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piconet are synchronized to the frequency-hopping channel for the piconet. The frequency 

hopping sequence is determined by the master’s device address and the phase of the hopping 

sequence (the frequency to hop at a specific time) is determined by the master’s internal clock. 

Therefore, all slaves in a piconet must know the master’s device address and must synchronize 

their clocks with the master’s clock. 

Adaptive Frequency Hopping (AFH) was introduced in the Bluetooth specification to provide 

an effective way for a Bluetooth radio to counteract normal interference. AFH identifies “bad” 

channels, where either other wireless devices are interfering with the Bluetooth signal or the 

Bluetooth signal is interfering with another device. The AFH-enabled Bluetooth device will 

then communicate with other devices within its piconet to share detail of any identified band 

channels. The devices will then switch to alternative available “good” channels, away from 

the areas of interference, thus having no impact on the bandwidth used. 

This device was tested with an Bluetooth system receiver to check that the device maintained 

hopping synchronization, and the device complied with these requirements for CE153DR and 

EN 300 328 V1.7.1 4.5.3. 

Pseudorandom Frequency Hopping Sequence Table as below: 

Channel:08,24,40,56,40,56,72,09,01,09,33,41,33,41,65,73,53,69,06,22,04,20,36,52,38,46,70

,78,68,76,21,29,10,26,42,58,44,60,76,13,03,11,35,43,37,45,69,77,55,71,08,24,40,48,72,01,7

2,01,25,33,12,28,44,60,42,58,74,11,05,13,37,45 etc. 

The system receiver have input bandwidths that match the hopping channel bandwidths of  

their corresponding transmitter and shift frequencies in synchronization with the transmitted 

signals. 

This requirement does apply for equipment 

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30 MHz to 1 GHz  

-36 dBm  

-57 dBm  

above 1 GHz to 12,75 GHz  

-30 dBm  

-47 dBm  

1,8 GHz to 1,9 GHz  

5,15 GHz to 5,3 GHz  

-47 dBm  

-47 dBm  

EIRP emission test method as below  

1.  The EUT shall be performed at the highest power level at which the transmitter is 

intended to operate.and Interface cables, loads, and devices should be connected to at 
least one of each type of the interface ports of the EUT and, where practical, each cable 
shall be terminated in a device typical for its actual use. EUT shall be placed at the 1.5m 
support on the turntable. 

2.  The test antenna at a horizontal distance of 3 m .It shall be raised and lowered from 1m 

to 4m until a maximum signal level is detected by the measuring receiver. Then the 
turntable should be rotated through 360° in the horizontal plane, until the maximum 
signal level is detected by the measuring receiver. in both the vertical and the horizontal 
polarization. Record the reading level, antenna position, polarization and turntable 
position. 

3.  Remove the transmitter and replace it with a substitution antenna (the antenna should be 

half-wavelength for each frequency involved). The center of the substitution antenna 
should be approximately at the same location as the center of the transmitter. For 
frequencies of 80 MHz and above, the dipoles should have their arm lengths set for 
resonance at the frequency of test. Below 80 MHz, shortened arm lengths are 
recommended. For measurements above 1 000 MHz, a waveguide horn is 
recommended. The centre of this antenna should coincide with either the phase centre or 
volume centre. 

4.  Feed the substitution antenna at the transmitter end with a signal generator connected to 

the antenna by a cable. With the antennas at both ends vertically polarized, and with the 
signal generator tuned to a particular test frequency, raise and lower the test antenna to 
obtain a maximum reading at the spectrum analyzer. Adjust the level of the signal 
generator output until the previously recorded maximum reading for this set of 
conditions is obtained. This should be done carefully repeating the adjustment of the test 
antenna and generator output. 

 

EIRP(dBm) = Pg(dBm) – cable loss (dB) + antenna gain (dBd) 
where: 
Pg is the generator output power into the substitution antenna. 
 

Pre-test the 3 modulation to find 8DPSK is worse case, so only record 8DPSK test data. 

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4.7.3 TEST SETUP 
Below 1GHz 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Above 1GHz 

 

 

 

 

 

 

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4.7.4 TEST RESULTS 
1.  Lowest Channel: 2402MHz 
30M-1000MHz   Spurious Emissions Peak Measurement 
 

1 

45.9833 -78.75  21.19  -57.56 

-36.00 

-21.56 Vertical 

2 

50.5928 -78.26  19.63  -58.63 

-36.00 

-22.63 Vertical 

3 

52.9191 -78.56  19.24  -59.32 

-36.00 

-23.32 Vertical 

4 

60.2205 -77.56  18.01  -59.55 

-36.00 

-23.55 Vertical 

5 

127.8713 -83.88  18.72  -65.16 

-36.00 -29.16 Vertical 

6 

994.3963 -97.45  36.99  -60.46 

-36.00 -24.46 Vertical 

7 

57.8977 -85.56  18.37  -67.19 

-36.00 

-31.19 

Horizontal 

8 

106.8259 -83.53  19.66  -63.87 

-36.00 -27.87 

Horizontal 

9 

127.8713 -68.65  18.72  -49.93 

-36.00 -13.93 

Horizontal 

10 

138.3376 -75.53  19.10  -56.43 

-36.00 -20.43 

Horizontal 

11 

191.6416 -81.68  21.45  -60.23 

-36.00 -24.23 

Horizontal 

12 

359.6061 -87.59  27.44  -60.15 

-36.00 -24.15 

Horizontal 

 
1000MHz-12750MHz Spurious Emissions Peak Measurement 
 

1 

1078.645 -71.07  7.92 

-63.15 -30.00 -33.15 

Vertical

2 

1602.941 -74.29  12.06  -62.23 -30.00 -32.23 

Vertical

3 

2015.198 -71.01  16.64  -54.37 -30.00 -24.37 

Vertical

4 

7889.587 -78.17  20.62  -57.55 -30.00 -27.55 

Vertical

5 

8457.953 -77.81  21.18  -56.63 -30.00 -26.63 

Vertical

6 

10940.722 -78.98  24.23 

-54.75  -30.00 -24.75 

Vertical

7 

1078.645 -72.62  7.92 

-64.70 -30.00 -34.70 

Horizont

8 

1790.970 -71.96  14.14  -57.82 -30.00 -27.82 

Horizont

9 

2018.749 -69.52  16.69  -52.83 -30.00 -22.83 

Horizont

10 

9765.654 -78.89  23.45  -55.44 -30.00 -25.44 

Horizont

11 

10229.208 -78.53  23.39 

-55.14  -30.00 -25.14 

Horizont

12 

12750.000 -78.88  26.43 

-52.45  -30.00 -22.45 

Horizont