Trilithic 180 DSP User Manual

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Page IV-153
180 DSP Operation Manual
Signal Level Meter
The QAM Error Vector Spectrum Analysis
measurement includes two on-screen
markers that are used for measurement of
specic frequencies within the QAM error
vector spectrum.
The markers are represented by the
following color bullets and vertical lines:
• Marker 1 – Purple
• Marker 2 – Light Blue
Highlight the desired marker and use either
of the following methods to change the
marker location:
• Use the up/down arrow buttons to
change the marker in 0.200 MHz
increments.
• Press the Enter button and use the
Virtual Keyboard to directly enter the
frequency as shown in the image to
the right.
The following information is displayed for the markers:
• Level – Displays the signal level at the specied frequency for each marker.
• Frequency Delta – Displays the frequency delta between the two markers.
• Frequency Peak – Displays the frequency of the peak signal level in the return
spectrum.
• Level Peak – Displays the peak signal level in the return spectrum.
• Level Delta – Displays the signal level difference between the minimum and maximum
level values in the return spectrum.
Marker Adjustment

Trilithic 180 DSP Specifications

General

Brand	Trilithic
Model	180 DSP
Category	Measuring Instruments
Language	English