MED Associates ANL-930 User manual

instrumentation and software for research
STANDALONE SOUND PRESSURE LEVEL
MEASUREMENT PACKAGE
ANL-930
ENV-269
USER’S MANUAL
DOC-315
Rev. 1.0
Copyright ©2019
All Rights Reserved
Med Associates Inc.
P.O. Box 319
St. Albans, Vermont 05478
Phone: [phone]
Fax: [phone]
www.med-associates.com

ANL-930 SPL MEASUREMENT PKG
notes
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ANL-930 SPL MEASUREMENT PKG
Table of Contents
Chapter 1 | Introduction................................................................................................1
Chapter 2 | Power ...........................................................................................................2
Installing/Replacing the Battery.................................................................................................. 2
6V DC Power Adapter................................................................................................................... 3
Charging......................................................................................................................................... 3
Chapter 3 | ENV-269 Microphone with Positioning Jig...........................................4
Positioning Microphone in Standard Chambers........................................................................ 4
Positioning Microphone in Startle Chambers ............................................................................ 5
Chapter 4 | Operation.....................................................................................................6
Appendix A | Contact Information...............................................................................6
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MED ASSOCIATES INC. ANL- 930 SPL MEASUREMENT PKG
CHAPTER 1 | INTRODUCTION
The ANL-930 Standalone Sound Pressure Level (SPL) Measurement Package offers a level of
stimulus verification and calibration unavailable with other sound level meters or sound
measurement systems.
The ANL-930 SPL Meter is portable and offers the convenience of having a Sound Pressure Level
Measurement solution untethered from a computer or power source due to its onboard
processor and rechargeable battery. The ENV-269 Microphone with Positioning Jig ensures
consistent placement and uniform calibration across multiple chambers.
The ANL-930’s display provides detailed measurements of either noise or pure tone signals in a
convenient, cost-effective, and accurate approach to sound pressure level measurement.
Figure 1.1 – ANL-930 - Standalone Sound Pressure Level Measurement Package
Figure 1.2 – Included 6V DC Power Adapter and *18650 3.7v lithium-ion Rechargeable battery
*NOTE: Battery included in domestic orders only.
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MED ASSOCIATES INC. ANL- 930 SPL MEASUREMENT PKG
CHAPTER 2 | POWER
The ANL-930 can be operated via the included 6V DC Power Adapter and/or the 18650 3.7v
lithium-ion Rechargeable battery. The ANL-930 can be used via the 6V DC Power Adapter while
simultaneously charging the 18650 3.7v lithium-ion Rechargeable battery, using pass-through
technology.
Installing/Replacing the Battery
The ENV-421 battery is designed to last the lifetime of the unit, but is replaceable if needed.
Battery type 18650 3.7v lithium-ion is required when replacing the rechargeable battery.
Figure 2.1 – Battery Compartment (Internal View)
-Ensure the unit is powered off and not plugged into a AC wall outlet.
-Remove 2 screws from the bottom of the ANL-930.
-Turn the device back over so that it is standing on its feet or normal orientation.
-Remove the top cover only, to reveal the battery compartment.
-Take care to ensure battery is installed with proper orientation. The battery
compartment has + and – marked. If those are too hard to see, put the positive side
with the red wire and the negative with the black wire. Reassemble unit.
-Discard old batteries in accordance with your local solid waste authority rules.
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MED ASSOCIATES INC. ANL- 930 SPL MEASUREMENT PKG
6V DC Power Adapter
Using the 6V DC Power Adapter included with the system, connect the +6V DC connector on the
ANL-930 to a standard AC wall outlet.
Figure 2.2 – ANL-930 Back Panel
NOTE: Use ONLY the included 6V DC Power Adapter with the ANL-930.
Charging
The Amber Battery LED will be lit solid while charging. If the amber LED is blinking, the battery
has stopped charging and timed out. If this occurs unplug the unit and then plug it back in.
Battery life is approximately 30hrs and charging time is 7hrs, from empty to full. The amber
charging light will turn off when charging is complete.
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MED ASSOCIATES INC. ANL- 930 SPL MEASUREMENT PKG
CHAPTER 3 | ENV-269 MICROPHONE WITH POSITIONING JIG
The ANL-930 Standalone Sound Pressure Level Measurement Package includes the ENV-269
Microphone with Positioning Jig. The ENV-269 is designed to provide consistent microphone
placement from chamber to chamber, which helps to ensure that all speakers in a system are
uniformly calibrated.
Figure 3.1 - Connect the ENV-269 Cable to the ANL-930 MIC Connector
NOTE: Ensure ANL-930 is powered off when connecting and disconnecting the ENV-269.
Positioning Microphone in Standard Chambers
To use the ENV-269 Microphone with Positioning Jig in a standard chamber:
1. Loosen the thumbscrews so that the positioning guides may be adjusted.
2. Place the ENV-269 in the desired location in the chamber, with the microphone facing the
speaker, as shown in Figure 3.2.
3. Adjust the positioning guides so that they are touching two walls of the chamber, as shown
in Figure 3.2 and tighten the thumbscrews.
4. After calibration, place the ENV-269 in the next chamber to be calibrated, using the
positioning guides to mimic the placement used in the previous chamber.
Figure 3.2 – Top View of the ENV-269 in a Standard Chamber
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MED ASSOCIATES INC. ANL- 930 SPL MEASUREMENT PKG
Positioning Microphone in Startle Chambers
Large Animal Holder
To use the ENV-269 in the ENV-264A and ENV-264B Steel Grid Rod Animal Holders or the ENV-
262B and ENV-262C Round Acrylic Animal Holders, remove the positioning guide indicated
below.
Place the ENV-269 in the animal holder with the microphone facing the speaker (back of the
holder), as shown below. The ENV-269 is designed to fit over the grid floor, allowing the grid
rods to be used for consistent placement from chamber to chamber.
Figure 3.3 - Remove Positioning Guide for Large Animal Holder
Small Animal Holder
To use the ENV-269 Universal Microphone Holder in ENV-264C Animal Holders, remove both of
the positioning guides from the ENV-269. Place the ENV-269 in the animal holder with the
microphone facing the speaker (back of the holder), as shown below.
The ENV-269 is designed to fit over the grid floor, allowing the grid rods to be used for
consistent placement from chamber to chamber.
Figure 3.4 - Remove Both Positioning Guides for Small Animal Holder
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DOC-315 Rev 1.0 Copyright © 2019
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MED ASSOCIATES INC. ANL- 930 SPL MEASUREMENT PKG
CHAPTER 4 | OPERATION
On/Off Switch: Turns the device On/Off. The green LED on the switch is lit when the device is
on. The green LED on the switch flashes when battery power is < 10%.
Figure 4.1 – ANL-930 Front Panel Battery Status
Display:
Battery Status: When the ANL-930 is switched on, the battery status will be briefly
indicated on the display before going into normal operation (BATT NOT DETECTED when battery
is not installed or Battery: % when battery is installed).
Figure 4.2 – ANL-930 Front Panel in Normal Operation
Display:
Normal Operation: After powering on the ANL-930 and a brief battery status, the ANL-
930 will automatically progress into normal operation. The display will show the frequency and
decibel level when introduced to a pure tone. When introduced to white noise or a non-pure
tone the ANL-930 will display NOISE and the decibel level.
APPENDIX A| CONTACT INFORMATION
Please contact Med Associates, Inc. for information regarding any of our products.
Visit our website at www.med-associates.com for contact information.
For technical questions, email [e-mail].
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