R&S ESR Series, User Manual

Page: 175 / 1126

Receiver Mode
R&S
®
ESR
172 User Manual 1175.7068.02 ─ 12
Min Hold
The minimum value is determined from several measurements and displayed. The
R&S
ESR saves the smallest of the previously stored/currently measured values in the
trace memory.
This mode is useful e.g. for making an unmodulated carrier in a composite signal visi-
ble. Noise, interference signals or modulated signals are suppressed whereas a CW
signal is recognized by its constant level.
Remote command:
DISP:TRAC:MODE MINH
, see
DISPlay[:WINDow<n>]:TRACe<t>:MODE
on page 683
View
The current contents of the trace memory are frozen and displayed.
Note: If a trace is frozen, the instrument settings, apart from level range and reference
level (see below), can be changed without impact on the displayed trace. The fact that
the displayed trace no longer matches the current instrument setting is indicated by the
icon on the tab label.
If the level range or reference level is changed, the R&S ESR automatically adapts the
measured data to the changed display range. This allows an amplitude zoom to be
made after the measurement in order to show details of the trace.
Remote command:
DISP:TRAC:MODE VIEW
, see
DISPlay[:WINDow<n>]:TRACe<t>:MODE
on page 683
Blank
Hides the selected trace.
Remote command:
DISP:TRAC OFF
, see
DISPlay[:WINDow<n>]:TRACe<t>[:STATe]
on page 849
5.2.4 AF Demodulation
Risk of hearing damage when using headphones
To protect your hearing, make sure that the volume setting is not too high before put-
ting on the headphones.
The volume for the headphones is controlled using the rotary knob next to the "AF Out-
put" interface on the front panel of the instrument or with the
SYSTem:SPEaker:
VOLume
command.
The R&S ESR provides demodulators for AM and FM signals. With these demodula-
tors, a displayed signal can be identified and monitor acoustically through the use of
the internal loudspeaker or with headphones.
Measurement Basics