Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
Just to close this one out, I was able to get the Ref-0 and Ref-1 working standalone with 10Mhz on both using my spare Motorola UT+ GPS. Lots of help from lots of people and especially Peter Garde who stuck with me to the end. It would be nice if all this was in one place or maybe one combined document. Anyway, now I have two, so I’ll be guessing which one is right half the time. Thanks, Jerry ___ 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] Lucent RFTG-u REF0-REF1 cable
Is there an easy way to get 10Mhz out of the REF1? Next time I am using my electric screwdriver to take this apart. I can’t believe how many bolts it has. I used a screwdriver that turns double in reverse, pretty cool tool, but even then it took forever. > On Nov 15, 2017, at 7:00 AM, Bob Camp wrote: > > Hi > > At some very basic level, the GPSDO needs to decide when to go into or come > out of holdover. That decision often involves initial setup of the GPS module > and > subsequent monitoring of the module. The risk in swapping modules is always > tripping over an obscure IF statement somewhere that does not work right with > the “new” module. On the Lucent boxes, there is a survey process “up front’ > that > likely gets tangled when you change modules ….. > > Bob > >> On Nov 15, 2017, at 1:27 AM, Mark Sims wrote: >> >> It might be eye candy, but is very useful eye candy when coupled with the >> satellite SNR values. A GPSDO does not NEED any communications to the GPS >> or the outside world, but EVERY commercial one does support it. >> >> The GPSDO firmware asks for the sat info from the GPS (so it can show it in >> the SYST:STAT status page) and, if it doesn't get it, it assumes the GPS is >> defective, crawls into a corner, and sobs. >> >> >> >>> Isn’t info about what satellites are where, just eye candy and irrelevant >>> to a real GPSDO? >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
Hi At some very basic level, the GPSDO needs to decide when to go into or come out of holdover. That decision often involves initial setup of the GPS module and subsequent monitoring of the module. The risk in swapping modules is always tripping over an obscure IF statement somewhere that does not work right with the “new” module. On the Lucent boxes, there is a survey process “up front’ that likely gets tangled when you change modules ….. Bob > On Nov 15, 2017, at 1:27 AM, Mark Sims wrote: > > It might be eye candy, but is very useful eye candy when coupled with the > satellite SNR values. A GPSDO does not NEED any communications to the GPS or > the outside world, but EVERY commercial one does support it. > > The GPSDO firmware asks for the sat info from the GPS (so it can show it in > the SYST:STAT status page) and, if it doesn't get it, it assumes the GPS is > defective, crawls into a corner, and sobs. > > > >> Isn’t info about what satellites are where, just eye candy and irrelevant to >> a real GPSDO? > ___ > 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] Lucent RFTG-u REF0-REF1 cable
Am 15.11.2017 um 05:06 schrieb Jerry Hancock: problem solved. I also have to get the 10Mhz out of the REF1 but that looks easy. It is best to just double the 5 MHz that comes straight from the MTI-260 oven. < http://www.hoffmann-hochfrequenz.de/downloads/DoubDist.pdf > regards, Gerhard ___ 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] Lucent RFTG-u REF0-REF1 cable
It's been a few years since I looked at this, but it seems to me that the message from the receiver to the time processors included an estimate of the reliability of the satellite data. That estimate depends on satellites being in the predicted positions. If there is an error, the time data is marked as invalid. The old messages had 6 satellites, and the newer messages had 8. The messages were identical, except that the newer message reported 2 more satellites. An older time processor would not have been able to handle the new 8 sat message. So, no, you can't mix old and new RFTG modules. If this sounds like I know what I'm saying, you may be disappointed. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Tim Shoppa Sent: Tuesday, November 14, 2017 9:53 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable Isn't info about what satellites are where, just eye candy and irrelevant to a real GPSDO? Tweaks to the elevation mask ought to be measurable in the PPS quality (if they aren't then they're irrelevant). Tim ___ 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] Lucent RFTG-u REF0-REF1 cable
I can’t find the instructions on how to make the REF1 work without the REF0. Other than adding the 10Mhz, do I have to do anything to it to enable it to run without the REF0? > On Nov 14, 2017, at 7:52 PM, Tim Shoppa wrote: > > Isn’t info about what satellites are where, just eye candy and irrelevant to > a real GPSDO? > > Tweaks to the elevation mask ought to be measurable in the PPS quality (if > they aren’t then they’re irrelevant). > > Tim > >> On Nov 14, 2017, at 10:39 PM, Mark Sims wrote: >> >> The M12 uses different commands for sending a lot of the data since it is >> tracking more sats and the old commands were limited to 6 or 8 sats. I >> doubt it would work the the RFTG. There might also be a 3V vs 5V problem. >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
It turns out I don't have an M12+ in the TAPR GPS. I always knew I had an older model. I checked the numbers and pictures and it it just what I need, an Oncore UT+. So the first thing I need to do is get my REF1 standalone and then add this GPS to the REF0 and problem solved. I also have to get the 10Mhz out of the REF1 but that looks easy. Thanks for all the pointers. Jerry On 14 Nov 2017 at 17:33, Jerry Hancock wrote: > Mark, I went back and looked at the PDF from Peter and the Oncore GPS looks > quite a bit > like the M12+ I have. Peter mentions something about firmware in the Oncore. > Anyone > know if there would be an issue between using the Oncore and the 12+? > > If this works then I can just drop in my 12+, remove a few jumpers and Bob's > my uncle. > > I sent Peter a note. Is he active on this forum? > > Thoughts? > > Jerry > > On 15 Nov 2017 at 0:38, Mark Sims wrote: > > > There is also a nice pdf out there by Peter Garde that tells how to add a > > GPS receiver to the non-GPD RFTG. It involves moving around 6 0-ohm (?) > > resistors and plugging in an old Motorola (UT+) receiver. I found the pdf > > on EEVBLOG. > > > > https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwiq3pafqr_XAhVFOyYKHT-MAr0QFggmMAA&url=https%3A%2F%2Fwww.eevblog.com%2Fforum%2Ftestgear%2Feconomical-option-for-precision-frequency-reference%2F%3Faction%3Ddlattach%3Battach%3D172662&usg=AOvVaw35zt-sQAGprChGTOHL9aFV > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
Isn’t info about what satellites are where, just eye candy and irrelevant to a real GPSDO? Tweaks to the elevation mask ought to be measurable in the PPS quality (if they aren’t then they’re irrelevant). Tim > On Nov 14, 2017, at 10:39 PM, Mark Sims wrote: > > The M12 uses different commands for sending a lot of the data since it is > tracking more sats and the old commands were limited to 6 or 8 sats. I > doubt it would work the the RFTG. There might also be a 3V vs 5V problem. > ___ > 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] Lucent RFTG-u REF0-REF1 cable
Mark, I went back and looked at the PDF from Peter and the Oncore GPS looks quite a bit like the M12+ I have. Peter mentions something about firmware in the Oncore. Anyone know if there would be an issue between using the Oncore and the 12+? If this works then I can just drop in my 12+, remove a few jumpers and Bob's my uncle. I sent Peter a note. Is he active on this forum? Thoughts? Jerry On 15 Nov 2017 at 0:38, Mark Sims wrote: > There is also a nice pdf out there by Peter Garde that tells how to add a GPS > receiver to the non-GPD RFTG. It involves moving around 6 0-ohm (?) > resistors and plugging in an old Motorola (UT+) receiver. I found the pdf > on EEVBLOG. > > https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwiq3pafqr_XAhVFOyYKHT-MAr0QFggmMAA&url=https%3A%2F%2Fwww.eevblog.com%2Fforum%2Ftestgear%2Feconomical-option-for-precision-frequency-reference%2F%3Faction%3Ddlattach%3Battach%3D172662&usg=AOvVaw35zt-sQAGprChGTOHL9aFV > ___ > 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] Lucent RFTG-u REF0-REF1 cable
I remember seeing that pdf and thinking that the Motorola UT+ mounts look a lot like the Motorola 12+ and was wondering if would just fit. I'll go back and look. Thanks. On 15 Nov 2017 at 0:38, Mark Sims wrote: > There is also a nice pdf out there by Peter Garde that tells how to add a GPS > receiver to the non-GPD RFTG. It involves moving around 6 0-ohm (?) > resistors and plugging in an old Motorola (UT+) receiver. I found the pdf > on EEVBLOG. > > https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwiq3pafqr_XAhVFOyYKHT-MAr0QFggmMAA&url=https%3A%2F%2Fwww.eevblog.com%2Fforum%2Ftestgear%2Feconomical-option-for-precision-frequency-reference%2F%3Faction%3Ddlattach%3Battach%3D172662&usg=AOvVaw35zt-sQAGprChGTOHL9aFV > ___ > 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] Lucent RFTG-u REF0-REF1 cable
Hi If you compare the PPS output of a simple GPS module (any of them) to a properly functioning GPSDO, you will see jumps in the module output. They are a function of the way all of the modules quantize the PPS signal. For higher resolution on the PPS you would have to use the sawtooth correction message to somehow modify the PPS signal. Some GPSDO’s slip phase on the PPS as part of the alignment process so you can never say that there are only jumps in a bare module. GPSDO’s also steer frequency to keep the PPS aligned. The damping (lag) in this process results in errors both in frequency and in the PPS edge. So, none of it is perfect (this is Time Nuts …). All of it has “issues” if you look close enough. A Frequency Nut would complain about some things and a Time (only) Nut wold complain about others. That’s not true in an absolute sense, but it is true in terms of what each would optimize for on a real world device. Bob > On Nov 14, 2017, at 12:55 PM, Jerry Hancock wrote: > > Thomas, Yes, thank you, I read the work Dan posted. > > I have this TAPR GPS with the M12+ board in it that I received for free after > machining the end plates and the unused standby REF0 or REF1, can’t remember > which has the GPS in it. I would like to have another 10Mhz standard in my > office. I also have an OCXO out of my Tektronix 11301 I was given but that > uses a trimmer that I can’t really mod to discipline so that option of GPS + > OCXO is out. So I wouldn’t mind figuring out a way to take the TAPR GPS and > feed it into the spare REF unit not unlike what the other REF unit is doing. > I would then have to fake some data per Dan’s site. Having written this, I > just might do this project now that I think about it. I could then also use > an STM32F7 board with display to post a clock as well. I guess I would also > have to tap off the (debatably dirty) 10Mhz signal internally in the one that > is missing. > > I’m going to go back and reread Dan’s paper. There were questions about the > sawtooth IIRC and I remember seeing it when I compared the output of the TAPR > 1PPS vs the Lucent 1PPS as they would jump phase by successive increments and > then bounce back. I don’t think we ever determined which one was moving but > I remember someone telling me it was most likely related to a sawtooth in the > discipline. I don’t know enough about these things to say for sure, but > watching the 1PPS vs the other made me start to wonder about the absolute > phase accuracy of those signals. You would have thought they would have > been perfectly in phase, no? I go to bed at night with the confidence that > the free TAPR GPS is the culprit vs my Lucent that which cost me $200 when > all done. > > So in summary, I have to plug the GPS REF unit, tap-off the 10Mhz someplace > on one or the other, feed the second REF unit with my TPAR GPS then also send > it some text (which is known by Dan) and I should get a second disciplined > 10Mhz unit. This will take me a few weeks during which I will get bored and > forget why I was doing it in the first place. So please remind me when I > post back. > > Jerry > > >> On Nov 14, 2017, at 8:50 AM, Thomas Petig wrote: >> >> Hi Jerry, >> the 15 MHz is disabled by default, just bridging some pins enables the >> output: >> http://syncchannel.blogspot.se/2015/11/denuo-gps-hits-rev-b-dongles.html >> >> If you want to insert some 1PPS signal to discipline it, you need some >> fake some GPS messages. Dan has done some nice work here, a small ATTiny >> is sufficient. >> >> /Thomas, SA6CID >> >> >> On Tue, Nov 14, 2017 at 08:30:54AM -0800, Jerry Hancock wrote: >>> Bob, I thought you had to send it code, etc? I have the two units >>> with cable, etc running upstairs. I want another one for in my office >>> but the same guy only sells the REF0 and REF1 units separately now >>> without the cable. I thought about splitting the two and using this >>> other GPS unit I have (it was one of the TAPR GPS Kits) to send the >>> other one the 1pps. You’re saying all you need is a plug? I would >>> need two functioning units. >>> >>> Regards, >>> >>> Jerry >>> >>> >>> Jerry Hancock >>> je...@hanler.com >>> (415) 215-3779 >>> On Nov 14, 2017, at 8:13 AM, Bob Camp wrote: Hi If you are going to get out the soldering iron, why simply make up a plug to run the GPS unit stand alone? Keep the second unit powered down as a set of spare parts….. Yes, it does depend a bit on what you are doing with them …. Bob > On Nov 13, 2017, at 11:50 PM, Jerry Hancock wrote: > > Anyone have a spare cable for the Lucent setup? I guess I can make one > with some DB15 connectors but trying to skip the effort. > > Thanks > > Jerry > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > h
Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
Thomas, Yes, thank you, I read the work Dan posted. I have this TAPR GPS with the M12+ board in it that I received for free after machining the end plates and the unused standby REF0 or REF1, can’t remember which has the GPS in it. I would like to have another 10Mhz standard in my office. I also have an OCXO out of my Tektronix 11301 I was given but that uses a trimmer that I can’t really mod to discipline so that option of GPS + OCXO is out. So I wouldn’t mind figuring out a way to take the TAPR GPS and feed it into the spare REF unit not unlike what the other REF unit is doing. I would then have to fake some data per Dan’s site. Having written this, I just might do this project now that I think about it. I could then also use an STM32F7 board with display to post a clock as well. I guess I would also have to tap off the (debatably dirty) 10Mhz signal internally in the one that is missing. I’m going to go back and reread Dan’s paper. There were questions about the sawtooth IIRC and I remember seeing it when I compared the output of the TAPR 1PPS vs the Lucent 1PPS as they would jump phase by successive increments and then bounce back. I don’t think we ever determined which one was moving but I remember someone telling me it was most likely related to a sawtooth in the discipline. I don’t know enough about these things to say for sure, but watching the 1PPS vs the other made me start to wonder about the absolute phase accuracy of those signals. You would have thought they would have been perfectly in phase, no? I go to bed at night with the confidence that the free TAPR GPS is the culprit vs my Lucent that which cost me $200 when all done. So in summary, I have to plug the GPS REF unit, tap-off the 10Mhz someplace on one or the other, feed the second REF unit with my TPAR GPS then also send it some text (which is known by Dan) and I should get a second disciplined 10Mhz unit. This will take me a few weeks during which I will get bored and forget why I was doing it in the first place. So please remind me when I post back. Jerry > On Nov 14, 2017, at 8:50 AM, Thomas Petig wrote: > > Hi Jerry, > the 15 MHz is disabled by default, just bridging some pins enables the > output: > http://syncchannel.blogspot.se/2015/11/denuo-gps-hits-rev-b-dongles.html > > If you want to insert some 1PPS signal to discipline it, you need some > fake some GPS messages. Dan has done some nice work here, a small ATTiny > is sufficient. > > /Thomas, SA6CID > > > On Tue, Nov 14, 2017 at 08:30:54AM -0800, Jerry Hancock wrote: >> Bob, I thought you had to send it code, etc? I have the two units >> with cable, etc running upstairs. I want another one for in my office >> but the same guy only sells the REF0 and REF1 units separately now >> without the cable. I thought about splitting the two and using this >> other GPS unit I have (it was one of the TAPR GPS Kits) to send the >> other one the 1pps. You’re saying all you need is a plug? I would >> need two functioning units. >> >> Regards, >> >> Jerry >> >> >> Jerry Hancock >> je...@hanler.com >> (415) 215-3779 >> >>> On Nov 14, 2017, at 8:13 AM, Bob Camp wrote: >>> >>> Hi >>> >>> If you are going to get out the soldering iron, why simply make up a plug >>> to run the GPS unit stand alone? Keep the second unit powered down >>> as a set of spare parts….. Yes, it does depend a bit on what you are doing >>> with them …. >>> >>> Bob >>> On Nov 13, 2017, at 11:50 PM, Jerry Hancock wrote: Anyone have a spare cable for the Lucent setup? I guess I can make one with some DB15 connectors but trying to skip the effort. Thanks Jerry ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. >>> >>> ___ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
Hi Jerry, the 15 MHz is disabled by default, just bridging some pins enables the output: http://syncchannel.blogspot.se/2015/11/denuo-gps-hits-rev-b-dongles.html If you want to insert some 1PPS signal to discipline it, you need some fake some GPS messages. Dan has done some nice work here, a small ATTiny is sufficient. /Thomas, SA6CID On Tue, Nov 14, 2017 at 08:30:54AM -0800, Jerry Hancock wrote: > Bob, I thought you had to send it code, etc? I have the two units > with cable, etc running upstairs. I want another one for in my office > but the same guy only sells the REF0 and REF1 units separately now > without the cable. I thought about splitting the two and using this > other GPS unit I have (it was one of the TAPR GPS Kits) to send the > other one the 1pps. You’re saying all you need is a plug? I would > need two functioning units. > > Regards, > > Jerry > > > Jerry Hancock > je...@hanler.com > (415) 215-3779 > > > On Nov 14, 2017, at 8:13 AM, Bob Camp wrote: > > > > Hi > > > > If you are going to get out the soldering iron, why simply make up a plug > > to run the GPS unit stand alone? Keep the second unit powered down > > as a set of spare parts….. Yes, it does depend a bit on what you are doing > > with them …. > > > > Bob > > > >> On Nov 13, 2017, at 11:50 PM, Jerry Hancock wrote: > >> > >> Anyone have a spare cable for the Lucent setup? I guess I can make one > >> with some DB15 connectors but trying to skip the effort. > >> > >> Thanks > >> > >> Jerry > >> ___ > >> time-nuts mailing list -- time-nuts@febo.com > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > > > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
Hi Just going by memory (never a good thing ….); You can make the GPS unit believe that it has a “slave” present *and* that the slave is not working properly. It’s all done with logic levels. In the “slave down” mode, the unit with the GPS puts out the 15 MHz and all the messages. The thing you loose is the (dirty) 10 MHz output from the slave. Bob > On Nov 14, 2017, at 11:30 AM, Jerry Hancock wrote: > > Bob, I thought you had to send it code, etc? I have the two units with > cable, etc running upstairs. I want another one for in my office but the > same guy only sells the REF0 and REF1 units separately now without the cable. > I thought about splitting the two and using this other GPS unit I have (it > was one of the TAPR GPS Kits) to send the other one the 1pps. You’re saying > all you need is a plug? I would need two functioning units. > > Regards, > > Jerry > > > Jerry Hancock > je...@hanler.com > (415) 215-3779 > >> On Nov 14, 2017, at 8:13 AM, Bob Camp wrote: >> >> Hi >> >> If you are going to get out the soldering iron, why simply make up a plug >> to run the GPS unit stand alone? Keep the second unit powered down >> as a set of spare parts….. Yes, it does depend a bit on what you are doing >> with them …. >> >> Bob >> >>> On Nov 13, 2017, at 11:50 PM, Jerry Hancock wrote: >>> >>> Anyone have a spare cable for the Lucent setup? I guess I can make one >>> with some DB15 connectors but trying to skip the effort. >>> >>> Thanks >>> >>> Jerry >>> ___ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
Bob, I thought you had to send it code, etc? I have the two units with cable, etc running upstairs. I want another one for in my office but the same guy only sells the REF0 and REF1 units separately now without the cable. I thought about splitting the two and using this other GPS unit I have (it was one of the TAPR GPS Kits) to send the other one the 1pps. You’re saying all you need is a plug? I would need two functioning units. Regards, Jerry Jerry Hancock je...@hanler.com (415) 215-3779 > On Nov 14, 2017, at 8:13 AM, Bob Camp wrote: > > Hi > > If you are going to get out the soldering iron, why simply make up a plug > to run the GPS unit stand alone? Keep the second unit powered down > as a set of spare parts….. Yes, it does depend a bit on what you are doing > with them …. > > Bob > >> On Nov 13, 2017, at 11:50 PM, Jerry Hancock wrote: >> >> Anyone have a spare cable for the Lucent setup? I guess I can make one with >> some DB15 connectors but trying to skip the effort. >> >> Thanks >> >> Jerry >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Lucent RFTG-u REF0-REF1 cable
Hi If you are going to get out the soldering iron, why simply make up a plug to run the GPS unit stand alone? Keep the second unit powered down as a set of spare parts….. Yes, it does depend a bit on what you are doing with them …. Bob > On Nov 13, 2017, at 11:50 PM, Jerry Hancock wrote: > > Anyone have a spare cable for the Lucent setup? I guess I can make one with > some DB15 connectors but trying to skip the effort. > > Thanks > > Jerry > ___ > 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] Lucent RFTG-u REF0-REF1 cable
Yes, the cable is pretty easy, basically DB15 pin 1 to 15; 2-14; 3-13; 4-12; 5-11; 6-10; 7-9 and 8 to 8 followed by 9-7; 10-6; 11-5; 12-4; 13-3; 14-2; 15-1. If you do a search for "Lucent RFTG-U" and look around on time-nuts you will find it laid-out in a little more detail. I was just looking again and it always takes some screwing around to find it. If all else fails, send me a note and I’ll dig it up when I go to make mine. This will be my second set of the units. They just seem to hum along since I’ve had them 18 months. I use a passive outboard distribution unit and can easily drive 16 devices. Regards, Jerry > On Nov 13, 2017, at 8:50 PM, Jerry Hancock wrote: > > Anyone have a spare cable for the Lucent setup? I guess I can make one with > some DB15 connectors but trying to skip the effort. > > Thanks > > Jerry > ___ > 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] Lucent RFTG-u REF0-REF1 cable
I need to make one, is there a schematic of the interface available? Dave Thompson > On Nov 13, 2017, at 22:50, Jerry Hancock wrote: > > Anyone have a spare cable for the Lucent setup? I guess I can make one with > some DB15 connectors but trying to skip the effort. > > Thanks > > Jerry > ___ > 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.
