Agilent / HP / Keysight 3440A

The Agilent 3440A Digital Voltmeter is designed to measure dc voltages from 1 mV to 1000 V with an accuracy of ±0.05% ±1 count for operating temperature between +15 deg C and +40 deg C.

Accuracy is maintained for overrange voltages of 5% on all ranges, and polarity is automatically indicated.

In the 3440A, last completed measurement is displayed until a new measurement cycle is completed. The display storage feature prevents flickering of the readout during the measurement cycle.

Measurement sampling time is controlled by front panel SAMPLE RATE control, Selection of range is controlled by the RANGE switch on the Plug-in unit. Mode of operation is also controlled by Plug-in controls in Agilent 3440A.

Solid state components in the Model 3440A reduce the power consumption and internal heat dissipation, and increase instrument ruggedness.

Nearly all circuit components are mounted on plug-in etched circuit boards, allowing easier access for maintenance.

A plug-in unit is necessary for operation and is an integral part of the voltmeter circuit.

Agilent 3441A Range Selector Plug-in provides manual selection of 10, 100 and 1000 V range.

Agilent 3442A Automatic Range Selector Plug-in provides manual, automatic and remote selection of 10, 100 and 1000 V range.

Agilent 3443A High Gain/ Auto Range Unit provides manual, automatic and remote selection of 100 and 1000 mV; 10, 100 and 1000V ranges.

Agilent 3444A DC Multi-Function Unit provides a manual ranging dc voltmeter, dc milliammeter and ohmmeter.

Agilent 3445A AC/DC Range Unit provides manual, automatic and remote selection of 10, 100 and 1000 V ranges for both AC and DC voltages.

Agilent 3446A AC/DC Remote Unit provides AC and DC measurements of 10 V, 100 V 1000 V full scale.