Rohde & Schwarz FSV3000, Руководство пользователя

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Common measurement settings
R&S
®
FSVA3000/ R&S
®
FSV3000
456 User Manual 1178.8520.02 ─ 08
Amplitude settings determine how the R&S FSV/A must process or display the expec-
ted input power levels.
For an active external frontend, the amplitude settings refer to the RF input at the
external frontend, not the levels at the RF input of the R&S
FSV/A. Electronic attenua-
tion, preamplifier, and noise cancellation are not available. Input coupling is always DC.
Impedance is always 50
Ω
. See "External Frontend Connection State" on page 430.
The remote commands required to define these settings are described in Chap-
ter 12.7.4.1, "Amplitude settings" , on page 1115.
Reference Level .......................................................................................................... 456
└ Shifting the Display (Offset) .......................................................................... 457
└ Unit ................................................................................................................457
└ Setting the Reference Level Automatically (Auto Level) ...............................458
RF Attenuation ............................................................................................................ 458
└ Attenuation Mode / Value ..............................................................................458
Using Electronic Attenuation ....................................................................................... 459
Input Settings .............................................................................................................. 459
└ Preamplifier ...................................................................................................459
Noise Cancellation ...................................................................................................... 460
Reference Level
Defines the expected maximum reference level. Signal levels above this value are pos-
sibly not measured correctly. Signals above the reference level are indicated by an "IF
Overload" status display.
Amplitude and vertical axis configuration