10 SENSe Subsystem
398 N1911A/1912A P-Series Power Meters 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 deviations 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.
Pulse measurements are not recommended using E-Series power sensors at power levels
above –20 dBm.
Pulse power averages out any deviations in the pulse such as overshoot or ringing. Hence,
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) cause incorrect
results.
The pulse power on/off ratio must be much greater than the duty cycle ratio.
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