and the freeware Agilent IntuiLink Connectivity Software via an old NI IEEE-488 GPIB to Ethernet. From a functionality point of view it is by far the best counter I have used. Coupled with Intuilink S/W in EXCEL as an add-ins, graphs, long term statistics and drift performance can be presented easily. I recently installed a HP10811 as an after market add-on, as a portable device it's now as accurate as any portable counter can be. Although the 53131 with no options is limited to 250 MHz, my next project is a channel C prescaler that will take the unit to 3GHz or beyond. If any one has added a home brew Channel C, please let me know how it turned out. Regards Gerald ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Fine print on HP 5334B
Hi, I check my 5370b by using the 10 MHz output and feeding it to the counter. What I see is a fluctuation in the displayed reading of between 9.999 999 998 73 to 9.999 999 997 25. The instrument is set for 1 s gate. Sometimes one reading will remain for a couple of arming but usually the reading will change between six different readings with the high and low as above. I am assuming there is a problem with this instrument and am asking for suggestions on what can be done to correct this problem. Ps. this instrument has the 10811-06111 oscillator. I have tried using the 10 MHz output from the 5370 as an external reference to a 53131A while measuring the frequency of the 5370 10 MHz output. After both instruments warm up the frequency of the 5370 output is displayed on the 53131A with a 1 s gate time as 10.000 000 000 and if I increase the gate time to 10s the reading is 10.000 000 000 0 with the reading remaining rock solid. Thanks, Jeff - Original Message - From: John Miles [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thursday, February 22, 2007 3:29 PM Subject: Re: [time-nuts] Fine print on HP 5334B What do people observe on their 5370A/Bs? After warmup, I tend to see a bias of about +0.0005 Hz, or 5E-11, when observing its own 10 MHz source. There is some occasional random waffling on the order of about +/- 0.001 Hz but for the most part it reads close to 10.000 000 000 5. I have never been able to calibrate the interpolators (specifically the anticoincidence adjustment) in these counters, due to lack of a vernier-adjustable pulse generator. When I was going through one last week, I just left the anticoincidence pot in the middle of its range, and couldn't see any ill effects from doing so. The manual is not that great at describing exactly what this adjustment does. -- john, KE5FX -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Hal Murray Sent: Thursday, February 22, 2007 12:10 PM To: time-nuts@febo.com Subject: [time-nuts] Fine print on HP 5334B (Interesting timing given the SR620 discussion.) I'm (finally) getting my GPIB gizmo working. I have a HP 5334B running off its (good) internal osc looking at the output of a Z3801A. Assuming the Z3801A is stable, this is a backwards way of looking at the internal osc. (There is a shared in/out connector for the internal clock, so I can't see the internal osc if I feed it an ext reference.) I left it running for a night with the mostly default setup and 100 cycle averaging. I think the default gate time is 0.3 seconds. Answers ranged from: F +9.99330E+06 F +9.99333E+06 ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
[time-nuts] COMPARE GPS DERIVED 10MHz FREQUENCY OF TO LOCAL OSCILLATOR
Hi, What would be a good method of using my Z3801A 10MHz out put to adjust the oscillator adjustment dial on my 8130 Spectracom Frequency Standard Oscillator. When I use the 8160A Spectracom NSB frequency Standard Receiver WWVB it has a frequency calibration feature which allows a local oscillator to be compared to the wwvb signal showing phase drift or slight frequency error in microseconds as well as a frequency counter showing frequency difference in 0.01 Hz and a recorder output allowing for monitoring to occur of several days. My question is what instrumentation or methods can I use to set my local oscillator to the Z3801A gps signal. I know there is instrumentation such as Tracor 527E Frequency Difference Meter which may provide some of the features as the Spectracom 8160A, but is this what I am look for. Jeff ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
