Test Report

FCC ID: ST2-DM763

Test Report

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FCCID_1802197

FCC ID: ST2-DM763

Table of Contents

Report Cover Page .................................................................................................... 1

Table of Contents ...................................................................................................... 2

Figures ....................................................................................................................... 3

1. GENERAL INFORMATION .................................................................................. 4
1.1 Verification of Compliance ......................................................................... 4
1.2 Equipment Modifications............................................................................ 5
1.3 Product Information ................................................................................... 6
1.4 Test Methodology ...................................................................................... 6
1.5 Test Facility ............................................................................................... 6
1.6 Test Equipment .......................................................................................... 7
1.7 Statement for the Document Use ................................................................ 7
2. PRODUCT LABELING .......................................................................................... 8
3. SYSTEM TEST CONFIGURATION ...................................................................... 9
3.1 Justification ................................................................................................ 9
3.2 Special Accessories .................................................................................... 9
3.3 Configuration of Tested System.................................................................. 9
4. SYSTEM SCHEMATICS ....................................................................................... 14
5. RADIATED EMISSION DATA ............................................................................. 15
5.1 Field Strength Calculation .......................................................................... 15
5.2 Test Methods and Conditions ..................................................................... 15
5.3 Test Data ................................................................................................... 15
6. EUT RECEIVING MODE VERIFICATION .......................................................... 24
7. PHOTOS OF TESTED EUT ................................................................................... 25

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

Figures

Figure 2.1 FCC ID Label........................................................................................... 8

Figure 2.2 Location of Label on Back of the EUT.................................................... 8

Figure 3.1 Radiated Test Setup, Position 1 .............................................................. 10

Figure 3.2 Radiated Test Setup, Position 2 .............................................................. 11

Figure 3.3 Radiated Test Setup, Position 3 .............................................................. 12

Figure 3.4 Radiated Test Setup................................................................................. 13

Figure 4.1 EUT Schematics ....................................................................................... 14

Figure 7.1 Front View ............................................................................................... 26

Figure 7.2 Back View ................................................................................................ 27

Figure 7.3 Inside View ............................................................................................... 28

Figure 7.4 PCB Component Side ............................................................................ 29

Figure 7.5 PCB Foil Side View.................................................................................. 30

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

1.2 Equipment Modifications

N/A

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

3. SYSTEM TEST CONFIGURATION
3.1 Justification

The system was configured for testing in a typical fashion (as a customer would normally use it).
And its antenna was permanently attached to the EUT: wire type (max length 3”) for 900MHz band
& stripe line antenna for 2.4GHz Band.

Testing was performed as EUT was continuously operated at the following frequency channels:

Low=904MHz, Middle= 915MHz, High=926MHz and
Low=2412MHz, Middle= 2437MHz, High=2462MHz

Fresh external battery was used for extended operating time.

3.2 Special Accessories

N/A

3.3 Configuration of Tested System

Figure 3.1 to Figure 3.4 illustrate this system, which is tested standing along.

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

4. SYSTEM SCHEMATICS

See Attachment.

Figure 4.1 System Schematics

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

5. RADIATED EMISSION DATA

5.1 Field Strength Calculation
The corrected field strength is automatically calculated by EMI Receiver using following:
FS = RA +AF + CF + AG
where FS: Corrected Field Strength in dB V/m
RA: Amplitude of EMI Receiver before correction in dB V
AF: Antenna Factor in dB/m
CF: Cable Attenuation Factor in dB
AG: Built-in Preamplifier Gain in dB (Stored in receiver as part of the calibration data)

THE “DUTY CYCLE CORRECTION FACTOR” FOR SPURIOUS RADIATED EMISSIONS IS;
20 log * (4 ms / 100 ms) = -28 dB, WHICH WAS USED TO CORRECT THE AVERAGE RADIATED
EMISSION READINGS.

5.2 Test Methods and Conditions

The initial step in collecting radiated data is a EMI Receiver scan of the measurement range below
30MHz using peak detector and 9KHz IF bandwidth / 30KHz video bandwidth. For the range
30MHz - 1GHz, 100KHz IF bandwidth / 100KHz video bandwidth are used. Both bandwidths are
1MHz for above 1GHz measurement. The radio spectrum was investigated from the lowest
frequency generated within the device (without going below 9 kHz) up to the 10th harmonic of the
rated transmitted emission.

5.3 Test Data

The following data lists the significant emission frequencies, polarity and position, peak reading of
the EMI Receiver, the FCC limit, and the difference between the peak reading and the limit.
Explanation of the correction and calculation are given in section 5.1.

Test Personnel:

Typed/Printed Name: Edward Lee Date: September 17, 2012

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

Radiated Test Data (CH-904MHz/915MHz/926MHz & Harmonics)

Peak
Frequency Polarity Antenna Azimuth Reading FCC 3m Difference
Reading
(V,H) Height at 3m After Limit
Position (2) Correction (1)
(MHz) (X,Y,Z) (m) (Degree) (dBuV/m) (dBuV/m) (dBuV/m) (dBuV/m)
904 V/X 1.1 090 81.1 53.1 94 -40.9
1808 V/X 1.1 180 59.3 31.3 54 -22.7
2712 V/X 1.1 180 62.9 34.9 54 -19.1
904 H/X 1.0 180 87.7 59.7 94 -34.3
1808 H/X 1.1 200 54.7 26.7 54 -27.3
2712 H/X 1.1 330 58.7 30.7 54 -23.3

915 V/X 1.1 135 81.0 53.0 94 -41.0
1830 V/X 1.1 000 54.9 26.9 54 -27.1
2745 V/X 1.1 000 62.5 34.5 54 -19.5
915 H/X 1.0 045 87.2 59.2 94 -34.8
1830 H/X 1.1 000 55.5 27.5 54 -26.5
2745 H/X 1.1 045 60.1 32.1 54 -21.9

926 V/X 1.1 180 80.1 52.1 94 -41.9
1852 V/X 1.1 180 56.9 28.9 54 -25.1
2778 V/X 1.1 180 61.3 33.3 54 -20.7
926 H/X 1.0 235 85.8 57.8 94 -36.2
1852 H/X 1.1 330 54.9 26.9 54 -27.1
2778 H/X 1.1 180 60.5 32.5 54 -21.5

904 V/Y 1.1 090 86.5 58.5 94 -35.5
1808 V/Y 1.1 180 52.5 24.5 54 -29.5
2712 V/Y 1.1 045 61.5 33.5 54 -20.5
904 H/Y 1.0 180 89.0 61.0 94 -33.0
1808 H/Y 1.1 000 48.3 20.3 54 -33.7
2712 H/Y 1.1 180 58.3 30.3 54 -23.7

915 V/Y 1.1 090 85.1 57.1 94 -36.9
1830 V/Y 1.1 270 56.4 28.4 54 -25.6
2745 V/Y 1.1 090 63.2 35.2 54 -18.8
915 H/Y 1.0 180 87.6 59.6 94 -34.4
1830 H/Y 1.1 180 52.4 24.4 54 -29.6
2745 H/Y 1.1 135 60.4 32.4 54 -21.6

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

926 V/Y 1.1 090 83.8 55.8 94 -38.2
1852 V/Y 1.1 090 58.9 30.9 54 -23.1
2778 V/Y 1.1 270 61.0 33.0 54 -21.0
926 H/Y 1.0 180 86.1 58.1 94 -35.9
1852 H/Y 1.1 180 53.7 25.7 54 -28.3
2778 H/Y 1.1 180 59.2 31.2 54 -22.8

904 V/Z 1.1 315 90.9 62.9 94 -31.1
1808 V/Z 1.1 235 49.2 21.2 54 -32.8
2712 V/Z 1.1 180 62.5 34.5 54 -19.5
904 H/Z 1.0 135 83.4 55.4 94 -38.6
1808 H/Z 1.1 180 52.7 24.7 54 -29.3
2712 H/Z 1.1 180 61.2 33.2 54 -20.8

915 V/Z 1.1 270 88.6 60.6 94 -33.4
1830 V/Z 1.1 180 52.3 24.3 54 -29.7
2745 V/Z 1.1 270 63.4 35.4 54 -18.6
915 H/Z 1.0 045 82.3 54.3 94 -39.7
1830 H/Z 1.1 180 54.8 26.8 54 -27.2
2745 H/Z 1.1 180 61.2 33.2 54 -20.8

926 V/Z 1.1 235 87.5 59.5 94 -34.5
1852 V/Z 1.1 090 54.8 26.8 54 -27.2
2778 V/Z 1.1 135 61.6 33.6 54 -20.4
926 H/Z 1.0 135 80.1 52.1 94 -41.9
1852 H/Z 1.1 180 61.6 33.6 54 -20.4
2778 H/Z 1.1 180 55.0 27.0 54 -27.0

(1) The limit for emissions within the 902-928MHz band is 50mV(94dB) per Sec. 15.249. The limit
for its harmonics is 500uV (54dB). Other spurious emissions shall be lower than either its
fundamental by 50dB or the limit defined in Sec. 15.209, whichever is higher.
(2) If each peak reading is less than the FCC average limit, it’ll be not necessary to show the
measured/ calculated average reading.

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

Radiated Test Data (CH-2412MHz/2437MHz/2462MHz & Harmonics)

Peak
Frequency Polarity Antenna Azimuth Reading FCC 3m Difference
Reading
(V,H) Height at 3m After Limit
Position (2) Correction (1)
(MHz) (X,Y,Z) (m) (Degree) (dBuV/m) (dBuV/m) (dBuV/m) (dBuV/m)
2412 V/X 1.1 090 95.8 67.8 94 -26.2
4824 V/X 1.1 000 67.3 39.3 54 -14.7
7236 V/X 1.0 090 55.5 27.5 54 -26.5
2412 H/X 1.1 000 96.7 68.7 94 -25.3
4824 H/X 1.0 045 63.7 35.7 54 -18.3
7236 H/X 1.0 045 51.8 23.8 54 -30.2

2437 V/X 1.1 045 96.4 68.4 94 -25.6
4874 V/X 1.0 090 65.6 37.6 54 -16.4
7310 VX 1.0 090 55.2 27.2 54 -26.8
2437 H/X 1.0 000 93.7 65.7 94 -28.3
4874 H/X 1.0 000 62.7 34.7 54 -19.3
7310 H/X 1.0 045 51.2 23.2 54 -30.8

2462 V/X 1.1 090 95.3 67.3 94 -26.7
4924 V/X 1.0 045 63.2 35.2 54 -18.8
7386 V/X 1.0 045 56.7 28.7 54 -25.3
2462 H/X 1.1 000 94.9 66.9 94 -27.1
4924 H/X 1.0 000 63.8 35.8 54 -18.2
7386 H/X 1.0 000 51.6 23.6 54 -30.4

2412 V/Y 1.1 000 97.0 69 94 -25.0
4824 V/Y 1.1 045 67.9 39.9 54 -14.1
7236 V/Y 1.0 000 59.0 31 54 -23.0
2412 H/Y 1.1 000 92.1 64.1 94 -29.9
4824 H/Y 1.1 000 61.5 33.5 54 -20.5
7236 H/Y 1.0 000 51.4 23.4 54 -30.6

2437 V/Y 1.1 135 97.9 69.9 94 -24.1
4874 V/Y 1.1 180 66.7 38.7 54 -15.3
7310 V/Y 1.0 135 57.6 29.6 54 -24.4
2437 H/Y 1.1 090 92.8 64.8 94 -29.2
4874 H/Y 1.0 135 61.5 33.5 54 -20.5
7310 H/Y 1.0 135 51.1 23.1 54 -30.9

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

2462 V/Y 1.1 000 96.3 68.3 94 -25.7
4924 V/Y 1.0 000 65.3 37.3 54 -16.7
7386 V/Y 1.0 045 54.1 26.1 54 -27.9
2462 H/Y 1.1 180 90.5 62.5 94 -31.5
4924 H/Y 1.0 225 61.0 33 54 -21.0
7386 H/Y 1.0 225 50.8 22.8 54 -31.2

2412 V/Z 1.1 045 97.2 69.2 94 -24.8
4824 V/Z 1.1 000 68.6 40.6 54 -13.4
7236 V/Z 1.0 045 57.6 29.6 54 -24.4
2412 H/Z 1.1 180 97.4 69.4 94 -24.6
4824 H/Z 1.0 135 65.9 37.9 54 -16.1
7236 H/Z 1.0 135 53.2 25.2 54 -28.8

2437 V/Z 1.1 090 97.7 69.7 94 -24.3
4874 V/Z 1.1 090 69.7 41.7 54 -12.3
7310 V/Z 1.0 135 58.6 30.6 54 -23.4
2437 H/Z 1.1 270 96.4 68.4 94 -25.6
4874 H/Z 1.1 235 63.6 35.6 54 -18.4
7310 H/Z 1.0 270 50.2 22.2 54 -31.8

2462 V/Z 1.1 000 99.6 71.6 94 -22.4
4924 V/Z 1.0 180 69.9 41.9 54 -12.1
7386 V/Z 1.0 180 58.9 30.9 54 -23.1
2462 H/Z 1.1 000 93.5 65.5 94 -28.5
4924 H/Z 1.0 180 62.9 34.9 54 -19.1
7386 H/Z 1.0 180 51.7 23.7 54 -30.3

The limit for emissions within the 2400-2483.5MHz band is 50mV(94dB) per Sec. 15.249.
The limit for its harmonics is 500uV (54dB). Other spurious emissions shall be lower than either its
fundamental by 50dB or the limit defined in Sec. 15.209, whichever is higher.
(2) If each peak reading is less than the FCC average limit, it’ll be not necessary to show the
measured/ calculated average reading.

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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FCC ID: ST2-DM763

Other Spurious outside of the band 902-928MHz

Peak
Frequency Polarity Antenna Azimuth FCC 3m Difference
Reading
(V,H) Height at 3m Limit
Position (2) (1)
(MHz) (X,Y,Z) (m) (Degree) (dBuV/m) (dBuV/m) (dBuV/m)
578.3 V 1.1 270 36.7 46.5 -9.8
890.4 V 1.1 190 36.9 46.5 -9.6
928.6 V 1.0 180 37.7 46.5 -8.8
327.3 H 1.0 090 36.5 46.5 -10.0
475.0 H 1.0 010 35.0 46.5 -11.5

Other Spurious outside of the band 2400-2483.5MHz

Peak
Frequency Polarity Antenna Azimuth FCC 3m Difference
Reading
(V,H) Height at 3m Limit
Position (2) (1)
(MHz) (X,Y,Z) (m) (Degree) (dBuV/m) (dBuV/m) (dBuV/m)
1456.0 V 1.1 080 42.5 54.0 -11.5
1692.4 V 1.1 045 41.4 54.0 -12.6
1909.8 V 1.1 090 44.9 54.0 -9.1
1457.0 H 1.0 020 44.8 54.0 -9.2
1909.0 H 1.0 200 45.9 54.0 -8.1

Comparing to the limit defined in Sec. 15.209, emissions below the limit by 20dB were not recorded.

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Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728

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Document Created: 2019-11-13 17:53:04
Document Modified: 2019-11-13 17:53:04

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