Test Report UMTS Annex

FCC ID: XPYTOBYL201

Test Report

Download: PDF
FCCID_2644982

Test Report Annex
Methods of Measurements
Test Report Reference: Annex to MDE_UBLOX_1502_FCCa


on


TOBY-L201 Data Module

FCC ID XPYTOBYL201
IC: 8595A-TOBYL201
Date:                May 29, 2015




 Test Laboratory:
 7Layers AG
 Borsigstrasse 11
 40880 Ratingen
 Germany

 Note:
 The following test results relate only to the devices specified in this document. This report shall not be reproduced in parts
 without the written approval of the test laboratory.

 7 layers AG                                        Aufsichtsratsvorsitzender                    Registergericht registered in:
 Borsigstrasse 11                                   Chairman of the Supervisory Board:            Düsseldorf, HRB 44096
 40880 Ratingen, Germany                            Peter Mertel                                  USt-IdNr  VAT No.:
 Phone: +49 (0) 2102 749 0                          Vorstand Board:                              DE 203159652
 Fax: +49 (0) 2102 749 350                          Dr. H. Ansorge                                TAX No. 147/5869/0385
 www.7Layers.com                                                                                  A Bureau Veritas Group Company


TEST REPORT REFERENCE:                                Annex to MDE_UBLOX_1502_FCCa

Description of Methods of Measurements
___________________________________
___________________________________

FCC Part 22
______________

RF Power Output
______________

Standard      FCC Part 22, Subpart H

The test was performed according to: FCC §2.1046

Test Description (conducted measurement procedure)

1) The EUT was coupled to a Spectrum Analyser and a Digital Communication Tester
through a Power Divider. Refer to chapter "Setup Drawings".
2) The total insertion losses for signal path 1 and signal path 2 were measured. The values
were used to correct the readings from the Spectrum Analyser and the Digital
Communication Tester.
3) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Channel (Frequency): please refer to the detailed results
4) The transmitted power of the EUT was recorded by using a spectrum analyser.


Test Description (radiated measurement procedure)

1) The EUT was placed inside an anechoic chamber. Refer to chapter "Setup Drawings". The
EUT was coupled to a Digital Communication Tester which was located outside the chamber
via a small signalling antenna.
2) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
3) A substitution procedure is used so that the readings from the spectrum analyser are
corrected and represent directly the equivalent radiated power (related to a lamda/2
dipole).
4) The output power was measured in both vertical and horizontal antenna polarisation
during the call is established on the lowest channel, mid channel and on the highest
channel. To find the worst case power all orientations (X, Y, Z) of the EUT have been
measured.
5) The test procedure according to TIA-603-C-2004 has been considered.


Test Requirements / Limits

§2.1046 Measurements Required: RF Power Output
(a) For transmitters other than single sideband, independent sideband and controlled carrier
radiotelephone, power output shall be measured at the RF output terminals when the
transmitter is adjusted in accordance with the tune-up procedure to give the values of



                                                                                  page 2 of 17


TEST REPORT REFERENCE:                                Annex to MDE_UBLOX_1502_FCCa
current and voltage on the circuit elements specified in § 2.1033(c)(8). The electrical
characteristics of the output terminals when this test is made shall be stated.
§22.913 Effective radiated power limits
(a)(2) Maximum ERP. … The ERP of mobile transmitters and auxiliary test transmitters
must not exceed 7 Watts.


____________________________

Emission and Occupied Bandwidth
____________________________

Standard      FCC Part 22, Subpart H

The test was performed according to: FCC §2.1049


Test Description

1) The EUT was coupled to a Spectrum Analyser and a Digital Communication Tester
through a Power Divider. Refer to chapter "Setup Drawings".
2) The total insertion losses for signal path 1 and signal path 2 were measured. The values
were used to correct the readings from the Spectrum Analyser and the Digital
Communication Tester.
3) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
4) Important Analyser Settings:
- Resolution Bandwidth: >1% of the manufacturer’s stated occupied bandwidth
5) The maximum spectral level of the modulated signal was recorded as the reference.
6) The emission bandwidth is measured as follows:
the two furthest frequencies above and below the frequency of the maximum reference level
where the spectrum is –26 dB down have to be found.
7) The occupied bandwidth (99% Bandwidth) is measured as follows:
the occupied bandwidth, that is the frequency bandwidth such that, below its lower and
above its upper frequency limits, the mean powers are each equal to 0.5 percent of the total
mean power.


Test Requirements / Limits

§ 2.1049 Measurements required: Occupied bandwidth

The occupied bandwidth, that is the frequency bandwidth such that, below its lower and
above its upper frequency limits, the mean powers radiated are each equal to 0.5 percent of
the total mean power radiated by a given emission shall be measured under the following
conditions (as applicable):

(h) Transmitters employing digital modulation techniques - when modulated by an input
signal such that its amplitude and symbol rate represent the maximum rated conditions
under which the equipment will be operated. The signal shall be applied through any filter
networks, pseudo-random generators or other devices required in normal service.
Additionally, the occupied bandwidth shall be shown for operation with any devices used for
modifying the spectrum when such devices are optional at the discretion of the user.


                                                                                  page 3 of 17


TEST REPORT REFERENCE:                               Annex to MDE_UBLOX_1502_FCCa



_________________________________

Spurious emissions at antenna terminals
_________________________________

Standard      FCC Part 22, Subpart H

The test was performed according to FCC §2.1051


Test Description

1) The EUT was coupled to a Spectrum Analyser and a Digital Communication Tester
through a Power Divider. Refer to chapter "Setup Drawings".
2) The total insertion losses for signal path 1 and signal path 2 were measured. The values
were used to correct the readings from the Spectrum Analyser and the Digital
Communication Tester.
3) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
4) Important Analyser Settings
- [Resolution Bandwidth]:
a) [>=1% of wanted signal bandwidth] in the Span of 1 MHz directly below and above the
PCS-Band,
b) otherwise [100 kHz] (or [1 MHz] for accelerated sweep times)
c) [reduced resolution bandwidth] in case the curve of the analyser IF-Filter or the wanted
EUT signal leads to an exceeding of the limit, in this case a correction factor was used
- Sweep Time: depending on the transmitting signal, the span and the resolution bandwidth
5) The spurious emissions peaks were measured in the frequency range from 9 kHz to 10
GHz (up to the 10th harmonic) during the call was established


Test Requirements / Limits

§ 2.1051 Spurious emissions at antenna terminals

The radio frequency voltage or power generated within the equipment and appearing on a
spurious frequency shall be checked at the equipment output terminals when properly
loaded with a suitable artificial antenna. Curves or equivalent data shall show the
magnitude of each harmonic and other spurious emission that can be detected when the
equipment is operated under the conditions specified in Sec. 2.1049 as appropriate. The
magnitude of spurious emissions which are attenuated more than 20 dB below the
permissible value need not be specified.

§ 2.1057 Frequency spectrum to be investigated.

(a) In all of the measurements set forth in Secs. 2.1051 and 2.1053, the spectrum shall be
investigated from the lowest radio frequency signal generated in the equipment, without
going below 9 kHz, up to at least the frequency shown below:
(1) If the equipment operates below 10 GHz: to the tenth harmonic of the highest
fundamental frequency or to 40 GHz, whichever is lower.



                                                                                 page 4 of 17


TEST REPORT REFERENCE:                                 Annex to MDE_UBLOX_1502_FCCa
(b) Particular attention should be paid to harmonics and subharmonics of the carrier
frequency as well as to those frequencies removed from the carrier by multiples of the
oscillator frequency. Radiation at the frequencies of multiplier stages should also be
checked.
(c) The amplitude of spurious emissions which are attenuated more than 20 dB below the
permissible value need not be reported.
(d) Unless otherwise specified, measurements above 40 GHz shall be performed using a
minimum resolution bandwidth of 1 MHz.

§ 22.917 Emission limitations for cellular equipment

(a) The power of any emission outside of the authorized operating frequency ranges must
be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log(P) dB.
Remark of the test laboratory: This is calculated to be -13 dBm.
(b) Compliance with these rules is based on the use of measurement instrumentation
employing a resolution bandwidth of 100 kHz or greater. In the 1 MHz bands immediately
outside and adjacent to the frequency block a resolution bandwidth of at least one percent
of the emission bandwidth of the fundamental emission of the transmitter may be
employed. A narrower resolution bandwidth is permitted in all cases to improve
measurement accuracy provided the measured power is integrated over the full required
measurement bandwidth (i.e. 100 kHz or 1 percent of emission bandwidth, as specified).
The emission bandwidth is defined as the width of the signal between two points, one below
the carrier center frequency and one above the carrier center frequency, outside of which all
emissions are attenuated at least 26 dB below the transmitter power.
(c) Licensees in this service may establish an alternative out of band emission limit to be
used at specified band edge(s) in specified geographical areas [...].
(d) If any emission from a transmitter operating in this service results in interference to
users of another radio service, the FCC may require a greater attenuation of that emission
than specified in this section.

For reporting only spurious emission levels reaching to the 20dB margin to limit were noted.


_______________________________

Field strength of spurious radiation
_______________________________

Standard      FCC Part 22, Subpart H

The test was performed according to: FCC §2.1053


Test Description

1) The EUT was placed inside an anechoic chamber. Refer to chapter "Setup Drawings". The
EUT was coupled to a Digital Communication Tester which was located outside the chamber
via a small signalling antenna.
2) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
3) A pre-calibration procedure is used so that the readings from the spectrum analyser are
corrected and represent directly the equivalent radiated power (related to a lamda/2
dipole).


                                                                                   page 5 of 17


TEST REPORT REFERENCE:                                 Annex to MDE_UBLOX_1502_FCCa
4) All spurious radiation measurements were made with spectrum analyser and the
appropriate calibrated antennas for the frequency range of 30 MHz to 10 GHz (up to the
10th harmonic of the transmit frequency). The frequency range from 9 kHz to 30 MHz has
been examined during the conducted spurious emission measurements.
5) Important Analyser Settings
- [Resolution Bandwidth / Video Bandwidth]:
a) [3 kHz / 10 kHz] in the Span of 1 MHz directly below and above the Band,
b) [10 kHz / 30 kHz] in case the curve of the analyser IF-Filter leads to an exceeding of the
limit, in this case a worst case correction factor of 20 dB (1 MHz -> 10 kHz) was used
c) [1 MHz / 3 MHz] otherwise
- Sweep Time: depending on the transmitting signal, the span and the resolution bandwidth
6) The spurious emissions peaks were measured in both vertical and horizontal antenna
polarization during the call is established on the lowest channel, mid channel and on the
highest channel. To find the worst case peaks all orientations (X, Y, Z) of the EUT have been
measured.
7) After this initial test, a final test according to TIA-603-C 2.2.12 Unwanted Emissions is
performed on signals which are identified as being close to the limit. For any emissions
found to be within 10 dB of the limit, a specific signal substitution measurement is
performed at the frequency of the emission to determine the exact e.i.r.p. value.



Test Requirements / Limits

§ 2.1053 Measurements required: Field strength of spurious radiation.

Measurements shall be made to detect spurious emissions that may be radiated directly
from the cabinet, control circuits, power leads, or intermediate circuit elements under
normal conditions of installation and operation. Curves or equivalent data shall be supplied
showing the magnitude of each harmonic and other spurious emission. For this test, single
sideband, independent sideband, and controlled carrier transmitters shall be modulated
under the conditions specified in paragraph (c) of Sec. 2.1049, as appropriate. For
equipment operating on frequencies below 890 MHz, an open field test is normally required,
with the measuring instrument antenna located in the far-field at all test frequencies. In the
event it is either impractical or impossible to make open field measurements (e.g. a
broadcast transmitter installed in a building) measurements will be accepted of the
equipment as installed. Such measurements must be accompanied by a description of the
site where the measurements were made showing the location of any possible source of
reflections which might distort the field strength measurements. Information submitted shall
include the relative radiated power of each spurious emission with reference to the rated
power output of the transmitter, assuming all emissions are radiated from halfwave dipole
antennas.
(b) The measurements specified in paragraph (a) of this section shall be made for the
following equipment:
(2) All equipment operating on frequencies higher than 25 MHz.

§ 2.1057 Frequency spectrum to be investigated.

(a) In all of the measurements set forth in Secs. 2.1051 and 2.1053, the spectrum shall be
investigated from the lowest radio frequency signal generated in the equipment, without
going below 9 kHz, up to at least the frequency shown below:
(1) If the equipment operates below 10 GHz: to the tenth harmonic of the highest
fundamental frequency or to 40 GHz, whichever is lower.
(b) Particular attention should be paid to harmonics and subharmonics of the carrier
frequency as well as to those frequencies removed from the carrier by multiples of the



                                                                                   page 6 of 17


TEST REPORT REFERENCE:                                 Annex to MDE_UBLOX_1502_FCCa
oscillator frequency. Radiation at the frequencies of multiplier stages should also be
checked.
(c) The amplitude of spurious emissions which are attenuated more than 20 dB below the
permissible value need not be reported.
(d) Unless otherwise specified, measurements above 40 GHz shall be performed using a
minimum resolution bandwidth of 1 MHz.

§ 22.917 Emission limitations for cellular equipment

(a) The power of any emission outside of the authorized operating frequency ranges must
be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log(P) dB.
This is calculated to be -13 dBm (effective radiated power) which corresponds to 84.6
dBµV/m (field strength) in a distance of 3 m.

(b) Compliance with these rules is based on the use of measurement instrumentation
employing a resolution bandwidth of 100 kHz or greater. In the 1 MHz bands immediately
outside and adjacent to the frequency block a resolution bandwidth of at least one percent
of the emission bandwidth of the fundamental emission of the transmitter may be
employed. A narrower resolution bandwidth is permitted in all cases to improve
measurement accuracy provided the measured power is integrated over the full required
measurement bandwidth (i.e. 100 kHz or 1 percent of emission bandwidth, as specified).
The emission bandwidth is defined as the width of the signal between two points, one below
the carrier center frequency and one above the carrier center frequency, outside of which all
emissions are attenuated at least 26 dB below the transmitter power.
(c) Licensees in this service may establish an alternative out of band emission limit to be
used at specified band edge(s) in specified geographical areas [...].
(d) If any emission from a transmitter operating in this service results in interference to
users of another radio service, the FCC may require a greater attenuation of that emission
than specified in this section.

For reporting only spurious emission levels reaching to the 20dB margin to limit were noted.


_______________

Frequency stability
_______________

Standard      FCC Part 22, Subpart H

The test was performed according to FCC §2.1055


Test Description

1) The EUT was placed inside a temperature chamber.
2) The EUT was coupled to a Digital Communication Tester. Refer to chapter "Setup
Drawings".
3) The climatic chamber was cycled down/up to a certain temperature, starting with the EUT
minimum temperature.
4) After the temperature was stabilized the EUT was switched on and a call was established
on a Traffic Channel between the EUT and the Digital Communication Tester.
Important Settings:
- Output Power: Maximum
- Mid Channel



                                                                                   page 7 of 17


TEST REPORT REFERENCE:                                          Annex to MDE_UBLOX_1502_FCCa
5) The frequency error of the EUT was recorded by using an internal measurement function
of the Digital Communication Tester immediately after the call was established, five minutes
after the call was established and ten minutes after the call was established.
6) This measurement procedure was performed for temperature variation from –30°C to
+50°C in increments of 10°C, if not otherwise stated in the detailed results.
When the EUT did not operate at certain temperature levels, these measurements were left
out.


Test Requirements / Limits

§2.1055 Measurements required: Frequency stability

(a) The frequency stability shall be measured with variation of ambient temperature as
follows:
(1) From -30° to +50° centigrade for all equipment except that specified in paragraphs (a)
(2) and (3) of this section.
(b) Frequency measurements shall be made at the extremes of the specified temperature
range and at intervals of not more than 10° centigrade through the range. A period of time
sufficient to stabilize all of the components of the oscillator circuit at each temperature level
shall be allowed prior to frequency measurement. The short term transient effects on the
frequency of the transmitter due to keying (except for broadcast transmitters) and any
heating element cycling normally occurring at each ambient temperature level also shall be
shown. Only the portion or portions of the transmitter containing the frequency determining
and stabilizing circuitry need be subjected to the temperature variation test.
(d) The frequency stability shall be measured with variation of primary supply voltage as
follows:
(1) Vary primary supply voltage from 85 to 115 percent of the nominal value for other than
hand carried battery equipment.
(2) For hand carried, battery powered equipment, reduce primary supply voltage to the
battery operating end point which shall be specified by the manufacturer.
(3) The supply voltage shall be measured at the input to the cable normally provided with
the equipment, or at the power supply terminals if cables are not normally provided. Effects
on frequency of transmitter keying (except for broadcast transmitters) and any heating
element cycling at the nominal supply voltage and at each extreme also shall be shown.


§22.355 Frequency tolerance

…the carrier frequency of each transmitter in the Public Mobile Service must be maintained
within the tolerances given in table C-1 of this section.

Table C-1.- Frequency Tolerance for Transmitters in the Public Mobile Services
Frequency range (MHz) Base, fixed (ppm)        Mobile up to 3 watts (ppm)     Mobile above 3 watts (ppm)
25 to 50                          20.0                       20.0                            50.0
50 to 450                         5.0                        5.0                             50.0
450 to 512                        2.5                        5.0                             5.0
821 to 896                        1.5                        2.5                             2.5
928 to 929                        5.0                        n/a                             n/a
929 to 960                        1.5                        n/a                             n/a
2110 to 2220                      10.0                       n/a                             n/a
For the mid channel (836.6 MHz) the frequency tolerance is 2.5 ppm (2091.5 Hz).




                                                                                                 page 8 of 17


TEST REPORT REFERENCE:                                     Annex to MDE_UBLOX_1502_FCCa

__________________

Band edge compliance
__________________

Standard      FCC Part 22, Subpart H

The test was performed according to: FCC §22.913


Test Description

1) The EUT was coupled to a Spectrum Analyser and a Digital Communication Tester
through a Power Divider. Refer to chapter "Setup Drawings".
2) The total insertion losses for signal path 1 and signal path 2 were measured. The values
were used to correct the readings from the Spectrum Analyser and the Digital
Communication Tester.
3) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
4) Important Analyser Settings:
- Resolution Bandwidth = Video Bandwidth: >1% of the manufacturer’s stated occupied
bandwidth


Test Requirements / Limits

§ 22.917 Emission limitations for cellular equipment

Refer to chapter "Field strength of spurious radiation".




                                                                                  page 9 of 17


TEST REPORT REFERENCE:                                Annex to MDE_UBLOX_1502_FCCa

FCC Part 24

______________

RF Power Output
______________

Standard: FCC Part 24, Subpart E

The test was performed according to: FCC §2.1046


Test Description (conducted measurement procedure)

1) The EUT was coupled to a Spectrum Analyser and a Digital Communication Tester
through a Power Divider. Refer to chapter "Setup Drawings".
2) The total insertion losses for signal path 1 and signal path 2 were measured. The values
were used to correct the readings from the Spectrum Analyser and the Digital
Communication Tester.
3) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Channel (Frequency): please refer to the detailed results
4) The transmitted power of the EUT was recorded by using a spectrum analyser.


Test Description (radiated measurement procedure)

1) The EUT was placed inside an anechoic chamber. Refer to chapter "Setup Drawings". The
EUT was coupled to a Digital Communication Tester which was located outside the chamber
via a small signalling antenna.
2) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
3) A substitution procedure is used so that the readings from the spectrum analyser are
corrected and represent directly the equivalent radiated power (related to a lamda/2
dipole).
4) The output power was measured in both vertical and horizontal antenna polarisation
during the call is established on the lowest channel, mid channel and on the highest
channel. To find the worst case power all orientations (X, Y, Z) of the EUT have been
measured.
5) The test procedure according to TIA-603-C-2004 has been considered.


Test Requirements / Limits

§2.1046 Measurements Required: RF Power Output
(a) For transmitters other than single sideband, independent sideband and controlled carrier
radiotelephone, power output shall be measured at the RF output terminals when the
transmitter is adjusted in accordance with the tune-up procedure to give the values of
current and voltage on the circuit elements specified in § 2.1033(c)(8). The electrical
characteristics of the output terminals when this test is made shall be stated.
§24.232 Power and antenna height limits


                                                                                 page 10 of 17


TEST REPORT REFERENCE:                                Annex to MDE_UBLOX_1502_FCCa
(c) Mobile/portable stations are limited to 2 watts EIRP peak power and the equipment must
employ means to limit the power to the minimum necessary for successful communications.
(e) Peak transmit power must be measured over any interval of continuous transmission
using instrumentation calibrated in terms of an rms-equivalent voltage. The measurement
results shall be properly adjusted for any instrument limitations, such as detector response
times, limited resolution bandwidth capability when compared to the emission bandwidth,
sensitivity, etc., so as to obtain a true peak measurement for the emission in question over
the full bandwidth of the channel.


____________________________

Emission and Occupied Bandwidth
____________________________

Standard: FCC Part 24, Subpart E

The test was performed according to: FCC §2.1049


Test Description

1) The EUT was coupled to a Spectrum Analyser and a Digital Communication Tester
through a Power Divider. Refer to chapter "Setup Drawings".
2) The total insertion losses for signal path 1 and signal path 2 were measured. The values
were used to correct the readings from the Spectrum Analyser and the Digital
Communication Tester.
3) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
4) Important Analyser Settings:
- Resolution Bandwidth: >1% of the manufacturer’s stated occupied bandwidth
5) The maximum spectral level of the modulated signal was recorded as the reference.
6) The emission bandwidth is measured as follows:
the two furthest frequencies above and below the frequency of the maximum reference level
where the spectrum is –26 dB down have to be found.
7) The occupied bandwidth (99% Bandwidth) is measured as follows:
the occupied bandwidth, that is the frequency bandwidth such that, below its lower and
above its upper frequency limits, the mean powers are each equal to 0.5 percent of the total
mean power.


Test Requirements / Limits

§ 2.1049 Measurements required: Occupied bandwidth

The occupied bandwidth, that is the frequency bandwidth such that, below its lower and
above its upper frequency limits, the mean powers radiated are each equal to 0.5 percent of
the total mean power radiated by a given emission shall be measured under the following
conditions (as applicable):

(h) Transmitters employing digital modulation techniques - when modulated by an input
signal such that its amplitude and symbol rate represent the maximum rated conditions
under which the equipment will be operated. The signal shall be applied through any filter


                                                                                 page 11 of 17


TEST REPORT REFERENCE:                                Annex to MDE_UBLOX_1502_FCCa
networks, pseudo-random generators or other devices required in normal service.
Additionally, the occupied bandwidth shall be shown for operation with any devices used for
modifying the spectrum when such devices are optional at the discretion of the user.


_________________________________

Spurious emissions at antenna terminals
_________________________________

Standard: FCC Part 24, Subpart E

The test was performed according to FCC §2.1051


Test Description

1) The EUT was coupled to a Spectrum Analyser and a Digital Communication Tester
through a Power Divider. Refer to chapter "Setup Drawings".
2) The total insertion losses for signal path 1 and signal path 2 were measured. The values
were used to correct the readings from the Spectrum Analyser and the Digital
Communication Tester.
3) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
4) Important Analyser Settings
- [Resolution Bandwidth]:
a) [>=1% of wanted signal bandwidth] in the Span of 1 MHz directly below and above the
Band,
b) otherwise [1 MHz]
c) [reduced resolution bandwidth] in case the curve of the analyser IF-Filter or the wanted
EUT signal leads to an exceeding of the limit, in this case a correction factor was used
- Sweep Time: depending on the transmitting signal, the span and the resolution bandwidth
5) The spurious emissions peaks were measured in the frequency range from 9 kHz to 20
GHz (up to the 10th harmonic) during the call was established


Test Requirements / Limits

§ 2.1051 Spurious emissions at antenna terminals

The radio frequency voltage or power generated within the equipment and appearing on a
spurious frequency shall be checked at the equipment output terminals when properly
loaded with a suitable artificial antenna. Curves or equivalent data shall show the
magnitude of each harmonic and other spurious emission that can be detected when the
equipment is operated under the conditions specified in Sec. 2.1049 as appropriate. The
magnitude of spurious emissions which are attenuated more than 20 dB below the
permissible value need not be specified.

§ 2.1057 Frequency spectrum to be investigated.

(a) In all of the measurements set forth in Secs. 2.1051 and 2.1053, the spectrum shall be
investigated from the lowest radio frequency signal generated in the equipment, without
going below 9 kHz, up to at least the frequency shown below:


                                                                                page 12 of 17


TEST REPORT REFERENCE:                                Annex to MDE_UBLOX_1502_FCCa
(1) If the equipment operates below 10 GHz: to the tenth harmonic of the highest
fundamental frequency or to 40 GHz, whichever is lower.
(b) Particular attention should be paid to harmonics and subharmonics of the carrier
frequency as well as to those frequencies removed from the carrier by multiples of the
oscillator frequency. Radiation at the frequencies of multiplier stages should also be
checked.
(c) The amplitude of spurious emissions which are attenuated more than 20 dB below the
permissible value need not be reported.
(d) Unless otherwise specified, measurements above 40 GHz shall be performed using a
minimum resolution bandwidth of 1 MHz.

§ 24.238 Emission limitations for Broadband PCS equipment

(a) The power of any emission outside of the authorized operating frequency ranges must
be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log(P) dB.
Remark of the test laboratory: This is calculated to be -13 dBm.
(b) Compliance with these rules is based on the use of measurement instrumentation
employing a resolution bandwidth of 1 MHz or greater. However, in the 1 MHz bands
immediately outside and adjacent to the frequency block a resolution bandwidth of at least
one percent of the emission bandwidth of the fundamental emission of the transmitter may
be employed. A narrower resolution bandwidth is permitted in all cases to improve
measurement accuracy provided the measured power is integrated over the full required
measurement bandwidth (i.e. 1 MHz or 1 percent of emission bandwidth, as specified). The
emission bandwidth is defined as the width of the signal between two points, one below the
carrier center frequency and one above the carrier center frequency, outside of which all
emissions are attenuated at least 26 dB below the transmitter power.
(c) Licensees in this service may establish an alternative out of band emission limit to be
used at specified band edge(s) in specified geographical areas [...].
(d) If any emission from a transmitter operating in this service results in interference to
users of another radio service, the FCC may require a greater attenuation of that emission
than specified in this section.

For reporting only spurious emission levels reaching to the 20dB margin to limit were noted.


_______________________________

Field strength of spurious radiation
_______________________________

Standard: FCC Part 24, Subpart E

The test was performed according to: FCC §2.1053


Test Description

1) The EUT was placed inside an anechoic chamber. Refer to chapter "Setup Drawings". The
EUT was coupled to a Digital Communication Tester which was located outside the chamber
via a small signalling antenna.
2) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results



                                                                                 page 13 of 17


TEST REPORT REFERENCE:                                 Annex to MDE_UBLOX_1502_FCCa
3) A pre-calibration procedure is used so that the readings from the spectrum analyser are
corrected and represent directly the equivalent radiated power (related to a lamda/2
dipole).
4) All spurious radiation measurements were made with spectrum analyser and the
appropriate calibrated antennas for the frequency range of 30 MHz to 20 GHz (up to the
10th harmonic of the transmit frequency). The frequency range from 9 kHz to 30 MHz has
been examined during the conducted spurious emission measurements.
5) Important Analyser Settings
- [Resolution Bandwidth / Video Bandwidth]:
a) [3 kHz / 10 kHz] in the Span of 1 MHz directly below and above the Band,
b) [10 kHz / 30 kHz] in case the curve of the analyser IF-Filter leads to an exceeding of the
limit, in this case a worst case correction factor of 20 dB (1 MHz -> 10 kHz) was used
c) [1 MHz / 3 MHz] otherwise
- Sweep Time: depending on the transmitting signal, the span and the resolution bandwidth
6) The spurious emissions peaks were measured in both vertical and horizontal antenna
polarisation during the call is established on the lowest channel, mid channel and on the
highest channel. To find the worst case peaks all orientations (X, Y, Z) of the EUT have been
measured.
7) After this initial test, a final test according to TIA-603-C 2.2.12 Unwanted Emissions is
performed on signals which are identified as being close to the limit. For any emissions
found to be within 10 dB of the limit, a specific signal substitution measurement is
performed at the frequency of the emission to determine the exact e.i.r.p. value.


Test Requirements / Limits

§ 2.1053 Measurements required: Field strength of spurious radiation.

Measurements shall be made to detect spurious emissions that may be radiated directly
from the cabinet, control circuits, power leads, or intermediate circuit elements under
normal conditions of installation and operation. Curves or equivalent data shall be supplied
showing the magnitude of each harmonic and other spurious emission. For this test, single
sideband, independent sideband, and controlled carrier transmitters shall be modulated
under the conditions specified in paragraph (c) of Sec. 2.1049, as appropriate. For
equipment operating on frequencies below 890 MHz, an open field test is normally required,
with the measuring instrument antenna located in the far-field at all test frequencies. In the
event it is either impractical or impossible to make open field measurements (e.g. a
broadcast transmitter installed in a building) measurements will be accepted of the
equipment as installed. Such measurements must be accompanied by a description of the
site where the measurements were made showing the location of any possible source of
reflections which might distort the field strength measurements. Information submitted shall
include the relative radiated power of each spurious emission with reference to the rated
power output of the transmitter, assuming all emissions are radiated from halfwave dipole
antennas.
(b) The measurements specified in paragraph (a) of this section shall be made for the
following equipment:
(2) All equipment operating on frequencies higher than 25 MHz.

§ 2.1057 Frequency spectrum to be investigated.

(a) In all of the measurements set forth in Secs. 2.1051 and 2.1053, the spectrum shall be
investigated from the lowest radio frequency signal generated in the equipment, without
going below 9 kHz, up to at least the frequency shown below:
(1) If the equipment operates below 10 GHz: to the tenth harmonic of the highest
fundamental frequency or to 40 GHz, whichever is lower.



                                                                                  page 14 of 17


TEST REPORT REFERENCE:                                Annex to MDE_UBLOX_1502_FCCa
(b) Particular attention should be paid to harmonics and subharmonics of the carrier
frequency as well as to those frequencies removed from the carrier by multiples of the
oscillator frequency. Radiation at the frequencies of multiplier stages should also be
checked.
(c) The amplitude of spurious emissions which are attenuated more than 20 dB below the
permissible value need not be reported.
(d) Unless otherwise specified, measurements above 40 GHz shall be performed using a
minimum resolution bandwidth of 1 MHz.

§ 24.238 Emission limitations for Broadband PCS equipment

(a) The power of any emission outside of the authorized operating frequency ranges must
be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log(P) dB.
This is calculated to be -13 dBm (effective radiated power) which corresponds to 84.6
dBµV/m (field strength) in a distance of 3 m.

(b) Compliance with these rules is based on the use of measurement instrumentation
employing a resolution bandwidth of 1 MHz or greater. However, in the 1 MHz bands
immediately outside and adjacent to the frequency block a resolution bandwidth of at least
one percent of the emission bandwidth of the fundamental emission of the transmitter may
be employed. A narrower resolution bandwidth is permitted in all cases to improve
measurement accuracy provided the measured power is integrated over the full required
measurement bandwidth (i.e. 1 MHz or 1 percent of emission bandwidth, as specified). The
emission bandwidth is defined as the width of the signal between two points, one below the
carrier center frequency and one above the carrier center frequency, outside of which all
emissions are attenuated at least 26 dB below the transmitter power.
(c) Licensees in this service may establish an alternative out of band emission limit to be
used at specified band edge(s) in specified geographical areas [...].
(d) If any emission from a transmitter operating in this service results in interference to
users of another radio service, the FCC may require a greater attenuation of that emission
than specified in this section.

For reporting only spurious emission levels reaching to the 20dB margin to limit were noted.


_______________

Frequency stability
_______________

Standard: FCC Part 24, Subpart E

The test was performed according to FCC §2.1055


Test Description

1) The EUT was placed inside a temperature chamber.
2) The EUT was coupled to a Digital Communication Tester. Refer to chapter "Setup
Drawings".
3) The climatic chamber was cycled down/up to a certain temperature, starting with the EUT
minimum temperature.
4) After the temperature was stabilized the EUT was switched on and a call was established
on a Traffic Channel between the EUT and the Digital Communication Tester.
Important Settings:
- Output Power: Maximum


                                                                                 page 15 of 17


TEST REPORT REFERENCE:                                   Annex to MDE_UBLOX_1502_FCCa
- Mid Channel
5) The frequency error of the EUT was recorded by using an internal measurement function
of the Digital Communication Tester immediately after the call was established, five minutes
after the call was established and ten minutes after the call was established.
6) This measurement procedure was performed for temperature variation from –30°C to
+50°C in increments of 10°C, if not otherwise stated in the detailed results.
When the EUT did not operate at certain temperature levels, these measurements were left
out.


Test Requirements / Limits

§2.1055 Measurements required: Frequency stability

(a) The frequency stability shall be measured with variation of ambient temperature as
follows:
(1) From -30° to +50° centigrade for all equipment except that specified in paragraphs
(a) (2) and (3) of this section.
(b) Frequency measurements shall be made at the extremes of the specified temperature
range and at intervals of not more than 10° centigrade through the range. A period of time
sufficient to stabilize all of the components of the oscillator circuit at each temperature level
shall be allowed prior to frequency measurement. The short term transient effects on the
frequency of the transmitter due to keying (except for broadcast transmitters) and any
heating element cycling normally occurring at each ambient temperature level also shall be
shown. Only the portion or portions of the transmitter containing the frequency determining
and stabilizing circuitry need be subjected to the temperature variation test.
(d) The frequency stability shall be measured with variation of primary supply voltage as
follows:
(1) Vary primary supply voltage from 85 to 115 percent of the nominal value for other than
hand carried battery equipment.
(2) For hand carried, battery powered equipment, reduce primary supply voltage to the
battery operating end point which shall be specified by the manufacturer.
(3) The supply voltage shall be measured at the input to the cable normally provided with
the equipment, or at the power supply terminals if cables are not normally provided. Effects
on frequency of transmitter keying (except for broadcast transmitters) and any heating
element cycling at the nominal supply voltage and at each extreme also shall be shown.


§24.235 Frequency stability

The frequency stability shall be sufficient to ensure that the fundamental emission stays
within the authorized frequency block.

7Layers interpretation of limit:

To ensure that the frequency stability shall be sufficient to ensure that the fundamental
emission stays within the authorized frequency block following limit was used:

+/- 2.5 ppm = 4700 Hz for a frequency of 1880.0 MHz

in accordance with FCC Part 22, Subpart H, §22.355, table C-1: Frequency tolerance for the
carrier frequency of mobile transmitters in the Public Mobile Service in the frequency range
821 to 896 MHz.




                                                                                     page 16 of 17


TEST REPORT REFERENCE:                                     Annex to MDE_UBLOX_1502_FCCa

__________________

Band edge compliance
__________________

Standard: FCC Part 24, Subpart E

The test was performed according to: FCC §24.238


Test Description

1) The EUT was coupled to a Spectrum Analyser and a Digital Communication Tester
through a Power Divider. Refer to chapter "Setup Drawings".
2) The total insertion losses for signal path 1 and signal path 2 were measured. The values
were used to correct the readings from the Spectrum Analyser and the Digital
Communication Tester.
3) A call was established on a Traffic Channel between the EUT and the Digital
Communication Tester.
Important Settings:
- Output Power: Maximum
- Channel: please refer to the detailed results
4) Important Analyser Settings:
- Resolution Bandwidth = Video Bandwidth: >1% of the manufacturer’s stated occupied
bandwidth


Test Requirements / Limits

§ 24.238 Effective radiated power limits

Refer to chapter "Field strength of spurious radiation".




                                                                                 page 17 of 17



Document Created: 2015-06-11 18:40:00
Document Modified: 2015-06-11 18:40:00

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