Instrument Function
R&S
®
SMF100A
218
Operating Manual 1167.2319.02 ─ 12
"Time"
Power versus time measurement (envelope power measurement as a
function of time, NRP trace mode). The R&S
SMF samples power
over a time interval and assigns the internal power values that have
been determined to a number of points.
This mode also provides gated measurement and pulse data analy-
sis, e.g. with a connected R&S
NRP-Z81, and the corresponding
graphical display "Gate View" and "Pulse Data View".
Remote command:
Min - Power Analysis
Sets the minimum frequency/power/time of the measurement.
The available frequency/power range depends on the frequency/power range of the
generator and the used power sensor.
The range for the start time is -1s to +1s. Value 0 defines the trigger point. By choosing
a negative time value, the trace can be shifted in the diagram.
It is possible, that the measurement cannot be performed over the complete time range
because of limitations due to sensor settings. In this case, the R&S
SMF generates an
error message.
If you change this value for a finished single measurement, only the scaling of the x-
axis changes. This way, you can zoom the trace. However, for subsequent measure-
ments, the measurement range is changed according to the new setting.
If you change this value during a continuous measurement, only the scaling of the x-
axis changes for measurement cycles that have been triggered before the change. For
subsequent measurement cycles, the measurement range changes according to the
new setting.
Remote command:
:SENSe[:POWer]:SWEep:FREQuency:STARt
:SENSe[:POWer]:SWEep:POWer:STARt
:SENSe[:POWer]:SWEep:TIME:STARt
Max - Power Analysis
Sets the maximum frequency/power/time of the measurement.
The available frequency/power range depends on the frequency/power range of the
instrument and the used power sensor.
The range for the stop time is 0 s to 2 s. Value 0 defines the trigger point.
It is possible, that the measurement cannot be performed over the complete time range
because of limitations due to sensor settings. In this case, an error message is output.
If you change this value for a finished single measurement, only the scaling of the x-
axis changes. This way, you can zoom the trace. However, for subsequent measure-
ments the measurement range is changed according to the new setting.
If you change this value during a continuous measurement, only the scaling of the x-
axis changes for measurement cycles that have been triggered before the change. For
subsequent measurement cycles, the measurement range changes according to the
new setting.
RF Level