R&S ESR Series, Руководство пользователя

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Receiver Mode
R&S
®
ESR
179 User Manual 1175.7068.02 ─ 12
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 Frequency .................................................................................................... 179
Stepsize ...................................................................................................................... 179
Start / Stop Frequency ................................................................................................ 180
IF Span Manual ...........................................................................................................180
Full Span ..................................................................................................................... 180
Last Span .................................................................................................................... 180
Signal Track ................................................................................................................ 180
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
on page 665
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" 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.
"Auto Fine" 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.
"Stepsize Man-
ual" 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.
"Stepsize =
Freq" 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