R&S FSL Cable TV Measurements (Option K20)
1300.2519.12 4.229 E-11
RF Atten Manual
Opens an edit dialog box to enter the attenuation. For details see also "Attenuation adjustment"
on page 4.211.
Signal Lvl Offset
For details refer to the Ref Level Offset softkey in the amplitude menu of the base unit.
Grid Abs/Rel
For details refer to the Grid Abs / Rel softkey in the amplitude menu of the base unit.
Unit
Opens a list containing all allowed units to select the appropriate unit. These units are used for
scaling diagrams or input/output of parameters and limits.
The variety of the absolute units depends on the selected measurement, as relative unit dB is
used.
The units are selected according to the state of the Range Log and Range Linear softkeys. For
voltage units, the input impedance (Input 50 D / 75 D softkey) is used for the conversion.
Remote: CALC:UNIT:POW DBM
Input 50 D / 75 D
For details refer to the Input 50 D / 75 D softkey in the amplitude menu of the base unit.
Typically, cable TV networks have an impedance of 75 L (set the softkey to 75 L). For precise
(level) measurements an adapter of the RAZ type (= 25 L in series to the input impedance of the
instrument) should always be used.
Softkeys of the trace menu (Cable TV Analyzer mode)
In the Cable TV Analyzer mode, 4 traces are available. In the measurements listed below, averaging is
not carried out over the measurement points (trace) but over the values listed in the result table.
Therefore instead of a trace mode a result mode is selected via the Result Mode softkey.
• Carriers
• C/N, CSO, CTB
• Vision Modulation
• Hum
• Overview
• Modulation Errors
• Channel Power
• Tilt
Apart from these differences, the trace menu works as described in "Setting Traces – TRACE Key" on
page 4.39.
To Next Page
Loading...
