FLUKE 5440B The 5440B Direct Voltage Calibrator

The 5440B Direct Voltage Calibrator is equipped with bright vacuum-fluorescent displays for clear visibility at any viewing angle.

Output Voltage of 0 to 1100 V with accuracy of 3ppm.
Completely automatic internal calibration, no mechanical adjustments
Provisions for simplified external calibration
Completely programmable through IEEE-488 Interface
Serial printer output for calibration constants and instrument test results
One of the most accurate and stable DC standards available.