AmpliVox 270+ - 7. EMC GUIDANCE & MANUFACTURERS DECLARATION; EMC Precautions for Hospital Use; Essential Performance and EMC Compliance

46
D-0126050 rev 1 - 270+ Operating Manual
HLS (Hearing Loss Simulation)
6.4. SPEECH TESTING
Material:
Recorded speech: Tape or CD/MP3 input
Live speech: 1 x microphone input
Masking:
Signals:
Speech weighted noise
Monitoring
Indicator:
VU Meter:
IEC 60268-17; ANSI S3.6:2004)
Speech Channel:
Frequency response:
+/- 3dB from 100Hz to 10kHz electrical
Voltage requirement at
0dB input level setting to
zero meter:
1.20Vrms at 1kHz
Output level:
90dBSPL at 1kHz for attenuator setting of 70dBHL with
level meter at 0dB
6.5. MAXIMUM HEARING LEVELS PROVIDED BY EACH FREQUENCY
FREQUENCY [HZ]
AIR CONDUCTION [DB HL]
BONE CONDUCTION [DB HL]
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
6.6. EARPHONE SOUND ATTENUATION CHARACTERISTICS
FREQ [HZ]
125
250
500
1000
2000
4000
8000
ATTENUATION [DB]
2
5
7
15
25
31
23