Test Report LTE 3

FCC ID: 2AC88-GLMM18A02

Test Report

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FCCID_4181093

5.4. Spurious Emission at Antenna Terminal

5.4.1.Test Standard
FCC: CFR Part 2.1051, CFR Part 27.53, CFR Part 90.669
5.4.2.Test Limit
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 FCC
2.1049 as appropriate. The magnitude of spurious emissions which are attenuated
more than 20 dB below the permissible value need not be specified.
(a) Out of band emissions. 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. For all power levels +30dBm to 0dBm, this
becomes a constant specification of -13dBm.

FCC 27.53 (g) For operations in the 600 MHz band and the 698-746 MHz band, the
power of any emission outside a licensee's frequency band(s) of operation shall be
attenuated below the transmitter power (P) within the licensed band(s) of operation,
measured in watts, by at least 43 + 10 log (P) dB. Compliance with this provision is
based on the use of measurement instrumentation employing a resolution bandwidth
of 100 kilohertz or greater. However, in the 100 kilohertz bands immediately outside
and adjacent to a licensee's frequency block, a resolution bandwidth of at least 30
kHz may be employed

FCC 90.669
(a) Out-of- annels
included in an EA license and to spectrum adjacent to interior channels used by
incumbent licensees. The emission limits are as follows:
(1) For any frequency removed from the EA licensee's frequency block by up to and
including 37.5 kHz, the power of any emission shall be attenuated below the
transmitter power (P) in watts by at least 116 Log10(f/6.1) decibels or 50 + 10
Log10(P) decibels or 80 decibels, whichever is the lesser attenuation, where f is the
frequency removed from the center of the outer channel in the block in kilohertz and
where f is greater than 12.5 kHz.
(2) For any frequency removed from the EA licensee's frequency block greater than
37.5 kHz, the power of any emission shall be attenuated below the transmitter power
(P) in watts by at least 43 + 10Log10(P) decibels or 80 decibels, whichever is the
lesser attenuation, where f is the frequency removed from the center of the outer
channel in the block in kilohertz and where f is greater than 37.5 kHz.
The power of any emission shall be attenuated below the mean output power
P (dBW) by at least 43 + 10 log10(p), measured in a 100 kHz bandwidth for
frequencies less than or equal to 1 GHz, and in a 1 MHz bandwidth for frequencies
greater than 1 GHz.

5.4.3.Test Procedure
1. Connect the equipment as shown in the above diagram.
2. Set the spectrum analyzer to measure peak hold with the required settings.
3. Set the signal generator to a known output power and record the path loss in dB
(LOSS) for frequencies up to the tenth harmonic of the
LOSS = Generator Output Power (dBm) Analyzer reading (dBm).
4. Replace the signal generator with the EUT.
5. Adjust the settings of the Wideband Radio Communication Tester (CMW500) to
set the EUT to its maximum power at the required channel.
6. Set the spectrum analyzer to measure peak hold with the required settings.
Offset the spectrum analyzer reference level by the path loss measured above.
7. Measure and record all spurious emissions up to the tenth harmonic of the
carrier frequency.
8. Measurements are to be performed with the EUT set to the low, middle and high
channel of each frequency band.
9. If necessary steps 6 and 7 may be performed with the spectrum analyzer set to
average detector.
(Note: Step 3 above is performed prior to testing and LOSS is recorded by test
software. Steps 2, 6, and 7 above are performed with test software.)
5.4.4.Test Data

Document Created: 2019-01-29 13:29:57
Document Modified: 2019-01-29 13:29:57

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