User Manual

ManualsBrandsRohde & Schwarz ManualsSignal Generators & Spectrum AnalysersSpectrum Analyser Portable, 3GHz, 50Ohm

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The Spectrum Application (RF Measurements)

R&S

FPL1000

218User Manual 1178.3370.02 ─ 09

Number of Samples

Defines the number of power measurements that are taken into account for the statis-

tics.

For statistics measurements with the R&S FPL1000, the number of samples to be

measured is defined instead of the sweep time. Since only statistically independent

samples contribute to statistics, the sweep or measurement time is calculated automat-

ically and displayed in the channel bar ("Meas Time"). The samples are statistically

independent if the time difference is at least 1/RBW. The measurement time is, there-

fore, expressed as follows:

Meas Time = N

Samples

/RBW

For the R&S FPL1000, the maximum number of samples is approximately 20 million.

Remote command:

CALCulate<n>:STATistics:NSAMples on page 703

Gated Trigger

Activates and deactivates gating for statistics functions for the ACP and the CCDF

measurements. The gate ranges are defined using the Edit Gate Ranges function.

Remote command:

[SENSe:]SWEep:EGATe:TRACe<t>[:STATe<gr>] on page 704

Edit Gate Ranges

Opens a dialog box to configure up to 3 gate ranges for each trace. For details see

"Gate Range Definition for APD and CCDF" on page 218.

Adjust Settings

Adjusts the level settings according to the measured difference between peak and min-

imum power for APD measurement or peak and mean power for CCDF measurement

in order to obtain maximum power resolution. Adjusts the reference level to the current

input signal.

Remote command:

CALCulate<n>:STATistics:SCALe:AUTO ONCE on page 706

Gate Range Definition for APD and CCDF

Access: "Overview" > "Select Measurement" > "APD"/"CCDF" > "APD Config"/ "CCDF

Config" > "Edit Gate Ranges"

You can configure gate ranges for gated triggering in statistical measurements.

For background information on defining gate ranges see Chapter 7.2.9.4, "APD and

CCDF Basics - Gated Triggering", on page 215.

The remote commands required to perform these tasks are described in Chap-

ter 11.6.9.3, "Using Gate Ranges for Statistical Measurements", on page 703.

Measurements and Results