Agilent Technologies X Series Manual page 280

Waveform Measurement
n Results Returned
1 Returns the following scalar results:
1. Sample Time is a floating point number representing the time between samples when using the
2. Mean Power is the mean power (in dBm). This is the power across the entire trace. If averaging
3. Mean Power Averaged is the power (in dBm) for N averages, if averaging is on. This is the
4. Number of samples is the number of data points in the captured signal. This number is useful
5. Peak-to-mean ratio has units of dB. This is the ratio of the maximum signal level to the mean
6. Maximum value is the maximum of the most recently acquired data (in dBm).
7. Minimum value is the minimum of the most recently acquired data (in dBm).
2 Returns trace point values of the entire captured signal envelope trace data. These data points are
floating point numbers representing the power of the signal (in dBm). There are N data points, where
N is the number of samples. The period between the samples is defined by the sample time.
Waveform Measurement Description
Also available under the basic Waveform measurement is an I/Q window, which shows the I and Q
signal waveforms in parameters of voltage versus time to disclose the voltages that comprise the
complex modulated waveform of a digital signal.
The waveform measurement can also be used to perform general purpose power measurements to a high
degree of accuracy.
Key Path
Initial S/W Revision
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trace queries (n=0, 2, and so forth).
is on, the power is for the latest acquisition.
power across the entire trace. If averaging is on, the power is for the latest acquisition. If
averaging is off, the value of the mean power averaged is the same as the value of the mean
power.
when performing a query on the signal (i.e. when n=0, 2, etc.).
power. Valid values are only obtained with averaging turned off. If averaging is on, the
peak-to-mean ratio is calculated using the highest peak value, rather than the displayed average
peak value.
Front-panel key
Prior to A.02.00