Brian: My understanding is that the U comes from "rack Units", where the incremental rack height is 1.75 inches and then continues in integer multiples. So, 7.0" 8.75" etc are all allowable rack panel heights, but 11.0 inches is not. It sounds to me like the American who chose 11 inches for a rack-mounted piece of gear made a bad choice.
If they made that bad choice, you also want to carefully check the number and spacing of the mounting holes on the front panel or rack ears to see if they align with standard rack rail hole spacings (I don't have that information handy, and seem to recall more than one "standard" (sic)). This may not be any help except to confirm that you're correct, not crazy. Regards, Jack Jacob Z. Schanker, P.E. Director of Agency Compliance Adaptive Broadband Corporation 175 Science Parkway Rochester, NY 14620 USA +716 242 8454 (voice) +716 241 5590 (fax) [email protected] <mailto:[email protected]> ---------- From: Brian Harlowe [SMTP:[email protected]] Sent: Wednesday, October 27, 1999 12:30 PM To: [email protected] Subject: Electronic unit panel sizes Excuse me from drifting away from the main topics of this forum. But can one of you whizzy american engineers help a poor englishman out. In the UK ( and Europe) front panels are measured in Us where 1U equals 1.75 ins or 44.45 millimetres. Does this system operate in the states? The reason I ask is we have an American unit to accomodate that 11 inches high which works out at 6.29U!!! Help Brian Harlowe * opinions expressed here are personal and in no way reflect the position of VG Scientific --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
