On Mon, 21 May 2007 09:55:13 -0400, Thompson, Steve <[EMAIL PROTECTED]> wrote:
. . . > >Second, you most certainly can use an external time source to set the >mainframe (either via Unix System Services & TCP/IP, or through the HMC >-- neither of which I have personal experience doing). The question is, >since the time source you will attempt to sync to (absent an ETR >connected to a "GPS/UTC" time source) is NOT sufficiently accurate to >avoid ambiguities in TOD processing -- why would you desire to use NTP >to set the mainframe, as opposed to letting the mainframe be your NTP >source? This was my reason for pointing out, from the PoOP, that the TOD >cycles bit 51 at the micro-second rate, giving a very small drift . . . The magnetron in my microwave oven cycles at a sub-nanosecond rate. That does not mean it would be be suitable as a low drift clock source. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
