Re: [time-nuts] Scope Clock

2007-08-03 Thread Robert Atkinson
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi, Nigel (Gandalf) has already answered this question very well, but as an example I'm planning to use mine on a (quite old) Tektronix 602 display. Other examples are Tek 620 (600 series, but some are storage) and HP (Agilent)

[time-nuts] Timing on Ethernet

2007-08-03 Thread Pablo Alvarez Sanchez
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Dear timing colleges, At CERN we are considering the possibility of using Ethernet as a real time field bus. We may use IEEE 1588 to distribute precise UTC and Ethernet Powerlink or a similar home made product to guarantee

Re: [time-nuts] Timing on Ethernet

2007-08-03 Thread Dr Bruce Griffiths
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Pablo Alvarez Sanchez wrote: Dear timing colleges, At CERN we are considering the possibility of using Ethernet as a real time field bus. We may use IEEE 1588 to distribute precise UTC and Ethernet Powerlink or a

Re: [time-nuts] Timing on Ethernet

2007-08-03 Thread Jack Hudler
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY One thing that comes to mind, though I may be missing something here. Ethernet is CDMA/CA; would you not loose phase lock during a collision because of a corrupted carrier? ___

Re: [time-nuts] Timing on Ethernet

2007-08-03 Thread Magnus Danielson
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY From: Jack Hudler [EMAIL PROTECTED] Subject: Re: [time-nuts] Timing on Ethernet Date: Fri, 3 Aug 2007 07:38:35 -0500 Message-ID: [EMAIL PROTECTED] ); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY One

Re: [time-nuts] Timing on Ethernet

2007-08-03 Thread Warner Losh
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Looking at the IEEE 1588 while implementing in your own FPGA seems like an odd choice. It is an option, but you could fairly easy cook up something which fits your needs. It is not too hard actually. The main reason that

Re: [time-nuts] Timing on Ethernet (Magnus Danielson)

2007-08-03 Thread Pablo Alvarez Sanchez
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY First of all thanks a lot for your answers. For a facility like CERN, I think that normal cabel assymetries will be sufficiently low such that they would not require explicit handling, unless you have higher

Re: [time-nuts] Timing on Ethernet (Magnus Danielson)

2007-08-03 Thread Magnus Danielson
From: Pablo Alvarez Sanchez [EMAIL PROTECTED] Subject: Re: [time-nuts] Timing on Ethernet (Magnus Danielson) Date: Fri, 3 Aug 2007 18:25:58 +0200 Message-ID: [EMAIL PROTECTED] Hi Pablo, First of all thanks a lot for your answers. Thanks. For a facility like CERN, I think that normal cabel

Re: [time-nuts] Scope Clock

2007-08-03 Thread GandalfG8
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY In a message dated 03/08/2007 15:11:29 GMT Daylight Time, [EMAIL PROTECTED] writes: I think you mean Most *analog* scopes can be used in X-Y display mode. I have not looked closely, but I do not remember seeing X-Y mode

Re: [time-nuts] Scope Clock

2007-08-03 Thread Daun Yeagley
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi Didier I have a low cost DSO, the HP 54600 Jedi, and it has an X-Y mode (as well as a Roll mode which emulates a strip chart recorder at very low time/div settings). Now how well it would work in this application would be

[time-nuts] Scope clock

2007-08-03 Thread Mark Amos
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY All, I tried it with a DSO scope in XY mode a while back (7201? - can't recall the model, but it's 3-4 years old.) After some playing about with the controls, it worked acceptably. The general problem with it was getting

Re: [time-nuts] Scope Clock

2007-08-03 Thread John Miles
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Over at TVB's place the other night, we tried the clock on his TDS3000B-series DPO and it worked fine with a bit of knob-twiddling. The cheaper TDS2000-series DSO in the recent Make magazine article photos also seemed to do

Re: [time-nuts] Scope Clock

2007-08-03 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I think you mean Most *analog* scopes can be used in X-Y display mode. I have not looked closely, but I do not remember seeing X-Y mode on a DSO, even though I am sure the high end models support it. Didier KO4BB

Re: [time-nuts] HP-1332A

2007-08-03 Thread Mike Feher
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY You could go on the HP reflector to see if anyone can help. However, Agilent has about 90% of all of the old HP manuals (operating/service) in the archives on their web site. They also have most of the old app. notes. There is

Re: [time-nuts] Timing on Ethernet

2007-08-03 Thread Bob Paddock
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY On Friday 03 August 2007 07:22, Pablo Alvarez Sanchez wrote: At CERN we are considering the possibility of using Ethernet as a real time field bus. There are a couple of projects that have already gone down this road, for

Re: [time-nuts] Timing on Ethernet

2007-08-03 Thread Jack Hudler
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Thanks Magnus, I guess I was dating myself :). Pablo, is this going to be used for timing throughout the entire CERN site or just instrumentation on 27km LHC? If it's just the LHC then what about using an open fiber/copper