From: phil_a@tpg.com.au   
      
   "GRe" >   
   > "Phil Allison"   
   >> "patrick-turner"   
   >>   
   >> The 207A is described as an audio sweep oscillator, which I assume means   
   >> the F starts at 20Hz and over a time period the F is smoothly changed up   
   >> to 20kHz, enabling the audio F response of filters and speakers etc to be   
   >> seen on a CRO screen.   
   >>   
   >> ** Not at all, it is not a sweep generator.   
   >>   
   >> Operation is purely manual [...]   
   >   
   > ...unless one employes the 1950's way of sweeping by using a motor fitted   
   > to the protruding rear end of the tuning dial shaft.   
      
      
   ** Which is not part of the 207As capabilities NOR has anything to do with   
   PT's silly assumption above.   
      
    Did you even read it ?   
      
    FYI:   
      
   The max manual sweep rate HP recommend is one in 20 seconds.   
      
   OTOH a sweep generator has to produce a viewable trace on a scope -  so 10   
   to 20 sweeps per second, at least.   
      
      
      
   ...  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)