Steve, >From information I have seen, the expected accuracy of mainframes TOD clock is around .86 seconds per day. The spec on the 9037 ( without ETS ) seems to be much better than that, around .17 seconds per day. It seems that a mainframe that doesn't have a 9037 might see a drift of their TOD clock of as much as 25 seconds per month, yet they are still 'within spec'. If one was to experience a mainframe TOD clock drift ( current supported machines, not 3090s, ES/9000s, etc ) of something much larger than that, I recommend you place a call with IBM Hardware support.
HTH Glenn Miller ---------------------------------------------------------------------- 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