Type 46BF


Type 46BF
A combination of ¼″ Free-field Microphone Type 40BF and ¼″ Preamplifier Type 26TC with 7-pin LEMO connector (Fig. 2).
Specifications Type 46BF (free-field response)
Frequency response (see also Fig. 3):
4 Hz - 100 kHz: . . . . . .± 2.0 dB
10 Hz - 40 kHz: . . . . . . ± 1.0 dB
Nominal sensitivity:
4 mV/Pa
Polarization voltage:
200 V
Dynamic range:
Upper limit (3% dist.): . . . . . . . . . . . 166 dB re. 20 μ Pa
Lower limit (thermal noise): . . . . . . .36 dBA re. 20 μ Pa
Output impedance:
Typical: . . . . . .55 Ω
Power supply:
Single: . . . . . .28 V (0.7 mA) to 120 V (2.5 mA)
Dual: . . . . . .± 14 V (0.7 mA) to ± 60 V (2.5 mA)
Maximum signal-output voltage (peak):
from ± 10 V to ± 50 V
Temperature:
Operation: . . . . . .– 40 oC to + 150 oC
Coefficient (250 Hz): . . . . . . . . . . . . . . . . . 0.01 dB / °C
Static-pressure coefficient:
– 0.008 dB / k Pa
Humidity range:
0 - 100% (non condensing)
Influence of humidity (250 Hz):
< 0.1 dB (0 - 100%)
Influence of axial vibration, 1 m/s2:
59 dB re. 20 μ Pa
Connector:
LEMO: . . . . . .7-pin 1B male plug
Dimensions and weight (ex cable):
Diameter: . . . . . .7 mm
Length: . . . . . .52 mm
Weight: . . . . . .8.3 g
With cable: . . . . . .51 g
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