AEC206 Reference Manual
426M11 Microphone Preamplifier
A-2
A.2 426M11 Microphone Preamplifier
Performance
Nominal Microphone Diameter 1/2 in
Gain: -0.20 dB
Frequency Response(± 0.2 dB) (re 1 kHz): 10 to
126,000 Hz
Frequency Response (-3 dB) (re 1 kHz): <0.6 Hz
Phase Linearity (<1 °): 63 to 20,000 Hz
Distortion (3 V rms input at 1 kHz): <-70 dB
Output Slew Rate: 2 V/µS
TEDS Compliant: Yes
Environmental
Temperature Range (Operating): -40 to 70 °C
(-40 to 158 °F)
Temperature Range (Storage): -40 to 85 °C (-40 to 185
°F)
Temperature Response: <0.03 dB
Humidity Range (Non-Condensing): 0 to 95% RH
Humidity Sensitivity: <0.03 dB
Electrical
Excitation Voltage: 20 to 32 VDC
Constant Current Excitation: 2 to 20 mA
Impedance (Input): 2x10
10
Ohm (20 G?)
Capacitance (Input): 0.2 pF
Output Bias Voltage: 10 to 14 VDC
Impedance (Output): <50 Ohm ?
Output Voltage: ± 8 V
TEDS Compliant: Yes
Physical
Housing Material: Stainless Steel
Size (Diameter x Length): 12.7 mm x 35.7 mm (0.5 in x
1.4 in)
Weight: 3.6 gm (0.13 oz)
Electrical Connector: BNC Plug
Cable Length: 1.5 m (5 ft)
Mounting Thread (Microphone to Preamplifier): 11.7
mm - 60 UNS
A.3 Isolation Testing
Tested in a random incidence field per 5.2.2 method
in accordance with ISO 4869-3.
FIGURE A-2
Isolation Testing
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
63
80
100
125
160
200
250
315
400
500
630
800
1000
1250
1600
2000
2500
3150
4000
5000
6300
8000
IN
SE
R
TI
O
N L
O
SS (
D
B
)
FREQUENCY (HZ)
Typical Isolation Test Data
Method in Accordance with ISO 4869-3
Required Isolation
Typical Isolation
