Defining The Frequency And Span - R&S ESR Series User Manual

®
R&S ESR

5.3.1 Defining the Frequency and Span

The frequency and span settings define the scope of the signal to be analyzed. The
settings are available in the [FREQ] and [SPAN] menus.
Span settings and signal tracking are only available for IF Analysis (firmware applica-
tion R&S ESR-K56).
Receiver
Stepsize...................................................................................................................... 179
Start / Stop
IF Span
Full Span..................................................................................................................... 180
Last
Signal
Receiver Frequency
Defines the receiver frequency.
The tuning frequency has to be set to at least twice the IF bandwidth.
When the tuning frequency is lower than twice the IF bandwidth, the IF bandwidth is
automatically reduced so that this condition is met again.
Remote command:
[SENSe:]FREQuency:CENTer
Stepsize
Opens a submenu to define the receiver frequency step size.
By default, the frequency step size is coupled to the receiver frequency. Alternatively,
you can define a custom step size.
"Auto Coarse"
"Auto Fine"
"Stepsize Man-
ual"
"Stepsize =
Freq"
User Manual 1175.7068.02 ─ 12
Frequency.................................................................................................... 179
Frequency................................................................................................ 180
Manual...........................................................................................................180
Span.................................................................................................................... 180
Track................................................................................................................ 180
The step size is coupled to the receiver frequency.
When you change the frequency with the rotary knob, the R&S ESR
increases or decreases the 4th digit of the receiver frequency.
When you change the frequency with the cursor keys, the R&S ESR
increases or decreases the 2nd digit of the receiver frequency.
The step size is coupled to the receiver frequency.
When you change the frequency with the rotary knob, the R&S ESR
increases or decreases the 7th digit of the receiver frequency.
When you change the frequency with the cursor keys, the R&S ESR
increases or decreases the 5th digit of the receiver frequency.
The step size is a fixed custom value.
When you change the frequency with the rotary knob, the R&S ESR
increases or decreases the frequency by 1 % of the manual step size.
When you change the frequency with the cursor keys, the R&S ESR
increases or decreases the frequency by the manual step size.
The step size is equal to the current receiver frequency.
Defining a step size equal to the receiver frequency is useful during
measurements of the harmonic content of a signal. Each change of
the receiver frequency with the cursor key or the rotary knob selects
the next harmonic.
Common Measurement Settings
on page 665
Receiver Mode
179