The Agilent / HP 81533A & 81533B interface modules operate with the 815xx optical head and 8153, 8163, and 8164 mainframes. Agilent Technologies does not publish specifications for the 81533A or 81533B interface modules as it must always operate with an optical head and mainframe. The 81533A module can be used with optical heads: 81521B and 81524A.
