R&S FSH
Trace Settings
1145.5973.12 4.19
E-14
Trace Settings
The R&S FSH provides one measurement trace and a reference trace in memory.
Trace mode
A variety of display modes can be selected for the trace:
•
CLEAR/WRITE
The R&S FSH clears the old trace during a new sweep. This is the
default setting.
•
AVERAGE
The R&S FSH takes the level average over consecutive traces. In
the default setting, averaging is on a pixel-by-pixel basis, sliding
over the ten previous traces. Alternatively, you can set the number
of averagings between 2 and 999. This reduces the effects of
noise, for example, but has no effect on sine signals. The average
mode, therefore, makes it easy to display sine signals in the
vicinity of noise.
•
MAX HOLD
The trace indicates the maximum value that has been measured
up to that point in time. The Max Hold mode is only cancelled if
another setting is selected and the trace pixels from the new
setting cannot be compared with the trace pixels from the previous
setting – for example if the span is changed. Intermittent signals in
the spectrum or the maximum of fluctuating signals are easy to
find with MAX HOLD.
•
MIN HOLD
The trace indicates the minimum value that has been measured up
to that point in time. The Min Hold mode is only cancelled if
another setting is selected and the trace pixels from the new
setting cannot be compared with the trace pixels from the previous
setting – for example if the span or the center frequency is
changed. With MIN HOLD, sine signals within the noise can be
highlighted or intermittent signals suppressed.
•
VIEW
The R&S
FSH freezes the presently displayed trace. The
measurement is aborted. This, for instance, allows subsequent
evaluation of spectra with the aid of the marker.
Operating sequence:
Press the TRACE key.
Press the TRACE MODE softkey.
The submenu for setting the trace mode opens.
Using the cursor keys or the rotary knob, select the
trace mode you want and confirm with the ENTER
key or the TRACE MODE softkey.
The "Trace:" display at the center of the top of the
display shows the trace mode that has been selected.
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