Crystal Instruments Corporation

(A2LA Cert. No. 7526.01) 12/04/2025 Page 2 of 2 Parameter/Range Frequency CMC1,2 Comments AC Voltage – Measure and Generate cont. >1 to 10 V (5 to 10) Hz >10 Hz to 20 kHz (>20 to 50) kHz 0.27 % + 0.0025 V 0.044 % + 0.0026 V 0.11 % + 0.0039 V Fluke 8845A, Keithley DMM6500 II. Thermodynamics Parameter/Range Frequency CMC1,2 Comments Frequency – Measure and Measuring Equipment (10 to <2000) Hz (2 to 45) kHz 0.0079 % + 0.0019 Hz 0.0069 % + 0.000 47 kHz Fluke 8845A, Keithley DMM6500 _________________________ 1 Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurement that a laboratory can achieve within its scope of accreditation when performing more or less routine calibrations of nearly ideal measurement standards or nearly ideal measuring equipment. CMCs represent expanded uncertainties expressed at approximately the 95 % level of confidence, usually using a coverage factor of k = 2. The actual measurement uncertainty of a specific calibration performed by the laboratory may be greater than the CMC due to the behavior of the customer’s device and to influences from the circumstances of the specific calibration. 2 In the statement of CMC, percentages are defined as the percentage of reading.