Re: [ntp:questions] strange behaviour of ntp peerstats entries.

2008-02-01 Thread David Woolley
Steve Kostecke wrote: > There's nothing stopping him from implementing what he considers to be a > solution himself. He could even distribute his modified version of NTP > to anyone who wanted to use it. Why should he do that when something already exists, although it is not technically NTP? As

Re: [ntp:questions] GPS and NTP Server

2008-02-01 Thread Paul . Croome
Hallo Noosh, I look after a Hopf 6855, which is similar to your 6842 but receives LF signals from DCF77. I configured my Hopf clock as follows: Serial output: 09600 bits/sec, 8 data bits, no parity, 1 stop bit, no handshake Mode byte 1: binary 0100 Mode byte 2: binary Status and pu

Re: [ntp:questions] GPS and NTP Server

2008-02-01 Thread Dag-Erling Smørgrav
David Woolley <[EMAIL PROTECTED]> writes: > For the most accurate time, you need to connect the PPS outputs, which > seem to be separate from the RS 232 interface. (It's not worth > downloading the manual to check this without the exact version > information.) Hmm, isn't the PPS signal usually co

Re: [ntp:questions] GPS and NTP Server

2008-02-01 Thread Paul . Croome
Quoting from the documentation of refclock driver 22: "A radio clock is usually connected via a serial port and the PPS source connected via a level converter to the data carrier detect (DCD) pin (DB-9 pin 1, DB-25 pin 8) of the same connector." No doubt there are other ways of skinning this cat.

Re: [ntp:questions] Ultralink 325 WWVB receiver

2008-02-01 Thread Rob Kimberley
"Dennis Hilberg, Jr." <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] >I recently snagged an Ultralink 325 WWVB receiver off Ebay to use as a > refclock with an ntp server, hoping to peer that one and my gps-referenced > ntp server together. How far are you from Boulder? What is the

Re: [ntp:questions] Ultralink 325 WWVB receiver

2008-02-01 Thread Dennis Hilberg, Jr.
Rob Kimberley wrote: > How far are you from Boulder? What is the period of the step you are seeing? > If on a regular 24 hour basis, I'm guessing due to diurnal affects. Do you > have a plot we can see? > > Rob Kimberley You mean from Fort Collins? I'm about 1495 km from there. I'll generate

Re: [ntp:questions] GPS and NTP Server

2008-02-01 Thread David Woolley
Dag-Erling Smørgrav wrote: > Hmm, isn't the PPS signal usually connected to one of the flow control > pins? That's how people typically get it into the computer, but in this case, and I believe more generally, the user is responsible for arranging for the signal to appear on that pin and at a l

Re: [ntp:questions] strange behaviour of ntp peerstats entries.

2008-02-01 Thread David L. Mills
David, I don't know what you mean by "figure head", but this is probably what is intended. The statistics such as root delay, root dispersion and related statistics are in fact inherited from the system peer, but the actual clock offset is computed as a weighted average. See the draft MT{v4 sp

Re: [ntp:questions] SNTP test bench

2008-02-01 Thread David L. Mills
Dag-Erling, The monitor and rate semantics are further elaborated in the recent documentation posted to the web page. Dave Dag-Erling Smørgrav wrote: > "David L. Mills" <[EMAIL PROTECTED]> writes: > >>The rate violation is caught in the MRU list, which can be retrieved >>using ntpdc and the mo

Re: [ntp:questions] strange behaviour of ntp peerstats entries.

2008-02-01 Thread David L. Mills
Guys, This is really silly. The Unruh agenda is clear. Should you choose to limit the application space to fast local networks, the chrony choice may or may not be optimal. Should you extend this space to the raunchy global Internet, conviction will require diligent testing and analysis. There