Analysis Report

FCC ID: ZBC24999

RF Exposure Info

Download: PDF

FCCID_3920827

INTERTEK TESTING SERVICES

RF Exposure
The equipment under test (EUT) is a wireless stereo earbud with Bluetooth
function operated at 2.4GHz band. The EUT is powered by DC 3.7V, 110mAh
new rechargeable battery which can be charged by USB port (DC 5V). The
USB port is only use for charging purpose. The EUT cannot operate when
charging. For more detail information pls. refer to the user manual.

Modulation Type: GFSK
Bluetooth Version: 4.1 BLE (single mode)
Antenna Type: Integral antenna.
Antenna Gain: 2.5 dBi Max
The nominal radiated output power (e.i.r.p) specified: 6.5dBm (Tolerance: +/- 3dB)
The nominal conducted output power specified: 4dBm (Tolerance: +/- 3dB)

According to the KDB 447498:

The maximum peak radiated emission for the EUT is 104.4dBμV/m at 3m
in the frequency 2440MHz.
The EIRP = [(FS*D) ^2 / 30] mW = 9.17dBm
which is within the production variation.

The minimum peak radiated emission for the EUT is 103.4dBμV/m at 3m
in the frequency 2402MHz.
The EIRP = [(FS*D) ^2 / 30] mW =8.17dBm
which is within the production variation.

The maximun conducted output power specified is 7dBm = 5.01mW
The source- based time-averaging conducted output power
= 5.01 * Duty factor mW (where Duty Factor≤1)
= 5.01 mW

The SAR Exclusion Threshold Level:
= 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz)
= 3.0 * 5 / sqrt (2.480) mW
= 9.53 mW

Since the source-based time-averaging conducted output power is well
below the SAR low threshold level, so the EUT is considered to comply
with SAR requirement without testing.

FCC ID: ZBC24999

Document Created: 2018-07-09 10:21:31
Document Modified: 2018-07-09 10:21:31

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