Re: [time-nuts] 1 PPS visual Test

I'll try that out, and let you know how it goes! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David McGaw Sent: Monday, June 25, 2007 11:32 To: [EMAIL PROTECTED]; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] 1 PPS vis

Re: [time-nuts] 1 PPS visual Test

Randy, and that's what I'm looking for, the actual measurement isn't that important, the fidelity of the pulse is. The concern is, that if I over drive the out put amplifiers of the distribution amps, I can make a VERY ugly picture, much like taking a five MHz sine wave, and turning it into a "dir

Re: [time-nuts] 1 PPS visual Test

Using "Normal" triggering, any digital scope will allow you to see the 1PPS edges clearly. Most analog scopes should have enough brightness at reasonably high sweep rate to see the edges in a darkened room or using a hood. Turn the brightness up to just below the point where a steady dot is s

Re: [time-nuts] 1 PPS visual Test

Raimond, About the only thing you can do is put the scope in normal trigger mode, looking for a positive going transition. If you set the horizontal sweep at about 1mS/cm you should see the rising edge of the pulse once per second. If you have an old scope without any storage capability the image

Re: [time-nuts] Tboltmon query

Since this got the attention of tbolt users, I have a question... How do I enable the Time Interval Counter (HP 53132) check box. Mine is grayed out. This would enable the setup box I assume for HPIB quarries. Thanks... Don - Original Message - From: Didier Juges To: 'Discussion

[time-nuts] 1 PPS visual

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. thanks, Raimond __

Re: [time-nuts] ? phase comparison or other device

From: Dr Bruce Griffiths <[EMAIL PROTECTED]> Subject: Re: [time-nuts] ? phase comparison or other device Date: Mon, 25 Jun 2007 20:37:29 +1200 Message-ID: <[EMAIL PROTECTED]> > Ulrich Bangert wrote: > > Pete, > > > > > 5. Mini-circuits BLP-1.9 low pass filter. > > > > > term

Re: [time-nuts] ? phase comparison or other device

Ulrich Bangert wrote: > Pete, > > 5. Mini-circuits BLP-1.9 low pass filter. > > terminating the mixer if output with an lowpass/bandpass filter and NOT > with an diplexer is not so good an idea. Where does the rf go? > > Best regards > Ulrich Bangert > > Ulrich This depen