Model : 426A30 | Microphone Preamplifier

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1/2-inch preamplifier with 7-pin lemo conn. (for externally polarized microphones)
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1/2-inch preamplifier with 7-pin LEMO conn. (for externally polarized microphones)

  • Nominal Microphone Diameter: 1/2"
  • Temperature Range: -40 to +185 °F ( -40 to +85 °C)
  • Output Voltage: 28 Vpp
  • Size - Length: 5.2 in ( 132 mm)

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English: SI:
Performance
Nominal Microphone Diameter 1/2" 1/2"
Gain -0.2 dB -0.2 dB [ 1]
Frequency Response (±0.10 dB) 10 to 126000 Hz 10 to 126000 Hz [ 2]
Frequency Response (-0.5 to +0.10 dB) 3 to 10 Hz 3 to 10 Hz [ 2]
Frequency Response (-3 dB) <1.2 Hz <1.2 Hz [ 2]
Electrical Noise (A-weight) <2.8 µV <2.8 µV [ 2]
Electrical Noise (Flat 20 Hz to 20 kHz) <5.0 µV <5.0 µV [ 2]
Distortion (6 V rms input at 1 kHz) <-70 dBc <-70 dBc
Output Slew Rate 8 V/µS 8 V/µS [ 1]
Environmental
Temperature Range (Operating) -40 to +185 °F -40 to +85 °C
Temperature Response (-40 to +149 °F (-40 to +65 °C)) <0.05 dB <0.05 dB
Humidity Range (Non-Condensing) 0 to 90 %RH 0 to 90 %RH
Humidity Sensitivity (at +104 °F (+40 °C)) <0.05 dB <0.05 dB
Electrical
Excitation Voltage (Dual Supply) ±10 to ±18 V ±10 to ±18 V
Excitation Voltage (Single Supply) 20 to 150 V 20 to 150 V
Current Draw <1.7 mA <1.7 mA [ 1]
Impedance (Input) 10000000000 Ohm 10000000000 Ohm [ 1]
Capacitance (Input) 0.36 pF 0.36 pF [ 1]
Output Bias Voltage (Dual Supply) ≤1 VDC ≤1 VDC
Output Bias Voltage (Single Supply) 17 VDC 17 VDC [ 1]
Impedance (Output) <50 Ohm <50 Ohm
Output Voltage (with +36 V power supply) 28 Vpp 28 Vpp
Output Current ≤20 mA ≤20 mA
Physical
Housing Material Stainless Steel Stainless Steel
Size - Diameter 0.5 in 12.7 mm
Size - Length 5.2 in 132 mm
Electrical Connector 7-pin LEMO FGG.1B.307 7-pin LEMO FGG.1B.307
Mounting Thread (Microphone to Preamplifier) 0.4606 - 60 UNS 11.7 mm - 60 UNS
* All specifications are at room temperature unless otherwise specified
.




Specification Notes


[ 1] Typical.
[ 2] Measured with an 18 pF reference microphone.
[ 1] Typical.
[ 3] See PCB Declaration of Conformance PS083 for details.


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