Manual

FCC ID: 2ASD630100722

Users Manual

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FCCID_4259906

BST1712-XT TPMS transmitter – FCC version
Product Manual

BST1712-XT - Tire pressure measure transmitter - Standard version




Product description

BST1712-XT is an extensor that, assembled on a standard tire valve, measures the air pressure of the tire,
temperature and battery voltage level and transmits these data through radio interface (434MHz license-free
ISM band), with proprietary Micro.sp© technology based on short pulses transmitted with Pulse Position
Modulation (PPM), which guarantees high RF peak power, as required for radio link reliability, but with a very
low average power and consequently low current consumption.

Powered by a standard CR1225 lithium battery, it can guarantee a lifetime of at least 3 years.



Technical specifications

Pressure Range (1)                                      0 – 12 bar (1200 kPa)
Overpressure (1)                                        20 bar (1 minute)
Operating Temperature                                   -40 +80 °C
Storage Temperature                                     -40 +85 °C
Measurement Sampling And TX Period Time                 12 seconds (Typ.)
Battery type                                            CR1225 (48mAh)
Expected Life                                           OPERATING MODE: 3 years
EXPECTED LIFE REDUCTION IN “0 Bar SLEEP
                                                        20% less/OP-MODE/Year
MODE “
Note 1: Relative Pressure .




                                                                                                  Ste Industries
                                                                        Via privata Oslavia 17/8D – 20134 Milano
                                                                www.ste-industries.com – info@ste-industries.com


Radio Frequency specifications

Compliant to FCC part 15.231.

                                                                            Specification
                Parameter                       Conditions                                                  Unit
                                                                     Min        Typ          Max
Frequency                                         20 °c                        434,4               MHz
Frequency Error (1)                            -40 +80 °C      434,25                  434,5       MHz
MODULATION BANDWIDTH (-20 dBc ) (2)           -20 ÷ +60 °c      434,0                  434,7       MHz
Field strength at 3m (3)                      -40 ÷ +80 °c       60           65         70       dBuV/m
MODULATION BANDWIDTH ( -6 dBc )                                              300                    kHz
Spurious Emission                            RBW=100kHz                                 -40        dBm
Duty Cycle                                                                  0,25%
Transmission Period Time                      -40 ÷ +80 °c       11s         12s
Note 1: Measured as the midpoint of the emission spectrum bandwidth.
Note 2: Frequency of the -20dBc ( dB under the erp peak power) points of the emission spectrum
measured under the extreme test conditions (temperature and source voltage).
Note 3: Radiated power measured with the EUT on a test-fixture simulating the ground plane reference.




Measurement Performance Specifications

Pressure measurement

The reported performance reflects the use of a 10 bit measurement. The BST1712-XX transmits the
pressure measurement calibrated at the first calibration point ( 9 bar ) plus the second point ( 4 bar)
calibration error.

Computation and temperature compensation to obtain the reported performance are performed on the
receiver side.

                                                                       SPECIFICATION
           PARAMETER                     TEMPERATURE                                                      UNIT
                                                                 MIN.      TYP.      MAX
Pressure Range (1)                          -40 ÷ +80 °c         100                 1200                 kPa (2)
Measurement Resolution                      -40 ÷ +80 °c         ± 4,3     ± 2,3                           kPa
Measurement Error
   1) 3 bar to 10 bar                       -20 ÷ +60 °c                       ±10                         kPa
   2) 1 bar to 12 bar                       -20 ÷ +60 °c                                    ±20            kPa
   3) 1 bar to 12 bar                       -40 ÷ +80 °c                                    ±30            kPa
Note 1: Relative Pressure
Note 2: 100 kilopascal (kPa) = 1 bar




                                                                                                   Ste Industries
                                                                         Via privata Oslavia 17/8D – 20134 Milano
                                                                 www.ste-industries.com – info@ste-industries.com


Temperature measurement

The reported performance reflects the use of a 10 bit measurement (25 °C calibrated) and a 8 bit resolution
transmitted message.


         PARAMETER                           MIN                      TYP                     MAX

      Temperature Range                    -40 °C                                            +80 °C
      Measurement Error
        1) -20 to +60 °C                                              ±2°C                    ±3°C
         2) -40 to -20 °C                                             ±3°C                    ±4°C
        3) +60 to +80 °C                                              ±3°C                    ±4°C



Battery voltage measurement

A 10 bit measure of battery voltage is transmitted with 2 bits as reported in the table below.

      11                       Battery Voltage ≥ 2,9 V
      10                   2,5 V ≤ Battery Voltage < 2,9 V
      01                    2 V ≤ Battery Voltage < 2,5 V
      00                        Battery Voltage < 2 V

       MEASUREMENT ERROR (-40 to +80 °C) ± 0,1 V




Mechanical Specifications

DIMENSIONS (without plastic cap)                    40 x 23 x 20,5mm

WEIGHT                                                       30g




                                                                                                     Ste Industries
                                                                           Via privata Oslavia 17/8D – 20134 Milano
                                                                   www.ste-industries.com – info@ste-industries.com


Mechanical Drawing

Plastic Antenna Cover




Helical antenna




                                                          Ste Industries
                                Via privata Oslavia 17/8D – 20134 Milano
                        www.ste-industries.com – info@ste-industries.com


Compliance Information

                        HVIN: 30100722

                        FCC ID: 2ASD630100722

                        IC: 24732-30100722


FCC Interference Statement (Part 15.105 (b))

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
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
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one 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.


FCC Part 15 Clause 15.21

Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.


FCC Part 15.19(a)

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference
(2) This device must accept any interference received, including interference that may cause undesired
operation.


ISED RSS-Gen Notice

This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two
conditions:
(1) This device may not cause interference
(2) This device must accept any interference, including interference that may cause undesired operation of
the device.

 Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de
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.




                                                                                                   Ste Industries
                                                                         Via privata Oslavia 17/8D – 20134 Milano
                                                                 www.ste-industries.com – info@ste-industries.com



Document Created: 2019-04-02 09:04:57
Document Modified: 2019-04-02 09:04:57

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