R&S ESR Series User Manual

Receiver Mode
R&S
®
ESR
171User Manual 1175.7068.02 ─ 12
Table 5-1: RMS Average detector
Band A Band B Band C/D Band E
Frequency range < 150 kHz 150 kHz to 30 MHz 30 MHz to 1 GHz > 1 GHz
Resolution band-
width
200 Hz 9 kHz 120 kHz 1 MHz
Time constant of
the mechanical
device
160 ms 160 ms 100 ms 100 ms
Corner frequency 10 Hz 100 Hz 100 Hz 1 kHz
Regarding measurement time, see CISPR Average detector.
Measurement times shorter than 20 ms
With measurement times shorter than 20 ms the detector weighting changes to plain
RMS weighting.
5.2.3 Trace Modes
The traces can be activated individually for a measurement or frozen after a measure-
ment has been performed. Traces that are not active are not visible. Each time the
trace mode is changed, the selected trace memory is cleared.
Note that in Spectrum mode, the Max Hold and Min Hold modes are unavailable for
statistics measurements.
Clear Write
Overwrite mode: the trace is overwritten by each sweep. This is the default setting.
All available detectors can be selected.
Remote command:
DISP:TRAC:MODE WRIT, see DISPlay[:WINDow<n>]:TRACe<t>:MODE
on page 683
Max Hold
The maximum value is determined over several sweeps and displayed. The R&S ESR
saves the sweep result in the trace memory only if the new value is greater than the
previous one.
This mode is especially useful with modulated or pulsed signals. The signal spectrum
is filled up upon each sweep until all signal components are detected in a kind of enve-
lope.
Remote command:
DISP:TRAC:MODE MAXH, see DISPlay[:WINDow<n>]:TRACe<t>:MODE
on page 683
Measurement Basics

R&S ESR Series Specifications

General

Brand	R&S
Model	ESR Series
Category	Receiver
Language	English