[time-nuts] OT: HP 8590A

Since the list members are familiar with lots of test equipment, I'd like to ask what the folks here think about the HP 8590A Spectrum Analyzer. Is this model ok? Are there any particular failures I should be aware of in this 20+ year old equipment? I have a chance to buy one locally. The only opt

Re: [time-nuts] OT: HP 8590A

Thanks to all for the advice. I agree with Said that a 8560E would be much nicer. However, I may be able to get this 8590A very inexpensively. Considering the price difference between this unit and a newer/better SA, I'm inclined to go with this one. I'm thinking of this as "training wheels". Once

Re: [time-nuts] Time bandits

The dog or the planet? On Sun, Mar 14, 2010 at 4:25 PM, Mark Sims wrote: > > Not to mention that yesterday was Pluto's birthday! > _ > Hotmail is redefining busy with tools for the New Busy. Get more from your > inbox. > http://www

Re: [time-nuts] OT - New Mexico travel and the VLA

When in Las Cruces, go to Ranchway on Valley Drive (just south of Picacho). It is my favorite Mexican food restaurant. Their chile is not hot. They have a wide menu selection (including a few non-traditional items) and good prices. They also have excellent barbecue. It's a nice little family run pl

Re: [time-nuts] OT - New Mexico travel and the VLA

> i tried ranchway yesterday.   nice.  i have been here for five years and > never went in before. > > 73 > > dave mallery Once is not enough :-) You have to go back until you've sampled every item on the menu. Joe Gray KA5ZEC ___ time-nuts mailing lis

[time-nuts] Very unique clock

http://hackaday.com/2010/01/15/know-your-resistors-tell-the-time/ I know I won't be the only one here who thinks this is very cool :-) Joe Gray KA5ZEC ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/m

Re: [time-nuts] Very unique clock

If you read the comments, the color issue is discussed. Seems the only color that isn't quite right is brown. Joe Gray KA5ZEC On Tue, Apr 13, 2010 at 7:04 AM, Poul-Henning Kamp wrote: > In message <00f401cadb08$e0ed9b90$a2c8d2...@com>, "Chris Stake" writes: > >>Very cool indeed. I wonder how he

[time-nuts] GPS lock

Did anyone else loose GPS lock from about 0600-1200 UTC on the 11th? My Z3801A went into holdover for the entire period, despite several satellites being visible. I wonder if this has anything to do with that malfunctioning WAAS bird that is supposed to be spewing RF everywhere? Joe Gray KA5ZEC _

[time-nuts] GPIB to serial

I just bought one of these for cheap: National Instruments GPIB-232CV-A Please tell me that I didn't do something stupid, and that this is useable for taking data from an HP 5370A. Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsub

Re: [time-nuts] Hot Water Electronics

I had seen that site before. As far as I can tell, that PIC Plot device is only good for sending data to a plotter/printer. It will not allow logging data from an instrument. Joe Gray W5JG On Sun, Jun 6, 2010 at 5:30 AM, wrote: > Lovely name isn't it?:-) > > Existence of this site might be comm

Re: [time-nuts] GPIB to serial

Looking at Ulrich's EZGPIB program, it appears that I should be able to use it. I did find the online manual for the GPIB-232CV-A. While I wait for the device to arrive, I have some reading to do. Antonio, just out of curiousity, what software did you use? Joe Gray W5JG On Sun, Jun 6, 2010 at 7:

Re: [time-nuts] GPIB to serial

--Original Message- >> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on >> Behalf Of Joseph Gray >> Sent: Sunday, June 06, 2010 12:50 AM >> To: Discussion of precise time and frequency measurement >> Subject: [time-nuts] GPIB to serial >&g

[time-nuts] Z3801A in holdover

My Z3801A has been going into holdover randomly for at least a month. Sometimes it doesn't happen for many days and other times two days in a row. The time in holdover is anywhere from under 1/2 hour to several hours. Last night, it went into holdover again and has been that way for over 20 hours.

Re: [time-nuts] PICTIC II

As asked by another, please post a PDF of the schematic. I don't have any software installed that can read the files you posted. Joe Gray W5JG On Sun, Jun 27, 2010 at 3:54 PM, Magnus Danielson wrote: > On 06/26/2010 09:11 AM, Richard H McCorkle wrote: >> >> Fellow Time-Nuts, >> When I first uplo

Re: [time-nuts] PICTIC II

I'm just a hobbyist and have a lesser understanding of this stuff than yourself. I'm interested to hear more about your project and also the PICTIC+ II that is mentioned on the web page. Some specs would be nice and if you have any type of user manual, that would even be better. If a kit is in the

Re: [time-nuts] PICTIC II

ey > > > > ----- Original Message > From: Joseph Gray > To: Discussion of precise time and frequency measurement > Sent: Sun, June 27, 2010 6:01:28 PM > Subject: Re: [time-nuts] PICTIC II > > As asked by another, please post a PDF of the schematic. I don't have

Re: [time-nuts] Nuts and Phoolery

I don't know if old Tek scopes are exactly endangered. I know someone who has quite a few scopes and plugins. If you want some of these space heaters, I'll put you in touch with him. Joe Gray W5JG On Sun, Jul 4, 2010 at 5:16 PM, J. Forster wrote: > Sadly, the Audiophool nuttery has real collater

Re: [time-nuts] PICTIC II Parts at Mouser

Any chance that someone could purchase a small quantity from Arrow Germany so Stanley could include them with the boards we ordered? Extra payment for the chips, of course. Joe Gray W5JG On Fri, Jul 9, 2010 at 7:21 PM, Richard H McCorkle wrote: > Time-Nuts, > > When the PICTIC was first develope

Re: [time-nuts] PICTIC II Parts - SOIC to PDIP Adaptor

http://www.futurlec.com/SMD_Adapters.shtml Joe Gray W5JG On Fri, Jul 9, 2010 at 9:06 PM, Tom Clifton wrote: > Would something like eBay 180460919851 be a suitable "adaptor"?  The > description > says that it takes .1 header pins on .3 centers 'ready for socket insertion'. > I'm sure that there

Re: [time-nuts] PICTIC II Parts - SOIC to PDIP Adaptor

Same ebay seller, different layout. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=18046092&rvr_id=&crlp=1_263602_263622&UA=%3F*%3F%3F&GUID=7c4b40741290a0b3f8f587f5ff797212&itemid=18046092&ff4=263602_263622 Joe Gray W5JG On Fri, Jul 9, 2010 at 9:06 PM, Tom Clifton wrote: > Would som

[time-nuts] FS: 5370A

Ok guys, it has been sitting on my floor far too long and I don't know when I'll get around to working on it. When I last messed with it, I went through quite a few of the performance tests and IIRC, most passed. It measures frequency ok, but it's off a bit on TI measurements. I intended to open it

[time-nuts] Shipping IC chips

Without naming names, I want to suggest that if anyone on this list is going to ship IC chips in the future (DIP in particular), that they either use the hard plastic tube the chips come in, or put the chips inside a box. Antistatic foam inside a padded envelope results in very flat pancakes. Just

[time-nuts] FS: HP 8662A

I believe that this should be of interest to some list members, due to the low phase noise of the 8662A. I don't want to spend any more time and money on this, so I'm selling it. The unit powers up and the status shows an error 10. Checking the output with my HP service monitor, I get a nice clean

[time-nuts] Divide by five

I need to divide a 125 Mhz clock by five. I have looked on Mouser and every chip I find is either obsolete or in SMT. Can anyone recommend a chip that is fast enough and comes in DIP? Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsu

Re: [time-nuts] Divide by five

by 5 > at 125 MHz see here http://ecee.colorado.edu/~mcleod/pdfs/IADE/references/ > 74AC161.pdf to be sure to work at 125MHz run with 5,5 to 6V... > > 73 > Alex > > > > On 11/7/2014 1:12 PM, Joseph Gray wrote: > >> I need to divide a 125 Mhz clock by five. I have

Re: [time-nuts] Electrolytic Capacitor Question

I bought one of those ESR testers some time ago. It works very well. It is from Russia, but ordering from Brooke is much easier :-) Joe Gray W5JG On Mon, Nov 10, 2014 at 6:51 PM, Brooke Clarke wrote: > Hi Perry: > > (shameless plug) Have you measured the tantalum caps? > I sell a combined ESR

[time-nuts] 10 MHz OCXO recommendations

>From the current crop of ebay OCXO's available, what have you actually used that you would recommend for the following? Sine output, either 5V or 12V, better than 0.2ppm stability after warmup. I plan on putting things in a sealed box, so there shouldn't be too wide a temperature fluctuation. Ever

Re: [time-nuts] 10 MHz OCXO recommendations

> You can run at 400 KHz by dividing by 5/5 and 4/9. True. Either will work. > You said "0.2ppm stability". What do you need for accuracy and/or how are you going to calibrate your setup? I will initially calibrate the OXCO against my HP GPSDO. Idealy, it will only need checking against the GPS

Re: [time-nuts] 10 MHz OCXO recommendations

> If 0.2 ppm over a narrow range is the objective, that sounds like a TCXO application. Please point me to such a TCXO at 14.4 MHz that is affordable. Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.

[time-nuts] Si5351A

Some of you have probably already heard of this new clock generator chip from Si. News of a board with this chip from Adafruit just came up on a local Amateur list today. A quick Google shows that some folks have used this chip in homebrew SSB rigs. My concern would be that when this chip generate

Re: [time-nuts] GPS in the news

Yes, I read that yesterday. It will be interesting to hear what the outcome of the study is. Joe Gray W5JG On Tue, Nov 18, 2014 at 4:59 AM, Charles Steinmetz wrote: > Dark matter the source of GPS irregularities? > >

Re: [time-nuts] GPS in the news

look at it, I have a kind of notion of what they imply one >> should look for, but it's not really well described exactly what to expect, >> but maybe it becomes clearer on a quality read-through. It is more >> suggestive than detailed method proposing, enough to show the

Re: [time-nuts] rs-422 rs-232 to fast ethernet converter

Didier has a good suggestion as to the serial to Wifi adapter. I may order one for my Z3801. Looking on Amazon, I see these two units that are more reasonably priced: http://www.amazon.com/Keynice-Ethernet-Intelligent-Communication-Wireless/dp/B00JTUVA0G/ref=pd_sim_sbs_e_1?ie=UTF8 http://www.amaz

[time-nuts] Distribution amps and isolation transformers

Although my current project doesn't have the strict requirements that many of you have, I thought I would mention part of it, due to the recent talk of distribution amps. I am putting one of the FE5680A's that I bought a while back into a permanent home. I have a nice box from a gutted HP microwav

Re: [time-nuts] anyone tried the cheap Lea-6T modules seen on eBay?

I bought one of those recently. I haven't done more than power it on to see if it works. I will probably look at it more over Thanksgiving. Joe Gray W5JG On Nov 25, 2014 9:15 AM, "Mike Cook" wrote: > You may have seen them as in > < > http://www.ebay.fr/itm/Ublox-LEA-6T-GPS-Module-w-Compass-for-

[time-nuts] LTR-Lite GPS

Looking closely at the board, I see it uses a Venus GPS chipset. And yet folks here are using the ublox ucenter software with it. What am I missing? Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com

Re: [time-nuts] LTR-Lite GPS

Yes, I know that NMEA is standard. I assumed that your board was also putting out proprietary messages.sounds like not. Joe Gray W5JG On Nov 25, 2014 2:50 PM, "S. Jackson via time-nuts" wrote: > NMEA is a company-independent format.. and the uBlox application is nice. > > > In a message dated

Re: [time-nuts] LTE Lite SkyTraq chip info

Thanks for the link. The Navspark also uses a Venus GPS, but I don't know if it the same one. I can't look it up at the moment. Joe Gray W5JG On Nov 25, 2014 3:02 PM, "paul swed" wrote: > Here is a link to a company that at least shares details of the SkyTraq > venus 8 chip on the LTE-Lite. The

Re: [time-nuts] 10 MHz Filters

Perry, Just three days ago, I posted about my using transformers from Ethernet cards. I also summarized the results of some measurements using the spectrum analyzer. There was only one response, so it seems that what I posted was widely ignored. Dave M - good find on Electronic Goldmine. Joe Gr

Re: [time-nuts] Minicircuits 10% discount in December

Mouser carries a selection from Fair-Rite. They don't make it easy to find a specific part number, however. http://www.mouser.com/Fair-Rite/Passive-Components/EMI-RFI-Components/EMI-RFI-Suppressors-Ferrites/Ferrite-Toroids-Ferrite-Rings/_/N-bw7t9?P=1z13m3cZ1yxh9di Joe Gray W5JG On Thu, Nov 27,

Re: [time-nuts] WTT New Lucent GPSDO set

Yellow fin? Are we talking tuna? Joe Gray W5JG On Sat, Nov 29, 2014 at 7:08 PM, Perry Sandeen via time-nuts wrote: > List, > My two new OEM Lucent sets arrived today. As I suspected from reading the > previous posts, they are a total kettle of fish different from the older > *yellow finned*

Re: [time-nuts] tcxo

http://www.romanblack.com/xoven.htm Joe Gray W5JG On Sun, Dec 7, 2014 at 1:53 PM, folkert wrote: > Hi, > > I'm experimenting a bit with time keeping. > For that I use cheap low power hardware like raspberry pies and > arduinos. > I noticed that the accuracy of a crystal makes a big difference.

[time-nuts] Another GPSDO

I think I have finally graduated to Junior Time Nut. I now have three GPSDO's. The trusty Z3801A I have had for years. The LTE-Lite is recent. The Lucent 2-box unit just arrived today. Maybe I'll finally know what time it is :-) This Lucent is much smaller than I thought it would be. Slightly wide

[time-nuts] Nortel Trimble GPSDO

Did I miss the discussion, or hasn't anyone mentioned this unit on ebay? With a timing antenna, it looks like a good deal. Nortel Trimble NTBW50AA GPSTM 10MHz Oscillator GPSDO + Antenna &Acc. Thunderbolt Item 301424570443 Joe Gray W5JG ___ time-nuts ma

Re: [time-nuts] Another GPSDO

nts are most likely NOS you will need to let it cook in > 30 days. I now have two units and they do match up well to the 3801. But > they did need to age. Just a heads up. > It is nice to see them line up pretty well. > Regards > Paul > WB8TSL > > On Tue, Dec 9, 2014 at

Re: [time-nuts] Nortel Trimble GPSDO

that a fellow Time-nut clued me in. I had seen the posts and > ignored them as Just another GPSDO. > Regards > Paul > WB8TSL > > On Tue, Dec 9, 2014 at 8:53 PM, Joseph Gray wrote: > >> Did I miss the discussion, or hasn't anyone mentioned this unit on >> eb

Re: [time-nuts] Another GPSDO

en minutes later, it is 2.77e-10 high. Joe Gray W5JG On Wed, Dec 10, 2014 at 5:05 AM, Bob Camp wrote: > Hi > > The antenna connectors on the front of the KS box are TNC's > > Bob > >> On Dec 9, 2014, at 9:13 PM, Joseph Gray wrote: >> >> Paul, >&

Re: [time-nuts] Another GPSDO

you can watch it do the same thing (now compared to the Lucent) > as it warms up. > > Best to leave all theses OCXO based boxes on all the time. > > Bob > >> On Dec 12, 2014, at 9:17 PM, Joseph Gray wrote: >> >> Just an update. >> >> I found that

Re: [time-nuts] KS-24361 quirk

I haven't checked the PPS yet, but the 15 MHz from the standby unit is off on my setup. Joe Gray W5JG On Sat, Dec 13, 2014 at 9:55 PM, Hal Murray wrote: > Can somebody confirm that the PPS and 15 MHz on the standby unit are disabled? > > Does anybody understand how/why they do things that way?

Re: [time-nuts] Which First GPSDO to buy?

Do you have the details on your stripped down version posted somewhere accessable? Joe Gray W5JG On Sat, Dec 13, 2014 at 10:47 PM, Chris Albertson wrote: > I tried to see just how simple, low cost and self contained I could make a > GPSDO. I started with the Lars Walenius design then removed e

Re: [time-nuts] Which First GPSDO to buy?

I don't mean to "one up" Chris, but if you are looking for inexpensive, I have bought the same Pro Mini from this seller for $2.58. Like Chris says, you can't buy the parts this for this. And if you need the 3.3 VDC version: http://www.ebay.com/itm/191182699659 I bought six of the Pro Mini's from

Re: [time-nuts] Which First GPSDO to buy?

I have to watch what I'm typing a little closer. I meant to say "You can't buy the parts this cheap." Joe Gray W5JG On Sun, Dec 14, 2014 at 8:56 AM, Chris Albertson wrote: > It's not worth making a PCB, not when you can buy the whole thing already > assembled for $3 with free shipping. I use t

Re: [time-nuts] Any reason not to use one power amplifier and splitter for distribution amplifier?

My 2 cents. I just repurposed an RGB video distribution amp for use with a rubidium. The board has three EL2070 (200 MHz BW) amps, each one feeds several BNC jacks for RGB output. I only need three separate, isolated outputs, so I am feeding the rubidium into all three EL2070's and only taking one

[time-nuts] Arduino GPIB

I thought everyone here would find this of interest. I stumbled across it a few days ago on the 'net. It is a Prologix GPIB-USB compatible made with an Arduino Uno. http://egirland.blogspot.com/2014/03/arduino-uno-as-usb-to-gpib-controller.html Like on his web site, I just took a cheap GPIB cable

[time-nuts] T.I. questions

Sorry for the simple questions. Old hands can simply ignore this message if it bothers you. I have an HP 5328A that I have pieced together from broken units. As soon as I make a ribbon cable for the GPIB card, I want to use it for T.I. measurements. I know it isn't nearly as good as a 5370, but it

Re: [time-nuts] T.I. questions

Oops, I missed a digit on that last email. it should be 10,000 s average for 100 ps resolution. Joe Gray W5JG On Wed, Feb 4, 2015 at 1:58 PM, Joseph Gray wrote: > Sorry for the simple questions. Old hands can simply ignore this > message if it bothers you. > > I have an HP 5328A

Re: [time-nuts] HPZ3801 Failure

Wes, I just checked and KO4BB already has the power supply info. http://www.ko4bb.com/manuals/index.php?dir=02_GPS_Timing/Z3801 Joe Gray W5JG On Thu, Feb 4, 2016 at 5:21 PM, paul swed wrote: > Daves absolutely correct about working around bad supplies. > The reason for the preregulator is th

Re: [time-nuts] HPZ3801 Failure

ng the GPS board went bad. I'll have to see if they are still available on ebay. After decades of use, I just can't understand why these things fail :-) Too many projects. Joe Gray W5JG On Thu, Feb 4, 2016 at 8:09 PM, Joseph Gray wrote: > Wes, > > I just checked and KO4BB

[time-nuts] Cheap GPSDO's

I searched the list archives and found some discussion mid-to-late last year about several inexpensive GPSDO's made by bg7tbl. It seems that all of the better models (according to discussion on the EEVBlog forum) are gone. I do find two similar units currently listed: http://www.ebay.com/itm/2521

[time-nuts] Not so cheap GPSDO's

Moving upscale to more well known models that cost quite a bit more, I see several Z3805A units. It looks like more than one type of OCXO was used in these. Which variant would you recommend? The less expensive Z3805A's look like they have been beat to crap, before or after being pulled from the s

[time-nuts] HP 10811

I have a spare 10811 that I want to setup as a standalone reference. Since it is a double oven unit, should I put it and the power supply in just a single walled plastic or metal box? Should I make air vents or not? Going to extremes, can I put the OCXO inside a thick Styrofoam box with no air flow

[time-nuts] Calibration procedures - what is normal?

I sent my HP 3457A in for cal. I should be getting it back next week. I won't mention where I sent it, but it wasn't Keysight (I don't like that name). I recently changed the SRAM battery and purposely did not save the cal constants. I bought the meter second hand and it wasn't in spec when I bough

Re: [time-nuts] Calibration procedures - what is normal?

On Fri, Feb 12, 2016 at 3:43 PM, Richard (Rick) Karlquist wrote: > I left Agilent just before the split, but I don't know > anyone there who liked that name. Or the logo :-) Another recent name change (acquisition) that is even worse is Aeroflex to Cobham. I realize that Cobham is probably a fa

Re: [time-nuts] Calibration procedures - what is normal?

rkby (Kirkby Microwave Ltd) wrote: > On 12 Feb 2016 21:12, "Joseph Gray" wrote: >> >> I sent my HP 3457A in for cal. I should be getting it back next week. >> I won't mention where I sent it, but it wasn't Keysight (I don't like >> that name). I

[time-nuts] SR620

OK, who got the SR620 with the "test error 34"? From looking at the manual, it may simply be user error and the instrument may be just fine. If you are the buyer, I hope that is true and that you got a bargain. I took a stab at buying it, but wasn't willing to chance too much, in case there was som

[time-nuts] SR620 testing

Finally got an SR620 at a decent price. I'm going through the Functional Tests and the Performance Tests now. So far, I have two anomalies. Pg 62 Functional Test - EXT input. When I vary the EXT trigger knob, I don't get the trigger LED, except that it flashes briefly at one spot as I move the kno

Re: [time-nuts] SR620 testing

Ignore the problem with EXT trigger. I did a factory reset and now it is working. I should have thought to reset it to begin with. Joe Gray W5JG On Mon, Feb 22, 2016 at 8:14 PM, Joseph Gray wrote: > Finally got an SR620 at a decent price. I'm going through the > Functional Te

Re: [time-nuts] SR620 testing

I don't think I would use the XY output, but I'm sure that this tilted and overlaid text is not correct. https://dl.dropboxusercontent.com/u/19599147/XY%20mode.jpg Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to http

[time-nuts] Z3801A holdover

I just took a look at my Z3801A that has been in holdover for some time. I have been too busy to do anything about it until now. Before looking at the receiver stats just now, my first guess was that the Oncore GPS board went bad. However, I see that it is currently tracking 4 sats. I also see tha

[time-nuts] Serial-Ethernet

I just thought I'd report about a serial to Ethernet interface I just bought. I got one of these: http://www.amazon.com/gp/product/B00ATV2DX2 At the moment it is hooked up to my Z3801A and I am using Z38XX.exe from across the network. Using the included software and driver, I have the RS232 port

Re: [time-nuts] Z3801A holdover

the unit has maxed out the EFC voltage one way. Joe Gray W5JG On Thu, Feb 25, 2016 at 1:54 AM, Artek Manuals wrote: > On 2/24/2016 11:37 PM, Joseph Gray wrote: >> >> I just took a look at my Z3801A that has been in holdover for some >> time. I have been too busy to do anythi

Re: [time-nuts] Serial-Ethernet

or have I tried these specific items. > But they are inexpensive and look worthwhile. OTOH, I'm nervous about any > networking product made in CN even if its web interface says "IOT Experts" > and "Be Honest, Do Best!"... > > /tvb > > - Original Mess

Re: [time-nuts] Serial-Ethernet

tried these specific items. > But they are inexpensive and look worthwhile. OTOH, I'm nervous about any > networking product made in CN even if its web interface says "IOT Experts" > and "Be Honest, Do Best!"... > > /tvb > > - Original Message -

Re: [time-nuts] Z3801A holdover

ut with >> only 4 sats and with low signal strength. >> >> I then replaced the GPS receiver and now all is well. It found itself, 8 >> sats, good signal strength, correct date and time, as compared to the TBolt. >> >> So, the GPS receiver might be on the

Re: [time-nuts] Serial-Ethernet

Dave, I am running Win7 64-bit. Joe Gray W5JG On Thu, Feb 25, 2016 at 1:57 AM, Artek Manuals wrote: > On 2/25/2016 12:01 AM, Joseph Gray wrote: >> >> I just thought I'd report about a serial to Ethernet interface I just >> bought. I got one of these: >> >

Re: [time-nuts] Inside a CTS 1960017 OCXO

Nice teardown. I was looking at that listing just yesterday. I am tempted, but don't know what I'd do with 40. The real question is, how do they perform? Joe Gray W5JG On Feb 27, 2016 9:48 AM, "Daniel Watson" wrote: > Hi, > > I'm sure many of you are tracking the cheap CTS 10MHz OCXOs available

Re: [time-nuts] FW: Instrument BASIC

All this talk of Instrument BASIC brings up a question. Is the Windows version "out there" somewhere? I know you can't buy it any more. Joe Gray W5JG On Sun, Feb 28, 2016 at 5:11 PM, Daun Yeagley wrote: > Hi Magnus > > My memory is a bit faded on this, but the Instrument Basic on the 894xx is

[time-nuts] I am a nut

I just got an HP 8920B service monitor to replace what I had before. It has the High Stability oscillator option. After running the self tests, I was doing a quick check of the internal reference. With my frequency counter locked to a GPSDO, I see that the 8920B reference is 0.2 Hz high. OMG! I'd a

Re: [time-nuts] SoftMark USB to GPIB converter

>From all accounts, the Softmark unit is pretty useless. Depending on which software you will use, you might consider a Prologix. Also, there are quite a few Agilent USB-GPIB converters on ebay. Although I understand that most of the ones selling as "new" are fakes. I ordered a "used" one. When I h

Re: [time-nuts] Serial-Ethernet

> And, if you have a couple of 422 devices, consider the economics of a 4-port > unit like: > > http://www.ebay.com/itm/301881123530 > > I have no affiliation with any seller, nor have I tried these specific items. > But they are inexpensive and look worthwhile. OTOH, I'm nervous about any > net

Re: [time-nuts] I am a nut

I'll probaly not touch it. The reference is certainly good enough for any radio repair. I just thought it was funny that at 0.2 Hz, my first impulse was to "fix" it. Joe Gray W5JG On Wed, Mar 2, 2016 at 9:57 AM, Chuck Harris wrote: > Speaking of Wavetek 3000's: They are choc-O-block full of >

Re: [time-nuts] Best Rubidium Frequency Standard

> Or, perhaps not. The two working TSD12s that I see on eBay (apparently > the same as the PRS-10 except the lock flag is set to 3 instead of 1 and > which can be reset) Would you elaborate on this? I Googled for TSD12 and except for the auction listings, found nothing. Joe Gray

Re: [time-nuts] BG7TBL GPS Disciplined Source

There is a long thread over on the EEVblog forum about the various versions made by BG7TBL. You can match the date and pictures with what you have. Joe Gray W5JG On Sun, Mar 13, 2016 at 9:47 PM, Gedas wrote: > Hello to the group. I am a new member and 1st wanted to say hello. I also > wanted to

Re: [time-nuts] Serial-Ethernet

On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: > > And, if you have a couple of 422 devices, consider the economics of a 4-port > unit like: > > http://www.ebay.com/itm/301881123530 As promised, I am reporting on the USR-N540, 4-serial-port to Ethernet box that Tom linked to. I had origina

[time-nuts] Lucent PPS

Although I have had this GPSDO operating continuously for several months, this is the first time I have looked at the serial output. The Status information looks OK to me, but should the PPS be jumping around this much? I can't compare it to my Z3801A as I haven't gotten around to fixing it yet (st

[time-nuts] Difference between Oncore models

I understand that the Oncore GPS in the Lucent units is a newer module that tracks eight satellites, vs the older Oncore in the Z3801A that only tracks six satellites. I decided to do a re-survey with my Z3801A that has been in holdover for some time, just as a test. Watching the status screens fr

Re: [time-nuts] Z3801A EEPROM

cently because of my troubleshooting a flakey Z3801A and the fact that I traded for another Z3801A. Joe Gray W5JG On Fri, Mar 18, 2016 at 3:42 PM, Magnus Danielson wrote: > Joe, > > On 03/18/2016 02:33 AM, Joseph Gray wrote: >> >> Referring to this old post: >> >> https://

Re: [time-nuts] Z3801A recovering

old as these things are, it wouldn't surprise me if some were bad. Joe Gray W5JG On Fri, Mar 18, 2016 at 8:21 AM, John Green wrote: > Joe, I'd be interested in knowing what you find out. My Z3801 is acting a > lot like yours. It is currently locked, but. > > On Thu

[time-nuts] Z3801A recovering

As I mentioned a while back, my trusty Z3801A, which has worked well for several years, went into holdover some time ago and stayed there. Until recently, I haven't had time to look into this. About 20 days ago, I did power cycle it to see if that made a difference. It did not. In the middle of th

Re: [time-nuts] Z3801A recovering

software are you running? > > I would power the unit down and let it sit for 24 hours and then do the two > commands above. > > What software are you running? > > Dave > NR1DX > > > > > > On 3/16/2016 7:38 PM, Joseph Gray wrote: >> >> As I mentioned

[time-nuts] Lucent GPS UTC confusion

I noticed on the Status screen that the Lucent unit said the PPS was locked to GPS, not UTC, as the Z3801A is. So, I issued ":DIAG:GPS:UTC 1" and "TST?" to correct this. But things are not as I expected. Displaying the clock for both GPSDO's in Z38xx now shows them to be 17 seconds different, whic

Re: [time-nuts] Serial-Ethernet

e all you need to come up with proper numbers. A simple scale > error can make things look much better or much worse than they actually are. > > Bob > >> On Mar 16, 2016, at 7:54 PM, Joseph Gray wrote: >> >> Well, the 4-port serial to Ethernet converter has been ru

Re: [time-nuts] Serial-Ethernet

. From the look of this graph, it seems to be performing quite well. https://dl.dropboxusercontent.com/u/19599147/Lucent%20Adev.png Joe Gray W5JG On Tue, Mar 15, 2016 at 7:05 PM, Joseph Gray wrote: > On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: >> >> And, if you hav

[time-nuts] Z3801A EEPROM

Referring to this old post: https://www.febo.com/pipermail/time-nuts/2011-December/061718.html In particular, this statement: "but If the RTC in the receiver is not set or its battery has failed, and the reference year stored in EEPROM is also wrong, the receiver may select the wrong 20-year win

Re: [time-nuts] Lucent GPS UTC confusion

ar 17, 2016 at 7:27 AM, Paul wrote: > > On Wed, Mar 16, 2016 at 8:29 PM, Joseph Gray wrote: >> >> I noticed on the Status screen that the Lucent unit said the PPS was >> locked to GPS, not UTC, as the Z3801A is. So, I issued ":DIAG:GPS:UTC >> 1" and "T

[time-nuts] Microsonics TCXO

I got my hands on some of these. https://dl.dropboxusercontent.com/u/19599147/TCXO%20Top.jpg https://dl.dropboxusercontent.com/u/19599147/TCXO%20Bottom.jpg A search finds other Microsonics units, but not this one. I can't find any information on what voltage to feed this. Does anyone know? I kn

Re: [time-nuts] Lucent GPS UTC confusion

Hal, I did the "*TST?" command, which seemed to do a power cycle. The Status screen shows "GPS 1PPS Synchronized to UTC". Joe Gray W5JG On Wed, Mar 16, 2016 at 11:30 PM, Hal Murray wrote: > > jg...@zianet.com said: >> I noticed on the Status screen that the Lucent unit said the PPS was locked

Re: [time-nuts] Difference between Oncore models

h successive power cycle, I have one receiver > that will now fail within 20 minutes predictably. > > Dave > NR1DX > > > > > On 3/16/2016 7:03 AM, Joseph Gray wrote: >> >> I understand that the Oncore GPS in the Lucent units is a newer module >> that tr

[time-nuts] Oncore battery

Can anyone recommend a rechargeable lithium coin cell that is a direct replacement for the ones that come on some Oncore receivers? Something I can order from Mouser or Digikey, if possible. Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] Z3801A recovering

than the VP modules. I may be able to use the UT+ modules elsewhere. Joe Gray W5JG On Fri, Mar 18, 2016 at 8:21 AM, John Green wrote: > Joe, I'd be interested in knowing what you find out. My Z3801 is acting a > lot like yours. It is currently locked, but. > > On Thu, Mar 17,

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