UM-B-074
DA1468x Range Extender Daughterboard
User Manual
Revision 1.1
17-Apr-2018
CFR0012
44 of 60
© 2018 Dialog Semiconductor
15.2 BLE FCC Measurements
The measurements described below are in the context of pre-test FCC measurements. All
measurements reported here use the following parameters:
Operating Conditions:
●
T = 21 °C
●
VBAT = 3 V
Test Configuration:
In order to comply with 15.247 FCC limits all tests are performed with the following settings:
●
DCDC_V18_VOLTAGE = 0x16. Default value (0x5000008C).
●
R73 =
16.5 Ω. Sets the VCC2 level to 1200 mV.
●
RF_TX_PWR_REG = 2 (0x500020C0). Sets the DA14680/681 TX output power to -2 dBm.
Equipment:
●
Signal analyzer Rohde & Schwarz FSV Spectrum analyzer
Tools:
●
CLI programmer
●
SDK RF Tools Command Line Interface Application for RF Test Commands
Test procedure:
Measurement method according to point 9.1.1 of Guidance for Performing Compliance:
Measurements on Digital Transmission Systems (DTS) operating under 15.247.
Measurements:
●
Maximum output power (section
15.2.1
)
●
Emission limitations conducted (harmonic level) (section
15.2.2
)
●
Band edge emissions (conducted) (section
15.2.3
)
●
Emission limitations radiated (restricted band edge) (section
15.2.4
)
○
RA 2.31 GHz to 2.39 GHz
○
RB 2.4835 GHz to 2.5 GHz
The values mentioned below are for FCC compliance with Digital Transmission Systems (DTS)
operating under 15.247.
Table 23: FCC 15.247 Compliance Pre-Tests Performed
Section
Subclause
Test Description
Verdict
Emission limitations conducted (transmitter)
15.247
(a)
6 dB Bandwidth
PASS
15.247
(b)
Maximum output power and antenna gain
PASS
15.247
(d)
Emission limitations conducted (transmitter)
PASS
15.247
(d)
Band edge emissions conducted (transmitter)
PASS
15.247
(e)
Power spectral density (conducted)
PASS
Emission limitations radiated (transmitter)
15.247
(d)
Frequency range 30 MHz to 1000 MHz
n.a.
Frequency range 1 GHz to 25 GHz
n.a.
RA 2.31 GHz to 2.39 GHz
PASS
RB 2.4835 GHz to 2.5 GHz
PASS
