On 26 Jul 2010 at 16:57, Marvin Johnston wrote:
 I have no idea if this will help, but a google search for "IEEE_SEND"
 brings up three references including an MT-488 PDF Technical
 Reference. 
Thanks, but no--not even close.  This beast is a 1979-era ATE system.
But that *is* a cute little handheld controller!
BTW, that Wavetek 172A function generator appears to still be a
popular item 30 years later.  A quick price check shows that one can
expect to pay about $700 for one in good, calibrated condition.
--Chuck