Fluke 8845A(may apply to 8846A as well) intermittent "Initializing" loop
Fluke 8845A 120V 6.5 Dual Digital Display Precision Multimeter, 35 PPM, 0.0035 Percent Accuracy, 100 pA Resolution, Includes ISO 17025 Accredited Certificate of Calibration: Multi Testers: Amazon.com: Industrial & Scientific
Fluke 8845A 8846A - TREND PLOT - How to evaluate recorded data
Fluke-8845A Präzisionsmultimeter für Labor-/Systemanwendungen
Fluke 8845A & 8846A | PDF | Personal Computers | Electrical Engineering