Schrader AG2SM3 User manual

Schrader Electronics Ltd
Unit 11 Technology Park
Belfast Road
Antrim, Northern Ireland, BT41 1QS
United Kingdom
Tyre Pressure Monitoring Sensor
Model: AG2SM3
Product Specification / User Manual
TheTPMSTransmitterisinstalledtothevalvestemineachtyreofa vehicle.The unitmeasurestyre
pressure periodically and transmits this information by RFcommunication to a receiver inside the vehicle.
In addition, the TPMS Transmitter performs the following functions:
Determines a temperature compensated pressure value.
Determines any abnormal pressure variations in the wheel.
 Monitors the state of the Transmitters’ internal battery and informs the receiver of a low battery
condition.
Modulation
During the Rotating Mode, The modulation used for the sensor is FSK (Amplitude -Shift Keying)
with 50% Manchester bi-phase encoding.

Schrader Electronics Ltd
Unit 11 Technology Park
Belfast Road
Antrim, Northern Ireland, BT41 1QS
United Kingdom
Modes of Operation
Rotating Mode
Whilethesensor/transmitterintheRotatingMode,itshallsatisfythefollowingrequirements.The
sensor/transmittershalltransmitaninstantaneousmeasureddata,asdefinedinSection3.1ofthis
document, if a pressure change of 2.0 psi from the last transmission or greater has occurred with respect
to the following conditions. If the pressure change was a decrease of pressure, the sensor/transmitter
shall transmit immediately every time it detects the 2.0-psi or greater pressure changes from the last
transmission.
Ifthepressurechangeof2.0psiorgreaterwasanincreaseofpressure,thesensorshallnotreacttoit.
Stationary Mode
While the sensor/transmitter in the Stationary Mode, it shall satisfy the following requirements. The
sensor/transmitter shall transmit an instantaneous measured data, if a pressure change of 2.0 psi from
the last transmission or greater has occurred with respect to the following conditions. If the pressure
change was a decrease of pressure, the sensor/transmitter shall transmit immediately every time it
detects the 2.0-psi or greater pressure changes from the last transmission.
If the pressure change of 2.0 psi or greater was an increase of pressure, the silent period between the
RPC transmission and the
last transmission shall be 30.0 seconds, and the silent period between the RPC transmission and the next
transmission (Normal scheduled transmission or another RPC transmission) shall also be 30.0 seconds, to
be in compliance of FCC Part 15.231.
Factory Mode
The factory mode is the mode that the sensor shall transmit more often in the factory to assure the
programmability of the sensor ID during the manufacturing process.
Off Mode
This Off Mode is only for production parts sensors that are used for the builds during the production
process and not in the service environment.
LF Initiation
The sensor/transmitter must provide data upon the presence of an LF signal. The sensor must react
(Transmit and provide data) no later than 150.0 ms after the LF data code has been detected at the
sensor. The sensor/transmitter must be sensitive (As sensitivity is defined in Table 1) and able to
detect the LF field.

Schrader Electronics Ltd
Unit 11 Technology Park
Belfast Road
Antrim, Northern Ireland, BT41 1QS
United Kingdom
FCC:
FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part15 oftheFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainstharmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radiocommunications.However,thereisnoguaranteethatinterferencewillnotoccurinaparticular
installation.Ifthis equipment does cause harmful interference toradio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try tocorrect the interference by
one or more of the following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/ TV technician for help.
CAUTION:
Any changes or modifications not expressly approved by the grantee of this device could void the user's
authority to operate the equipment.
ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwoconditions:
(1) this device may not cause harmful interference, and
(2) this devicemustaccept anyinterferencereceived,includinginterferencethatmay causeundesired
operation.

Schrader Electronics Ltd
Unit 11 Technology Park
Belfast Road
Antrim, Northern Ireland, BT41 1QS
United Kingdom
h tt p :/ / www .t pm s e u r o s hop . c om / do c um e n t s / d e cl a r at i on _ c onfo r m i t i e s
ISED:
Canada, Innovation, Science and Economic Development Canada (ISED) Notices
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and
Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two
conditions:
(1) This device may not cause interference.
(2) Thisdevice mustacceptany interference, includinginterference thatmay causeundesiredoperation
of thedevice.
Avis du Canada, Innovation, Sciences et Développement économique Canada (ISED)
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR
d’Innovation,SciencesetDéveloppement économiqueCanadaapplicablesauxappareilsradio exemptsde
licence. L’exploitation est autorisée aux deux conditions suivantes :
(1) L’appareil ne doit pas produire de brouillage;
(2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d’en compromettre le fonctionnement.