DOWNLOAD JBL ON BEAT RUMBLE (serv.man4) Service Manual ↓ Size: 1.05 MB | Pages: 53 in PDF or view online for FREE

Report No.: EM201200813-4

                       

Application No.:

ZJ00024740

                  

Page 13 of 53

 

 

 

 

AC Power 
25 ACnom 

2400.39 

2481.62 

FL>2400.0   FH< 2483.5 

-20 

ACmin 2400.47 

2481.54 

ACmax 2400.42 2481.57 

+55 

ACmin 2400.39 

2481.61 

ACmax 2400.47 2481.59 

FL: Lowest frequency of the power envelope, it is the frequency furthest below the frequency 
of maximum power where the output power drops below the level of –80 dBm/Hz spectral 
power density (-30 dBm if measured in a 100 kHz bandwidth) eirp. 
FH: Highest frequency of the power envelope, it is the frequency furthest above the frequency 
of maximum power where the output power drops below the level of –80 dBm/Hz spectral 
power density (-30 dBm if measured in a 100 kHz bandwidth) eirp. 
NOTE: ACnom =AC230V/50Hz;ACmin = AC207V/50Hz; ACmax= AC253V/50Hz 
TEST RESULTS: The unit does meet the requirements. 

 
       The test slots as below： 

 

Report No.: EM201200813-4

                       

Application No.:

ZJ00024740

                  

Page 14 of 53

 

 

 

For GFSK 

Low Frequency 

: 

 

High Frequency 

 

 

Report No.: EM201200813-4

                       

Application No.:

ZJ00024740

                  

Page 15 of 53

 

 

 

For 8DPSK 

Low Frequency  

 

 

High Frequency 

 

Report No.: EM201200813-4

                       

Application No.:

ZJ00024740

                  

Page 16 of 53

 

 

 

The maximum dwell time shall be 0,4 s. 

4.3.2 TEST PROCEDURE 
Remove the antenna from the EUT and then connect a low attenuation cable from the antenna port to the 
spectrum. 
Set spectrum analyzer span = 0. centered on a hopping channel; 
Set RBW = 1MHz and VBW ≥ 1MHz. Sweep = as necessary to capture the entire dwell time per hopping 
channel. Detector Function = Peak. Trace = Max hold; 
Use the marker-delta function to determine the dwell time.  If this value varies with different modes of 
operation (e.g.. data rate. modulation format. etc.). repeat this test for each variation.  The limit is specified 
in one of the subparagraphs of this Section.  Submit this plot(s). An oscilloscope may be used instead of a 
spectrum analyzer. 
 
Pre-test the 3 modulation to find GFSK and 8DPSK is worse case, so only record GFSK and 8DPSK test 
data. 
4.3.3 TEST SETUP 

 
 
 
 
 
 

 
4.3.4 TEST RESULTS 
The test period: T= 0.4 Second/Channel x 79 Channel = 31.6 s 
1. 

Channel 0: 

2.402GHz 

 
DH1 time slot =0.387 (ms) * (1600/(2*79)) * 31.6 = 123.840 ms   
DH3 time slot =1.651 (ms) * (1600/(4*79)) * 31.6 = 264.160 ms    
DH5 time slot =2.918 (ms) * (1600/(6*79)) * 31.6 = 311.253 ms 

 

2DH1 time slot =0.411 (ms) * (1600/(2*79)) * 31.6 = 131.520 ms 
2DH3 time slot =1.659 (ms) * (1600/(4*79)) * 31.6 = 265.440 ms 
2DH5 time slot =1.707 (ms) * (1600/(6*79)) * 31.6 = 182.080 ms 

 

3DH1 time slot =0.409 (ms) * (1600/(2*79)) * 31.6 = 130.880 ms 
3DH3 time slot =1.673 (ms) * (1600/(4*79)) * 31.6 = 267.680 ms 
3DH5 time slot= 2.921 (ms) * (1600/(6*79)) * 31.6 = 311.573 ms 

 

: 2.441GHz 

 

DH1 time slot = 0.392 (ms) * (1600/(2*79)) * 31.6 = 125.440 ms 
DH3 time slot = 1.656 (ms) * (1600/(4*79)) * 31.6 = 264.960 ms 
DH5 time slot = 2.920 (ms) * (1600/(6*79)) * 31.6 = 311.467 ms 

 

2DH1 time slot = 0.409 (ms) * (1600/(2*79)) * 31.6 = 130.880 ms 

        
Antenna  
 
EUT  

  

Receiver