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Report No.: EM201300221-5                     Application No.:  ZJ00028648                         Page 13 of 68 

 

FCC ID: 

APISPARK  

GFSK  Lowest Channel： 

 

 

GFSK Middle Channel： 

 

Report No.: EM201300221-5                     Application No.:  ZJ00028648                         Page 14 of 68 

 

FCC ID: 

APISPARK  

GFSK Highest Channel： 

 

8DPSK Lowest Channel： 

 

Report No.: EM201300221-5                     Application No.:  ZJ00028648                         Page 15 of 68 

 

FCC ID: 

APISPARK  

8DPSK Middle Channel： 

 

8DPSK Highest Channel： 

 

 

Report No.: EM201300221-5                     Application No.:  ZJ00028648                         Page 16 of 68 

 

FCC ID: 

APISPARK  

 

Frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel 
carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the 
hopping channel, whichever is greater, provided the systems operate with an output power no 
greater than 125 mW.  

1.  Remove the antenna from the EUT and then connect a low RF cable from the antenna 

port to the spectrum. 

2.  Set the spectrum analyzer: RBW >= 1% of the span (set 100 kHz). VBW >= RBW , 

Span = 6MHz. Sweep = auto; Detector Function = Peak. Trace = Max,hold. 

3.  Allow the trace to stabilize. Use the marker-delta function to determine the separation 

between the peaks of the adjacent channels.  The limit is specified in one of the 
subparagraphs of this Section.  Submit this plot. 

Remark： 

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

 

 
 

 

 
 

GFSK 

 

Lower Channels  

(channel 0 and channel 1) 

1.008MHz 0.767 

Pass 

Middle Channels  

(channel 39 and channel 40)

1.008MHz 0.757 

Pass 

Upper Channels  

(channel 77 and channel 78)

1.008MHz 0.757 

Pass 

 
 

8DPSK 

Lower Channels  

(channel 0 and channel 1) 

1.020MHz 0.877 

Pass 

Middle Channels  

(channel 39 and channel 40)

1.008MHz 0.880 

Pass 

Upper Channels  

(channel 77 and channel 78)

1.008MHz 0.883 

Pass 

 

Result plot as follows: 

EUT 

Spectrum analyzer