R3131 Spectrum Analyzer Operation Manual
3.3 Menu Function Descriptions
3-33
3.3.13 MEAS Key (Measurement)
This section describes the menu displayed when the MEAS key is pressed.
Noise/Hz Displays the Noise/Hz menu, and allows you to set the frequency
width for noise measurement.
dBm/Hz Sets the vertical axis unit to dBm, and sets the marker readout
signal level unit to dBm/Hz. In addition, the detector is
automatically set to the sample detection mode.
dBµV/ Hz Sets the vertical axis unit to dBµV, and sets the marker readout
signal level unit to dBµV / Hz. In addition, the detector is
automatically set to the sample detection mode.
dBc/Hz Sets the unit of delta marker signal level to dBc/Hz and turns the
marker fixed function (delta marker) ON, then sets the detector to
the sample detection mode.
Noise/Hz Off Turns off the noise measurement mode, and displays the Measure
menu.
XdB Down Displays the XdB Down menu.
X dB Down Moves the normal marker to an intersection point on the trace x
dB down from the present location according to the MKR Read
DLT/LFT/RHT setting.
X dB Left Moves the normal marker to the left to an intersection point on the
trace x dB down from the present location.
X dB Right Moves the normal marker to the right to an intersection point on
the trace x dB down from the present location.
MKR Read DLT/LFT/RHT Selects the marker display under the x dB down function to either
DLT, LFT or RHT.
DLT: The delta marker is displayed on the left; and the
normal marker, on the right.
LFT: The normal marker is displayed on the left.
RHT: The normal marker is displayed on the right.
Apr 10/98
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