FMUSER INTERNATIONAL GROUP INC.
广州市汉婷生物技术开发有限公司
21
/
57
6MHz/8MHz.
User can refer to the formula as below:
RF_BW=symb_rate*(1+roll_off)
RF_BW
：
Frequency bandwidth
symb_rate
：
Symbol rate
roll_off
：
Roll off factor
（
according to EN300429/ITU-T J.83A
，
the roll off factor is 0.15
）
As the formula shown, user should set the symbol rate no
exceeding 5.214Msps/6.956Msps to ensure the bandwidth for
each channel no more than 6MHz/8MHz.
4.2.2.6 RF Level (Out Power/General attenuation setting)
After entering the submenu by pressing ENTER key, user can
set
the
general
attenuation
by
moving
the
UP/DOWN/LEFT/RIGHT key and then repressing ENTER to
confirm.
The total level attenuation range is from 0~31.5db in 0.5db step.
4.2.3 Channel Setting
User can select “Channel setting” in the main interface and then
press ENETR to set the channel. The display show as below:
►
1.6.1 Out Power
+00.0 dBm
