Rohde & Schwarz R&S FSL3 - Performing a Measurement Using a Channel Table

Cable TV Measurements (Option K20) R&S FSL
1300.2519.12 2.98 E-11
In practice you would now continue to adapt the modulation settings in depth, i.e. the sound system the
t
est lines and so on. For our example we will stop here.
For further details on analog TV modulation parameters please refer to section Analog TV settings.
Performing a Measurement Using a Channel Table
The use of a channel table can speed up most of the routine measurement tasks. This section will
demonstrate how to perform measurements using channel tables.
Test setup:
 No special test setup is required. You do not need to supply a signal. We do not need meaningful
measurement results here, since the focus is on the operation only.
Procedure:
1. Press the MENU key.
2. Press the Channel Setup softkey.
3. You should now see a list of Channel Tables, including the example channel table
RS_EXAMPLE_WIPFING, that was used in section Example: Creating a channel table. If you have
deleted it, you must first restore it as shown in section Example: Restoring the default channel
tables.
4. Move the cursor to RS_EXAMPLE_WIPFING and press the Activate softkey.
The Cable TV Measurements option automatically switched to the first channel in the Channel
Table.
5. Press the MEAS key.
6. Press the Analog TV softkey.
7. Press the Carriers softkey.
The resulting measurement is displayed (see Fig. 2-70).
The Cable TV Measurements option configures the measurement according to the information
stored in the channel table:
 It automatically sets the span to measure the channel with number 21. The channel borders are
marked with red vertical lines.
 It also knows how large the ideal intercarrier frequency offset (vision carrier to audio carriers)
should be. This information is needed to calculate the deviation from the ideal value. The ideal
sound carrier positions are also marked via red vertical lines.
 The measurement principle is chosen according to the modulation standard given for the current
measurement channel. For example: The powers of a NICAM and a FM sound carrier must be
measured in different ways.
 The display tells you the actual RF frequency and what modulation standard the channel
contains.