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Report No.: EM201200703-4 

                       

Application No.:

ZJ00022653   

                  

Page 33 of 53

 

 

 

 

≥1MHz 

4.4.2 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 >= 1% of the span (set 100 kHz). VBW >= RBW , Span = enough to 
catch the trace. Sweep = auto; Detector Function = Peak. Trace = Max,hold. 
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 
 
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) 

1.002MHz 

≥1MHz Pass 

Middle Channels  

(channel 39 and channel 40)

1.002MHz 

≥1MHz Pass 

Upper Channels  

(channel 77 and channel 78)

1.002MHz 

≥1MHz Pass 

 
 

8DPSK 

Lower Channels  

(channel 0 and channel 1) 

1.008MHz 

≥1MHz Pass 

Middle Channels  

(channel 39 and channel 40)

1.008MHz 

≥1MHz Pass 

Upper Channels  

(channel 77 and channel 78)

1.008MHz 

≥1MHz Pass 

 

        
Antenna  
 
EUT  

  

Receiver 

Report No.: EM201200703-4 

                       

Application No.:

ZJ00022653   

                  

Page 34 of 53

 

 

 

For GFSK 

Lowest Channels:   

 

Middle Channels:   

 

Report No.: EM201200703-4 

                       

Application No.:

ZJ00022653   

                  

Page 35 of 53

 

 

 

Highest Channels: 

 

For 8DPSK 

Lowest Channels: 

 

Report No.: EM201200703-4 

                       

Application No.:

ZJ00022653   

                  

Page 36 of 53

 

 

 

Middle Channels: 

 

Highest Channels: