DOWNLOAD JBL SB 200 (serv.man5) Service Manual ↓ Size: 1.2 MB | Pages: 56 in PDF or view online for FREE

Report No.: EM201200331-1                        Application No.:ZJ00016958                       Page 41 of 56 
 

 

 

1 68.5293 

-76.26 7.70 -68.56 

-36.00 

-32.56 

peak 

2 406.9287 

-85.84 18.24 -67.60 -36.00 -31.60 

peak 

 

Report No.: EM201200331-1                        Application No.:ZJ00016958                       Page 42 of 56 
 

 

 

1 4928.509 

-79.47  3.80  -75.67 -30.00 -45.67 

peak 

2 8410.112 

-81.19 13.26 -67.93 -30.00 -37.93 

peak 

3 10022.655 

-79.52  17.91  -61.61 -30.00 -31.61 

peak 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Report No.: EM201200331-1                        Application No.:ZJ00016958                       Page 43 of 56 
 

 

 
 
 

 

 

1 4848.740 

-79.19  3.63  -75.56 -30.00 -45.56 

peak 

2 9740.499 

-79.54 17.06 -62.48 -30.00 -32.48 

peak 

3 10312.984 

-78.97  17.35  -61.62 -30.00 -31.62 

peak 

 
 
 

Note: Above the test data is in the EUT operation mode. 
And above 1GHz, since the radiated emission of the EUT is too weak to be detected. 
 
Tx in standby Mode:  
since the spurious emission of the EUT is too weak to be detected.(≤-70dBm) 

 

 
 
 

 

 

Report No.: EM201200331-1                        Application No.:ZJ00016958                       Page 44 of 56 
 

 

Frequency range  

30 MHz to 1 GHz  

-57 dBm  

above 1 GHz to 12,75 GHz  

-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 theirarm 
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 8DOSK test data.