This standard specifies the calibration conditions, calibration items and calibration methods of the geophone tester calibration device. This standard applies to the calibration of newly manufactured, in-use and repaired geophone tester calibration devices (hereinafter referred to as "calibration devices").
SY/T 7081-2016 Referenced Document
JJG 166-1993 Verification Regulation of DC Resistors
JJG 251-1997 Verification Regulation of Distortion Meter Calibrator
JJG 315-1983 Verification Regulation of DC Digital Voltmeter