Agilent Technologies Signal Analyzer N9030a User Manual
Page 743
6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Marker Function
CALC:MARK:FUNC? returns the current setting of band function for the marker specified. In this
case it returns the string: BDEN.
CALC:MARK:Y? returns the y-axis value of the Band Density function for marker 1. Note that the
delta value when the Y axis unit is Watt is the square of the delta value when the Y axis unit is
Volt. For example, when the percent ratio with Y axis unit in Volt is 0.2, the percent ratio with Y
axis unit in Watt will be 0.22 = 0.04. When you read the value out remotely you have to know
whether your Y Axis Unit is log (dB), linear (V or A), or power (W).
Notes
The zero-width case is treated as one bucket wide although it shows a width of 0.
When the trace the marker is on crosses domains, the width crosses domains as well, to remain
the same percentage of the trace.
Notes
See the description under the “
” key.
Dependencies
Fixed markers: It is not possible to change the Band Function for a Fixed marker, so all of the
Band Function keys are grayed out for a Fixed marker.
Couplings
If the detector mode for the detector on the marker’s trace is set to Auto, the average detector is
selected. If the Average type is set to Auto, Power Averaging is selected.
If the selected (specified) marker is off, selecting Band Density via front panel or SCPI will turn
the marker on.
State Saved
n/a.
Initial S/W Revision
Prior to A.02.00
More Information
It may seem like the band density marker function is exactly like a function of a noise marker
with variable width. But they are somewhat different. The Noise markers assume that the signal to
be measured is noise-like. Based on this assumption, we can actually make reasonable
measurements under very nonideal conditions: any detector may be used, any averaging type, any
VBW. In contrast, the Band Power and Band Density markers make no assumption about the
statistics of the signal.
If the detector mode for the detector on the marker’s trace is set to Auto, the average detector is
selected. If the Average type is set to Auto, Power Averaging is selected. Other choices for the
detector or Average type will usually cause measurement inaccuracy.
What is band/interval density?
On frequency domain traces, the average density across a band is the total band power divided
by the bandwidth over which it is measured.
Remote Language Compatibility Measurement Application Reference
743