The Keysight/Agilent/HP 3455A is a microprocessor-controlled digital voltmeter delivering 5½ or 6½-digit resolution for precision DC voltage, AC voltage, and resistance measurements in benchtop and automated systems. Its automatic calibration function corrects gain and offset errors in analog circuitry, while a removable reference module enables external calibration of DC voltage and resistance functions. The instrument integrates MATH capabilities for measurement scaling and error analysis, and is fully HP-IB programmable for systems integration.
Technical Specifications
DC Voltage Measurement
• Ranges: 0.1 V to 1000 V
• Resolution: 5 or 6 digits
• Sensitivity: Up to 1 µV
• Reading rate: Up to 24 readings per second
AC Voltage Measurement
• Ranges: 1 V to 1000 V (RMS converter)
• Resolution: 5 or 6 digits
• Frequency range: 30 Hz to 1 MHz (True RMS)
• Crest factor: Up to 7:1 at full scale
• Accuracy at 10 V range: ±(0.002% of reading + 1 digit)
• Accuracy at 1 V range: ±(0.003% of reading + 1 digit)
• Accuracy at 0.1 V range: ±(0.004% of reading + 4 digits)
• Accuracy at 100 V and 1000 V ranges: ±(0.004% of reading + 1 digit)
• Fast mode reading rate: Up to 13 readings per second above 300 Hz
Resistance Measurement
• Ranges: 0.1 kΩ to 10000 kΩ
• Resolution: 5 or 6 digits
• Modes: 2-wire or 4-wire configuration
• Reading rate: Up to 12 readings per second
– Key Features
• High-resolution 6½-digit mode provides >1 part per million resolution for DC and ohms
• Normal mode rejection: >60 dB
• Effective common mode rejection: >160 dB
• Automatic calibration corrects DC and ohms without bench removal
• MATH functions: scale mode and percentage error calculation
• Self-test feature validates DC measurement circuit operation
– Typical Applications
Precision DC and AC voltage characterization, resistance measurement, automated component testing, calibration verification, and systems-level measurement integration.
– Compatibility & Integration
Full HP-IB programmability enables integration into automated test systems and laboratory data acquisition networks.
