Introduction to Bluetooth Measurements (K8)
R&S
®
FSV-K8
12
Operating Manual 1176.7610.02 ─ 02
access code 72 bits
4 bits preamble
64 bits sync word
4 bits trailer
54 bits header
240 / 1496 / 2744
bits payload*)
*) During EUT evaluation the payload contains certain bit sequences: PRBS9 (Pseudo
Random Bit Sequence) or 11110000 or 10101010.
The sync word is transmitted as the major part of the access code. For this purpose,
the LAP (lower address part) of the BD address is expanded to 64 bit by adding the
BCH code and baker.
sync word 64 bits
BCH code 34 bits
LAP 24 bits
Barker 6 bits
The LAP (lower address part) of the BD address serves as a basis for the sync word.
BD – address 48 bits
NAP 16 bits
UAP 8 bits
LAP 24 bits
In case of EDR packets the payload is divided into 6 other sections:
DPSK
guard 5µs
SYNC
payload header
user payload 0–
2723Symb
CRC code
trailer
2.2 Supported Tests
The Bluetooth Measurements Option supports measurements according to the Blue-
tooth RF Test Specification (Bluetooth SIG) , Revision 2.0.E.3, Mar 2005, on the
R&S
FSV. The following tests are currently implemented according to this specifica-
tion:
●
Output Power
●
TX Output Spectrum – Adjacent Channel Power
●
Modulation Characteristics
●
Initial Carrier Frequency Tolerance (ICFT)
●
Carrier Frequency Drift
●
EDR Relative Transmit Power
●
EDR Carrier Frequency Stability and Modulation Accuracy
●
EDR Differential Phase Encoding
●
EDR In–band Spurious Emissions
Supported Tests