Agilent Technologies N9010A - Manual (Page 199)

Chapter 21 199
Bluetooth Measurement Application
Low Energy Measurements
Description Specifications Supplemental Information
Carrier Frequency Drift This measurement is a Transmit
Analysis measurement and is in
conformance with Bluetooth RF
test specification
LE.RF-PHY.TS/0.7d2.6.2.4.
Packet Type Reference type
Payload PRBS9, BS00, BSFF, BS0F,
BS55
Synchronization Preamble
Trigger External, RF Burst, Periodic
Timer, Free Run, Video
RF input level range
a
+30 dBm to –70 dBm
Measurement range ±100 kHz (nominal)
Measurement Accuracy
b
±100 Hz + tfa
c
(nominal)
a. When the input signal level is lower than –40 dBm, the analyzer’s preamp should be turned on and the
attenuator set to 0 dB.
b. Example, using 1 ppm as frequency reference accuracy of the analyzer, at frequency of 2.402 GHz,
frequency accuracy would be in the range of ±(2.402 GHz
× 1 ppm) Hz ± 100 Hz = ±2402 Hz ± 100 Hz
= ±2502 Hz.
c. tfa = transmitter frequency × frequency reference accuracy.
Description Specifications Supplemental Information
LE In-band Emission This measurement is an LE
ub-band emission measurement
and is in conformance with
Bluetooth RF test specification
LE.RF-PHY.TS/0.7d2.6.2.2.
Packet Type Reference type
Payload PRBS9, BS00, BSFF, BS0F,
BS55
Synchronization None
Trigger External, RF Burst, Periodic
Timer, Free Run, Video
Measurement Accuracy
a
Dominated by the variance of
measurements
b
a. The accuracy is for absolute power measured at 2.0 MHz offset and other offsets (offset =2 MHz
× K ,
K = 2,…,29).
b. The measurement at these offsets is usually the measurement of noise-like signals and therefore has
considerable variance. For example, with 100 ms sweeping time, the standard deviation of the measure-
ment is about 0.5 dB. In comparison, the computed uncertainties of the measurement for the case with
CW interference is only
± 0.29 dB.