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R3131 Spectrum Analyzer Operation Manual

3.3.13 MEAS Key (Measurement)

This section describes the menu displayed when the MEAS key is pressed.

Noise/Hz

dBm/Hz

dBp.V/ .\1 Hz

dBc/Hz

Noise/Hz Off

XdB Down

X dB Down

Displays the Noise/Hz menu, and allows you to set the frequency

width for noise measurement.

Sets the vertical axis unit to dBm, and sets the marker readout sig-

nal level unit to dBm/Hz. In addition, the detector is automatically

set to the sample detection mode.

Sets the vertical axis unit to dBi.tV, and sets the marker readout

signal level unit to dBµV /N/Hz. In addition, the detector is auto-

matically set to the sample detection mode.

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.

Turns off the noise measurement mode, and displays the Measure

menu.

Displays the XdB Down menu.

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 nor-

mal marker, on the right_

LFT: The normal marker is displayed on the left.

RHT: The normal marker is displayed on the right.

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ADVANTEST R3131 Series User Manual

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