prog.book : ch9sens.fm 20 Mon Feb 15 09:24:37 1999
SENSe Subsystem
[SENSe[1]]|SENSe2:CORRection:DCYCle|GAIN3[:INPut][:MAGNitude]
9-20 HP E4418B/E4419B Programming Guide
[SENSe[1]]|SENSe2:CORRection:DCYCle|GAIN3[:INPut][:MAGNitude] <numeric_value>
This command is used to set the duty cycle for the pulse power
measurement feature of the power meter. Pulse power measurements
average out any aberrations in the pulse such as overshoot or ringing. The
result returned for a pulse power measurement is a mathematical
representation of the pulse power rather than an actual measurement.
The power meter measures the average power in the pulsed input signal
and then divides the result by the duty cycle value to obtain a pulse power
reading.
Entering a value using this command automatically turns the
[SENSe[1]]|SENSe2:CORRection:DCYCle|GAIN3:STATe command
to ON.
Note Pulse measurements are not recommended using HP E-series
power sensors at power levels above -20 dBm.
Pulse power averages out any aberrations in the pulse such as
overshooting or ringing. For this reason it is called pulse power
and not peak power or peak pulse power.
In order to ensure accurate pulse power readings, the input signal
must be pulsed with a rectangular pulse. Other pulse shapes (such
as triangle, chirp or Gaussian) will cause erroneous results.
The pulse power on/off ratio must be much greater than the duty
cycle ratio.
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