The 44701A Integrating Voltmeter directly measures dc voltage, ac voltage and resistance and lets you accurately measure small signal changes in noise environments. You can also choose the resolution, accuracy, and noise rejection needed while mazimizing measurement speed. You can also optimize resistance measurements to the accuracy you need. This is a plug-in module for the 3852A Data Acquisition/Control Mainframe (not included). Features 5 1/2 to 3 1/2-digits Best dc voltage accuracy: ±(0.015% + 340 µV) for 3V range