CMU RF: Spectrum Measurement
1100.4903.12 4.51 E-10
Remote control
[SENSe:]SPECtrum:FREQuency:BANDwidth[:RESolution] <Bandwidth>
[SENSe:]SPECtrum:FREQuency:BWIDth[:RESolution] <Bandwidth>
Generator
Tx Aux Tx
The Generator softkey configures the RF signals generated. The generator settings
are general settings and therefore also provided in the Connection Control menu.
They are described in more detail in section Generator Settings (Connection Con-
trol – Generator) on p. 4.61 ff.
The RF Level hotkey is also used to switch the RF generator on and off.
If option R&S CMU-B95, Second RF Generator, is fitted, the Generator softkey
toggles between the primary RF signal (Tx) and the auxiliary RF signal (Aux Tx)
settings. The properties of the Aux Tx signal are also described in section
Generator Settings (Connection Control – Generator) on p. 4.61 ff
Marker
Display
The Marker/Display softkey positions up to 3 markers and a D-line in the test dia-
gram and displays their values.
If pressed once again, the selected Marker/Display softkey changes to the Dis-
play/Marker softkey, see below.
Markers are graphical tools for marking points on the measurement curve and
for numerical output of measured values. The measurement menu
Power provides a reference marker and two further markers which
permit to measure differences (delta marker 1 and 2).
The coordinates of the three markers are indicated in the format Ordi-
nate value (level)/abscissa value (time) in a parameter line above the
test diagram. The position of the reference marker is expressed in ab-
solute units (level in dBm and time in bits), the delta marker by abso-
lute or relative values (relative level in dB or time differences from the
reference marker).
D-line The D-line (display line) is a horizontal line that can be positioned to
mark and read out an arbitrary level in the test diagram.
Ref.
The hotkey Ref. R switches the reference marker on or off.
The reference marker is represented by the symbol
in the test diagram. The
marker position (abscissa) is determined in the input field Ref. Marker R. The
marker can be positioned to arbitrary frequency values. If its position is outside the
diagram area it will be invisible and its coordinates will be “- - - / <ab-
scissa_value>". The marker is switched off by default. The marker level is given by
the trace at the marker position.
The position of all markers can be varied using the rotary knob.
Remote control
No command, screen configuration only
Rel.
The Rel. 1 hotkey switches the delta marker 1 on or off.
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