Measurement Types and Result Displays
R&S
®
NRX
109
User Manual 1178.5566.02 ─ 07
This parameter measures the effective power transmitted to the load. With good
matching, the difference between forward power and absorbed power is less than one
percent.
Remote command:
CALCulate<Measurement>[:CHANnel<Channel>]:FEED<Channel>
"POWer:ABSorption:AVERage"
Crest Factor (CF) ← Forward
Level difference between the peak envelope power and the average power in dB.
Average power
Crest factor =
Peak envelope power
10 dB x log
Allows recognizing larger modulation distortions quickly.
Remote command:
CALCulate<Measurement>[:CHANnel<Channel>]:FEED<Channel>
"POWer:CFACtor"
Absorption PEP ← Forward
Absorbed peak envelope power (PEP). Difference of
between forward and reverse power measurement.
Remote command:
CALCulate<Measurement>[:CHANnel<Channel>]:FEED<Channel>
"POWer:ABSorption:PEP"
Burst Average ← Forward
Average power within a burst. The R&S NRX determines the average burst power by
multiplying the average power with the ratio of burst period to burst width:
Burst width
Burst average =
Burst period
Average
Burst period and burst width are derived depending on the setting of
For pulsed RF signals, the burst average defines the average carrier power within the
burst. If the burst is unmodulated and has no overshoots, the average burst is equal to
the
Remote command:
CALCulate<Measurement>[:CHANnel<Channel>]:FEED<Channel>
"POWer:FORWard:AVERage:BURSt"
Absorption Burst ← Forward
Absorbed burst average. Difference of
between forward and reverse
power measurement.
Remote command:
CALCulate<Measurement>[:CHANnel<Channel>]:FEED<Channel>
"POWer:ABSorption:AVERage:BURSt"
NRT
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