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    STUDIA PHYSICA - Issue no. SPECIAL%20ISSUE / 2001  
         
  Article:   UPGRADING OF THE HP-5985A QUADRUPOLE MASS SPECTROMETER.

Authors:  N. LUPŞA, V. MIREL, A. PAMULA, N. PALIBRODA, ALINA N. NICA.
 
       
         
  Abstract:  The HP 5985A mass spectrometer is designed to communicate with the HP 21 MX-E minicomputer through a bi-directional 16 bit parallel interface with separated lines for the two directions. TTL integrated circuits are used. There is no galvanic separation between the TTL and analog circuits in the electronic units of the spectrometer.  
         
     
         
         
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