6
Frequency/power sweep measurement is typically used to achieve flatness
calibration of signal sources. The signal source can be simply the signal
generator. In conventional applications, users must manually change the
frequency/power of signal source before the measurement is taken and
displayed on the front panel of the meter. The setup process is very tedious
and time-consuming. An N1913/1914A optional feature utilizes the physical
external trigger in/trigger out (via BNC cables) for both power meter and signal
generator to reduce the testing time dramatically.
Trigger out
ESG signal source
Average power sensor
N1913/1914A
power meter
BNC cable
Trigger in
A setup example is shown in Figure 6, where the N1913/1914A is connected
to Agilent E4438C ESG signal source. The trigger out of the signal source is
connected to the trigger in of the power meter. The trigger out of the power
meter is connected to the trigger in of the signal source. Users must define the
start, stop, and step frequency for signal source and power meter. The signal
source will step to the first frequency point and then generate a trigger out
signal to the power meter. The power meter will start data acquisition. Once
the measurement is settled, the power meter will output a trigger to the signal
source so that the signal source will step to the next frequency point. This
process continues, repeating itself for every frequency step.
Every triggered measurement will be stored in a buffer in the power meter,
the size of which is user-defined (1 to 2,048). Once the measurement cycle is
completed, the data stored in the buffer can be retrieved by using SCPI.
Figure 6. N1913/1914A frequency/power sweep measurement setup with the Agilent
E4438C ESG signal source
The N1913/1914A EPM Series power meter is an enhanced version of the
E4418/4419B EPM Series power meter. The additional features and the
improved user interface make the new N1913/1914A the best choice for any
type of average (CW or modulated) power measurement.
Faster Frequency/
Power Sweep
Measurement
Conclusion
(133 páginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentários a estes Manuais