Agilent Technologies N9010A - Manual (Page 195)

Chapter 21 195
Bluetooth Measurement Application
Basic Rate Measurements
Description Specifications Supplemental Information
Carrier Frequency Drift This measurement is a Transmit
Analysis measurement and
supports average and peak power
in conformance with Bluetooth
RF test specification
2.1.E.0.5.1.11.
Packet Type DH1, DH3, DH5, HV3
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
Adjacent Channel Power This measurement is an Adjacent
Channel Power measurement and
is in conformance with Bluetooth
RF test specification
2.1.E.0.5.1.8.
Packet Type DH1, DH3, DH5, HV3
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 = K MHz,
K = 3,…,78).
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.