Operating Instructions
53
Viewing Data in the Frequency Domain
Figure 54 Viewing Data in the Frequency Domain
Note:
Each data point is displayed as amplitude over frequency, with frequency on the x-axis.
Amplitude display formats can switched by right-clicking on the graph and selecting one of the format types from
the pop-up window:
Voltage
Current
Phase (Deg)
Impedance
Watts
dBm.
Note:
Format type can also be selected from the Spectral Search Options.
Marker Usage —
Up to 2 markers can be used to view data point details or deltas between 2 data points on the
graph. The active marker, the one with user input focus, is in red and the inactive marker is in black.
Marker Keys —
Up Arrow –
Place the active marker at the maximum value (the highest peak).
Left Arrow –
Move the active marker to the previous point. Tap to move one point at a time or hold to
incrementally skip points.
Right Arrow –
Move the active marker to the next point. Tap to move one point at a time or hold to
incrementally skip points.
E –
On/Off – Enable or disable the active marker.
P –
Cycle through peaks, placing the active marker at the next peak.
1 –
Activate (and enable) marker number 1.
2 –
Activate (and enable) marker number 2.
Viewing Data in a Table of Peaks
The peak table view displays the peak values most recently located in the sweep in a tabular form. The fields are:
Sweep -
The sweep number - a count of how many sweeps have been made since the acquisition was
started.
Timestamp -
The time the sweep dataset was captured from the BDS receiver.
Elapsed (ms) -
The time (in milliseconds) between sweeps, giving an indication of data update rate.
AGC -
Automatic gain control indicator.
