Larson Davis PRM2103, Reference Manual

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AEC206 Reference Manual Electrical A-2
A.3 Electrical
Tested with ADP090 adaptor (12 pF), equivalent to
capacitance of 377B02 microphone
.
Self-Generated Noise (with 377B02 Micro-
phone)
Self-generated noise levels are time-averaged sound
levels.
Electrical Noise
Tested with ADP090 adaptor (12 pF), equivalent to
capacitance of 377B02 microphone.
Microphone Bias 0 V
Input Impedance 10 G

// 0.1 pF (typical)
Gain (unweighted) -0.1 dB at 1 kHz (typical)
Max Input Level (for THD < -30 dB) ± 18 V peak (142 dB re. 20

Pa)
Max Output Level (typical) ± 14 V peak (143 dB peak using 50 mV/Pa mic)
Max Output Current 10 mA
Output Impedance 50

(typical)
Total Harmonic DistN < -60 dBc at 8V rms and 1 kHz
Power Supply 10 V to 15.5 V (12 V Nominal)
Isolated from preamp circuitry for ground loop
protection.
Output Slew Rate > 3 V/

S
Phase Linearity 10 Hz to 32 Hz: -3° to 10°
32 Hz to 100 kHz: < ± 3°
The output is in phase with the input electrical
signal. A positive change in acoustic pressure
will give a positive output.
Calibration Check Level at 1 kHz 94 dB ± 2 dB
Calibration Check Level - Other Fre-
quencies
+/- 1.0 dB relative to 1 kHz
Calibration Check Frequencies 31.25, 250, 1000, 4000, & 8000 Hz
Calibration Check Sensitivity ± 0.005 dB/

C
(typical)
Dynamic Range 124 dB; 16 dB noise floor to 140 dB re. 20

Pa
with input electrically tested through an
ADP090 adaptor (12 pF)
A Weight C Weight Z Weight
0 dB Gain (typical)
18 dB
re. 20

Pa
19 dB
re. 20

Pa
28 dB
re. 20

Pa
0 dB Gain (max.)
19 dB
re. 20

Pa
24 dB
re. 20

Pa
31 dB
re. 20

Pa
+20 dB Gain (typical)
16 dB
re. 20

Pa
18 dB
re. 20

Pa
28 dB
re. 20

Pa
+20 dB Gain (max.)
17 dB
re. 20

Pa
20 dB
re. 20

Pa
33 dB
re. 20

Pa
A Weight C Weight Z Weight