R&S 1424.7005.02, Руководство пользователя

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Measurement Types and Result Displays
R&S
®
NRX
72 User Manual 1178.5566.02 ─ 07
Relative Measurements ← Rel
Allows you to relate measured power or a power ratio to a reference value. Whether
the power is measured by one power sensor or whether it is a combined value mea-
sured by two power sensors, is set by
"Channel Calculation Function" on page 67.
Off Absolute power or power ratio
On Relative power or power ratio. As reference value, the value specified
under
Reference Value is used.
Set Uses the current measurement result as reference value and enables
the relative measurement.
Remote command:
CALCulate<Measurement>:RELative<DirectionalChannel>:STATe
on page 234
CALCulate<Measurement>:RELative<DirectionalChannel>[:MAGNitude]:
AUTO
on page 233
Trigger
See Chapter 6.3, "Triggering" , on page 59.
7.2 Burst Average
The power sensor measures the average burst power of pulsed signals. The burst
average measurement is available with multipath and wideband power sensors.
No external trigger signal is required, because the power sensor detects the start and
end of the burst itself. The time interval in which the average power is measured starts
when the power exceeds the trigger level and ends when the trigger logic detects the
end of the pulse.
Power
Time
Trigger level
Dropout time
Dropout tolerance
Pulse interval
Figure 7-1: Burst average measurement parameters
To prevent power drops due to modulation from being erroneously interpreted as the
end of a pulse, you must define the dropout tolerance. The dropout tolerance is a time
Burst Average
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