> Date: Thu, 29 May 2008 15:10:35 -0400 > From: John Ioannidis <[EMAIL PROTECTED]> > Sender: [EMAIL PROTECTED] > > > This may sound like an embarrassment of riches, but here is my problem: > I have some rack-mounted servers (IBM System x3650 to be precise) that I > need to synchronize with a PPS signal. The problem is, of course, that > the machines have only one serial port, which I want to use as a serial > console, and of course they have no parallel ports. > > Any suggestions? Can I use a PCI serial card? Will that have acceptable > jitter?
John, You may not need a PCI serial card. Almost all rack-mount system with a single serial port also have a header for the second serial port. I have many of these, though they are SuperMicro, not IBM. The physical connector is a a bulkhead plate that fits in the same place as a PCI card would be mounted. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: [EMAIL PROTECTED] Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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