R&S FSW Series, Руководство пользователя

Страница: 453 / 1450

Common Measurement Settings
R&S
®
FSW
453 User Manual 1173.9411.02 ─ 43
Remote command:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RLEVel
on page 1040
Shifting the Display (Offset) ← Reference Level
Defines an arithmetic level offset. This offset is added to the measured level. In some
result displays, the scaling of the y-axis is changed accordingly.
Define an offset if the signal is attenuated or amplified before it is fed into the
R&S
FSW so the application shows correct power results. All displayed power level
results are shifted by this value.
The setting range is ±200 dB in 0.01 dB steps.
Note, however, that the internal reference level (used to adjust the hardware settings to
the expected signal) ignores any "Reference Level Offset". Thus, it is important to keep
in mind the actual power level the R&S
FSW must handle. Do not rely on the displayed
reference level (internal reference level = displayed reference level - offset).
For details, see "Reference level offset" on page 449.
Remote command:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RLEVel:OFFSet
on page 1040
Unit ← Reference Level
The R&S FSW measures the signal voltage at the RF input.
In the default state, the level is displayed at a power level of 1 mW (= dBm). Via the
known input impedance (50 Ω or 75 Ω, see "Impedance" on page 368), conversion to
other units is possible.
The following units are available and directly convertible:
●
dBm
●
dBmV
●
dBμV
●
dBμA
●
dBpW
●
Volt
●
Ampere
●
Watt
Additional units available only for installed R&S FSW-K54 (EMI measurements) option:
●
dBmV/MHz (normalized to 1 MHz)
●
dBµV/MHz (normalized to 1 MHz)
●
dBµV/mMHz (normalized to 1 MHz)
(only available for active transducers with dBµV/m values)
●
dBµA/MHz (normalized to 1 MHz)
●
dBµA/mMHz (normalized to 1 MHz)
(only available for active transducers with dBµA/m values)
●
dBpW/MHz (normalized to 1 MHz)
Remote command:
INPut<ip>:IMPedance
on page 1071
CALCulate<n>:UNIT:POWer
on page 1040
Amplitude and Vertical Axis Configuration