Service Manual MA 42
D-0125965 Rev. D
41
18/05/2022
AUDIOMETRY
Speech Signals
Microphone (Mic), Wave or external audio device (AUX)
Speech Level
AC: -10 dB HL to 100 dB HL
BC: -10 dB HL to 60 dB HL
Insert phones: -10 dB HL to 95 dB HL
Sound field speaker with Amplifier: -10 dB HL to 90 dB HL
Precision
Level Steps: 1 dB, 2 dB or 5 dB (selectable in settings)
Frequency
Response
(Loudspeaker)
Sound Pressure Level: ± 3 dB for 125 Hz to 4000 Hz and
± 5 dB for 6000 Hz to 16000 Hz
Force Level: ± 4 dB for 125 Hz to 4000 Hz and
± 5 dB for higher frequencies
Distortion
Total Harmonic Distortion (THD):
Headphones, insert earphones and bone conductor output: see
tone values
Loudspeaker output: 3 % at 80 dB, 10 % at 100 dB SPL
PRINTER
Thermal
printer
Type
HM-E300
Display
OLED display
Accessories USB Cable, Paper (2 rolls), Quick Guide
Connection USB
Battery
2300 mAh/7.4 V rechargeable Li-ion battery
5 days stand-by
Charger
Output: DC 5 V/1A
Battery: 2300 mAh/7.4 V rechargeable Li-ion battery
Dimension
W x D x H: 106.2 mm x 139.1 mm x 61.9 mm
(4.18 in x 5.48 in x 2.44 in)
Weight
475.8 g / 17.8 oz (without paper roll)
Paper
Continuous paper
Paper Width: 80 mm
Paper Thickness: 0.053 mm to 0.100 mm
Paper Roller Diameter: ≤ 50 mm
To be printed on paper roll.
Printing time <5 s per test result
