4.1
Microphone with capsule MK255
According to IEC 61672-1:2014 Tango_Plus has been tested under the following conditions:
Property
value
Frequency range (Free field frequency response)
20 Hz bis 20 kHz
Level range
section 3.6.1
Restriction of linear level range due to mechanical vibration
section 3.4.1
Temperature range
-10
◦
C bis 50
◦
C
Static air pressure
65 kPa bis 108 kPa
Relative humidity
25 % bis 80 %
Electrostatic discharge
section 3.3.2
High frequency fields
section 3.3.4
Mechanical vibration
section 3.4.1
Apply signal via equivalent capacitance
K65 (Microtech Gefell)
Table 4.2: Test conditions for Tango_Plus
4.1
Microphone with capsule MK255
Only the original microphone capsule MK255 by MICROTECH GEFELL is approved for measurements with
Tango_Plus. Data specific for configuration can be found in the sections 3.1 and 3.2. The acoustic center
point and microphone reference point are located at the middle of the microphone membrane.
Property
Value
Model Transducer type
Capacitive pressure transducer
Polarization
backelectret
Frequency range free-field
3.5 Hz . . . 20 kHz (
±
2 dB)
Sensitivity
ca. 50 mV/Pa
Max. SPL for 3 % , distortion at 1 kHz
146 dB
Self-generated noise with preamplifier
15 dBA
Capacitance
17 pF
Operating temperature range
-50 . . . +100
◦
C
Ambient temperature coefficient
leq
0
.
01
dB/
◦
C
Ambient pressure coefficient
-0.01 dB/kPa
Diameter
1/2”
with protection lid
13,2
±
0,02 mm
without protection lid
12,7
±
0,02 mm
Length
16,4 mm
Weight
7,5 g
Thread for preamplifier
11,7 mm 60 UNS
Thread for protection
12,7 mm 60 UNS
Table 4.3: Technical data MK255
SINUS Messtechnik GmbH
43 of 47
Manual Tango_Plus