ACR Electronics ENGLISH User Manual

PRODUCT
SUPPORT
406 PLB
MANUAL
Y1-03-0169
Product No. 2792
GyPSI 406 PLB
(with GPS Interface)
Product No. 2793
Model PLB-100
Personal Locator Beacon
ACR Electronics, Inc.
5757 Ravenswood Road
Fort Lauderdale, Fl 33312
+1(954) 981-3333 Fax +1 (954) 983-5087
www.acrelectronics.com
Email: PLBInfo@acrelectronics.com
A Chelton Group company
* * * WARNING * * *
THIS TRANSMITTER IS AUTHORIZED FOR USE ONLY
DURING SITUATIONS OF GRAVE AND IMMINENT DANGER
DELIBERATE MISUSE MAY RESULT IN A SEVERE PENALTY
Advice to owners of Personal Locator Beacons (PLBs)
Registration of 406 MHz satellite PLB with the PLB Registration Section of the national authority* is mandatory
because of the global alerting nature of the system.
The information provided on the Registration Form is used only for rescue purposes and will greatly assist in any beacon alarm incident.
Fill in the owner registration form immediately upon completion of the sales transaction. Mail the Registration Form immediately.
If the beacon is to enter service immediately, complete the Registration Form and fax the information to the
national authority. The original card must still be mailed to the national authority* for hard-copy reference and
filing.
If the current owner is transferring the beacon to a new owner, the current owner is required to inform the national authority* by letter, facsimile or telephone, of the name and address of the new owner.
The subsequent owner of the beacon is required to provide the national authority* with the information as shown
on the owner Registration Form. Additional Registration Forms may be obtained by contacting ACR or the appropriate national authority.
THIS OBLIGATION TRANSFERS TO ALL SUBSEQUENT OWNERS.
*National Authority The term “national authority” appears throughout this manual. Wherever these words appear, reference is made to
the government body responsible for PLB registration for the country in which the for various national authorities can be found on the Registration Card.
The National authority in the United States is the national oceanic and atmospheric administration.
The address is:
SARSAT Beacon Registration
NOAA/NESDIS
E/SP3, Rm 3320, FB-4
5200 Auth Road
Suitland, Md 20746-4304
www.sarsat.noaa.gov
Tel No. (301) 457-5430
Fax No. (301) 568-8649
The national authority in Canada is the NSS (National Search & Rescue Secretariat)
Canadian personal emergency beacon registry.
The NSS Telephone Number is:
(613) 996-1504 (800) 727-9414
unit is registered. The addresses
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TABLE OF CONTENTS
SECTION 1 - THE SYSTEM
1.1 General .................................................................................................................................. 1
1.2 Purpose.................................................................................................................................. 1
1.3 Satellite Detection ................................................................................................................. 2
1.4 Authorizations....................................................................................................................... 4
1.5 Characteristics....................................................................................................................... 4
1.6 Technical Data ...................................................................................................................... 4
1.6.1 Applicable Documents.......................................................................................................... 4
1.6.2 Specifications ........................................................................................................................ 4
SECTION 2 - OPERATION
2.1 General .................................................................................................................................. 10
2.2 GyPSI™ 406 PLB Operating Instructions............................................................................ 10
2.2.1 Activation.............................................................................................................................. 10
2.2.2 Deactivation .......................................................................................................................... 10
2.2.3 Self Test ................................................................................................................................ 10
SECTION 3 - EXTERNAL GPS I/R ADAPTER
3.1 General .................................................................................................................................. 12
3.2 GPS Adapter ......................................................................................................................... 12
3.2.1 Connecting ............................................................................................................................ 12
3.2.2 Setup...................................................................................................................................... 13
3.2.3 Testing................................................................................................................................... 13
3.2.4 Position data set to default .................................................................................................... 14
4.0 MAINTENANCE................................................................................................................ 14
5.0 FREQUENTLY ASKED QUESTIONS............................................................................ 14
6.0 REGISTRATION................................................................................................................ 16
7.0 FALSE ALARMS ............................................................................................................... 16
Figure 1 - GEOSAR Satellite Coverage............................................................................................3
Figure 2 - SAR Satellite Coverage.................................................................................................... 3
Figure 3 - PLB Block Diagram......................................................................................................... 5
Figure 4 - Known Compatible GPS Receiver's................................................................................. 6-9
Figure 5 - Self test............................................................................................................................. 11
Figure 6 - Operating Position........................................................................................................... 12
Figure 7 - GPS Adapter Illustration ................................................................................................. 13
Figure 8 - External GPS I/R Cable................................................................................................... 14
Figure 9 - Basic Concept of the (COSPAS-SARSAT) System........................................................... 17
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SECTION 1 - THE SYSTEM
1.1 GENERAL
1.1.1 This manual provides operation and maintenance instructions for the 406 Personal Locator Beacon, Product No. 2792 and the GyPSI™ 406 Personal Locator Beacon, Product No. 2793
hereinafter referred to as the PLB. This section describes the characteristics and details of the 406
PLB and GyPSI™ 406 PLB Systems.
1.2 PURPOSE
1.2.1 The PLB provides distress alerting via radio transmission on 406 MHz to satellites of the COSPAS-SARSAT network. The GyPSI™ PLB can also transmit a distress alert to the
GEOSAR network that includes GPS latitude and longitude coordinates that are inputted through an I/R Interface that connects to the data output of a GPS Receiver.
1.2.2 The message transmitted by the PLB is unique for each beacon, which provides identification of
the transmitter through computer access of registration files maintained by the National Search
and Rescue Secretariat or other national authority. It is the user's responsibility to fill out and
mail the enclosed registration form to the appropriate agency of the country under which the PLB is registered. The PLB is programmed by ACR during manufacture and can be
reprogrammed by an ACR authorized programming facility for the registered country.
Remember, if your PLB is not registered, SAR Authorities do not know who you are, where you
live or where to contact anyone who might know anything about your situation.
1.2.3 Once Search and Rescue (SAR) forces are alerted by the PLB signal (406 MHz), relayed through
the COSPAS-SARSAT and/or GEOSAR network, they can converge on the position estimated by
the satellite. When GyPSI™ PLB GPS interface is used SAR authorities can know your precise location and speed up reaction time. Intermediate and short range location is aided by the PLB
with its on board radio beacon homing signal transmitter (121.5 MHz).
1.2.4 Power is provided by a self contained long life battery pack with a recommended 5 year
replacement cycle. See Factory Authorized Service Center for replacement (Section 4.0 –
Maintenance).
1.2.5 Self test (Section 2.5) is initiated by momentarily moving the switch to the test position then release. During self test, an actual satellite message is transmitted while certain key performance parameters are measured and recorded. The self test message is modified such that the satellite will not forward an alert message during self test. The LED will flash 3 times amber before
turning green. During this time the unit will also beep 3 times to indicate correct test status. In the GyPSI™ PLB model, approximately 2 seconds after self test the unit will beep and amber
LED will flash to indicate if the unit has GPS data.
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1.3 SATELLITE DETECTION
1.3.1 The 406 PLB and GyPSI™ 406 PLB transmit an encoded phase modulated radio signal to the
satellite portion of the COSPAS-SARSAT System. The system was developed and implemented by the COSPAS-SARSAT Partners (Russian Federation, Canada, France and the United States).
1.3.2 COSPAS-SARSAT is an international system that uses Russian Federation and United States low altitude, near-polar orbiting satellites that assist in detecting and locating activated 406 MHz Satellite beacons. The Russian Federation provides aboard COSMOS navigation spacecraft COSPAS payloads that are inter-operable with the SARSAT System. In addition to weather and environmental sensors, SARSAT payloads, provided by Canada and France, are carried aboard the United States National Oceanic and Atmospheric Administration’s (NOAA’s) Advanced TIROS environmental satellites.
1.3.3 COSPAS and SARSAT satellites receive distress signals from the 406 PLB and GyPSI™ 406 PLB transmitting on the frequency of 406.028 MHz. The COSPAS-SARSAT 406 MHz satellite
signal consists of a transmission of non-modulated carrier followed by a digital message format that provides identification data. The 406 MHz system uses spacecraft-borne equipment to measure and store the Doppler-shifted frequency data along with the satellite digital data message including GPS data, 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. In the real-time mode, the signal detection is limited to a mutual satellite-LUT circular visibility area of about 2500 km radius that moves with the satellite along its track. However, because of the stored-mode capability at 406
MHz, the need for this mutual PLB-satellite-LUT visibility is not essential, and the system is fully
functional in just the global mode.
1.3.4 The LUT processes the Doppler-shifted signal and determines the location of the PLB; then the
LUT relays the position of the distress signal to a Mission Control Center (MCC) where the distress alert and GPS location information is immediately forwarded to an appropriate Rescue Coordination Center (RCC). The RCC dispatches Search and Rescue (SAR) forces.
.
1.3.5 The COSPAS-SARSAT System includes 38 LEOSAR LUT Stations, 9 GEOSAR LUT stations and 24 Mission Control Centers that provide real-time as well as global-mode coverage for the northern hemisphere, while the southern hemisphere is presently served primarily by the global­mode. Additional LUTs and MCCs are planned for installation in the near future both in the northern and southern hemispheres.
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 this will instantly tell SAR authorities where you are located, hence by not having to await the transit of the next LEOSAR satellite.
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GEOSAR SATELLITE COVERAGE
FIGURE 1
SAR SATELLITE ORBITS
FIGURE 2
1.3.6 Because most of the search and rescue forces presently are not equipped to home on the 406 MHz Satellite signal, homing must be accomplished at 121.5 MHz.
1.3.7 The 406 PLB and GyPSI™ 406 PLB are Class 1, Personal Locator Beacons.
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1.4 AUTHORIZATIONS
1.4.1 The 406 PLB and GyPSIPLB meets the requirements of FCC Part 95 Subpart K.
The 406 PLB and GyPSI™ 406 PLB
meets the requirements of and Canadian Specifications,
NSS PLB 01-01 & RSS 187 and Cospas/Sarsat T.001 & T.007.
1.5 CHARACTERISTICS
1.5.1 The 406 PLB and GyPSI™ 406 PLB are buoyant, battery operated Personal Locator Beacons.
The beacon case, with its external antenna, is waterproof. The semiconductor circuits are mounted within the case assembly that also contains the battery power supply. An “On/Off” switch is installed on top of the beacon, along with an internal beeper. The GyPSI model accepts external
GPS data via an I/R interface cable that is included with your PLB.
1.6 TECHNICAL DATA
1.6.1 Applicable Documents
NSS PLB01-01 Standard for 406 MHz Satellite PLB's, Canada
COSPAS-SARSAT Document C/S T.001 & T.007 (spec for 406 MHz distress beacons)
RSS 187 Radio Standards Specification for Emergency Position Indicating
Radio Beacons, Emergency Locator Transmitter, and Personal Locator Beacon
FCC Part 95, Subpart K
1.6.2 Specifications
406 MHz Transmitter
Frequency 406.028 MHz Frequency Stability ±2 parts per billion/100ms Output Power 5 watts Digital Message Format Long message / serialized Message protocol Standard Location (2792 - 2793)
Duration 520 ms Rate 400 bps Encoding Biphase L Modulation ±1.1 radians peak
PLB's leave ACR with Serialized code but can be reprogrammed at a service center to other coded
formats including nationality of registration.
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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)
Modulation Type AM (3K20A3N) Sweep Range 400 to 1200 Hz Sweep Rate 3 Hz Duty Cycle 37.5% Morse P AM (2K00A2A)
Antenna Frequency 406 & 121.500 MHz Polarization Vertical VSWR Less than 1.5/1
General/Environmental
Battery Life Operating 24 hours minimum @ -40°C Replacement Interval 5 years or after use in an emergency
Size PLB less Antenna 6.65 x 3.55 inches
Material High impact and UV resistant plastic Color High Visibility Yellow
Weight 514 grams
Temperature Range Operating Class I -40°C to +55°C
USER /
MCP
406 / 121.5 MHz
AMPLIFIER
PROGRAMMING
INTERFACE
RF
PLB BLOCK DIAGRAM
FIGURE 3
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KNOWN COMPATIBLE GPS RECEIVERS
(for the GyPSI PLB Model only)

Manufacturer Model Notes Y2K and EOW Compliant

B&G Network LCD Plotter / DGPS B&G Network LCD Plotter / GPS B&G Network GPS and DGPS
B&G Network GPS Data Marine Chartlink D7000 XT Data Marine Chartlink D7000 XTC Data Marine Chartlink II D8000 Data Marine Link D3500
Data Marine Link D3500 LD
Furuno GP1810F Furuno GP1810 Furuno GP1610C Furuno GP1600F Furuno GP1600 Furuno GP30 Furuno GP35 Garmin Etrex Garmin 10 Garmin 12 Garmin 20 Garmin 25 Garmin 30 Garmin 31 Garmin 35 Garmin 36 Garmin 38 Garmin 40 Garmin 45 Garmin 48 Garmin 50 Garmin 75
* * * *
* * * *
* * * * * * * * * * * * * * * * * * * * * * *
Yes Yes Yes Yes
Yes Yes Yes Yes
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
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Manufacturer

Garmin 85 Garmin 89 Garmin 90 Garmin 92 Garmin 95 Garmin 120 Garmin 126 Garmin 128 Garmin 130 Garmin 135 Garmin 175 Garmin 180 Garmin 185 Garmin 190 Garmin 195 Garmin 210 Garmin GPSMAP 215 Garmin 220 Garmin GPSMAP 225 Garmin GPSMAP 230 Garmin GPSMAP 235 SOUNDER
Model Notes

Y2K and EOW Compliant

* * * * * * * * * * * * * * * * * * * * *
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Garmin 120XL Garmin 12XL Garmin 45XL Garmin 55AVD Garmin 95XL Garmin GPS II Garmin GPS II+
Garmin GPS III Lowrance GlobalMap 12 Lowrance GlobalMap 1600 Lowrance GlobalMap Sport Some older versions of
software may not output
Lowrance LMS-160
* * * * * * * * * *
GGA, contact Manufacturer
*
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Yes
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Manufacturer Model Notes Y2K and EOW Compliant

Magellan GPS 2000 XL Magellan GPS 3000 Magellan GPS 3000 XL Magellan GPS 4000 Magellan GPS 4000XL Magellan Meridian XL Magellan Trailblazer Magellan Trailblazer XL
Magellan White Meridian NorthStar 941X NorthStar 951X NorthStar 961X Raytheon Autohelm ST50 Plus GPS
Raytheon GPS-11 Raytheon HSB Chart Plotter Raytheon NavCenter 600 * Unit will display wrong time
Raytheon Raychart 620 * Unit will display wrong time
Raytheon RC-520 * Yes Raytheon RL-70RC * Yes
Si-Tex DGPS-11 * Yes Si-Tex GPS-1 * Yes Si-Tex GPS-10 * Yes Si-Tex GPS-10A * Yes Si-Tex GPS-4A * Yes Si-Tex GPS-5 * Yes Si-Tex GPS-6 * Yes Si-Tex GPS-7 * Yes Si-Tex GPS-77P * Yes Si-Tex GPS-8 * Yes Si-Tex GPS-88P * Yes
* * * * * * * * * * * * *
* *
and date after Y2K. Send
unit to manufacturer for
and date after Y2K. Send
unit to manufacturer for
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Yes Yes
upgrade
upgrade
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Manufacturer

Si-Tex GPS-9 * Yes Si-Tex GPS-99P * Yes Si-Tex GPS-9D * Yes Si-Tex HG-7 * Yes Si-Tex SBR-90 * Yes Si-Tex SBR-91 * Yes
Trimble 4000DSi * Firmware must be upgraded
Trimble 4000RSi * Users of Firmware V7.15 -
Trimble 7400MSi * Yes Trimble MS750 * Yes Trimble Navgraphic XL * N/A - No Date Output Trimble NavMariner DGPS * Yes Trimble NavTrac GPS * Version 2.09 is compliant.
Trimble NT200 * Yes Trimble NT200D * Yes Trimble NT300D * Yes Trimble DSM * Yes for versions 1.10 and
Trimble NT100 * Yes

Model Notes

Y2K and EOW Compliant

to V7.19 to comply
V7.18 must upgrade to
V7.19. Users of V7.28 must
upgrade to V7.29. Users of
V7.29 are fully compliant
Earlier versions are not being
tested
later
GPS units compatible with ACR Beacons based on vendor information
(*) indicates that unit complies with ACR requirements
KNOWN COMPATIBLE GPS RECEIVERS
FIGURE 4
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SECTION 2 - OPERATION

2.1 GENERAL
2.1.1 The 406 PLB and GyPSI™ 406 PLB Beacon Models are designed to be manually deployed and
activated.
2.1.2 The GyPSI™ 406 PLB Beacon can accept NMEA 0183 GPS Data (format GGA 1.5 and above)
through it's I/R interface. Data is updated every 20 minutes once an initial position is acquired.
2.1.3 The GyPSI™ 406 PLB is also designed to allow the user to perform periodic testing and
confirmation of GPS connection and downloaded coordinates.
2.1.4 The GyPSI™ 406 PLB checks for a valid GPS interface connector approximately every 2 seconds
if no current valid data exists.
2.1.5 The GyPSI™ 406 PLB can be forced to update its GPS data by initiating the self test function.
2.1.6 The GyPSI™ 406 PLB will hold the last GPS coordinates in memory until unit is activated. After
deactivating unit, GPS data is returned to default.
2.2 406 PLB AND GyPSI™ 406 PLB OPERATING INSTRUCTIONS
2.2.1 Activation
Unfold Antenna from around unit and move Antenna to a vertical position (See Figure 6) Lift
Switch to "ON" position by lifting up and sliding to the right then down to "ON" to activate the
PLB. "ON" position indicated by " ▌" on the face of the switch. Your PLB comes with a
Breakaway tab on the "ON" Position to keep from accidental turn-on. PUSH SWITCH down to break TAB. Unit will beep and the RED LED will begin to flash once approximately every 20 seconds. Unit will send Rescue message approx. every 50 seconds and will beep after the message
has been sent. Keep the PLB with you at all times.
2.2.2 Deactivation
The PLB can be deactivated by turning the switch to "OFF" position.
If the beacon continues to operate after it has been deactivated, remove the two screws at the
bottom of the unit, and unplug the battery to disable the unit. Return it to a service center for repair.
2.2.3 Self Test
The PLB self test is initiated by lifting the switch at the top of the unit to a vertical position
momentarily and releasing it back to the "OFF" position. Switch is spring loaded to return to the "OFF" position.
Note: "Off" position indicated by an "O" on switch face "ON" by " ", on the face of the switch.
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Upon lifting the switch, a very short yellow flash will indicate self test has been initiated.
Sequence of Tests
1. Check Data I/O ....................................... Beep & flash amber LED if pass
................................................................. Stop if failed
2. Check 406 MHz Synthesizer
................................................................. Beep & flash amber LED if pass
................................................................. Stop if failed
3. Check RF Power/Battery ........................ Beep & flash amber LED if pass
................................................................. Stop if failed
4. Unit turns on green LED to indicate Successful Test.
5. On the GyPSI 406 PLB approximately 2 seconds after green LED flash, unit will flash
amber LED and beep if valid external GPS data has been received.
A successful test result is indicated by three beeps, three yellow flashes then the green LED
flashes. If GPS data has been loaded into the PLB, an additional yellow flash & beep will occur after the green LED flashes.
NOTE: The homing beacon at 121.5 MHz is inhibited during self test.
It is strongly recommended to test the PLB
on a quarterly basis.
SELF TEST
FIGURE 5
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OPERATING POSITION
FIGURE 6
SECTION 3 - GYPSI 406 PLB EXTERNAL GPS I/R ADAPTER
3.1 GENERAL
The GyPSI™ 406 PLB comes with a GPS cable Plug Adapter that can be interfaced to your GPS
receiver to input actual GPS data into your beacon. This extra data can help improve reaction time to your position in the event of an emergency. This data is particularly helpful when the GEOSAR Satellite system picks up the Distress Alert.
3.2 GPS ADAPTER
3.2.1 Connecting:
Your External GPS I/R cable attaches to your PLB and the GPS receiver, forming a data transfer
link (like a printer cable). The cable plugs into the top of the unit, into the socket labeled GPS. The other end has two wires that should be connected to the GPS Receiver’s Data/Power Cable. Consult your GPS Manual for wire identification for connections.
The Data/Power cable for your GPS receiver typically has connections for an external power source and data output.
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The External GPS adapter supplied with your GyPSI 406 PLB has two wires that are polarized.
The wire with the stripe on it is the + Data lead and should be connected to the + Data lead of your GPS Data/Power connector. The other lead with no stripe is the - Data lead and should be connected to the - Data lead of your GPS Data/Power Cable.
3.2.2 Setup:
The Data format your PLB will be accepting is the NMEA 0183, (GGA sentence). This is a
common standard for GPS receivers. Your GPS receiver needs to be set to this protocol for proper data transfer. See Figure 4 for known compatible GPS receivers. Consult your GPS manual for proper format setting.
3.2.3 Testing:
Plug the Adapter into the top of the PLB into the socket labeled GPS.
Ensure your GPS has acquired a valid position. Momentarily lift the "ON/OFF" switch to the test
position and stand-by. The PLB will go through its self test routine and approx. 2 seconds after the
green LED the unit will beep once and Yellow LED will flash to indicate that valid GPS data has
been transferred into your PLB.
When connected to a GPS receiver, your PLB will automatically update your position, even when
in the "OFF" mode every 20 minutes.
When you activate the self test check, your PLB will start to look for valid GPS data and update
accordingly.
Once data has been loaded into your PLB it will remain there until the unit is activated to the
"ON" mode.
GPS ADAPER ILLUSTRATION
FIGURE 7
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EXTERNAL GPS I/R CABLE

FIGURE 8
3.2.4 Position data set to default:
GPS data will be set back to default once the beacon is turned OFF. During the self test burst,
default GPS data is transmitted even if GPS data is in memory.
4.0 MAINTENANCE
4.1 Carefully inspect the PLB case for any visible cracks. Cracks may admit moisture which could
falsely activate the beacon or otherwise cause a malfunction. Any cracking observed should immediately be referred to ACR or nearest distributor for evaluation, (1-800-432-0227 Ext. 169)
toll free in the USA.
4.2 The battery must be replaced by the date indicated on the beacon. At each inspection, check the time remaining until replacement is required.
NOTE: There are no user serviceable items inside the PLB. DO NOT OPEN THE PLB UNLESS
TO DISABLE IN CASE OF FAULTY ACTIVATION. Refer all long life battery replacement and other internal PLB service to a factory authorized service center. For the nearest location of a
factory authorized service center, call 1-800-432-0227 Ext. 169 (toll free in the USA) or +1 (954)
981-3333, Ext. 169.
It is strongly recommended to test the PLB
on a quarterly basis.
5.0 FREQUENTLY ASKED QUESTIONS Q. How do I download position data from my GPS to my beacon?
A. You must have
NMEA 0183 output ready GPS unit and a GPS interface cable. The NMEA
0183 optical interface connector supplied with your ACR beacon must be connected to the
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GPS interface cable using the wiring diagram information supplied by ACR and the GPS unit manufacturer. Turn on your GPS unit and allow it to acquire the necessary satellites. Make sure the output is set to NMEA 0183 with the GGA sentence configured if necessary. Connect the NMEA 0183 interface cable to the GPS unit and the ACR beacon. The ACR beacon “wakes up” every few seconds. As soon as it detects the presence of a valid data source it will initiate a data down load.
Q. How long does it take to down load position coordinates from my GPS to my beacon?
A. Upon connection with a properly operating and fully acquired GPS unit, the ACR beacon
will take less than four minutes to synchronize and download coordinates. Subsequent coordinate updates occur every 20 minutes. These subsequent position updates will take from a few seconds to no more than 20 seconds to complete. If the interface cable is disconnected you may need to wait for up to four minutes for the GPS and the beacon data interchange to synchronize again.

Q. How does the GPS data get from my GPS to the beacon?

A. The GPS unit transmits data as electrical energy through the GPS interface cable to the
ACR optical interfacing connector. The ACR optical interfacing connector has an infrared LED and sensor located in it. The electrical energy supplied by the GPS unit is converted to infrared light in the ACR optical interfacing plug. Data from the GPS unit is transmitted via infrared light to the beacon through the translucent beacon top cap or lens when the ACR optical interface plug is properly engaged. The beacon has an infrared detector that decodes the light pulses. ACR uses an optical interface design to eliminate the potential for leaks and corrosion common to mechanically interfacing devices.
Q. How can I test my beacon to see if it has acquired GPS data?
A. Lift the switch to the test position, making sure not to break the tab. If the beacon has
acquired GPS data there will be a beep and LED flash within 4 seconds after the self-test has completed.
Q. Does my GPS unit have to be set up in a special way to transmit position coordinates
via the NMEA 0183 interface?
A. For the GPS to transmit data make sure the NMEA 0183 output is turned on and the GGA
NMEA sentence is selected or turned on. Consult your GPS user’s manual for information on configuring the NMEA output.
Q. Does my beacon need any special set up to accept GPS data?
A. You do not have to do anything special to the beacon. If it is hooked to a valid data
source, that has been properly set up to deliver NMEA format with the GGA sentence, it will automatically attempt to download the data and form an emergency message that includes the position data.

Q. What is the maximum length my GPS cable can be?

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A. ACR Electronics recommends a maximum length of 400 feet using 24 AWG wire. Contact
your GPS owner’s manual for more detailed information.
Q. What happens if I plug the GPS into the beacon first, without waiting for it to acquire
satellites?
A. The beacon will function normally, but will not store GPS coordinates. The beacon will
continue to look for satellites and as soon as the GPS has acquired satellites the data will be transferred to the beacon.
Q. How long does the beacon hold data in memory?
A. The beacon retains GPS data until one of the following conditions happens:
1. The battery is disconnected.
2. The beacon is placed in the on mode and then returned to the off position.
Q. How much power is needed to run the IR LED on the GPS cable?
A. The minimum power needed is 3.3V
and 2mA.
DC
Q. What if I already have other devices hooked up to my NMEA 0183 output cable, can I
still splice my PLB GPS cable to the NMEA 0183 output cable?
A. YES – As long as you have enough current to supply 2mA to the beacon. Most GPS are
capable of supporting multiple devices on the NMEA interface.
6.0 REGISTRATION
6.1 It is mandatory that this PLB be registered with National Authorization in your country. The 406 PLB and GyPSI 406 PLB have been programmed with a unique identification number or code
which is broadcast on 406 MHz. Registration with the appropriate national authority provides the Search and Rescue Authority with important information which will speed up the rescue operation and minimize false alarms.
6.2 To register this PLB, simply fill out and mail the provided form in the enclosed pre-addressed
envelope.
7.0 FALSE ALARMS
7.1 Should there be, an inadvertent activation or false alarm, it must be reported to the nearest search
and rescue authorities. The information that should be reported includes the satellite PLB
Unique Identifier Number (UIN); date, time, duration, and cause of activation; and the location at the time of activation. Information is located on the back label.
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7.2 Contact the appropriate national authority to report false alarms.
In the United States: Atlantic Ocean / Gulf of Mexico USCG Atlantic Area Command (757) 398-6390
Pacific Ocean USCG Pacific Area Command (510) 437-3700
USCG Headquarter Command Center (800) 327-7233
In Canada: NSS - (613) 992-6667
***WARNING***
THIS TRANSMITTER IS AUTHORIZED FOR USE
ONLY DURING SITUATIONS OF GRAVE
AND IMMINENT DANGER, WHEN ALL OTHER
MEANS OF SELF RESCUE HAVE BEEN EXHAUSTED

BASIC CONCEPT OF THE COSPAS-SARSAT SYSTEM

FIGURE 8
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