Test Report

FCC ID: LSQ-TRXS-830

Test Report

Download: PDF
FCCID_949124

Test Report No. 8812315253


For ElmoTech Ltd.

Equipment Under Test:

Ankle transceiver
Model: TRXS830
FCC ID: LSQ-TRXS-830




From The Standards Institution
Of Israel
Industry Division
Electronics & Telematics Laboratory
EMC Section




                                Certificate No. 1487-01


  Test Report No.: 8812315253                                              Page 1 of 23 pages
  Title: Test on Ankle transceiver          FCC ID: LCQ-TRXS-830                   Model: TRXS830




  Order placed by:                     ElmoTech Ltd.
  Address:                             2 Habarzel Street, POB 13236, Tel-Aviv, Israel
  Sample for test selected by:         The customer
  The date of test:                    January 2008




  Description of Equipment
                                       Ankle transceiver.
  Under Test (EUT):
  Model:                               TRXS830
  Serial Number:                       078FC57236
  Manufactured by:                     ElmoTech Ltd




  Reference Documents:
™ CFR 47 FCC:          Rules and Regulations; Part 15. “Radio frequency devices”;
                       Subpart B: “Unintentional radiators” (2007)
                       Subpart C: “Intentional radiators” (2007),
                       Section 15.205. “Restricted bands of operations”,
                       Section 15.209. “Radiated emission limits, general requirements”.
                       “Radiated Emission Limits, Additional Provisions”;
                       Section 15.231. “Periodic operation in the bands 40.66 – 40.70 MHz,
                               and above 70 MHz”.




  This Test Report contains 23 pages     This Test Report applies only to the specimen tested and may not
  and may be used only in full.          be applied to other specimens of the same product.


     Test Report No.: 8812315253                                  Page 2 of 23 pages
     Title: Test on Ankle transceiver     FCC ID: LCQ-TRXS-830          Model: TRXS830




                                        Table of Contents

1.    EUT Description and operation                                                       3
1.1. General description:                                                                 3
2.    Test summary                                                                        4
2.1. Potential emission sources:                                                          7
2.2. EUT setup and operation:                                                             7
3.    Measurements, examinations and derived results                                      7
3.1. Location of the Test Site:                                                           7
3.2. Test condition:                                                                      7
3.3. Initial visual check and functional test:                                            7
3.4. Radiated emission test.                                                              8
3.5. Common conditions for operation in the band above 70MHz.                             9
3.6. Test of field strength emission from intentional radiator.                          10
3.7. Test of occupied bandwidth per 15.231(c)                                            19
4.    Appendix 1. Test equipment used                                                    20

5.    Appendix 2: Antenna Factor and Cable Loss                                          21


  Test Report No.: 8812315253                                       Page 3 of 23 pages
  Title: Test on Ankle transceiver        FCC ID: LCQ-TRXS-830            Model: TRXS830




1.    EUT Description and operation

 1.1. General description:
     * Note:   the customer supplied all information in clause below.

TheTRXS830 is a portable transceiver 318 MHz carrier frequency attached to the client’s wrist or
ankle. The transceiver shall transmit the identification data with random interval 10 to 22 seconds
with additional data regarding tamper attempts and battery status to the AMS network.


     Declare maximum EIRP power:                 -2 dBm@ 318 MHz
     Type of modulation:                         MSK
     Antenna type:                               Integrated on PCB

     The EUT dimensions: 67 mm x 42 mm x 17 mm. Power source: 3.6 Volt Lithium battery.
     The EUT’s block diagram is shown in Figures 1
     External and internal views are presented in Photo #1.


                            Battery




                      Micro-controller



                            Cristal
                           8.0 MHz                     Cristal
                                                      26 MHz


                                                     Transceiver




                       Strap Catb& Body
                           Detection




                                Figure 1. Transceiver block diagram.


 Test Report No.: 8812315253                                        Page 4 of 23 pages
 Title: Test on Ankle transceiver           FCC ID: LCQ-TRXS-830           Model: TRXS830




2.      Test summary

                                                                               Comply/not
                                                   FCC Part 15
                Parameter                                                    comply with the
                                               Reference paragraph
                                                                              requirements

          Radiated emission test.             Subpart B Section 15.109             Comply

                                              “Radiated Emission Limits,
     Test of field strength emission from
                                                Additional Provisions”;            Comply
             intentional radiators
                                                   Section 15.231.

     Radiated emission from intentional
                                              Subpart C Section 15.205             Comply
       radiators in restricted bands

            Occupied bandwidth                Subpart C Section 15.231             Comply



                                              Telematics
                                              Laboratory

                                             February 2008
      Name: Eng. Yuri Rozenberg                                 Name: Michael Feldman
      Position: Head of EMC Branch                              Position: Test Technician


Test Report No.: 8812315253                               Page 5 of 23 pages
Title: Test on Ankle transceiver   FCC ID: LCQ-TRXS-830         Model: TRXS830




                                        Antenna




                      Photo 1. EUT’s external and internal view


Test Report No.: 8812315253                               Page 6 of 23 pages
Title: Test on Ankle transceiver   FCC ID: LCQ-TRXS-830           Model: TRXS830




                        Photo 2. Spurious emissions test setup.




                        Photo 3. Spurious emissions test setup.


 Test Report No.: 8812315253                                         Page 7 of 23 pages
 Title: Test on Ankle transceiver         FCC ID: LCQ-TRXS-830              Model: TRXS830




2.1. Potential emission sources:
      The potential emission sources are detailed in Table 1.

                             Table 1. Potential emission sources

                                Frequency                   Location
                              8.0 MHz crystal          PCB RC oscillator
                             26.0 MHz crystal                 PCB
                            318 MHz RF signal              Base unit



2.2. EUT setup and operation:


      Respective tests were performed in Transmission (Tx) and Receiving (Rx) modes.
      Measurements of transceiver were performed in continue transmition mode.


3.    Measurements, examinations and derived results

3.1. Location of the Test Site:
      Preliminary radiated test was conducted at the EMC laboratory of the Standards Institution
      of Israel in Tel-Aviv.
      Final tests were conducted in an Open Area Test Site located at Kibbutz Native Halamed
      Hai in Emek HaEla, Israel.


3.2. Test condition:
      Temperature: 21 °C. Humidity: 59 %. Atmospheric pressure: 1011 mbar.


3.3. Initial visual check and functional test:
       Initial visual check and brief built- in- test of the EUT was performed before testing.
       - No external damages were found.
     - The test on the EUT passed successfully.


 Test Report No.: 8812315253                                       Page 8 of 23 pages
 Title: Test on Ankle transceiver       FCC ID: LCQ-TRXS-830              Model: TRXS830




3.4. Radiated emission test.

  3.4.1. General:


    Per FCC Part 15 Subpart B Section 15.109 and Subpart C Sections 15.209, 15.231.

  ’ Initial scans were made using a peak detector but still using the appropriate ANSI IF
    bandwidth.
  ’ A tolerance limit was set 10 dB below the specification limit. Levels above the tolerance
    limit were retested using the Peak detector.


  3.4.2. Preliminary radiated emission tests:
    Preliminary investigation was performed up to ten harmonic of carrier frequency. Test was
    conducted in a semi-anechoic chamber at distance 3 meters. The EUT was setup in its
    typical configuration and operated in its various modes. For each mode of operation the
    frequency spectrum was monitored. EUT configuration, cable configuration and mode of
    operation, which produced the maximum level of emission, were documented. A list of
    frequencies to be tested was prepared.


  3.4.3. Final measurements:

    The final radiated emission measurements were performed at the Open Area Test Site at the
    same (3 m) test distance. Test was started with a new fresh battery. Measured voltage was
    3.6V The EUT was operated as described above. The EUT was installed on a turn - table.
    Biconilog and Double Ridged Guide antennas were used. The measurements were
    performed at each frequency that founded previously at which the signal level was 10 dB
    below the limit or less. The levels were maximized by rotating through three orthogonal axes,
    rotating turntable through 360° and changing antenna-to-EUT polarization from vertical to
    horizontal. The worse case result was noted in tables.


  3.4.4. Radiated emission test results:

    Test result in receive mode were found below SA noise floor and at least 15 dB under
    the section 15.109 specified limit. For plot result in receive mode refer to plots #10 and
    #11. Final result measurements in transmit mode are presented in tables and plots#1 -
    #9 in section 2.6.5.


 Test Report No.: 8812315253                                      Page 9 of 23 pages
 Title: Test on Ankle transceiver      FCC ID: LCQ-TRXS-830              Model: TRXS830




3.5. Common conditions for operation in the band above 70MHz.


  3.5.1. General:

     Per FCC Part 15 Subpart C clause 15.231 (a).


  3.5.2. Requirements:


     15.231(a) –    Transmitter is defined as a part of alarm system.
     15.231(a)(1) – Not applicable. Transmitter is not activated manually.
     15.231(a)(2) – Transmission duration is limited by program and after activation is less than
                    5 second. (See plot # 12).
     15.231(a)(3) – Transmitter not intended for regular predetermined interval transmissions.
     15.231(a)(4) – Not applicable. Transmitter is not operates during the pendency of the alarm
                    conditions.
     15.231(a)(5) - Transmitter doesn’t exceed the limits of this section.



  3.5.3. Summary:

     The EUT is complies with the requirements of clause 15.231(a).


 Test Report No.: 8812315253                                     Page 10 of 23 pages
 Title: Test on Ankle transceiver        FCC ID: LCQ-TRXS-830           Model: TRXS830




3.6. Test of field strength emission from intentional radiator.

  3.6.1. General:

     Per FCC Part 15 Subpart C clause 15.231 (b)


  3.6.2. Requirements:

     The EUT’s operation frequency is 318 MHz.
     The field strength emissions from intentional radiators operated on this frequency shall
     comply with the limit based on the average value.

                                    Calculated Field            Calculated Field
        Fundamental                 Strength limit of           Strength limit of
         Frequency                   Fundamental                  Harmonics
                                       dB (µV/m)                   dB (µV/m)

           318 MHz                        75.8                         55.8


     Note: Peak field strength shall not exceed the maximum permitted specified
           limit by more than 20 dB.
           Field strength limits are specified at a distance of 3 meters.


  3.6.3. Test procedure:

     The test was conducted according to clause 15.231.


  3.6.4. Test summery:

     The tested unit meets the standard requirement.


 Test Report No.: 8812315253                                        Page 11 of 23 pages
 Title: Test on Ankle transceiver           FCC ID: LCQ-TRXS-830             Model: TRXS830




  3.6.5. Test results:


  Carrier     Peak Ampl.       Peak Limit         Margin       Avg Ampl.*     Specified      Margin
frequency                                                                     @3m limit,
   MHz         dB (µV/m)       dB (µV/m)           dB          dB (µV/m)      dB (µV/m         dB
  318.0           91.2              95.8           4.6            57.2           75.8         18.6

  *Average amplitude result was calculated from measured Peak value – Average factor.

        For recorded Fundamental frequencies result see plots #1.
        All received spurious emissions were found below the specified limit.
        Founded spurious emissions results presented in tables below.

        Spurious emissions test result.


Freq.                                                            Specified
           Peak Ampl     Peak limit    Margin     Avg Ampl**                  Margin
                                                                   @3m                  Reference
           dB (µV/m)     dB (µV/m)         dB                      limit,       dB         Plot
 MHz                                               dB (µV/m)
                                                                 dB (µV/m)
635.94        57.6          75.8           18.2      23.6          55.8         32.2       Plot #4
954.1         75.5          75.8           0.3       41.5          55.8         14.3       Plot #5
1590.0        51.8          74.0*          22.2      17.8          54.0*        36.2       Plot #6
2226.0        52.4          74.0*          21.6      18.4          54.0*        35.6       Plot #7
2862.0        59.0          74.0*          15.0      25.0          54.0*        29.0       Plot #8
3180.0        49.8          75.8           26.0      15.8          55.8         40.0       Plot #9

   *Limit 15.205 restricted bands.
   **Average amplitude result was calculated from measured Peak value – Average factor.
     Average factor = 20 Log Tx on/100msec = 20 Log [2 ms/100] = -34 dB
     For transmitter average factor calculation see plots ## 12, 13.


Test Report No.: 8812315253                                Page 12 of 23 pages
Title: Test on Ankle transceiver    FCC ID: LCQ-TRXS-830          Model: TRXS830




               Plot # 1. Field strength of fundamental frequency 318 MHz.




         Plot # 2. Spurious emissions scan 30 – 1000 MHz. Test distance =3m.


Test Report No.: 8812315253                                Page 13 of 23 pages
Title: Test on Ankle transceiver   FCC ID: LCQ-TRXS-830          Model: TRXS830




        Plot # 3. Spurious emissions scan at 1 GHz – 3.3 GHz frequency range.




            Plot # 4. The carrier frequency second harmonic. Detector peak.


Test Report No.: 8812315253                                 Page 14 of 23 pages
Title: Test on Ankle transceiver    FCC ID: LCQ-TRXS-830           Model: TRXS830




             Plot # 5. The carrier frequency third harmonic. Detector peak.




              Plot # 6. The carrier frequency 5 th harmonic. Detector peak.


Test Report No.: 8812315253                                 Page 15 of 23 pages
Title: Test on Ankle transceiver    FCC ID: LCQ-TRXS-830           Model: TRXS830




              Plot # 7. The carrier frequency 7 th harmonic. Detector peak.




              Plot # 8. The carrier frequency 9 th harmonic. Detector peak.


Test Report No.: 8812315253                                Page 16 of 23 pages
Title: Test on Ankle transceiver   FCC ID: LCQ-TRXS-830           Model: TRXS830




             Plot # 9. The carrier frequency 10 th harmonic. Detector peak.




                  Plot # 10. Rx mode. Scan of spurious emissions
            Frequency range from 30 MHz to 1000 MHz. Test distance =3m.


Test Report No.: 8812315253                               Page 17 of 23 pages
Title: Test on Ankle transceiver   FCC ID: LCQ-TRXS-830         Model: TRXS830




                   Plot # 11. Rx mode. Scan of spurious emissions.
              Frequency range from 1 GHz to 3.5 GHz. Test distance =3m


  Test Report No.: 8812315253                                  Page 18 of 23 pages
  Title: Test on Ankle transceiver     FCC ID: LCQ-TRXS-830           Model: TRXS830




                           Plot # 12. Transmition duration - Tx on.




                           Plot # 13. Transmition duration - Tx off



AVG factor was calculated as 20 Log (Tx on/100 msec) = 20 Log [(2 ms)/100] = -34 dB


 Test Report No.: 8812315253                                  Page 19 of 23 pages
 Title: Test on Ankle transceiver      FCC ID: LCQ-TRXS-830          Model: TRXS830




3.7. Test of occupied bandwidth per 15.231(c)


  3.7.1. Requirements:

     The bandwidth of the emissions shall be no wide than 0.25% of the center frequency for
     devises operating above 70 MHz and below 900 MHz. Bandwidth is determined at the
     points 20 dB down from the centre of modulated carrier.
     For 318 MHz centre frequency allowed occupied bandwidth shell be less than (318/100)
     0.25 = 0.795 MHz.

  3.7.2. Test results:

     Test result is presented in plot # 14 below.




                         Plot # 14. Occupied bandwidth test result


  3.7.3. Test summary:

     20 dB occupied bandwidth is 245 kHz.
     The tested unit meets the standards requirements.


 Test Report No.: 8812315253                                      Page 20 of 23 pages
 Title: Test on Ankle transceiver       FCC ID: LCQ-TRXS-830             Model: TRXS830




4.   Appendix 1. Test equipment used
      All measurements equipment is on SII calibration schedule with a recalibration interval not
      exceeding one year.

                                                                                    Due
            Instrument              MFR           Model          Serial No.     calibration
                                                                                   date
     EMI Receiver                              8546A+85460
                                     HP                           SII 4068     March 2008
     9 kHz – 6.5 GHz                                A
     Biconilog Antenna              Teseq
                                    GmbH        CBL 6112D       S/N 23181       May 2008
     30 – 2000 MHz
     EMI Analyser                                                                October
                                     HP           E7405A          SII 4944
     9 kHz - 26.5 GHz                                                             2008
     Antenna Double Ridged
                                    EMCO           3115           SII4873      March 2008
     Guide, 1-18 GHz
     Oscilloscope                    HP           54610B       US37340682       May 2008
     RF cable, 3m                 Sucoflex        104PE         21328/4PE        Oct 2008
     Antenna Mast                   R&S            HCM            100002           N/A
     Metallic turntable             R&S           HCT12           100001           N/A
     Positioning controller         R&S            HCC            100002           N/A


 Test Report No.: 8812315253                                   Page 21 of 23 pages
 Title: Test on Ankle transceiver       FCC ID: LCQ-TRXS-830         Model: TRXS830




5.   Appendix 2: Antenna Factor and Cable Loss

                                    Cable Loss (10m cable + Mast)


        Point    Frequency          Cable Loss   Point   Frequency     Cable Loss
                   (MHz)               (dB)                (MHz)          (dB)

          1           30               0.53       21        1000          3.68

          2           50               0.75       22        1100          3.82

          3          100               1.08       23        1200          4.07

          4          150               1.39       24        1300          4.24

          5          200               1.61       25        1400          4.43

          6          250              1.752       26        1500           4.6

          7          300               2.00       27        1600           4.7

          8          350               2.15       28        1700          4.85

          9          400               2.26       29        1800          4.98

          10         450              2.383       30        1900          5.19

          11         500               2.52       31        2000          5.34

          12         550              2.606       32        2100          5.51

          13         600               2.75       33        2200          5.69

          14         650              2.856       34        2300          5.89

          15         700               3.06       35        2400          6.07

          16         750               3.20       36        2500          6.22

          17         800               3.27       37        2600          6.28

          18         850               3.38       38        2700          6.41

          19         900               3.46       39        2800          6.53

          20         950               3.55       40        2900          6.84


Test Report No.: 8812315253                                            Page 22 of 23 pages
Title: Test on Ankle transceiver             FCC ID: LCQ-TRXS-830                Model: TRXS830



                                   Table 2. Antenna Factor
                For Bilog Antenna, Model Number: CBL 6112D, S/N: 23181

    No.    f / MHz)   AF / dB/m   f / MHz)    AF / dB/m   f / MHz)   AF / dB/m    f / MHz)   AF / dB/m
     1         30       17.90        170        9.40         530       17.70        1040       22.20
     2         32       16.70        175        9.00         540       18.25        1060       22.50
     3         34       15.55        180        8.50         550       18.60        1080       22.50
     4         36       14.35        185        8.45         560       14.45        1100       22.40
     5         38       13.30        190        8.60         570       18.40        1120       22.60
     6         40       12.20        195        8.85         580       18.50        1140       22.45
     7         42       11.05        200        8.95         590       18.60        1160       22.50
     8         44       9.95         205        8.80         600       18.60        1180       22.40
     9         46       8.90         210        8.50         610       18.80        1200       22.80
    10         48       8.05         215        8.20         620       18.99        1220       22.95
    11         50       7.30         220        8.50         630       19.05        1240       23.10
    12         52       6.80         225        9.00         640       19.23        1260       23.40
    13         54       6.45         230        9.65         650       19.10        1280       23.35
    14         56       6.00         235        10.30        660       19.13        1300       23.62
    15         58       5.70         240        11.00        670       19.04        1320       23.64
    16         60       5.45         245        11.60        680       19.00        1340       23.86
    17         62       5.30         250        12.00        690       19.17        1360       23.95
    18         64       5.20         255        12.45        700       19.28        1380       23.90
    19         66       5.30         260        12.85        710       19.25        1400       24.45
    20         68       5.30         265        12.50        720       19.45        1420       24.74
    21         70       5.35         270        12.45        730       19.75        1440       24.93
    22         72       5.50         275        12.40        740       19.95        1460       25.03
    23         74       5.80         280        12.55        750       20.07        1480       25.45
    24         76       6.00         285        12.65        760       19.85        1500       25.30
    25         78       6.60         290        12.75        770       19.80        1520       25.25
    26         80       6.70         295        12.95        780       19.85        1540       25.36
    27         82       7.15         300        13.00        790       19.95        1560       25.58
    28         84       7.60         310        13.35        800       20.05        1580       25.50
    29         86       8.10         320        13.75        810       20.10        1600       25.65
    30         88       8.50         330        13.85        820       20.35        1620       25.60
    31         90       8.90         340        14.10        830       20.40        1640       25.70
    32         92       9.20         350        14.50        840       20.35        1660       25.83
    33         94       9.75         360        14.70        850       20.46        1680       25.97
    34         96       9.95         370        14.90        860       20.39        1700       26.10
    35         98       10.20        380        15.10        870       20.29        1720       26.25
    36        100       10.50        390        15.45        880       20.24        1740       26.04
    37        105       11.25        400        16.00        890       20.35        1760       26.14
    38        110       11.70        410        16.40        900       20.55        1780       26.20
    39        115       11.70        420        16.70        910       20.45        1800       26.40
    40        120       11.80        430        16.35        920       20.60        1820       26.64
    41        125       11.80        440        16.30        930       20.60        1840       26.86
    42        130       11.70        450        16.30        940       20.66        1860       27.12
    43        135       11.35        460        16.70        950       20.88        1880       27.00
    44        140       10.95        470        17.05        960       21.11        1900       27.25
    45        145       10.35        480        17.20        970       20.93        1920       27.36
    46        150       10.05        490        17.30        980       21.03        1940       27.68
    47        155       9.70         500        17.40        990       21.05        1960       27.10
    48        160       9.70         510        17.50       1000       21.10        1980       27.06
    49        165       9.45         520        17.60       1020       21.40        2000       27.25


Test Report No.: 8812315253                                   Page 23 of 23 pages
Title: Test on Ankle transceiver       FCC ID: LCQ-TRXS-830          Model: TRXS830


                                  Antenna Factor
          Double Ridged Guide Antenna mfr EMCO model 3115 1m calibration

                Point          Frequency (MHz)       Antenna Factor (dB/m)
                   1                 1000                     23.9
                   2                 2000                     28.3
                   3                 3000                     31.0
                   4                 4000                     33.1
                   5                 4500                     32.5
                   6                 5000                     32.4
                   7                 6000                     53.7
                   8                 6500                     35.6
                   9                 7000                     36.4
                  10                 7500                     36.9
                  11                 8000                     37.0
                  12                 8500                     38.0
                  13                 9000                     38.6
                  14                 9500                     38.4
                  15                10000                     38.4
                  16                10500                     38.4
                  17                11000                     38.9
                  18                11500                     39.6
                  19                12000                     39.4
                  20                12500                     39.2
                  21                13000                     40.3
                  22                13500                     41.0
                  23                14000                     41.2
                  24                14500                     41.3
                  25                15000                     40.0
                  26                15500                     38.0
                  27                16000                     38.1
                  28                16500                     40.3
                  29                17000                     42.2
                  30                17500                     44.6
                  31                18000                     46.2




                                          Cable Loss
                       Type: Sucoflex 104PE; Ser.No.21328/4PE; 3 m length

                 Point         Frequency (GHz)          Cable Loss (dB)
                   0                  0.0-1.8                 1.67
                   1                1.8 – 3.6                 2.39
                   2                3.6 – 5.4                 3.04
                   3                  5.4-7.2                 3.58
                   4                  7.2-9.0                 4.06
                   5                 9.0-10.8                 4.49
                   6                10.8-12.6                 4.91
                   7                12.6-14.4                 5.31
                   8                14.4-16.2                 5.66
                   9               16.2-18.00                 6.01



Document Created: 2008-05-11 10:41:59
Document Modified: 2008-05-11 10:41:59

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC