R&S FSH Using the Markers
1309.6275.12 4.23 E-2
Trace mathematics
T
he R&S FSH can subtract a saved trace from the active trace and display the difference.
Operation:
Press the TRACE key.
Press the TRACE > MEMORY softkey.
The R&S FSH transfers the currently displayed trace to
the trace memory.
Press the SHOW softkey. Select the memory trace
and confirm your selection with ENTER.
The R&S FSH displays the saved trace in white.
To remove the saved trace from the screen, press
the SHOW softkey again. Select the memory trace
marked with X and confirm your selection again with
ENTER.
Press the TRACE MATH key and select
TRACE – MEM or MEM – TRACE.
The R&S FSH displays the difference between the
saved trace and the active trace.
To remove the saved trace from the screen, press
the TRACE MATH softkey again and select OFF.
Using the Markers
The R&S FSH has six markers, five of which can be used as either marker or delta marker.
The markers cannot leave the trace and indicate the frequency and level of the point they are
positioned on. The frequency indicated by a marker is shown by a vertical line which extends from the
top to the bottom of the measurement diagram. The numeric frequency and level readouts are
displayed in the top left-hand corner of the screen. The unit is the same as the unit of the reference
level.
The position of the delta marker is indicated by a dashed line to distinguish it from the other marker.
The delta marker level is always a level relative to the main marker level and so the delta marker level
unit is always dB. The delta marker frequency is always relative to the main marker – in other words,
the delta marker frequency is the frequency difference between the frequency at the point marked by
the main marker and the frequency at the point marked by the delta marker.
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