DOWNLOAD Harman Kardon ESQUIRE (serv.man3) Service Manual ↓ Size: 1.67 MB | Pages: 58 in PDF or view online for FREE

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EM201300418-1 

                       

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Middle Channels: 

 

Highest Channels:   

 

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4.5.1 LIMITS 
EN 300 328 clause 4.3.4.3.2 
4.5.2 TEST PROCEDURE 
Remove the antenna from the EUT and then connect a low attenuation cable from the antenna port 
to the spectrum. 
Set the spectrum analyzer: RBW = 100 kHz. VBW ≥ 100 kHz. Sweep = auto; Detector Function = 
Peak. Trace = Max hold. 
Allow the trace to stabilize.  It may prove necessary to break the span up to sections. in order to 
clearly show all of the hopping frequencies.  The limit is specified in one of the subparagraphs of 
this Section. 
Set the spectrum analyzer: start frequency = 2400MHz. stop frequency = 2483.5MHz. Submit the 
test result graph. 
4.5.3 TEST SETUP 

 
 
 
 
 

 
4.5.4 TEST RESULTS 

 

 

 

        
Antenna  
 
EUT  

  

 

Receiver 

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Total channels are 79 channels 

 

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EN 300 328 V1.7.1 4.5.3: A medium access protocol is a mechanism designed to facilitate 

spectrum sharing with other devices in a wireless network. 

A medium access protocol shall be implemented by the equipment. 

On the basis of the latest list of harmonized standards under the R&TTE Directive 1999/5/EC 

which was published on October 23, 2012 in Official Journal C321 contains the following 

(mandatory) guidance: The  efficiency  of  the  various  sharing  mechanisms  can  be  assessed  

using  the  appropriate  clauses  of  EN  300328 version  1.8.1.” 

In addition, this requirement does not apply for equipment with a maximum declared RF 

Output power level of less than 10 dBm e.i.r.p. or for equipment when operating in a mode 

where the RF Output power is less than 10 dBm e.i.r.p. 

Adaptive Frequency Hopping equipment is allowed to operate in a non-adaptive mode 

providing it complies with the requirements applicable to non-adaptive frequency hopping 

equipment. 

Adaptive Frequency Hopping equipment is allowed to have Short Control Signalling 

Transmissions (e.g. ACK/NACK signals, etc.) without sensing the frequency for the presence 

of other signals. See clause 4.3.1.6.3. 

Adaptive Frequency Hopping (AFH) equipment uses a Detect And Avoid (DAA) mechanism 

which allows an equipment to adapt to its environment by identifying frequencies that are 

being used by other equipment. 

Adaptive Frequency Hopping systems shall implement either of the DAA mechanisms 

provided in clauses 4.3.1.6.1 or 4.3.1.6.2. 

This transmitter device is frequency hopping device, and complies with EN 300 328 4.3.5 

standard. 

This device uses Bluetooth radio which operates in 2400~2483.5MHz band. Bluetooth uses a 

radio technology called frequency-hopping spread spectrum, which chops up the data being 

sent and transmits chunks of it on up to 79 bands(1MHz each; centered from 2402~2480MHz) 

in the range 2400~2483.5MHz. The transmitter switches hop frequencies 1600 times per 

second to assure a high degree of data security. All Bluetooth devices participating in a given