Larson Davis SoundAdvisor 831C Reference Manual page 173

A.2.1 Model PRM831 Specifications
Table A.7
Frequency Response
Attenuation
Input Impedance
Output Impedance
Maximum Output
Maximum Output Current
DistortionHarmonics
Output Slew Rate
Electronic Noise
Power Supply Voltage
DC Output Level
Power Supply Current
Temperature Sensitivity
Humidity Sensitivity
Dimensions
Microphone Thread
Cable Driving Capability (<0.1 dB error)
SoundAdvisor Model 831C
With respect to the response at 1 kHz with 1 Volt
rms input and 12 pF equivalent microphone, the
frequency response is as follows:
8 Hz to 16 Hz +0.1, -0.2 dB
16 Hz to 100 kHz +0.1, -0.1 dB
Lower -3 dB limit < 1.5 Hz
0.1 dB (typical)
10 G Ohm // 0.16 pF
50 Ohm
28 Vpp 143 dB peak for microphones with 50 mV/
Pa sensitivity
12 mA peak
<-70 dBC with 8 Volt rms output at 1 kHz
2 V/µS (typical)
with 12 pF equivalent microphone
1.8 µV typical A-weighted (2.4 µV max)
4.3 µV typical Flat 20 Hz to 20 kHz (5.0 µV max)
15 to 36 Volts
~1/2 power supply voltage
1.9 mA typical
<±0.05 dB from -40° to +80° C (14° to +176 °F)
<±0.05 dB from 0 to 90% RH, non-condensing at
50° C (122 °F)
12.7 mm diameter x 73 mm length (0.50" diameter
x 2.88" length)
11.7 mm - 60 UNS (0.4606 - 60 UNS)
Model 831 SLM: 10 V rms output signal, full scale
• To 50 kHz with 10' (3 m) cable
• To 25 kHz with 200' (61 m) cable
• To 20 kHz with 328' (100 m) cable
• To 18 kHz with 400' (122 m) cable
• To 15 kHz with 500' (152 m) cable
• To 6.3 kHz with 1000' (305 m) cable
Model 831: 3 V rms signal, 10.5 dB below full scale
• To 80 kHz with 200' (61 m) cable
• To 63 kHz with 328' (100 m) cable
• To 50 kHz with 500' (152 m) cable
To 10 kHz with 1000' (305 m) cable
A-9