The 3468B is a fully programmable HP-IL (serial interface)Digital Multimeter. It offers 3.5 digit to 5.5 digit resolution flexibility permitting speed for readings/second tradeoffs to be made. Standard features include electronic calibration through the front panel, true rms ac measurements, and an LCD display. An optional battery pack provides up to 5 hours of operation. The 3468B measures dc & ac Volts, dc & ac current, and 2-wire & 4-wire Ohms.