R3132 Series Spectrum Analyzer Operation Manual
3.3.18 POWER MEASURE Key (Power Measurement)
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3.3.18 POWER MEASURE Key (Power Measurement)
This section describes the Power menu displayed when the
POWER MEASURE
key is pressed.
Channel Power Activates the measuring window, and displays the CH Power
menu.
The channel power is calculated using the formula shown below.
P
CH
: Channel power
P(n): Data (dBm) for each trace point
SPAN: Current span value
PBW: Noise power bandwidth
X1: Data position of start frequency on the x-axis.
X2: Data position of stop frequency on the x-axis.
Window Position Allows you to set the center of the measuring window (channel
bandwidth).
Window Width Allows you to set the width of the measuring window (channel
bandwidth).
Average Times Allows you to set the number of times the sweep is averaged.
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, channel band position and channel bandwidth. When
Default is enabled, the defaults are automatically set when the
channel power is measured.
Manual Disables the Default function. As a result, the above settings must
be set manually. The currently set values are used when channel
power is measured.
Define → Default The currently set values are the new defaults.
CH Power OFF Removes the window and cancels channel power measurements.
Total Power Measures the total power in the object range (the entire measure-
ment span or window) and displays it.
The total power is calculated using the formula shown below.
The number of trace points on the horizontal axis is set to 1001.
P
T
: Total power to be calculated.
P(n): Data (dBm) for each trace point.
SPAN: Current span value
P
CH
= 10log [ ∑
(
10
10
×
X2
P(n)
n = X1
RBW
1
×
(X2 - X1 + 1)
SPAN
)
P
T
= 10log [ ∑
(
10
10
)
×
PBW
1
X2
P(n)
n = X1
×
1001
SPAN
]
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