Re: [time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
40 to 100 microF electrolytic will work. On Mon, 30 Sep 2019 12:21:06 +1000, Neville Michie wrote: >If you have a square wave at .5PPS and you connect a large series capacitor to >the coil of a quartz clock >(less battery) you get alternating seconds pulses drive to an analogue dial. >50 ohms will easily drive the about 1k coil. >Cheap quartz clocks make good slaves. >cheers, >Neville Michie >> On 29 Sep 2019, at 22:56, Gregory Beat via time-nuts >> wrote: >> >> A new resident arrived at the GTime CaveG this weekend, the >> HP/Symmetricom 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD clock display). >> Acquired in USA, cheaper than current Asian exporter. >> https://accusrc.com/uploads/datasheets/4975_58503b.pdf >> >> Supposedly stored in a closet since 2010 (verified by its diagnostic logs), >> the unit only had 2,000 hours of operation. >> Today, it happily has a GPS Lock and is currently Gre-learningG where >> the 1 PPS and 10 MHz outputs wandered (taming Lazarus). >> G >> One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. >> >> Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a >> pulse every other second, synchronized to the even seconds in GPS time. >> Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). >> === >> QUESTION: >> What Specific Applications would use this 1PP2S output regularly?? >> >> greg >> >> Sent from iPhone 6s >> ___ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >___ >time-nuts mailing list -- time-nuts@lists.febo.com >To unsubscribe, go to >http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >and follow the instructions there. Bill Beam NL7F ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
If you have a square wave at .5PPS and you connect a large series capacitor to the coil of a quartz clock (less battery) you get alternating seconds pulses drive to an analogue dial. 50 ohms will easily drive the about 1k coil. Cheap quartz clocks make good slaves. cheers, Neville Michie > On 29 Sep 2019, at 22:56, Gregory Beat via time-nuts > wrote: > > A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom > 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD > clock display). > Acquired in USA, cheaper than current Asian exporter. > https://accusrc.com/uploads/datasheets/4975_58503b.pdf > > Supposedly stored in a closet since 2010 (verified by its diagnostic logs), > the unit only had 2,000 hours of operation. > Today, it happily has a GPS Lock and is currently “re-learning” where the 1 > PPS and 10 MHz outputs wandered (taming Lazarus). > — > One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. > > Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a > pulse every other second, synchronized to the even seconds in GPS time. > Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). > === > QUESTION: > What Specific Applications would use this 1PP2S output regularly?? > > greg > > Sent from iPhone 6s > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
[time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
OPTIONAL 1 PP2S OUTPUT (EVEN-SECOND OUTPUT) An even-second (1 PP2S) output is available as an option to the 58503B. The even-second output option provides one pulse every other second, synchronized to the even seconds in GPS time. This is the reference time used in CDMA base stations. GPS evensecond pulses from the 1 PP2S option are used to synchronize the Agilent® 8921A (Option 600) and the Agilent 8935A cellular base station test sets. Synchronizing the test set from an independent source permits remote base station testing and independent base station frequency and time reference accuracy checks. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
I believe it's a CDMA thing. I have a Nortel GPSTM that came out of CDMA site. It has the same thing. --- (Mr.) Taka Kamiya KB4EMF / ex JF2DKG On Sunday, September 29, 2019, 9:36:55 AM EDT, Gregory Beat via time-nuts wrote: A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD clock display). Acquired in USA, cheaper than current Asian exporter. https://accusrc.com/uploads/datasheets/4975_58503b.pdf Supposedly stored in a closet since 2010 (verified by its diagnostic logs), the unit only had 2,000 hours of operation. Today, it happily has a GPS Lock and is currently “re-learning” where the 1 PPS and 10 MHz outputs wandered (taming Lazarus). — One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a pulse every other second, synchronized to the even seconds in GPS time. Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). === QUESTION: What Specific Applications would use this 1PP2S output regularly?? greg Sent from iPhone 6s ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
To replace one? On 2019-09-29 10:22, paul swed wrote: On second thought (Pun intended) Its a pendulum clock output. Have no idea why some one would use a GPSDO to drive a pendulum clock but that could be a reason for such a thing. Paul On Sun, Sep 29, 2019 at 12:02 PM Dana Whitlow wrote: I can't speak for 1/2PPS, but at the Arecibo Observatory we distributed 1PPS with every 10th second's pulse stretched to about twice the duration of the others. I did find that to be kind of handy every now and then, when troubleshooting things. Dana On Sun, Sep 29, 2019 at 8:36 AM Gregory Beat via time-nuts < time-nuts@lists.febo.com> wrote: > A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom > 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD > clock display). > Acquired in USA, cheaper than current Asian exporter. > https://accusrc.com/uploads/datasheets/4975_58503b.pdf > > Supposedly stored in a closet since 2010 (verified by its diagnostic > logs), the unit only had 2,000 hours of operation. > Today, it happily has a GPS Lock and is currently “re-learning” where the > 1 PPS and 10 MHz outputs wandered (taming Lazarus). > — > One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. > > Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a > pulse every other second, synchronized to the even seconds in GPS time. > Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). > === > QUESTION: > What Specific Applications would use this 1PP2S output regularly?? > > greg > > Sent from iPhone 6s > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. -- Dr. Don Latham AJ7LL PO Box 404, Frenchtown, MT, 59834 VOX: 406-626-4304 ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
I seem to recall there was a telecom application for a pulse per even second output. Maybe for certain CDMA base stations ? Mark S m...@alignedsolutions.com 604 762 4099 > On Sep 29, 2019, at 5:56 AM, Gregory Beat via time-nuts > wrote: > > A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom > 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD > clock display). > Acquired in USA, cheaper than current Asian exporter. > https://accusrc.com/uploads/datasheets/4975_58503b.pdf > > Supposedly stored in a closet since 2010 (verified by its diagnostic logs), > the unit only had 2,000 hours of operation. > Today, it happily has a GPS Lock and is currently “re-learning” where the 1 > PPS and 10 MHz outputs wandered (taming Lazarus). > — > One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. > > Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a > pulse every other second, synchronized to the even seconds in GPS time. > Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). > === > QUESTION: > What Specific Applications would use this 1PP2S output regularly?? > > greg > > Sent from iPhone 6s > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
On second thought (Pun intended) Its a pendulum clock output. Have no idea why some one would use a GPSDO to drive a pendulum clock but that could be a reason for such a thing. Paul On Sun, Sep 29, 2019 at 12:02 PM Dana Whitlow wrote: > I can't speak for 1/2PPS, but at the Arecibo Observatory we distributed > 1PPS with every > 10th second's pulse stretched to about twice the duration of the others. I > did find that to > be kind of handy every now and then, when troubleshooting things. > > Dana > > > On Sun, Sep 29, 2019 at 8:36 AM Gregory Beat via time-nuts < > time-nuts@lists.febo.com> wrote: > > > A new resident arrived at the “Time Cave” this weekend, the > HP/Symmetricom > > 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD > > clock display). > > Acquired in USA, cheaper than current Asian exporter. > > https://accusrc.com/uploads/datasheets/4975_58503b.pdf > > > > Supposedly stored in a closet since 2010 (verified by its diagnostic > > logs), the unit only had 2,000 hours of operation. > > Today, it happily has a GPS Lock and is currently “re-learning” where the > > 1 PPS and 10 MHz outputs wandered (taming Lazarus). > > — > > One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. > > > > Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting > a > > pulse every other second, synchronized to the even seconds in GPS time. > > Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). > > === > > QUESTION: > > What Specific Applications would use this 1PP2S output regularly?? > > > > greg > > > > Sent from iPhone 6s > > ___ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
Impulse stepper clocks. Though I will say a bit odd in that normally there are two outputs. Essentially even odd seconds across the stepper motor. Regards Paul On Sun, Sep 29, 2019 at 9:36 AM Gregory Beat via time-nuts < time-nuts@lists.febo.com> wrote: > A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom > 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD > clock display). > Acquired in USA, cheaper than current Asian exporter. > https://accusrc.com/uploads/datasheets/4975_58503b.pdf > > Supposedly stored in a closet since 2010 (verified by its diagnostic > logs), the unit only had 2,000 hours of operation. > Today, it happily has a GPS Lock and is currently “re-learning” where the > 1 PPS and 10 MHz outputs wandered (taming Lazarus). > — > One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. > > Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a > pulse every other second, synchronized to the even seconds in GPS time. > Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). > === > QUESTION: > What Specific Applications would use this 1PP2S output regularly?? > > greg > > Sent from iPhone 6s > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
I can't speak for 1/2PPS, but at the Arecibo Observatory we distributed 1PPS with every 10th second's pulse stretched to about twice the duration of the others. I did find that to be kind of handy every now and then, when troubleshooting things. Dana On Sun, Sep 29, 2019 at 8:36 AM Gregory Beat via time-nuts < time-nuts@lists.febo.com> wrote: > A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom > 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD > clock display). > Acquired in USA, cheaper than current Asian exporter. > https://accusrc.com/uploads/datasheets/4975_58503b.pdf > > Supposedly stored in a closet since 2010 (verified by its diagnostic > logs), the unit only had 2,000 hours of operation. > Today, it happily has a GPS Lock and is currently “re-learning” where the > 1 PPS and 10 MHz outputs wandered (taming Lazarus). > — > One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. > > Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a > pulse every other second, synchronized to the even seconds in GPS time. > Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). > === > QUESTION: > What Specific Applications would use this 1PP2S output regularly?? > > greg > > Sent from iPhone 6s > ___ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
[time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B
A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD clock display). Acquired in USA, cheaper than current Asian exporter. https://accusrc.com/uploads/datasheets/4975_58503b.pdf Supposedly stored in a closet since 2010 (verified by its diagnostic logs), the unit only had 2,000 hours of operation. Today, it happily has a GPS Lock and is currently “re-learning” where the 1 PPS and 10 MHz outputs wandered (taming Lazarus). — One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a pulse every other second, synchronized to the even seconds in GPS time. Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). === QUESTION: What Specific Applications would use this 1PP2S output regularly?? greg Sent from iPhone 6s ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
