Rohde & Schwarz R&S FSL3 - Power Measurements - MEAS Key

R&S FSL Power Measurements – MEAS Key
1300.2519.12 4.75 E-11
Power Measurements – MEAS Key
With its power measurement functions, the R&S FSL is able to measure all the necessary parameters
with high accuracy in a wide dynamic range.
A modulated carrier is almost always used (except e.g. SSB–AM) for high–frequency transmission of
information. Due to the information modulated upon the carrier, the latter covers a spectrum which is
defined by the modulation, the transmission data rate and the signal filtering. Within a transmission
band each carrier is assigned a channel taking into account these parameters. In order to ensure error–
free transmission, each transmitter must be conforming to the specified parameters. These include
among others:
• the output power
• the occupied bandwidth, i.e. the bandwidth which must contain a defined percentage of the power
• the power dissipation allowed in the adjacent channels
The MEAS key is used for complex measurement functions as power measurements, occupied
bandwidth, signal statistic, carrier to noise spacing, AM modulation depth, third–order intercept point,
harmonics and spurious emissions. For measurement examples refer to chapter "Advanced
Measurement Examples" and to the Quick Start Guide, chapter 5, "Basic Measurement Examples".
The following measurements can be performed:
• Power in zero span (Time Domain Power softkey; for details see "Power measurement in zero
span" on page 4.78)
• Channel power and adjacent–channel power with span > 0 and with a single or several carriers
(CP, ACP, MC–ACP softkey)
• Occupied bandwidth (OBW softkey, for details see "Measurement of occupied bandwidth" on page
4.78)
• Carrier–to–noise ratio (C/N, C/No softkey)
• Amplitude probability distribution (APD and CCDF softkeys, for details refer to hapter "Advanced
Measurement Examples", "Amplitude Distribution Measurement")
• Modulation depth (AM Mod Depth softkey)
• 3rd order intercept (TOI softkey, for details refer to chapter "Advanced Measurement Examples",
"Intermodulation Measurements")
To open the power measurement menu
 Press the MEAS key.
The power measurement menu is displayed.