Norsonic NOR150, Инструкция по эксплуатации

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159 Norsonic Nor150
Instruction Manual
Nor1209 data
The microphone preamplifier Nor1209 has been
designed for general use with most ½” condenser
microphone of type WS2 or LS2 according to
IEC 61094-4: Measurement microphones - Part 4:
Specifications for working standard microphones. The
microphones may be pre-polarized or use externally
supplied polarization voltage up to 200 V. By the use
of adaptors, the preamplifier may be used for other
microphone sizes. The frequency response covers the
range from below 1 Hz to above 200 kHz.
The Nor1209 preamplifier may be mounted directly on
the sound level meter, or connected via a suitable cable.
The preamplifier is equipped with a system check
facility. By enabling the SysCheck signal in the
calibration menu, the capacitance of the microphone as
well as the complete signal chain from the microphone
cartridge to the sound level meter may be checked.
The voltage gain of the preamplifier is very close to
one or correspondingly 0 dB. As the input impedance
is 10 G
Ω
, the attenuation due to loading of the source
will mainly be determined by the low input capacitance
Nor1209 Technical Specifications
Frequency response (18 pF/small signal):
20 Hz ¬– 20 kHz: ±0,1 dB
Gain:
Typically -0,1 dB (-0,2 with 20 pF)
Input impedance: 10 G
Ω
, 1,4 pF
Output impedance: 50 ohm typical
Noise (20 pF dummy microphone):
A-weighted < 2,2µV (typically 1,8µV)
Noise (20 pF dummy microphone):
Lin (20 Hz – 20 kHz) <6 µV (typ 3,8 µV)
The preamplifier accepts the following voltage i
fused via external power supply.
Power supply:
±14 V(1 mA) to ± 60 V (2,8 mA). The
Nor150 supply ± 15 V to the preamplifier.
Alternative Power supply:
Single: 28 V (1mA) to 120 V (2,8 mA)
Operating temperature range: -25°C to +70°C
Relative humidity: 0 – 90 %RH
Length: 83 mm
Diameter:
12,7 mm (Ring: 18 mm)
Weight: 36 g