R3132 Series Spectrum Analyzer Operation Manual
3.3.18 POWER MEASURE Key (Power Measurement)
3-58
PBW: Noise power bandwidth
X1: 1
X2: 1001
Average Power Measures the power averaged over the object range (the entire
measurement span or window) and displays it.
Allows you to set the averaging count used to calculate the aver-
age power.
With average power measurements, the resolution bandwidth
(RBW) is set to a bandwidth wider than the amplitude variation
width (the resolution bandwidth must be at least three times wider
than the occupied bandwidth). The average power is calculated
using the formula shown below.
The number of trace points on the horizontal axis is set to 1001.
P
AVG
: Denotes the average power to be calculated.
P (n): Denotes the data (dBm) for each trace point.
X1: 1
X2: 1001
Power Meas OFF Turns off the power measurement function.
OBW Displays the OBW menu.
OBW% Sets the percentage of occupied power compared to the total pow-
er when measuring the occupied bandwidth.
Parameter Setup Displays the Prmtr Setup menu.
Default Sets the following settings to default values: the frequency span,
resolution bandwidth, video bandwidth, sweep time, detector,
trace mode and the OBW%. When Default is enabled, the de-
faults are automatically set when the OBW is measured.
Manual Disables the Default function. As a result, the above settings must
be set manually. The currently set values are used when the OBW
is measured.
Define → Default The currently set values become the new defaults.
OBW OFF Turns the OBW measuring function off.
ACP Displays the ACP menu.
CS/BS Setup Displays the CS/BS Setup menu, and the editor used to set the
channel spacing and specified bandwidth together.
P
AVG
= 10log [ ∑
(
10
10
)
×
1001
1
X2
P(n)
n =X1
]
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