Agilent Technologies 8935 series e6380a manual Reference Marker Ref Mrkr Level and Frequency

Overview of theTest Set’s Built-In Tools

Using the Spectrum Analyzer

Reference Marker (Ref Mrkr) Level and Frequency

In the delta marker mode, a second (reference) marker is placed at the current location of the marker. The first marker becomes a moveable delta marker. When the delta marker is moved, the difference in frequency and level between the reference marker and the delta marker are shown as the Delta Mrkr measurements on the right-hand side of the screen. The reference marker can be set to either Hold or Norm.

When the Ref Mrkr field is set to Hold, the reference marker is frozen at its current position (frequency and level) regardless of changes in the signal level. This is useful for measuring multiple off-air carriers and looking at the difference in power levels. The reference marker can also be used when zeroing return loss.

When you switch from Hold to Norm, the reference marker will stay at its current horizontal setting (frequency), but will track the level of the incoming signal.

When switching from delta mode to normal mode, the delta marker becomes the normal marker.

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