Larson Davis PRM2103, Reference Manual

Page: 33 / 91

AEC206 Reference Manual Electrical A-3
Note that a typical 50 mV/Pa microphone has a 15
dB A-weighted noise in addition to the electrical
noise of the preamplifier.
Cable Drive
Control Cable (CBL203, CBL208, and CBL222)
Tested with ADP090 adaptor (12 pF), equivalent to
capacitance of 377B02 microphone.
The standard control cable length is 20 feet, but is
also available in custom lengths up to 100 feet.
Internal Sensor Accuracy
Relative Humidity: ±5% RH
Temperature: ±2 °C
Power
Power Consumption (at 12 V for PRM2103 only)
A.3.1 Frequency Response
FIGURE A-1 Frequency Response Test Report
0 dB Gain
5.0

V
14 dB

V
6.3

V
16 dB

V
22.4

V
27 dB

V
+20 dB Gain
2.5

V
8 dB

V
5

V
14 dB

V
22.4

V
27 dB

V
Length, ft 14 Vpeak 4.2 Vpeak 1.4 Vpeak
100 27 kHz 120 kHz 300 kHz
Calibration Check Status
Heater Option On Off
Off
2.2 mA 0.2 mA
Low
22.2 mA 20.2 mA
High
42 mA 40 mA
Tested electrically using a 12pF capacitor to simulate microphone capacitance. Data reported in dB re 20
P
Pa assuming a microphone sensitivity of 50 mV/Pa.
Temperature: 22.99 °C ± 0.01 °C Humidity: 26.1 %RH ± 0.5 %RH Static Pressure: 87.36 kPa ± 0.03 kPa Technician: Eric Olson
Calibration Date: 17 Jan 2014