ACR Electronics ACR-PLB-350 Personal Locator Beacon User Manual
ACR Electronics, Inc. Personal Locator Beacon Users Manual
Users Manual
i
Y1-03-0241 rev T2
PRODUCT SUPPORT MANUAL
PLB350 series
GPS Personal Locator Beacons
Model No.: PLB-350A, PLB-350B
Product Variants: PLB-350A Float, PLB-350A Slim,
PLB-350B Float, PLB-350B Slim
Y1-03-0241 Rev. T2
Personal Locator Beacon (PLB)
2
Y1-03-0241 rev T2
Table of Contents
SECTION 1 – REGISTRATION OF 406 MHZ BEACONS ___________________________________ 3
SECTION 2 – RESPONSIBLE USE ______________________________________________________ 5
SECTION 3 – OPERATION _____________________________________________________________ 6
SECTION 4 – ACCESSORIES __________________________________________________________ 8
SECTION 5 – CARE AND MAINTENANCE _______________________________________________ 9
SECTION 6 – THE SEARCH AND RESCUE SYSTEM _____________________________________ 9
SECTION 7 – TECHNICAL INFORMATION _____________________________________________ 11
APPENDIX PHOTOS OF BEACON ON-GROUND AND ABOVE-GROUND CONFIGURATIONS ___________ 13
Foreword
Thank you for purchasing from ACR Electronics, Inc. We design, manufacture and distribute quality products knowing
they are used to save lives. Many of our products are required to be tested and approved by regulatory bodies
worldwide. We believe in going beyond those specifications to insure our products work when needed in real world
conditions. With proper care and maintenance your ACR product will last for years. It is important that you thoroughly
read this product support manual to understand the proper care and use of your ACR product.
ACR is proud to be certified to ISO 9001:2000, the International Standard for Quality.
Summary of products
This manual provides operation and maintenance instructions for Personal Locator Beacons (PLBs), models PLB-
350A and PLB-350B. This manual also describes the characteristics and details of the PLB350 series.
Model
PLB
-
350A
PLB
-
350
A
PLB
-
350B
PLB
-
350B
ACR Product
Variant
s
PLB-350A Slim PLB-350 Float PLB-350B Slim PLB-350B FLoat
Category
Category II Category I* Category II Category I*
GPS engine
none none Internal Internal
Top case
Opaque Opaque Clear Clear
*Floatation bottom
case
Slim bottom case Larger bottom case Slim bottom case Larger bottom case
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SECTION 1 – REGISTRATION OF 406 MHZ BEACONS
1.1 Registration Importance (Registration is FREE and can be updated as many times as you want)
It is mandatory that the owner of this 406 MHz beacon registers it with the national authority*. All 406 MHz
beacons transmit a Unique Identifier Number (UIN) when activated. This UIN is programmed in the PLB based
on the country in which the beacon was purchased. Registration provides the Search and Rescue (SAR)
forces with emergency contact information, and will speed the launch of a rescue operation. The National
Authorities use the information to verify if an actual emergency exists. Valuable Search and Rescue personnel
are put at risk and resources are wasted every year responding to false alerts. For beacons that are not
registered, SAR authorities will not know who you are, or who to contact regarding additional information about
your current situation. This could delay the launch of a rescue operation.
*The national authority is the governmental body that is responsible for Beacon Registration Database
administration in the country for which the beacon is programmed.
1.2 Where to Register
You must register your beacon with the national authority of your resident country. Verify that your beacon’s
UIN is programmed for your resident country, regardless of where you do your adventuring. To verify the
country for which a beacon is programmed, see the label with the UIN on the back of the unit. Units that do not
have a country specified on the UIN label are programmed for the United States. If you should move to a new
country, you must register your beacon with the national authority of that country and have the UIN
reprogrammed for that country (if necessary). For a list of the national authorities in your area, please view
them at http://www.cospas-sarsat.com/Management/listOfParticipants.htm
1.3 Registration in the United States
It is your responsibility to register your 406 MHz beacon(s) that are programmed for and purchased in the
United States. The national authority that accepts registrations in the United States is the National Oceanic
and Atmospheric Administration (NOAA).
There are three options by which the beacon can be registered:
A. The fastest and easiest way to register your beacon with NOAA is to use the online registration database.
B. If the internet is not accessible to you, complete the enclosed registration form. Do not confuse this with
the ACR Electronics warranty card. Mail with the pre-addressed, postage paid envelope to:
C. Faxing your registration is also acceptable. Fax the registration form to fax # +1 (301) 817-4565.
Note that the information you provide on the registration form is used only for rescue purposes. Complete and
send the registration immediately. All registration forms will be entered in the 406 MHz beacon registration
database within 48 hours of receipt.
For the fastest service, register online!
In the United States:
www.beaconregistration.noaa.gov
NOAA SARSAT Beacon Registration
NSOF, E/SP3
4231 Suitland Road
Suitland, MD 20746
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A confirmation letter, a copy of the actual registration and a proof-of-registration decal will be mailed to you
within two weeks. When you receive these documents, please check the information carefully, then affix
the decal to your beacon in the area marked “BEACON DECAL HERE.” If you do not receive confirmation
back from NOAA in the expected timeframe, call toll free +1 (888)-212-7283 for assistance.
1.4 Registration in Canada
The national authority in Canada is the NSS (National Search & Rescue Secretariat). Canadian residents can
register online at http://beacons.nss.gc.ca/. For more information please contact the NSS at +1 (613) 966-1504
or +1 (800) 727-9414.
1.5 Registration in Other Countries
In countries other than the United States and Canada, 406 MHz beacons are registered with that country’s
national authority at the time of purchase. The sales agent should assist in filling out the forms and sending to
that country’s national authority. To verify that the unit is properly programmed for that country, view the UIN
label on the side of the unit. In the event that the beacon is not programmed for the country it has been
purchased in, the sales agent, (if properly equipped) can reprogram the unit for that country.
1.6 Change of Ownership or Contact Information
It is your responsibility to advise the national authority of any change in the information on the registration
form. If the current owner of the beacon is transferring the beacon to a new owner, the current owner is
required to inform the national authority by using their online database or by letter, fax or telephone, of the
name and address of the new owner. The new owner of the beacon is required to provide the national
authority with all of the information requested on the registration form. This obligation transfers to all
subsequent owners. Registration forms for the United States are available from NOAA by calling
1 (888) 212-7283 or by visiting our website at www.acrelectronics.com.
1.7 Lost or Stolen Beacons
Things you need to do if your beacon is stolen:
• Report to your local authorities that the beacon has been lost or stolen.
• Contact NOAA at 1-888-212-SAVE (7283), or your national authority, with the following information so
your beacon registration information can be updated with the appropriate remarks:
o Police Department Name
o Police Phone Number
o Police Case Number
If the beacon were to be activated, the information you provided will be forwarded to the appropriate search
and rescue authorities who will ensure that your beacon gets back to you. If someone attempts to register an
beacon reported as stolen, NOAA or your national authority will notify the appropriate police department. Visit
www.cospas-sarsat.org for more detailed information.
National Search and Rescue Secretariat
400-275 Slater Street
Ottawa, Ontario K1A 0K2
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SECTION 2 – RESPONSIBLE USE
A Personal Locator Beacon is a distress signaling device of last resort, for use when all other means of self-
rescue have been exhausted; where the situation is grave and imminent, and the loss of life, limb, eyesight or
valuable property will occur without assistance. Deliberate misuse may incur a severe penalty.
2.1 Prevention of False Alerts
A false alert is any activation of the beacon, intentional or otherwise, that does not result from a situation of
grave and imminent danger.
Be sure to do the following:
• Register your beacon. This does not reduce false alert rates; however, it does have a dramatic effect
on the impact of a false alert. When the beacon is properly registered, the situation can be resolved
with a phone call.
• Be careful who you leave your beacon with. Make sure that they how to use it, and that they
understand the ramifications of causing a false alert. A lot of false alerts are generated by curious
individuals. If you notice the beacon is flashing the red or green LED and BEEPING periodically on its
own, this likely means it has accidentally been activated and needs to be shut off and reported.
The COSPAS- SARSAT satellites detect distress beacon transmissions immediately. These satellites will
locate the transmission within a few minutes of the beacon activation. This is good if you are in distress, but if
you are not, you just generated a false alert.
NOTE: If you report a false alert and the authorities have not received the signal, don’t worry. This may mean
the beacon was deactivated before transmitting the signal.
2.2 Reporting of False Alerts
A false alert must be reported to the nearest search and rescue authorities. The information reported must
include the beacon Unique Identifier Number (UIN), date, time, duration and cause of activation, as well as
location of beacon at the time of activation. If the beacon is registered outside of the United States, contact
your national authority.
United States Air Force Rescue Tel: 1-800-851-3051
Coordination Center (AFRCC)
False alerts that are rectified must be reported to the AFRCC to let them know that the situation has been
corrected and everything is fine. Responsibly reporting these events to the AFRCC or your proper authority will
not incur a penalty, but deliberate misuse or not notifying the proper authority may incur a severe penalty.
TO REPORT FALSE ALERTS WORLDWIDE, CONTACT THE NATIONAL AUTHORITY WHERE YOUR
BEACON IS REGISTERED.
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SECTION 3 – OPERATION
The PLB350 beacon models are designed to be manually deployed and activated. They are only to be
activated when all other means of self-rescue have been exhausted. When properly registered as required, the
activation of the beacon tells Search and Rescue who you are, where you are, and that you are facing a life
threatening situation.
Note that the keypad functions for all PLB350 models are the same and in the same location. See Figure 2.
NOTE: Reference to GPS functionality in Figure 2 applies only to those PLB-350B models that are equipped
with an internal GPS system.
3.1 Activation (406 MHz and 121.5 MHz)
To activate your beacon in a distress situation, follow these steps:
1) Unfasten the antenna from the case.
2) Move it into the upright position (see Figure 3 below).
3) Depress the ON/OFF button for 1 full second.
You will hear a BEEP and your beacon is now activated. While transmitting your distress signal, the red LED
will flash once every 2 seconds alerting you that your beacon is active. An additional BEEP will sound every
time your beacon transmits data to the satellites (roughly every 50 seconds).
Figure 2 - Key Pad Functions
Self- test/ GPS Button
Activation Diagram
When activated:
(Red LED) 406 MHz Only
(Green LED) 406 MHz
includes GPS data
ON / OFF Button
Figure 3 - Activation
(IR LED) Programming Interface
(Not owner accessible)
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3.2 406/121.5 Antenna Position
For maximum performance you must deploy the beacon antenna into the proper position (see Figure 3). If at
all possible, be sure the antenna is positioned facing the sky and avoid submerging in water. This device is
intended to operate on or above the ground only: It is not intended to operate while floating in water.
3.3 Activation with GPS (PLB-350B only)
Your beacon is equipped with an internal GPS receiver if you purchased the PLB-350B model. Once activated,
the GPS engine will start up and search to find your LAT/LON and incorporate it into your 406 MHz signal. As
soon as the GPS receiver acquires good positioning data the red LED will stop blinking and the green LED will
begin flashing once every 2 seconds.
The same GPS data will be sent with each 406 MHz signal for the next twenty minutes. At that time the
internal GPS will start up again, search to find your LAT/LON and incorporate it into your next 406 MHz signal.
If for any reason the internal GPS cannot update your LAT/LON, your last position will be used for the next
four hours. At that time the green LED will stop blinking and the red LED will flash once every 2 seconds until
new GPS data is obtained.
3.4 GPS Receiver Orientation
When a model PLB350B with GPS is activated, it is critical that you do not cover the beacon with any body
part, water, clothing, etc. The GPS receiver is located under the bottom portion of the case behind the
ResQFix™12 or MicrOFix™12 logo. To ensure optimum performance of the GPS receiver, the beacon needs
to have an unobstructed view of the sky.
3.5 Deactivation
To deactivate your beacon, depress the ON/OFF button for 1 second. Once the beacon is
deactivated, all blinking LED’s will stop, signifying that the beacon is no longer sending your distress message.
3.6 Self- test
ACR strongly recommends performing the Self- test once per month, or at least two weeks prior to a trip
allowing enough time for service should your beacon require it.
A Self- test is initiated by holding the Self- test button for at least ½ second and less than 5 seconds.
Your beacon will sound an initial beep and flash the green LED to signify the test has begun. The green LED
will flash a second time to indicate that the self test was successful.
NOTE: The beep is a very high pitch that many people are unable to hear.
Components Tested: Data Integrity and Memory; 406 MHz Synthesizer; RF Power/Battery; GPS header
If a red LED flashes at the completion of the Self- test, your beacon has failed. Repeat the Self- test. If the
failure persists, contact ACR Electronics or an authorized Battery Replacement Center for servicing of your
beacon.
NOTE: During a Self- test your beacon will send a 406 MHz signal coded as Self-test to the satellite system.
The 121.5 MHz homing signal is inhibited during Self- test; this allows you to test your beacon any time during
the day without causing false alerts.
Self Test Sequences Self Test Guide ( Green LED Red LED)
Green LED, 4 BEEPS, Green LED Successful Self- test
Green LED, Less than 4 BEEPS, Red LED Failed Self- test – Return beacon to ACR
Red LED, 4 BEEPS, Green LED Successful Self- test – At least 1 hour of battery
power has been depleted, have battery replaced.
Red LED, Less than 4 BEEPS, Red LED Failed Self- test – Return unit to ACR for service.
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Figure
4
-
Belt
Clip
3.7 Battery Witness Seal Life
If your beacon flashes an initial red LED at the beginning of the Self- test, this indicates that your electronic
witness has been broken and you have used more than 1 hour of battery life for the PLB-350A models and
more than 1 hour 20 minutes for the PLB-350B models. While the beacon will still operate normally in a
distress situation, ACR strongly recommends you have your battery replaced and the electronic witness reset
to ensure that you will have 24 hours of battery power.
3.8 GPS Testing (GNSS Self-Test)
This test is NOT required as 100% of all GPS receivers that leave ACR have been tested to ensure they
perform correctly. However, if you would like to ensure your GPS receiver is working, please follow these
instructions very closely.
CAUTION: For PLB-350B models, the following test should not be performed more than twelve times
during the life of the battery pack. Once this GPS testing feature reaches 12 times, the feature will be disabled
by internal software.
NOTE: The GPS receiver is located under the bottom front portion of the case. It is imperative that the receiver
is not obstructed during Self- test or activation to ensure that the GPS receiver is acquiring your latitude (LAT)
and longitude (LON) position. This test must be performed outside with a clear view of the sky.
Press the self-test button for greater than 5 seconds. Observe the beacon for the entire GPS test. A BEEP and
green LED will indicate that the GPS has been turned ON. The beacon will BEEP every 5 seconds and the
GPS will remain ON until LAT/LON coordinates have been obtained or until 2 minutes have elapsed. If good
LAT/LON data has been obtained, a single 406MHz test burst will be sent out with location data and the GPS
will be turned OFF and the green LED will light for at least 3 seconds along with a long beep. This LAT/LON
data is not saved for use. The green LED indicates that the GPS is functioning properly and that the beacon is
in a location or environment where it can receive the necessary signals from satellites. If the GPS does not
acquire good LAT/LON data, the GPS will turn OFF after 2 minutes, followed with a RED LED light up for 3
seconds along with a long beep, and no 406MHz burst sent out.
GPS Test Sequ
ences (max
imum
duration
121
seconds
)
GPS Test Guide
Green LED and BEEP at start followed by continuous
BEEPS every 5 seconds, Green LED & Long BEEP
Successfully acquired GPS data, 406 MHz
burst sent out with location data
Green LED and BEEP at start followed by continuous
BEEPS every 5 seconds, Red LED & Long BEEP
GPS data was not successfully acquired, no
burst sent out.
SECTION 4 – ACCESSORIES
4.1 Multi-Function Belt Clip
The TerraFix™ 406 and MicrOFix™12 come standard with a multi-
functional belt clip. To install the clip, simply align the bottom tabs on the
clip with the insert holes located on the bottom of the beacon. Snap the clip
in place by pressing the top of the clip so that the two top tabs engage in
the two insert holes on the top of the beacon (see Figure 4). To remove the
clip, push up and back on the top tabs one at a time to disengage the clip
from the beacon.
The belt clip has been designed to accommodate your extreme
adventures. You can secure your beacon directly to backpack webbing
straps, life jackets or belts to ensure the beacon is close at hand. ACR
recommends that you secure your beacon someplace on your person that
is easily accessible in case of an emergency for rapid activation. Ensure
the beacon is secured firmly and is protected before heading out to avoid
damage or loss.
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SECTION 5 – CARE AND MAINTENANCE
5.1 Routine Maintenance
Carefully inspect the beacon case for any visible cracks. Cracks may admit moisture, which could falsely
activate the beacon or otherwise cause a malfunction. Any cracking observed should be immediately referred
to ACR for evaluation by calling 1-800-432-0227 in the US, or +1-954-981-3333 elsewhere. ACR technical
support can also be reached by sending an email to service@acrelectronics.com.
After checking the beacon case for cracks, it may be wiped down with a clean, damp cloth. Do not use any
type of cleaner on your beacon.
5.2 Battery Replacement
The battery must be replaced by the date indicated on the beacon or every five (5) years. At each inspection,
check the time remaining until replacement is required. The battery should be replaced if the beacon has been
activated for any use other than the self test. Always refer all long life battery replacement and other beacon
service to a factory authorized service center. Battery replacement includes servicing the beacon by replacing
all o-rings, testing the water seal and the electrical properties.
NOTE: There are no user serviceable items inside the beacon. DO NOT OPEN THE BEACON.
For the nearest location of a Battery Replacement Center, visit our website at www.acrelectronics.com
The beacon may or may not require special shipping instructions due to the lithium batteries and changes in
shipping regulations. Call ACR’s customer service department at +1 (954) 981-3333 ext. 2110 for proper
shipping instructions.
SECTION 6 – THE SEARCH AND RESCUE SYSTEM
6.1 General Overview
Beacons provide distress alerts via radio transmission on 406 MHz to the LEOSAR satellites of the Cospas-
Sarsat network. Some beacons can also transmit a distress alert (acquired by the internal GPS) to the
GEOSAR network that includes GPS latitude and longitude coordinates.
The message transmitted is unique for each beacon, which provides identification of the transmitter through
computer access of registration files maintained by the National Oceanic and Atmospheric Administration or
other national authority*. Remember, SAR forces will know who you are and who to contact that might know of
your current situation only if your beacon has been properly registered. This will help expedite the launch of a
rescue operation.
NOTE: 406 MHz beacons are required to have their registration updated every two years.
*The national authority is the governmental body responsible for beacon registration database administration
for the country for which the beacon is programmed.
Once the 406 MHz signal is relayed through the LEOSAR and/or GEOSAR network, SAR forces determine
which SAR group is closest. This group proceeds to the beacon using the 121.5 MHz homing frequency.
6.2 Satellite Detection
Beacons transmit to the satellite portion of the Cospas- Sarsat system. Cospas- Sarsat is an international
system that utilizes Russian Federation and United States’ low altitude, near-polar orbiting satellites
(LEOSAR). These satellites assist in detecting and locating activated 406 MHz satellite beacons.
Cospas and Sarsat satellites receive distress signals from beacons transmitting on the frequency of 406 MHz.
The Cospas- Sarsat 406 MHz beacon signal consists of a transmission of non-modulated carriers followed by
a digital message format that provides identification data. The 406 MHz system uses Satellite-borne
equipment to measure and store the Doppler-shifted frequency along with the beacon’s digital data message
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and time of measurement. This information is transmitted in real time to an earth station called the Local User
Terminal (LUT), which may be within the view of the satellite, as well as being stored for later transmission to
other LUTs.
The LUT processes the Doppler-shifted signal from the LEOSAR and determines the location of the beacon,
then the LUT relays the position of the distress to a Mission Control Center (MCC) where the distress alert and
location information is immediately forwarded to an appropriate Rescue Coordination Center (RCC). The RCC
dispatches Search and Rescue (SAR) forces.
The addition of the GEOSAR satellite system greatly improves the reaction time for a SAR event. This satellite
system has no Doppler capabilities at 406 MHz, but will relay the distress alert to any of the LUT stations.
When there is GPS data included in the distress message, SAR authorities instantly know your location to
within 110 yards (100 m). This speeds up the reaction time by not having to wait for one of the LEOSAR
satellite to pass overhead. Because most of the search and rescue forces presently are not equipped to home
in on the 406 MHz Satellite beacon signal, homing must be accomplished at 121.5 MHz.
6.3 Global Positioning System (GPS)
The GPS system is a satellite group that enables a GPS receiver to
determine its exact position to within 30 m (100 ft.) anywhere on
earth. With a minimum of 24 GPS satellites orbiting the earth at an
altitude of approximately 11,000 miles they provide users with
accurate information on position, velocity, and time anywhere in the
world and in all weather conditions. The PLB350 stores this data
into its distress transmission allowing search and rescue forces to
narrow the search into a very small area and thus minimize the
resources required, dramatically increasing the effectiveness of the
overall operation.
Figure 6- Satellite Coverage Figure 7- GEOSAR Satellite Orbits
Figure
8
–
GPS
S
atellite
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SECTION 7 – TECHNICAL INFORMATION
7.1 Characteristics
The PLB350 series are battery operated Personal Locator Beacons. The beacon case, with its antenna, is
waterproof, while semiconductor circuits are mounted within the case assembly which also contains the
battery power supply. Keypads with “self test” and “ON” buttons are installed on the case, along with an
internal beeper and three LEDs. The beacon contains a GPS receiver that will acquire your LAT/LON located
under the bottom of the front case.
The PLB350 series meet the requirements of Federal Communications Commission (FCC) Part 95 Subpart K;
and European R&TTE Directive.
NOTE: FCC approval is pending. R&TTE approval is pending. CE mark is pending.
7.2 Applicable Documents
COSPAS- SARSAT C/S T.001 Specification for 406 MHz Distress Beacons
COSPAS- SARSAT C/S T.007 406 MHz Distress Beacon Type Approval Standard
ETSI 302 152-1 Technical Characteristics of 406 MHz Satellite PLBs
RTCM Paper 76-2002/SC110-STD RTCM Recommended Standards for 406 MHz Satellite PLBs
Industry Canada RSS-287 Radio Standards Specification for EPIRBs, ELTs and PLBs
Australia/New Zealand AS/NZS 4280.2 406 MHz Satellite Distress Beacons; Part 2: PLBs
NOTE: For all other type approval information, please visit our website at www.acrelectronics.com.
7.3 Specifications
406 MHz Transmitter
Frequency 406 MHz
Output Power 5 watts
Frequency Stability ±2 parts per billion/100ms
Digital Message:
Format
Long message Serialized
1*
Message protocol Standard Location
Duration 520 ms
Rate 400 bps
Encoding Biphase L
Modulation ±1.1 radians peak
1*
Beacons are shipped from ACR with a Serialized code but can be reprogrammed at a service center to
other coded formats including nationality of registration.
121.5 MHz Transmitter
Frequency: 121.5 MHz
Frequency Tolerance ±50 ppm
Output Power 25 mW PEP
Morse Code “P” ID Every 50 seconds (approximately) (U.S. Protocol)
Modulation
Type AM (3K20A3N)
Sweep Range 400 to 1200 Hz
Sweep Rate 3 Hz
Duty Cycle 37.5%
Morse P AM (2K00A2A) (U.S. Protocol)
STROBE
LIGHT
Light color Bright White
Flash rate 1 flash per 3 seconds
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Antenna
Frequency 406 & 121.500 MHz
Polarization Vertical
VSWR Less than 1.5:1
General/Environmental
Minimum Battery Operating Life +24 hours minimum @ -20°C to +55°C (-4°F to +131°F)
Battery Replacement Interval 5 years, after use in an emergency, or expired battery witness seal
*Batteries meet the UN Classification for Non-dangerous goods
Size of beacon less Antenna 1.25 x 5.81 x 2.31 in (3.71 x 14.75 x 5.8 cm)
Material High impact and UV resistant plastic
Color ACR-treuse™ (High Visibility Yellow)
Weight 9.8 oz (277 grams) w/o holster
Waterproof Factory Tested to 3.28 ft (1 m) for 1 hour and to 32.8 ft (10 m) for
10 minutes, both at room temperature
Buoyancy See “Summary of products” table, page 1
Temperature Range
Operating -20°C to +55°C (-4°F to +131°F)
Storage: -40°C to +70°C (-40°F to +158°F)
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APPENDIX
Photo of Beacon in the ON-GROUND Operating Configuration:
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Photo of Beacon in the Above GROUND Operating Configuration: