Fluke 125B/S Calibration Guide - Page 31

Industrial ScopeMeter Performance Verification d. Push . e. Push  to open the INPUT SETTINGS A menu. f. Push  to open the INPUT SETTINGS B menu. g. Make these selections: • Select Coupling: DC • Readings: Smooth • Noise filter: ON 7. For each sensitivity value listed in Table 4: a. On the Test Tool, push  or  to set the Input A and Input B sensitivity. The range is listed in the second column. b. Set up the Calibrator: i. Source the DC voltage listed in Table 4. ii. Push . c. Compare the main reading to the limits in Table 4. 8. Set the Calibrator to 0 V (zero). Table 4. Volts DC Measurement Verification Points Sensitivity (Oscilloscope) Range[1] (Meter) Calibrator Output V DC 5 mV/div 500 mV 15 mV 10 mV/div 500 mV 30 mV 20 mV/div 500 mV 60 mV 50 mV/div 500 mV 150 mV 100 mV/div 500 mV 300 mV 500 mV 200 mV/div 500 mV -500 mV 0 mV 500 mV/div 5 V 1.5 V 1 V/div 5 V 3 V 5 V 2 V/div 5 V -5 V 0 V 5 V/div 50 V 15 V 10 V/div 50 V 30 V 50 V 20 V/div 50 V -50 V 0 V 50 V/div 500 V 150 V 100 V/div 500 V 300 V [1] The 500 V and 750 V range is tested in Input A and B High Voltage AC/DC Accuracy Test on page 28. [2] OL (overload) shows on the display occasionally when there is calibrator noise. Input A-B DC Limit 014.4 to 015.6[2] 029.3 to 030.7[2] 059.2 to 060.8 148.7 to 151.3 298.0 to 302.0 497.0 to 503.0 -497.0 to -503.0 -000.5 to + 000.5 1.487 to 1.513 2.980 to 3.020 4.970 to 5.030 -4.970 to -5.030 -0.005 to +0.005 14.87 to 15.13 29.80 to 30.20 49.70 to 50.30 -49.70 to -50.30 -00.05 to +00.05 148.7 to 151.3 298.0 to 302.0 23