Cable TV Measurements (Option K20) R&S FSL
1300.2519.12 2.94 E-11
For the Quiet Line, set Line to 22.
That means, that the horizontal line 22 transmits no luminance information.
Select Normal as Sideband Postion from the list.
The Modulation Standard Options dialog box should now look as in Fig. 2-66.
11. Press the previous key twice to go back to the Channel Table dialog box.
12. Press the Save Changes softkey to save the channel table and the new modulation standard.
Fig. 2-66 Analog TV modulation standard PAL_BG_STEREO
Up to now, we successfully created the channel table EXAMPLE WIPFING, which contains a frequency
plan and the analog TV modulation standard PAL_BG_STEREO. Next, we will create the digital
modulation standard 64QAM_6900 based on the information of Table 2–14.
13. Press the Modulation Options softkey.
A list with one modulation standard PAL_BG_STEREO is displayed.
14. In the Modulation Options submenu, press the New softkey.
The Modulation Standard Options dialog box is displayed (see for example Fig. 2-66).
15. Enter the parameters for the modulation standard:
In the field Name, enter 64QAM_6900 as modulation standard name with the keypad.
Select Digital TV as Signal Type from the list.
This is done, because the desired QAM DVB–C signal is a digital TV signal.
Select QAM J.83/A (DVB–C Europe) as TV Standard.
By this means, all parameters below are set to their default values.
Set Constellation to 64QAM.
Set the Symbol Rate value to 6.9 MSyms/s.
This can be done by entering 6.9 via the keypad and confirming the input with the MHz key.
Set the Roll–off factor to 0.150.
Select Auto as Sideband Postion from the list.
The Modulation Standard Options dialog box should now look as in Fig. 2-67.
16. Press the previous key twice to go back to the Channel Table dialog box.
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