SM010-3 Siemens SD 270 Operating & Service Manual Page 19
5.2 Maximum hearing levels provided at each frequency
Frequency,
Hz
Air conduction, dBHL
(DD45)
Bone conduction, dBHL
(B-71)
125
80
-
250
100
45
500
115
60
750
120
65
1000
120
70
1500
120
70
2000
120
70
3000
120
70
4000
115
70
6000
110
50
8000
100
40
5.3 Physical Data
Display:
2 lines of 24 characters
Mains power:
100-240Vac; 50/60Hz; 0.25A
Dimensions:
355mm long x 230mm deep x 100mm high
Weight:
1.6kg
Safety:
IEC 60601-1 (plus UL, CSA & EN deviations)
EMC:
IEC 60601-1-2
CE mark:
To the EU Medical Device Directive
5.4 Equipment classification
Type of protection against electric shock
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ClassII mains adapter
Degree of protection against electric shock
Type B applied part
Degree of protection against ingress of water Not protected
Mode of operation
Continuous operation
Equipment mobility
Portable
The SD 270 Audiometer is classified as a Class IIa device under Annex IX
(Section 1) of the EU Medical Devices Directive. It is intended for use as a
diagnostic audiometer instrument