Chapter 7 — Low-frequency Pressure-field
1
/
2
" Microphone Type 4193
Electromagnetic Compatibility
Falcon™ Range of Microphone Products
Microphone Handbook
BE1379– 12
7
−
31
7.16 Electromagnetic Compatibility
See Chapter 8.
7.17 Specifications Overview
7.17.1 Low-frequency Pressure Response 1/2" Microphone Type 4193
7.17.2 Adaptor UC0211
OPEN-CIRCUIT SENSITIVITY (250Hz)*:
–38dB
±
1.5 dB re 1V/Pa, 12.5mV/Pa*
POLARIZATION VOLTAGE:
External: 200 V
FREQUENCY RESPONSE*:
Pressure-field response:
0.12 Hz to 12.5 kHz
±
1dB
0.07Hz to 20kHz
±
2dB
In accordance with ANSI S1.4 – 1983, Type 1
and ANSI S1.12, Type M
LOWER LIMITING FREQUENCY (–3 dB):
0.01 Hz to 0.05Hz (vent exposed to sound)
PRESSURE EQUALIZATION VENT:
Side vented
DIAPHRAGM RESONANCE FREQUENCY:
23kHz, typical (90
°
phase shift)
CAPACITANCE (POLARIZED)*:
18pF, typical (at 250 Hz)
EQUIVALENT AIR VOLUME (101.3 kPa):
8.8mm
3
*
Individually calibrated
CALIBRATOR LOAD VOLUME (250Hz):
190 mm
3
PISTONPHONE TYPE 4228 CORRECTION:
with DP 0776:
+0.02 dB
TYPICAL CARTRIDGE THERMAL NOISE:
19.0dB (A) 21.3 dB (Lin.)
UPPER LIMIT OF DYNAMIC RANGE:
3% distortion:
>162 dB SPL
MAXIMUM SOUND PRESSURE LEVEL:
171 dB (peak)
OPERATING TEMPERATURE RANGE:
–30 to +150
°
C (–22 to 302
°
F)
(can be used up to +300
°
C (572
°
F) but with a
permanent sensitivity change of typically +0.4 dB
which stabilises after one hour)
OPERATING HUMIDITY RANGE:
0 to 100 % RH (without condensation)
STORAGE TEMPERATURE:
–30 to +70
°
C (–22 to 158
°
F)
TEMPERATURE COEFFICIENT (250Hz):
–0.002 dB/
°
C, typical (for the range –10 to
+50
°
C)
PRESSURE COEFFICIENT (250Hz):
–0.005 dB/kPa, typical
INFLUENCE OF HUMIDITY:
>1 000 years/dB at 20
°
C
<0.001 dB/100%RH
VIBRATION SENSITIVITY (<1000 Hz):
Typically 65.5 dB equivalent SPL for 1m/s
2
axial
acceleration
MAGNETIC FIELD SENSITIVITY:
Typically 16dB SPL for 80A/m, 50 Hz field
ESTIMATED LONG-TERM STABILITY:
>1 00 hours/dB at 150
°
C
DIMENSIONS:
Diameter
: 13.2 mm (0.52 in) (with grid)
12.7 mm (0.50 in) (without grid)
Height
: 13.5 mm (0.54 in) (with grid)
12.6 mm (0.50 in) (without grid)
Thread for preamplifier mounting
: 11.7mm –
60 UNS
The data above are valid at 23
°
C, 101.3 kPa and
50%RH, unless otherwise specified.
LOWER CUT-OFF FREQUENCY:
0.1 Hz (with
1
/
2
" Microphone Preamplifier Type
2669)
EFFECT ON HIGH FREQUENCY RESPONSE:
100Hz to 10kHz
±
0.1dB
100Hz to 20kHz
±
0.5dB
ATTENUATION:
16 dB
CAPACITANCE:
100 pF, typical
DIMENSIONS:
Diameter
: 12.7mm (0.50 in)
Height
: 14.1 mm (0.56 in)
Thread for preamplifier and microphone mount-
ing: 11.7 mm – 60 UNS
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