I've been trying to interpret beep codes from an Optiplex 150 and after scratching

my head for almost an hour I realize what has been confusing me.  Coming from

an IBM background (sorry) I realize I'm used to hearing codes as a series of "long"

beeps and "short" beeps; with the Optiplex 150 I'm currently troubleshooting I

determined ALL beeps were "long" but the SILENCE between them varies from

short to long.   I'm curious to know if anyone else has anyone else noticed this or

if I'm missing something altogether?