IEC 60645-4 Ed. 1.0被替代
Audiometers Part 4: Equipment for extended high-frequency audiometry
出版：International Electrotechnical Committee
专家解读视频
Specifies requirements for audiometric equipment designed for use in pure tone audiometry in the frequency range from 8 000 Hz to 16 000 Hz, in addition to those that are applicable and specified in IEC 645-1.
NF EN 60645-4:1995 - Identical
PN EN 60645-4:1999 - Identical
AS IEC 60645.4-2002 - Identical
ONORM OVE EN 60645-4:1995 - Identical
BS EN 60645-4:1995 - Equivalent
DIN EN 60645-4 (1995-06) - Identical
UNE EN 60645-4:1997 - Identical
SS EN 60645-4 Ed. 1 (1996) - Identical
CEI EN 60645-4 Ed. 1 (1996) - Identical
SN EN 60645-4:1995 - Identical
NEN 10645-4:1995 - Identical
I.S. EN 60645-4:1996 - Identical
