prog.book : chapter1.fm 58 Mon Feb 15 09:24:37 1999
Power Meter Remote Operation
Measuring Pulsed Signals
1-58 HP E4418B/E4419B Programming Guide
Measuring Pulsed Signals
The power meter can be used to measure the power of a pulsed signal. The
measurement result is a mathematical representation of the pulse power
rather than an actual measurement. The power meter measures the
average power of the pulsed input signal and then divides the
measurement result by the duty cycle value to obtain the pulse power
reading. The allowable range of values is 0.001% to 99.999%. The default
is 1.000%. A duty cycle value can be set using the following command:
[SENSe[1]]|SENSe2:CORRection:DCYCle|GAIN3 <numeric_value>
Note Pulse measurements are not recommended using HP ECP series
power sensors.
Making the Measurement
An example of a pulsed signal is shown in Figure 1-7.
Figure 1-7: Pulsed Signal
You use the SENSe command subsystem to configure the power meter to
measure a pulsed signal. The following example program, in HP Basic,
shows how to measure the signal for the HP 8480 series power sensors.
Power
Time
B
A
Duty Cycle = A
B
Duty Cycle (%) = A x 100
B