[Test-Equipment] 1 PPS visual

[Brooke Clarke]

Hi Raimond:

It depends on why you want to look at it.
Can you say more about what you are doing?
My Time & Frequency web page is at:
http://www.precisionclock.com

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.precisionclock.com



Raimond wrote:
>  I'm looking at the output of a HP/Agilent/Symmetricom 5071A. About 2.4
> volts to 4 volts into 50 ohms, 20 microsecond pulse width.
> 
> I think My main restriction is the scopes' capability. It's a BK Precision
> Corp. Model 2190B 100 MHz Dual-Trace Oscilloscope
> 
> Raimond
> 
> -----Original Message-----
> From: test-equipment-bounces at mailman.qth.net
> [mailto:test-equipment-bounces at mailman.qth.net] On Behalf Of mikea
> Sent: Monday, June 25, 2007 10:03
> To: test-equipment at mailman.qth.net
> Subject: Re: [Test-Equipment] 1 PPS visual
> 
> On Mon, Jun 25, 2007 at 09:44:16AM -0600, Raimond wrote:
> 
>> 
>> Any suggestions on the simplest, semi inexpensive way, to be able to 
>>look at a one Pulse Per Second wave form? It's seems that most 
>>oscilloscopes will not let me look that low in frequency. Basically I 
>>want to know, and see if I have a pure, clean 1 PPS waveform.
> 
> 
> Is there something about the waveform or your oscilloscope that prevents you
> from setting the sweep mode to sweep-only-on-trigger, triggering on the
> leading edge, and setting the sweep rate for an appropriate speed per
> division to see as much as you want? For a very short pulse (and
> correspondingly high sweep rate), you probably will have to crank the
> intensity up fairly high to get a sufficiently bright trace.
> 
> How long is the pulse? 1 millisecond? 1 microsecond? 1 nanosecond?
> What is the pulse amplitude? What are you getting it from? A Trimble or
> Ashtech GPS receiver, or from something else (please specify)?
> 
> Maybe I'm missing something; if so, please let me know what. 
> 
> --
> Mike Andrews, W5EGO
> mikea at mikea.ath.cx
> Tired old sysadmin
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