Larson Davis PRM2103 User manual

Model PRM2103
Outdoor Microphone
Preamplifier

I2103.01 Rev C
Larson Davis
PRM2103
Preamplifier
Reference Manual

PRM2103 Reference Manual i-2
Copyright
Copyright 2017 PCB Piezotronics, Inc. This manual is copyrighted, with all rights reserved. The manual may
not be copied in whole or in part for any use without prior written consent of PCB Piezotronics, Inc.
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with local law: Even though PCB Piezotronics, Inc. has reviewed its documentation, PCB Piezotronics, Inc.
makes no warranty or representation, either expressed or implied, with respect to this instrument and
documentation, its quality, performance, merchantability, or fitness for a particular purpose. This
documentation is subject to change without notice, and should not be construed as a commitment or
representation by PCB Piezotronics, Inc. This publication may contain inaccuracies or typographical errors.
PCB Piezotronics, Inc. will periodically update the material for inclusion in new editions. Changes and
improvements to the information described in this manual may be made at any time.
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Attn: Recycling Coordinator
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TermsConditions.aspx.
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Website
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E-mail: [email protected]om

PRM2103 Reference Manual ii-1
Table of Contents
Module 1 Overview 1-1
1.1 Description ...........................................................................................................................................................1-1
1.2 Features ................................................................................................................................................................1-3
1.3 Supplied Accessories .........................................................................................................................................1-3
Module 2 Getting Started 2-1
2.1 Overview ...............................................................................................................................................................2-1
2.2 Environmental Protection Systems ................................................................................................................2-1
2.3 Wiring ....................................................................................................................................................................2-2
2.4 EPS Installation ...................................................................................................................................................2-4
2.5 Verifying Preamp Operation .............................................................................................................................2-5
2.6 Setting PRM2103-FF Corrections .....................................................................................................................2-6
Module 3 Operation 3-1
3.1 Overview ...............................................................................................................................................................3-1
3.2 Performing the Acoustic Calibration ..............................................................................................................3-1
3.3 PRM2103 Heater Controls .................................................................................................................................3-3
3.4 Performing Calibration Checks ..................................................................................................................... 3-10
3.5 Upgrading the PRM2103 Firmware .............................................................................................................. 3-16
Appendix A Technical Specifications A-1
A.1 Overview .............................................................................................................................................................. A-1
A.2 Standards Met by PRM2103 ............................................................................................................................. A-1
A.3 Electrical .............................................................................................................................................................. A-2
A.4 Physical ................................................................................................................................................................ A-5
A.5 PRM2103 Corrections ........................................................................................................................................ A-9
A.6 Acoustical Response ....................................................................................................................................... A-12
A.7 Cables ................................................................................................................................................................. A-43
A.8 CE Declaration of Conformity ........................................................................................................................ A-45
Appendix B Legacy Operation B-1
B.1 Overview .............................................................................................................................................................. B-1
B.2 Performing the Acoustic Calibration ............................................................................................................. B-1
B.3 PRM2103-FF Heater Controls .......................................................................................................................... B-2
B.4 Performing Calibration Checks ....................................................................................................................... B-8
B.5 Upgrading Firmware with SLM Utility-G3 ....................................................................................................B-15

PRM2103 Reference Manual Description 1-1
Module 1Overview
1.1 Description ............................................................................................................................................ 1-1
1.1.1 Application ............................................................................................................................ 1-2
1.2 Features ................................................................................................................................................. 1-3
1.3 Supplied Accessories .......................................................................................................................... 1-3
1.3.1 Other Accessories ................................................................................................................ 1-3
1.1 Description
TAKE NOTE Use connected
sound level meter microphone
corrections with the PRM2103-
FF.
The Larson Davis PRM2103 Outdoor Microphone Preamplifier has been
designed for use with EPS2116, EPS2106-3, and EPS2108-3 Environmental
Protection Shrouds and model 831 sound level meters (SoundAdvisor
Model 831C and Model 831). It includes remotely-activated, multi-
frequency calibration check functionality and desiccant-free automatic
heaters for internal humidity control. The PRM2103 requires only one
microphone to get free-field, random, or 90 degree response.
FIGURE 1-1 PRM2103-FF Outdoor Microphone Preamplifier
FIGURE 1-2 Outdoor Microphone System as part of an EPS2116
Bird Spike
Windscreen
Base
Tripod Adaptor

PRM2103 Reference Manual Description 1-2
With the supplied 377B02 microphone, the PRM2103-FF provides
frequency response characteristics consistent with precision sound level
meter requirements for free-field measurements when used with Larson
Davis sound level meters.
1.1.1 Application
The PRM2103-FF is an integral component of an outdoor noise
monitoring system, like the SoundAdvisor NMS044 noise monitoring
system.
FIGURE 1-3 Remote Noise Monitoring System (SoundAdvisor NMS044)
EPS2116 with
PRM2103-FF
CBL222-08 cable
Pole
SoundAdvisor Model
831C Sound Level
Meter
Solar panel

PRM2103 Reference Manual Features 1-3
1.2 Features
The Larson Davis PRM2103-FF Outdoor Microphone Preamplifier provides
the following features:
• Permanent outdoor noise monitoring for IEC 61672 Class 1 mea-
surements (with 377B02 microphone and EPS2116, EPS2106-3 or
EPS2108-3). Group Z compliant
• For use with Larson Davis EPS2116, EPS2106-3 or EPS2108-3 envi-
ronmental protection shroud and Model 831 and SoundAdvisor
Model 831C sound level meters
• Automatic calibration check at five frequencies, including 31.5,
250, 1000, 4000, and 8000 Hz
• Internal humidity and temperature sensor for automatic micro-
phone humidity control
• Free-field, random or 90 degree response with single 377B02
microphone using digital correction in the Model 831 sound level
meter
• 50mV/Pa microphone sensitivity for 16 dB to 140 dB typical range
• Protection from rain, wind, and birds when used with EPS2116,
EPS2106-3, or EPS2108-3 environmental protection shroud
• Single cable connectivity
• On-screen device monitoring for connection with the Model 831
and SoundAdvisor Model 831C sound level meters
• Stainless steel construction
1.3 Supplied Accessories
• Prepolarized 377B02 1/2” free-field microphone
• Manual on CD
1.3.1 Other Accessories
Sound Level Meter • SoundAdvisor Model 831C Sound Level Meter
• Model 831 Sound Level Meter
Environment Protection • EPS2116 Outdoor Microphone and Preamplifier Protection,
including rain, wind, and bird protection
• EPS2106-3 or EPS2108-3 Environment Protection Shroud, includ-
ing rain, wind, and bird protection
Power Supplies PSA027 DC Power Supply
• Input: 100 to 240 Vac; 47-63 Hz

PRM2103 Reference Manual Supplied Accessories 1-4
• Output: 12 Vdc, 1.6 A
• 2.5 x 5.5 mm barrel connector
Cables Used with Model 831-INT or 831-INT-ET
• CBL208-20
• CBL208-XX
Used with Model 831 or SoundAdvisor Model 831C
• CBL203-20
• CBL203-XX
• CBL222-XX
Calibrators CAL200 Class 1 Sound Level Calibrator, 94/114 dB @ 1 kHz
CAL250 Class 1 Sound Level Calibrator, 114 dB @ 250 Hz
Software G4 LD Utility
SLM LD Utility-G3

PRM2103 Reference Manual Overview 2-1
Module 2Getting Started
2.1 Overview
2.1 Overview ................................................................................................................................................ 2-1
2.2 Environmental Protection Systems ................................................................................................. 2-1
2.3 Wiring ...................................................................................................................................................... 2-2
2.4 EPS Installation .................................................................................................................................... 2-4
2.5 Verifying Preamp Operation .............................................................................................................. 2-5
2.5.1 With Model 831 ..................................................................................................................... 2-5
2.5.2 With SoundAdvisor Model831C ........................................................................................ 2-5
2.6 Setting PRM2103-FF Corrections ...................................................................................................... 2-6
This module describes the mounting and setup of the PRM2103-FF
preamplifier, wiring with supported instruments, and basic operation.
2.2 Environmental Protection Systems
LEARN MORE For basic
mounting steps for the
EPS2116, see 2.4 "EPS
Installation" on page 2-4.
The PRM2103-FF is designed to be mounted on three Larson Davis
products for outdoor noise monitoring. To learn more about these
environmental protection systems and their mounting procedures, see
the following reference manuals:
• Larson Davis EPS2116 Outdoor Microphone and Preamplifier Pro-
tection Manual
• Larson Davis EPS2106 Environmental Shroud Technical Reference
Manual
• Larson Davis EPS2108 Environmental Shroud Technical Reference
Manual

PRM2103 Reference Manual Wiring 2-2
2.3 Wiring
The PRM2103 uses a single cable for both signal and control functions,
but provides differing connections, depending on whether you are
connecting to the 831 sound level meters or to the 831-INT, as follows:
Sound Level Meters
The CBL203 connects the PRM2103 to Larson Davis sound level meters, as
shown in Figure 2-1.
FIGURE 2-1 Connection to 831/831C Only
SoundAdvisor NMS044 Connections
When connecting the PRM2103 to the sound level meter, the CBL222-08
cable should be routed through the cable gland on the case. For more
information, refer to the Larson Davis EPS044 & NMS044 Manual.
When connecting the PRM2103 to NMS044, follow Figure 2-2 as shown
below.
FIGURE 2-2 Connection to NMS044