Re: [time-nuts] HP Z3801 RB fun
Magnus and Bob. I appreciate the comments and the suggestions are easily implemented. Technical term "Piece-O-cake". One other note the the Z3801 uses a more negative voltage to raise frequency while the Piezo and FRS use a positive voltage. Absolutely agree on the offset. Been trying to do that. However the FRS C I am using wants seems to require +.6V to be on frequency. So because of its age there may be a real issue. I have 3 others and may grab another to see how it behaves. Also have some EGGs and FEI 5680s. Though those as I recall are digital control. But back to the basics first. Regards Paul. WB8TSL On Wed, Dec 28, 2016 at 6:32 PM, Bob Camp wrote: > Hi > > Ummm ….. er …. > > The 10811 that is used in the Z3801 has a *larger* electrical tuning range > than the standard > 10811 not a smaller one. It’s tuning range and the TBolt OCXO’s tuning > range are > very similar. > > Bob > > > On Dec 28, 2016, at 6:22 PM, Magnus Danielson < > mag...@rubidium.dyndns.org> wrote: > > > > Paul, > > > > We just want to help you with that curiosity, it sounds like a fun > little project. :) > > > > The FRS-C [1] has a range of +/- 1E-9 over 0-5V, so EFC sensitivity is > 4E-10/V. > > > > The Z3801A has a range of 5.20E-10 [2] over -5V to +5V [3], so EFC > sensitivity is 5.2E-11/V. > > > > So, it looks like you need to have a gain of 8 and raise the EFC 2.5 V. > > > > Cheers, > > Magnus > > > > [1] http://www.to-way.com/tf/frs.pdf > > > > [2] http://www.leapsecond.com/pages/z3801a-efc/ > > > > [3] http://www.realhamradio.com/joe-geller.htm > > > > On 12/28/2016 11:42 PM, paul swed wrote: > >> Magnus and Bob, > >> Thank you for your response. As far as the original HO 10811 oscillator > >> goes there is some well written details on it behavior and sensitivity. > It > >> was not the same as a standard 10811. A far smaller range as I recall. > But > >> the data is there. > >> Its funny on the RB I have the EFC range from the spec sheet. It really > >> tunes from 0-5V. But I find it interesting that the best alignment with > >> other references is sub 1V. Its an old FRS C and I have others that may > >> present a more centered range. > >> > >> I'll have to compare the detials that I have on the 10811 and FRS C. > But I > >> actually pulled out a 100:1 antenuator I was using on the Piezo crystal > >> that indeed does lock. > >> > >> Goal in all of this is nothing special simply curiosity. > >> Thanks again. When I have some real numbers to share I will. > >> Regards > >> Paul > >> WB8TSL > >> > >> On Tue, Dec 27, 2016 at 10:26 PM, Bob Camp wrote: > >> > >>> Hi > >>> > >>> The loop gain (as Magnus mentions) needs to be “correct” for the Rb. > Since > >>> the firmware was written for an OCXO with a PPM(ish) trim range, > tacking it > >>> on to a PPB(ish) Rb will require everything to scale by 1000:1. That’s > 10 > >>> bits. > >>> You may (or may not) have enough resolution in the math to handle that > wide > >>> a range of gains. > >>> > >>> If it really locks, the next challenge is to get it to run out to ~ 4 > days > >>> or more on > >>> the loop. Again, the firmware may or may not be able to do this. > Unless it > >>> does, > >>> the Rb really will not lock as well as it could. > >>> > >>> With the Rb correctly locked, you still have the issue that the Rb is a > >>> 2x10^-11 > >>> device (ADEV) at 1 second and the OCXO probably is 2x10^-12 (or > better). > >>> For > >>> driving a counter with a normal gate, the Rb may not show much (if any) > >>> improvement. > >>> There is the slight chance the ADEV will get the firmware confused….. > >>> > >>> Since the firmware source is running around somewhere, you *could* dig > into > >>> all of this wonderful stuff :) > >>> > >>> Bob > >>> > >>> > On Dec 27, 2016, at 8:33 PM, paul swed wrote: > > OK so could not resist. The replacement of the HP 10811 with a PIEZO > ocxo > went very well. So in for a penny in for a pound. Why not an RB. > Having a > few around. Choice efratom FRS-c. Lot of thought went into this > choice. > >>> Not > really it was there. It has a inverse frequency to EFC voltage just > like > the piezo and opposite the HP 10811. > Well it connects runs and locks using the simple 1 opamp level ofset > and > and phase inverter. > But locked is a funny comment. According to HPsatstat and LH. Its pll > is > locked. But both scope and the LH graph shows a very slow frequency > drift > that with the offset I can make positive or negative. A cycle at 10 ns > takes quite some time about an hour compared to a TBolt and another > non > modified Z3801. At this level of resolution some things start to > become > questionable. > > I almost wonder if the modified z3801 under some level of drift > assumes > everything is locked and fine. Can it be pushed beyond expectations. I > suspect it can. > Anyhow as I say a bit of GPSDO fun. > Regards > Paul > WB8TS
Re: [time-nuts] HP Z3801 RB fun
Hi, Well, that was the data I was able to find (and I referred to TvBs page where I found it). If you have more accurate data, please share so we can get the numbers right. The Z3801A will do a least square estimate of frequency error and then translate that into an initial DAC setting assuming it knows the EFC sensitivity, and the loop will work out the rest from there (hopefully). Getting EFC in the right neighborhood is probably wise for this reason. Cheers, Magnus On 12/29/2016 12:32 AM, Bob Camp wrote: Hi Ummm ….. er …. The 10811 that is used in the Z3801 has a *larger* electrical tuning range than the standard 10811 not a smaller one. It’s tuning range and the TBolt OCXO’s tuning range are very similar. Bob On Dec 28, 2016, at 6:22 PM, Magnus Danielson wrote: Paul, We just want to help you with that curiosity, it sounds like a fun little project. :) The FRS-C [1] has a range of +/- 1E-9 over 0-5V, so EFC sensitivity is 4E-10/V. The Z3801A has a range of 5.20E-10 [2] over -5V to +5V [3], so EFC sensitivity is 5.2E-11/V. So, it looks like you need to have a gain of 8 and raise the EFC 2.5 V. Cheers, Magnus [1] http://www.to-way.com/tf/frs.pdf [2] http://www.leapsecond.com/pages/z3801a-efc/ [3] http://www.realhamradio.com/joe-geller.htm On 12/28/2016 11:42 PM, paul swed wrote: Magnus and Bob, Thank you for your response. As far as the original HO 10811 oscillator goes there is some well written details on it behavior and sensitivity. It was not the same as a standard 10811. A far smaller range as I recall. But the data is there. Its funny on the RB I have the EFC range from the spec sheet. It really tunes from 0-5V. But I find it interesting that the best alignment with other references is sub 1V. Its an old FRS C and I have others that may present a more centered range. I'll have to compare the detials that I have on the 10811 and FRS C. But I actually pulled out a 100:1 antenuator I was using on the Piezo crystal that indeed does lock. Goal in all of this is nothing special simply curiosity. Thanks again. When I have some real numbers to share I will. Regards Paul WB8TSL On Tue, Dec 27, 2016 at 10:26 PM, Bob Camp wrote: Hi The loop gain (as Magnus mentions) needs to be “correct” for the Rb. Since the firmware was written for an OCXO with a PPM(ish) trim range, tacking it on to a PPB(ish) Rb will require everything to scale by 1000:1. That’s 10 bits. You may (or may not) have enough resolution in the math to handle that wide a range of gains. If it really locks, the next challenge is to get it to run out to ~ 4 days or more on the loop. Again, the firmware may or may not be able to do this. Unless it does, the Rb really will not lock as well as it could. With the Rb correctly locked, you still have the issue that the Rb is a 2x10^-11 device (ADEV) at 1 second and the OCXO probably is 2x10^-12 (or better). For driving a counter with a normal gate, the Rb may not show much (if any) improvement. There is the slight chance the ADEV will get the firmware confused….. Since the firmware source is running around somewhere, you *could* dig into all of this wonderful stuff :) Bob On Dec 27, 2016, at 8:33 PM, paul swed wrote: OK so could not resist. The replacement of the HP 10811 with a PIEZO ocxo went very well. So in for a penny in for a pound. Why not an RB. Having a few around. Choice efratom FRS-c. Lot of thought went into this choice. Not really it was there. It has a inverse frequency to EFC voltage just like the piezo and opposite the HP 10811. Well it connects runs and locks using the simple 1 opamp level ofset and and phase inverter. But locked is a funny comment. According to HPsatstat and LH. Its pll is locked. But both scope and the LH graph shows a very slow frequency drift that with the offset I can make positive or negative. A cycle at 10 ns takes quite some time about an hour compared to a TBolt and another non modified Z3801. At this level of resolution some things start to become questionable. I almost wonder if the modified z3801 under some level of drift assumes everything is locked and fine. Can it be pushed beyond expectations. I suspect it can. Anyhow as I say a bit of GPSDO fun. Regards Paul WB8TSL ___ 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://
Re: [time-nuts] HP Z3801 RB fun
Hi Ummm ….. er …. The 10811 that is used in the Z3801 has a *larger* electrical tuning range than the standard 10811 not a smaller one. It’s tuning range and the TBolt OCXO’s tuning range are very similar. Bob > On Dec 28, 2016, at 6:22 PM, Magnus Danielson > wrote: > > Paul, > > We just want to help you with that curiosity, it sounds like a fun little > project. :) > > The FRS-C [1] has a range of +/- 1E-9 over 0-5V, so EFC sensitivity is > 4E-10/V. > > The Z3801A has a range of 5.20E-10 [2] over -5V to +5V [3], so EFC > sensitivity is 5.2E-11/V. > > So, it looks like you need to have a gain of 8 and raise the EFC 2.5 V. > > Cheers, > Magnus > > [1] http://www.to-way.com/tf/frs.pdf > > [2] http://www.leapsecond.com/pages/z3801a-efc/ > > [3] http://www.realhamradio.com/joe-geller.htm > > On 12/28/2016 11:42 PM, paul swed wrote: >> Magnus and Bob, >> Thank you for your response. As far as the original HO 10811 oscillator >> goes there is some well written details on it behavior and sensitivity. It >> was not the same as a standard 10811. A far smaller range as I recall. But >> the data is there. >> Its funny on the RB I have the EFC range from the spec sheet. It really >> tunes from 0-5V. But I find it interesting that the best alignment with >> other references is sub 1V. Its an old FRS C and I have others that may >> present a more centered range. >> >> I'll have to compare the detials that I have on the 10811 and FRS C. But I >> actually pulled out a 100:1 antenuator I was using on the Piezo crystal >> that indeed does lock. >> >> Goal in all of this is nothing special simply curiosity. >> Thanks again. When I have some real numbers to share I will. >> Regards >> Paul >> WB8TSL >> >> On Tue, Dec 27, 2016 at 10:26 PM, Bob Camp wrote: >> >>> Hi >>> >>> The loop gain (as Magnus mentions) needs to be “correct” for the Rb. Since >>> the firmware was written for an OCXO with a PPM(ish) trim range, tacking it >>> on to a PPB(ish) Rb will require everything to scale by 1000:1. That’s 10 >>> bits. >>> You may (or may not) have enough resolution in the math to handle that wide >>> a range of gains. >>> >>> If it really locks, the next challenge is to get it to run out to ~ 4 days >>> or more on >>> the loop. Again, the firmware may or may not be able to do this. Unless it >>> does, >>> the Rb really will not lock as well as it could. >>> >>> With the Rb correctly locked, you still have the issue that the Rb is a >>> 2x10^-11 >>> device (ADEV) at 1 second and the OCXO probably is 2x10^-12 (or better). >>> For >>> driving a counter with a normal gate, the Rb may not show much (if any) >>> improvement. >>> There is the slight chance the ADEV will get the firmware confused….. >>> >>> Since the firmware source is running around somewhere, you *could* dig into >>> all of this wonderful stuff :) >>> >>> Bob >>> >>> On Dec 27, 2016, at 8:33 PM, paul swed wrote: OK so could not resist. The replacement of the HP 10811 with a PIEZO ocxo went very well. So in for a penny in for a pound. Why not an RB. Having a few around. Choice efratom FRS-c. Lot of thought went into this choice. >>> Not really it was there. It has a inverse frequency to EFC voltage just like the piezo and opposite the HP 10811. Well it connects runs and locks using the simple 1 opamp level ofset and and phase inverter. But locked is a funny comment. According to HPsatstat and LH. Its pll is locked. But both scope and the LH graph shows a very slow frequency drift that with the offset I can make positive or negative. A cycle at 10 ns takes quite some time about an hour compared to a TBolt and another non modified Z3801. At this level of resolution some things start to become questionable. I almost wonder if the modified z3801 under some level of drift assumes everything is locked and fine. Can it be pushed beyond expectations. I suspect it can. Anyhow as I say a bit of GPSDO fun. Regards Paul WB8TSL ___ 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] HP Z3801 RB fun
Paul, We just want to help you with that curiosity, it sounds like a fun little project. :) The FRS-C [1] has a range of +/- 1E-9 over 0-5V, so EFC sensitivity is 4E-10/V. The Z3801A has a range of 5.20E-10 [2] over -5V to +5V [3], so EFC sensitivity is 5.2E-11/V. So, it looks like you need to have a gain of 8 and raise the EFC 2.5 V. Cheers, Magnus [1] http://www.to-way.com/tf/frs.pdf [2] http://www.leapsecond.com/pages/z3801a-efc/ [3] http://www.realhamradio.com/joe-geller.htm On 12/28/2016 11:42 PM, paul swed wrote: Magnus and Bob, Thank you for your response. As far as the original HO 10811 oscillator goes there is some well written details on it behavior and sensitivity. It was not the same as a standard 10811. A far smaller range as I recall. But the data is there. Its funny on the RB I have the EFC range from the spec sheet. It really tunes from 0-5V. But I find it interesting that the best alignment with other references is sub 1V. Its an old FRS C and I have others that may present a more centered range. I'll have to compare the detials that I have on the 10811 and FRS C. But I actually pulled out a 100:1 antenuator I was using on the Piezo crystal that indeed does lock. Goal in all of this is nothing special simply curiosity. Thanks again. When I have some real numbers to share I will. Regards Paul WB8TSL On Tue, Dec 27, 2016 at 10:26 PM, Bob Camp wrote: Hi The loop gain (as Magnus mentions) needs to be “correct” for the Rb. Since the firmware was written for an OCXO with a PPM(ish) trim range, tacking it on to a PPB(ish) Rb will require everything to scale by 1000:1. That’s 10 bits. You may (or may not) have enough resolution in the math to handle that wide a range of gains. If it really locks, the next challenge is to get it to run out to ~ 4 days or more on the loop. Again, the firmware may or may not be able to do this. Unless it does, the Rb really will not lock as well as it could. With the Rb correctly locked, you still have the issue that the Rb is a 2x10^-11 device (ADEV) at 1 second and the OCXO probably is 2x10^-12 (or better). For driving a counter with a normal gate, the Rb may not show much (if any) improvement. There is the slight chance the ADEV will get the firmware confused….. Since the firmware source is running around somewhere, you *could* dig into all of this wonderful stuff :) Bob On Dec 27, 2016, at 8:33 PM, paul swed wrote: OK so could not resist. The replacement of the HP 10811 with a PIEZO ocxo went very well. So in for a penny in for a pound. Why not an RB. Having a few around. Choice efratom FRS-c. Lot of thought went into this choice. Not really it was there. It has a inverse frequency to EFC voltage just like the piezo and opposite the HP 10811. Well it connects runs and locks using the simple 1 opamp level ofset and and phase inverter. But locked is a funny comment. According to HPsatstat and LH. Its pll is locked. But both scope and the LH graph shows a very slow frequency drift that with the offset I can make positive or negative. A cycle at 10 ns takes quite some time about an hour compared to a TBolt and another non modified Z3801. At this level of resolution some things start to become questionable. I almost wonder if the modified z3801 under some level of drift assumes everything is locked and fine. Can it be pushed beyond expectations. I suspect it can. Anyhow as I say a bit of GPSDO fun. Regards Paul WB8TSL ___ 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] A Leap Second is coming
If your device reports the leap second as xx:xx:60, Heather will do an automatic screen dump of the screen to the file "leap_sec.gif". If you don't wan't your location to show up in the dump, with version 5 you can do G L P from the keyboard to not show your lat/lon. SPECIAL WARNING: if you are running multiple instances of Heather from the same directory, they will all try to write to the same "leap_sec.gif" file and things won't go well. You should install multiple copies of Heather into different directories and run each instance from a different directory. I recommend testing the screen dump feature before hand... Enter "\" from the keyboard. You should hear a beep or two. Check your Heather directory for a new ".gif" file. The name will be dependent upon your receiver type. Also, verify that you can write log files. Try to write a log file (W L W from the keyboard). If you have access permission issues, it will report an error. The easiest way around permission issues is to run Heather as an administrator or to install Heather in a directory outside of the system folders. You can also enable writing a log file (I'd probably use a log file with the ".xml" extension... they are quite a bit larger than normal ".log" files, but have a lot more info in them. I'm going to be running a Tbolt, Z3801A, Z3811A, Oscilloquartz Star-4, Ublox M8, Sirf III, NVS 8, and a couple of other receivers . ___ 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 Z3801 RB fun
Magnus and Bob, Thank you for your response. As far as the original HO 10811 oscillator goes there is some well written details on it behavior and sensitivity. It was not the same as a standard 10811. A far smaller range as I recall. But the data is there. Its funny on the RB I have the EFC range from the spec sheet. It really tunes from 0-5V. But I find it interesting that the best alignment with other references is sub 1V. Its an old FRS C and I have others that may present a more centered range. I'll have to compare the detials that I have on the 10811 and FRS C. But I actually pulled out a 100:1 antenuator I was using on the Piezo crystal that indeed does lock. Goal in all of this is nothing special simply curiosity. Thanks again. When I have some real numbers to share I will. Regards Paul WB8TSL On Tue, Dec 27, 2016 at 10:26 PM, Bob Camp wrote: > Hi > > The loop gain (as Magnus mentions) needs to be “correct” for the Rb. Since > the firmware was written for an OCXO with a PPM(ish) trim range, tacking it > on to a PPB(ish) Rb will require everything to scale by 1000:1. That’s 10 > bits. > You may (or may not) have enough resolution in the math to handle that wide > a range of gains. > > If it really locks, the next challenge is to get it to run out to ~ 4 days > or more on > the loop. Again, the firmware may or may not be able to do this. Unless it > does, > the Rb really will not lock as well as it could. > > With the Rb correctly locked, you still have the issue that the Rb is a > 2x10^-11 > device (ADEV) at 1 second and the OCXO probably is 2x10^-12 (or better). > For > driving a counter with a normal gate, the Rb may not show much (if any) > improvement. > There is the slight chance the ADEV will get the firmware confused….. > > Since the firmware source is running around somewhere, you *could* dig into > all of this wonderful stuff :) > > Bob > > > > On Dec 27, 2016, at 8:33 PM, paul swed wrote: > > > > OK so could not resist. The replacement of the HP 10811 with a PIEZO ocxo > > went very well. So in for a penny in for a pound. Why not an RB. Having a > > few around. Choice efratom FRS-c. Lot of thought went into this choice. > Not > > really it was there. It has a inverse frequency to EFC voltage just like > > the piezo and opposite the HP 10811. > > Well it connects runs and locks using the simple 1 opamp level ofset and > > and phase inverter. > > But locked is a funny comment. According to HPsatstat and LH. Its pll is > > locked. But both scope and the LH graph shows a very slow frequency drift > > that with the offset I can make positive or negative. A cycle at 10 ns > > takes quite some time about an hour compared to a TBolt and another non > > modified Z3801. At this level of resolution some things start to become > > questionable. > > > > I almost wonder if the modified z3801 under some level of drift assumes > > everything is locked and fine. Can it be pushed beyond expectations. I > > suspect it can. > > Anyhow as I say a bit of GPSDO fun. > > Regards > > Paul > > WB8TSL > > ___ > > 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] A Leap Second is coming
Is everybody setup to watch it and collect lots of data? Anybody have a list of tools/toys for collecting data? An old favorite: www.cl.cam.ac.uk/~mgk25/time/leap/test/timelog.c -- These are my opinions. I hate spam. ___ 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] HP53132A Firmware Version 4613
Hi Simple answer - no, you cannot convert one to the other. Bob > On Dec 28, 2016, at 5:54 AM, GandalfG8--- via time-nuts > wrote: > > How similar are the 131A and the 132A ? Is it possible to upgrade a 131 > into 132 ? > > --- > > Interesting question! > > I suspect not, not in any straightforward fashion anyway, but I'm sure > others would know better than me. > From a quick look at the component level service manuals the hardware does > seem to be very similar, although just how similar would need a bit more > detailed investigation, but then there's no guarantee the FPGA programming > would be the same. > > I suppose an interesting experiment might be to drop a set of 53132A > firmware ROMs into a 53131A, not something I've tried, but I wouldn't be at > all > surprised if they weren't recognised. > > Regards > > Nigel > GM8PZR > ___ > 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] HP53132A Firmware Version 4613
On 27 December 2016 at 20:50, Adrian Godwin wrote: > How similar are the 131A and the 132A ? Is it possible to upgrade a 131 > into 132 ? The one big difference I know of (there must be others) is that the 131A "only" has a time resolution of 500ps, whereas on the 132A it is 150ps. Peter ___ 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] HP53132A Firmware Version 4613
___ 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] HP53132A Firmware Version 4613
How similar are the 131A and the 132A ? Is it possible to upgrade a 131 into 132 ? --- Interesting question! I suspect not, not in any straightforward fashion anyway, but I'm sure others would know better than me. >From a quick look at the component level service manuals the hardware does seem to be very similar, although just how similar would need a bit more detailed investigation, but then there's no guarantee the FPGA programming would be the same. I suppose an interesting experiment might be to drop a set of 53132A firmware ROMs into a 53131A, not something I've tried, but I wouldn't be at all surprised if they weren't recognised. Regards Nigel GM8PZR ___ 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.
