Larson Davis a PCB Division

(A2LA Cert. No. 3622.01) Revised 03/05/2026 Page 2 of 5 II. Electrical – DC/Low Frequency Parameter/Equipment Range CMC2, 3 (±) Comments DC Voltage – Measure (10 to 120) mV 100 mV to 1.2 V (1 to 12) V (10 to 120) V 7.5 µV/V + 0.36 µV 9.2 µV/V + 0.32 µV 9.4 µV/V + 0.87 µV 12 µV/V + 32 µV Agilent 3458A digital multimeter Parameter/Range Frequency CMC2, 3, 4 (±) Comments AC Voltage – Measure 100 mV to 14 V (10 to 120) mV 100 mV to 1.2 V (1 to 12) V (10 to 120) V 6.3 Hz to 20 kHz 3 Hz to 50 kHz (50 to 300) kHz 3 Hz to 50 kHz (50 to 300) kHz 3 Hz to 50 kHz (50 to 300) kHz 3 Hz to 50 kHz (50 to 300) kHz 0.12 dB 0.031 % + 2.1 µV 0.31 % + 11 µV 0.031 % + 21 µV 0.31 % + 0.11 mV 0.031 % + 0.21 mV 0.31 % + 1.1 mV 0.036 % + 2.1 mV 0.41 % + 11 mV LD model 831 with ADP074 Agilent 3458A digital multimeter Attenuation – Measure, Fixed Points 40 dB 60 dB Gain 10 Hz to 20 kHz 10 Hz to 20 kHz 0.02 dB 0.05 dB Agilent (HP) 34401A digital multimeter

(A2LA Cert. No. 3622.01) Revised 03/05/2026 Page 4 of 5 III. Mechanical Parameter/Equipment Frequency CMC2, 3 (±) Comments Accelerometers – vs. Primary Standard (5 to 9) Hz (10 to 99) Hz 100 Hz (101 to 920) Hz (921 to 5000) Hz (5001 to 10 000) Hz (10 to 15) kHz (15 to 20) kHz 2.0 % 1.5 % 1.2 % 1.4 % 1.7 % 2.2 % 2.5 % 3.5 % Data acquisition card w/ 396C10/C11 air bearing shaker Low Frequency Accelerometer Calibration (0.5 to 10) Hz 1.2 % Data acquisition card w/ low frequency long stroke shaker w/ optical reference IV. Time & Frequency Parameter/Equipment Range CMC2, 6 (±) Comments Frequency – Measure 100 mV to 120 V (3 to 40) Hz 40 Hz to 200 kHz 36 µHz/Hz + 13 mHz 33 µHz/Hz + 13 mHz Agilent (HP) 34401A digital multimeter Frequency – Measuring Equipment 10 µVpp to 40 Vpp 0.01 Hz to 200 kHz 12 µHz/Hz + 12 mHz Signal generator (SRS DS360)  1 This laboratory offers commercial calibration service. 2 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.

(A2LA Cert. No. 3622.01) Revised 03/05/2026 Page 5 of 5 3 The measurands stated are generated using the indicated instrument (see Comments). This capability is suitable for the calibration of the devices intended to measure the measurand in the ranges indicated. CMCs are expressed as either a specific value that covers the full range or as a fraction of the reading plus a fixed floor specification. 4 All references to dB are given in dB Volts. 5 This scope meets A2LA’s P112 Flexible Scope Policy. 6 The type of instrument or material being calibrated is defined by the parameter. This indicates the laboratory is capable of calibrating instruments that measure or generate the values in the ranges indicated for the listed measurement parameter.