R&S FSL Cable TV Measurements (Option K20)
1300.2519.12 2.49 E-11
• Color System: The color information of the video signal is transmitted according to either the
PAL or NTSC or SECAM standard. The values you can choose depend on the selected TV
standard. Not all combinations are allowed!
• Bar Line: The Vision Modulation measurement needs a special test signal, containing a peak
w
hite value. You must specify the type and the number of the horizontal line that contains the
peak white value.
• Quiet Line: Some measurements need a horizontal line with no video information in it. You
must specify the number of this horizontal line here. For further information see also Example:
Creating a channel table.
• Sideband Position: Is the signal in normal position or inverted?
Note: In the dialog boxes, set the parameters always from top to bottom, since all parameters depend
on the parameters above them. Otherwise your input might be rejected, e.g. if it specifies an
unusual TV standard.
Analog TV test setup
This section describes the setup used for the analog TV measurement examples. All analog
measurement examples are performed in the Cable TV Analyzer mode.
1. Press the MENU key to display the cable TV measurements main menu.
2. Press the Channel Setup softkey.
3. In the Channel Tables dialog box, select channel table <none>.
4. Press the Activate softkey.
The TV standard is automatically set to the default analog TV modulation standard, which has the
following parameters (see also Analog TV settings).
Signal Type = Analog TV
TV Standard = B/G
Sound System = FM 5.5 / FM 5.742
What kind of sound carrier(s) are used.
Group Delay = General
This setting has no effect on the measurements in this firmware release.
Color System = PAL
Bar Line = 18
Type = CCIR 17
Where is the "white reference'' and of what kind is it? The Vision Modulation measurement
demands correct settings!
Quiet Line = 22
Which horizontal line shall be used for "Quiet Line'' based CNR / CSO measurement. This line
shall have no video information!
Sideband Position = Normal
Only change this setting if you have inverted sidebands.
As long as you measure without a channel table, the Cable TV Measurements option expects a
signal with these parameters. If your signal does not fit, some measurements may fail.
To Next Page
Loading...
