DIN ISO 389:1988-09
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ACOUSTICS - STANDARD REFERENCE ZERO FOR THE CALIBRATION OF PURE TONE AIR CONDUCTION AUDIOMETERS
Published date
01-09-1988
Superseded date
01-11-1995
Sorry this product is not available in your region.
Deals with 2 earphones; Beyer DT 48 with flat cushion, and Telephonics TDH 39 with MX 41/AR cushion.
| DocumentType |
Standard
|
| PublisherName |
German Institute for Standardisation (Deutsches Institut für Normung)
|
| Status |
Superseded
|
| Standards | Relationship |
| ISO 389:1991 | Identical |
Summarise
Sorry this product is not available in your region.