Agilent Technologies E4408B User Manual

6-46 Chapter6
Front-Panel Key Reference
Marker
Key Access: Marker, More 1 of 2
Readout Accesses the following menu keys that allow you to change the active
marker readout. Key Access:
Marker, More 1 of 2
Frequency Sets the marker to Frequency. The default selection in
non-zero spans, displays the absolute frequency of a
normal marker or the frequency of the delta marker
relative to the reference marker.
Key Access:
Marker, More 1 of 2, Readout
Period Sets the marker readout to Period. Displays the
reciprocal of the above frequency.
Key Access:
Marker, More 1 of 2, Readout
Time Sets the marker readout to Time. The default selection
in zero span, displays the time interval between a
normal marker and the start of the sweep or the time of
the delta marker relative to the reference marker.
Key
Access: Marker, More 1 of 2, Readout
Inverse Time Sets the marker readout to Inverse Time. Displays the
reciprocal of the above time interval.
Key Access:
Marker, More 1 of 2, Readout
Function Accesses the following marker function menu keys listed below. Key
Access:
Marker, More 1 of 2
Band Power Indicates the power over that part of the trace between
the reference and active markers. If only one marker is
present when you press
Band Power, a second marker is
placed at the same location as the first marker. To
reposition the markers, press
Marker to access Band Pair
and Span Pair keys. Pressing Band Power also changes
the display mode to sample, the correct mode for power
measurements. Key Access:
Marker, More 1 of 2, Function
NOTE For best accuracy, set the video bandwidth to at least ten times the
resolution bandwidth to minimize its averaging effect.
NOTE Band Power has no meaning in zero span, and the indicated value is
independent of signal level and marker placement.
Marker Noise Reads out the average noise level, referenced to a 1 Hz
noise power bandwidth. If the marker delta function is
on and the noise marker is activated and moved to
measure the noise floor, the marker readout will display
the signal-to-noise ratio.

Agilent Technologies E4408B Specifications

General

Brand	Agilent Technologies
Model	E4408B
Category	Measuring Instruments
Language	English