324 / | HD | ELECTRICITY: MEASURING AND TESTING |
600 | DF | IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS {8} |
602 | DF | .~ With auxiliary means to condition stimulus/response signals {3} |
609 | .~.~ For sensing {2} | |
610 | DF | .~.~.~> Including a bridge circuit |
611 | DF | .~.~.~> Including a remote type circuit |