Test Report

FCC ID: NMTSZ990

Test Report

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FCCID_1329150

INTERTEK TESTING SERVICES

Table of Contents

1.0 General Description ........................................................................................ 1
1.1 Product Description ........................................................................................... 1
1.2 Related Submittal(s) Grants............................................................................... 1
1.3 Test Methodology.............................................................................................. 1
1.4 Test Facility....................................................................................................... 1

2.0 System Test Configuration ............................................................................. 2
2.1 Justification ....................................................................................................... 2
2.2 EUT Exercising Software................................................................................... 2
2.3 Special Accessories .......................................................................................... 2
2.4 Equipment Modification ..................................................................................... 2
2.5 Measurement Uncertainty.................................................................................. 2
2.6 Support Equipment List and Description ............................................................ 2

3.0 Emission Results ............................................................................................ 3
3.1 Field Strength Calculation.................................................................................. 3
3.2 Radiated Emission Configuration Photograph.................................................... 4
3.3 Radiated Emission Data .................................................................................... 4

4.0 Equipment Photographs................................................................................. 6

5.0 Product Labelling ............................................................................................ 6

6.0 Technical Specifications................................................................................. 6

7.0 Instruction Manual .......................................................................................... 6

8.0 Miscellaneous Information ............................................................................. 6
8.1 Measured Bandwidth......................................................................................... 7
8.2 Discussion of Pulse Desensitization................................................................... 7
8.3 Calculation of Average Factor............................................................................ 7
8.4 Emissions Test Procedures ............................................................................... 8

9.0 Equipment List ................................................................................................ 9

Report No.: HK10051167-1
FCC ID: NMTSZ990
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INTERTEK TESTING SERVICES

1.0 General Description

1.1 Product Description

The Oregon Scientific SZ990 is a Heart Rate chest belt operating at single
frequency 2.457GHz. It is powered by 3VDC (1 x 3V ‘CR2032’ battery). The
SZ990 chest belt is a transmitter that operates in conjunction with SE833 or
other compatible watches. It is worn on the chest and detects the user’s heart
rate. Then this information is converted into digital signal, calculated by the
microcontroller and then the data is transmitted to the watch via a radio link.

Antenna Type : Internal, Integral

For electronic filing, the brief circuit description is saved with filename: descri.pdf.

1.2 Related Submittal(s) Grants

This is a single application for certification of a transmitter.

The transceiver for this transmitter (with FCC ID: NMTSE833) has been
authorized by Certification procedure.

1.3 Test Methodology

Radiated emission measurements were performed according to the procedures
in ANSI C63.4 (2003). All radiated measurements were performed in an Open
Area Test Site. Preliminary scans were performed in the Open Area Test Site
only to determine worst case modes. All radiated tests were performed at an
antenna to EUT distance of 3 meters, unless stated otherwise in the
“Justification Section” of this Application.

1.4 Test Facility

The open area test site and conducted measurement facility used to collect the
radiated data is located at Garment Centre, 576 Castle Peak Road, Kowloon,
Hong Kong. This test facility and site measurement data have been placed on
file with the FCC.

Report No.: HK10051167-1
FCC ID: NMTSZ990
1

INTERTEK TESTING SERVICES

2.0 System Test Configuration

2.1 Justification

The system was configured for testing in a typical fashion (as a customer would
normally use it), and in the confines as outlined in ANSI C63.4 (2003).

The device was powered by 3VDC (1 x 3V “CR2032” battery).

For maximizing emissions, the EUT was rotated through 360°, the antenna
height was varied from 1 meter to 4 meters above the ground plane, and the
antenna polarization was changed. This step by step procedure for maximizing
emissions led to the data reported in Exhibit 3.0.

The unit was operated standalone and placed in the center of the turntable.

The equipment under test (EUT) was configured for testing in a typical fashion
(as a customer would normally use it). The EUT was mounted to a plastic stand
if necessary and placed on the wooden turntable, which enabled the engineer to
maximize emissions through its placement in the three orthogonal axes.

2.2 EUT Exercising Software

There was no special software to exercise the device. Once the unit is
powered up, it transmits the RF signal continuously.

2.3 Special Accessories

There are no special accessories necessary for compliance of this product.

2.4 Equipment Modification

Any modifications installed previous to testing by IDT Technology Limited will be
incorporated in each production model sold/leased in the United States.

No modifications were installed by Intertek Testing Services Hong Kong Ltd.

2.5 Measurement Uncertainty

When determining of the test conclusion, the Measurement Uncertainty of test
has been considered.

2.6 Support Equipment List and Description

N/A.

Report No.: HK10051167-1
FCC ID: NMTSZ990
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INTERTEK TESTING SERVICES

3.0 Emission Results

Data is included of the worst case configuration (the configuration which resulted
in the highest emission levels). A sample calculation, configuration photographs
and data tables of the emissions are included.

3.1 Field Strength Calculation

The field strength is calculated by adding the Antenna Factor and Cable Factor,
and subtracting the Amplifier Gain (if any), Average Factor (optional) from the
measured reading. The basic equation with a sample calculation is as follows:
FS = RA + AF + CF - AG - AV
where FS = Field Strength in dBµV/m
RA = Receiver Amplitude (including preamplifier) in dBµV
CF = Cable Attenuation Factor in dB
AF = Antenna Factor in dB
AG = Amplifier Gain in dB
AV = Average Factor in dB

In the following table(s), the reading shown on the data table reflects the preamplifier
gain. An example for the calculations in the following table is as follows:
FS = RR + LF
where FS = Field Strength in dBµV/m
RR = RA - AG - AV in dBµV
LF = CF + AF in dB

Assume a receiver reading of 52.0 dBµV is obtained. The antenna factor of
7.4 dB and cable factor of 1.6 dB are added. The amplifier gain of 29 dB and
average factor of 5 dB are subtracted, giving a field strength of 27 dBµV/m.
This value in dBµV/m was converted to its corresponding level in µV/m.

RA = 52.0 dBµV/m
AF = 7.4 dB RR = 18.0 dBµV
CF = 1.6 dB LF = 9.0 dB
AG = 29.0 dB
AV = 5.0 dB
FS = RR + LF
FS = 18 + 9 = 27 dBµV/m

Level in µV/m = Common Antilogarithm [(27 dBµV/m)/20] = 22.4 µV/m

Report No.: HK10051167-1
FCC ID: NMTSZ990
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INTERTEK TESTING SERVICES

3.2 Radiated Emission Configuration Photograph

The worst case in radiated emission was found at 4914.024 MHz

For electronic filing, the worst case radiated emission configuration photographs
are saved with filename: radiated photos.pdf.

3.3 Radiated Emission Data

The data on the following page lists the significant emission frequencies, the
limit and the margin of compliance. Numbers with a minus sign are below the
limit.

Judgment: Passed by 17.2 dB

Report No.: HK10051167-1
FCC ID: NMTSZ990
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INTERTEK TESTING SERVICES

Applicant: IDT Technology Limited Date of Test: May 28, 2010
Model: SZ990
Worst-Case Operating Mode: Tx mode

Table 1

Radiated Emissions
Pursuant to FCC Part 15 Section 15.249 Requirement

Polari- Frequency Reading Pre-amp Antenna Net at Average Calculated Average Limit Margin
zation (MHz) (dBµV) Gain Factor 3m - Peak Factor at 3m at 3m (dB)
(dB) (dB) (dBµV/m) (dB) (dBµV/m) (dBµV/m)
V 2457.012 42.4 33 29.4 93.0 54.2 38.8 94.0 -55.2
V 4914.024 0.7 33 34.9 56.8 54.2 2.6 54.0 -51.4
V 7371.036 -2.5 33 37.9 56.6 54.2 2.4 54.0 -51.6
V 9828.048 -12.0 33 40.4 49.6 54.2 -4.6 54.0 -58.6
V 12285.060 -12.9 33 40.5 48.8 54.2 -5.4 54.0 -59.4
V 14742.072 -10.1 33 38.4 49.5 54.2 -4.7 54.0 -58.7
V 17199.084 -8.9 33 37.6 49.9 54.2 -4.3 54.0 -58.3

Polari- Frequency Reading Pre-amp Antenna Net at Peak Limit Margin
zation (MHz) (dBµV) Gain Factor 3m - Peak at 3m (dB)
(dB) (dB) (dBµV/m) (dBµV/m)
V 2457.012 96.6 33 29.4 93.0 114.0 -21.0
V 4914.024 54.9 33 34.9 56.8 74.0 -17.2
V 7371.036 51.7 33 37.9 56.6 74.0 -17.4
V 9828.048 42.2 33 40.4 49.6 74.0 -24.4
V 12285.060 41.3 33 40.5 48.8 74.0 -25.2
V 14742.072 44.1 33 38.4 49.5 74.0 -24.5
V 17199.084 45.3 33 37.6 49.9 74.0 -24.1

NOTES: 1. Peak Detector Data unless otherwise stated.

2. All measurements were made at 3 meters. Harmonic emissions not
detected at the 3-meter distances were measured at 0.3-meter and an
inverse proportional extrapolation was performed to compare the signal
level to the 3-meter limit. No other harmonic emissions than those
reported were detected at a test distance of 0.3-meter.

3. Negative sign in the column shows value below limit.

4. Horn antenna is used for the emission over 1000MHz.

Report No.: HK10051167-1
FCC ID: NMTSZ990
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INTERTEK TESTING SERVICES

4.0 Equipment Photographs

For electronic filing, the photographs are saved with filename: external photos.pdf
and internal photos.pdf.

5.0 Product Labelling

For electronics filing, the FCC ID label artwork and the label location are saved
with filename: label.pdf.

6.0 Technical Specifications

For electronic filing, the block diagram and schematic of the tested EUT are
saved with filename: block.pdf and circuit.pdf respectively.

7.0 Instruction Manual

For electronic filing, a preliminary copy of the Instruction Manual is saved with
filename: manual.pdf.

This manual will be provided to the end-user with each unit sold/leased in the
United States.

8.0 Miscellaneous Information

The miscellaneous information includes details of the test procedure and
measured bandwidth / calculation of factor such as pulse desensitization and
averaging factor (calculation and timing diagram).

Report No.: HK10051167-1
FCC ID: NMTSZ990
6

INTERTEK TESTING SERVICES

8.1 Measured Bandwidth

From the following plots, they show that the fundamental emissions are confined
in the specified band (2400MHz to 2483.5MHz). In case of the fundamental
emissions are within two standard bandwidths from the bandedge, the delta
measurement technique is used for determining bandedge compliance.
Standard bandwidth is the bandwidth specified by ANSI C63.4 (2003) for
frequency being measured.

Emissions radiated outside of the specified frequency bands, except harmonics,
are attenuated by 50dB below the level of the fundamental or to the general
radiated emissions limits in Section 15.209, whichever is the lesser attenuation,
which meet the requirement of part 15.249(d).

Peak Measurement (Upper side)
Bandedge compliance is determined by applying marker-delta method, i.e.
Bandedge Plot.

Resultant field strength = Fundamental emissions (peak value) – delta from the
plot
= 93.00dBμV/m – 47.18dBμV/m
= 45.82dBμV/m

The resultant field strength meets the general radiated emission limit in section
15.209, which does not exceed 54dBμV/m (Average Limit) and 74dBμV/m
(Peak Limit).

8.2 Discussion Pulse Desensitivity

Pulse desnesitivity is not applicable for this device. The effective period (Teff)
is approximately 0.194ms for a ditital “1” bit which illustrated on technical
specification, with a resolution bandwidth (3dB) of 1MHz, so the pulse
densensitivity factor is 0dB.

8.3 Calculation of Average Factor

The duty cycle is simply the on-time divided by the period:

The duration of one cycle = 100ms

Effective period of the cycle = 0.194ms

DC = 0.194ms/ 100ms = 0.00194

Therefore, the averaging factor is found by 20log (0.00194) = -54.2dB.

Report No.: HK10051167-1
FCC ID: NMTSZ990
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INTERTEK TESTING SERVICES

8.4 Emissions Test Procedures (cont’d)

The EUT is warmed up for 15 minutes prior to the test.

AC power to the unit is varied from 85% to 115% nominal and variation in the
fundamental emission field strength is recorded. If battery powered, a new,
fully charged battery is used.

Conducted measurements were made as described in ANSI C63.4 - 2003.

The IF bandwidth used for measurement of radiated signal strength was 100 kHz
or greater when frequency is below 1000 MHz. Where pulsed transmissions of
short enough pulse duration warrant, a greater bandwidth is selected according
to the recommendations of Hewlett Packard Application Note 150-2. A discussion
of whether pulse desensitivity is applicable to this unit is included in this report
(See Exhibit 8.1). Above 1000 MHz, a resolution bandwidth of 1 MHz is used.

Transmitter measurements are normally conducted at a measurement distance
of three meters. However, to assure low enough noise floor in the forbidden
bands and above 1 GHz, signals are acquired at a distance of one meter or less. All
measurements are extrapolated to three meters using inverse scaling, unless
otherwise reported. Measurements taken at a closer distance are so marked.

9.0 Equipment List

1) Radiated Emissions Test
Equipment EMI Test Receiver Biconical Antenna Log Periodic Antenna
Registration No. EW-0014 EW-0571 EW-0446
Manufacturer R&S EMCO EMCO
Model No. ESVS30 3104C 3146
Calibration Date Jun 01, 2009 Nov 12, 2008 Apr 26, 2010
Calibration Due Date Jun 01, 2010 Aug 13, 2010 Oct 26, 2011

Equipment Spectrum Analyzer Double Ridged Guide Antenna
Registration No. EW-2188 EW-0194
Manufacturer AGILENTTECH EMCO
Model No. E4407B 3115
Calibration Date Dec 25, 2009 Dec 24, 2008
Calibration Due Date Dec 31, 2010 Jun 24, 2010

2) Bandedge Measurement
Equipment Spectrum Analyzer
Registration No. EW-2249
Manufacturer R&S
Model No. FSP30
Calibration Date Jun 25, 2009
Calibration Due Date Jun 25, 2010

Report No.: HK10051167-1
FCC ID: NMTSZ990
9

Document Created: 2010-08-19 09:57:38
Document Modified: 2010-08-19 09:57:38

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