IEC 62127-2:20 07+A1:2013+A2:2017规定了绝对水听器校准方法和相对（比较）水听器校准方法。本标准适用于: -水听器，用于在水中和高达40兆赫的超声波频率范围内进行测量； -采用圆形压电传感器元件的水听器，设计用于测量由超声设备产生的脉冲波和连续波超声场； -以及具有或不具有水听器前置放大器的水听器。IEC 62127-1、IEC 62127-2和IEC 62127-3正在同时发布。这些共同取消并取代IEC 60866:1987、IEC 61101:1991、IEC 61102:1991、IEC 61220:1993和IEC 62092:2001。2008年8月更正的内容已列入本副本。该标准的法文版尚未表决。该合并版本由第一版（2007年）、修正案1（2013年）和修正案2（2017年）组成。因此，除本出版物外，无需下令修订。

IEC 62127-2:2007+A1:2013+A2:2017 specifies absolute hydrophone calibration methods and relative (comparative) hydrophone calibration methods. This standard is applicable to:
- hydrophones used for measurements made in water and in the ultrasonic frequency range up to 40 MHz;
- hydrophones employing circular piezoelectric sensor elements, designed to measure the pulsed wave and continuous wave ultrasonic fields generated by ultrasonic equipment;
- and hydrophones with or without a hydrophone pre-amplifier. IEC 62127-1, IEC 62127-2 and IEC 62127-3 are being published simultaneously. Together these cancel and replace IEC 60866:1987, IEC 61101:1991, IEC 61102:1991, IEC 61220:1993 and IEC 62092:2001. The contents of the corrigendum of August 2008 have been included in this copy. The French version of this standard has not been voted upon. This consolidated version consists of the first edition (2007), its amendment 1 (2013) and its amendment 2 (2017). Therefore, no need to order amendment in addition to this publication.