Brochure

Modulation analysis

The R&S®ZPH-K7 option converts the R&S®Cable Rider ZPH

into a modulation analyzer to measure the quality of ampli-

tude or frequency modulated signals. The analog modula-

tion display shows the waveform as well as measurement

parameters such as carrier power, carrier offset, modula-

tion index (depth) for AM signals, frequency deviation for

FM signals, SINAD and THD. The modulation summary

display provides user-definable limits for each measure-

ment. This feature is especially useful for installation and

maintenance of AM/FM radio stations.

Basic digital modulation formats are used in many ap-

plications, e.g. near-field communications. The R&S®ZPH

supports both ASK and FSK analysis. The digital modula-

tion displays include trace, eye diagram, modulation error

and symbol analysis. Specialized configuration presets

for Bluetooth® Low Energy (Bluetooth® LE) and tire pres-

sure monitoring systems (TPMS) are available, too. The

R&S®ZPH-K7 option lets users easily verify the quality of

the basic modulated signals

Display of the interferer signal strength on the

map with the R&S®ZPH-K16 signal strength

mapping option

Interference analysis and signal strength mapping

The R&S®ZPH-K15 interference analysis and R&S®ZPH-K16

signal strength mapping options are great tools for analyz-

ing and locating ambiguous signals or interferers.

Long-term spectrogram recording allows up to 999 hours

of on-air activity to be captured; the recording dura-

tion depends on the recording interval setting. The re-

corded data can be analyzed on the R&S®ZPH or with the

R&S®InstrumentView software.

Signal strength mapping displays a pictorial view of the

signal power level on an indoor or outdoor map. The color

indicator provides a good estimation of the signal cover-

age in a particular area or where the interferer or intended

signal is most likely located.

Locating a signal with the R&S®ZPH-K15

interference analysis option and the R&S®HE400

series directional antenna