[mailto:[EMAIL PROTECTED] On Behalf Of Brooke Clarke
> Sent: Thursday, October 25, 2007 1:25 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Scopes and 1 PPS signals?
>
> Hi Didier:
>
> When just a diode is used the stretching is only at
be if needed to widen the pulse.
>
> Didier KO4BB
>
>
>>-Original Message-
>>From: [EMAIL PROTECTED]
>>[mailto:[EMAIL PROTECTED] On Behalf Of Brooke Clarke
>>Sent: Tuesday, October 23, 2007 6:24 PM
>>To: Discussion of precise time and frequency measu
rom: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Brooke Clarke
Sent: 25 October 2007 02:54
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Scopes and 1 PPS signals?
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Hi Dave:
The prob
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Hi Tom:
It's the period or rep rate I'm trying to determine.
The SR620 has the PRS10 Rb as it's external time base. It's the period of the
pulse I'm trying to determine. i.e. I'm not at all sure it's a 1 PPS and
expect it
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> I tried the SR620. It's bouncing around a 32 Hz period.
Brooke,
You have a house standard, right? (GPSDO or cesium). Use
your SR620 to take a set of N (10 or 100) TI measurements
between your local reference and the O-1814
pe timebase!
> So I still think he wanted to measure the ~10uS pulse width..
>
> DaveB, NZ
>
> - Original Message -
> From: "Didier Juges" <[EMAIL PROTECTED]>
> To: "'Discussion of precise time and frequency measurement'"
&g
~10uS pulse width..
DaveB, NZ
- Original Message -
From: "Didier Juges" <[EMAIL PROTECTED]>
To: "'Discussion of precise time and frequency measurement'"
Sent: Wednesday, October 24, 2007 5:27 PM
Subject: Re: [time-nuts] Scopes and 1 PPS signal
ut the original question :-)
Didier
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Dave Brown
> Sent: Tuesday, October 23, 2007 11:21 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Scopes and 1
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- Original Message -
From: "Didier Juges" <[EMAIL PROTECTED]>
To: "'Discussion of precise time and frequency measurement'"
Sent: Wednesday, October 24, 2007 3:58 PM
Subject: Re:
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Hi there,
One option that I've used is to put a flip-flop on the signal, turning
the 1 PPS short pulse into a 1/2 Hz square wave. You can always see
that on the DSO, and it may even be easier to catch the rising and
falling ed
> [mailto:[EMAIL PROTECTED] On Behalf Of Brooke Clarke
> Sent: Tuesday, October 23, 2007 10:20 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Scopes and 1 PPS signals?
>
> Hi Dider:
>
> I'll give that a try tomorrow. What does
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Hi Dider:
I'll give that a try tomorrow. What does your camera setup look like?
Digital SLR on tripod? Does that mean the TDS-210 can not do a screen dump to
file?
I've been looking at the Rigol DS1102CD mixed signal scope.
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I took some pictures of my Thunderbolt's PPS output. While it's pulse is not
quite as narrow as what you report, it's 10uS, way too narrow for the scope
to display it in normal ("Sample") mode at 250mS/div (the fastest setting
t
: "Discussion of precise time and frequency measurement"
>
> Sent: Wednesday, October 24, 2007 12:20 AM
> Subject: Re: [time-nuts] Scopes and 1 PPS signals?
>
>
>
>>Hi Alan:
>>
>>I tried. At 100 ms/sq the second pulse would be just off screen to the
>
IL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
> Of WB6BNQ
> Sent: Tuesday, October 23, 2007 6:29 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Scopes and 1 PPS signals?
>
> Hi Brook,
>
> You could try using a 74123 (or newer va
ement"
Sent: Wednesday, October 24, 2007 12:20 AM
Subject: Re: [time-nuts] Scopes and 1 PPS signals?
> Hi Alan:
>
> I tried. At 100 ms/sq the second pulse would be just off screen to the
right.
> At 200 ms/sq the second pulse should be at center screen. Using the
window
>
2007 6:24 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Scopes and 1 PPS signals?
>
> Hi Bill:
>
> I'm sure that would work, but it's something else that needs
> to be done sometime in the future.
>
> I checked the pulse c
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Hi Bill:
I'm sure that would work, but it's something else that needs to be done
sometime in the future.
I checked the pulse coming from the M12+T and it's more like 100 ms wide,
probably for this reason.
Have Fun,
Brooke
t;
> Sent: Tuesday, October 23, 2007 11:05 PM
> Subject: [time-nuts] Scopes and 1 PPS signals?
>
>
>
>>Hi:
>>
>>While trying to figure out the O-1814 Rb source I found a 1 PPS signal
>
> that's
>
>>less than 10 us wide. But using an HP 54501A
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> Are there scopes that allow the period of a narrow pulse to be
> measured that don't cost an arm and leg?
Can you use delayed sweep to look at the next pulse?
If you have a good PPS source, that's a handy way to calibrate
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- Original Message -
From: "Brooke Clarke" <[EMAIL PROTECTED]>
To: "Discussion of precise time and frequency measurement"
Sent: Wednesday, October 24, 2007 11:05 AM
Subject: [time-nuts
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Hi ,
Isn't 5370 ownership a prerequisite for this group ?
Brooke Clarke <[EMAIL PROTECTED]> wrote:
Hi:
While trying to figure out the O-1814 Rb source I found a 1 PPS signal that's
less than 10 us wide. But using an
Subject: Re: [time-nuts] Scopes and 1 PPS signals?
Hi Brook,
You could try using a 74123 (or newer variants) retriggerable one shot to extend
the pulse width to a level that would allow you to see it on the scope.
BillWB6BNQ
Brooke Clarke wrote:
> Hi:
>
> While trying to figure out t
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Hi Brook,
You could try using a 74123 (or newer variants) retriggerable one shot to extend
the pulse width to a level that would allow you to see it on the scope.
BillWB6BNQ
Brooke Clarke wrote:
> Hi:
>
> While trying to
ement"
Sent: Tuesday, October 23, 2007 11:05 PM
Subject: [time-nuts] Scopes and 1 PPS signals?
> Hi:
>
> While trying to figure out the O-1814 Rb source I found a 1 PPS signal
that's
> less than 10 us wide. But using an HP 54501A DSO it's almost impossible
to
> determ
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Hi:
While trying to figure out the O-1814 Rb source I found a 1 PPS signal that's
less than 10 us wide. But using an HP 54501A DSO it's almost impossible to
determine the period. http://www.prc68.com/I/O1814.shtml
If the d
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