Agilent Technologies U2000 Series, Operating And Service Manual

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2 Operating Information
34 U2000 Series Operating and Service Guide
Pulse Power Measurement in Average only Mode
The U2000 Series USB power sensors provide capability of performing
average power measurements of pulsed signals in average only mode with
the signal profile as shown below:
• Pulse width
≥
30 µs
•
Pulse period
≤
8 ms
• Duty cycle
≥
1%
To perform accurate average power measurements of pulsed signals, preset
the sensor to Burst mode or using “
SYSTem:PRESet BURST
” SCPI
command. It is recommended to disable the step detection and set the
average count to
≥
256.
The U2000 Series USB power sensors are designed to perform average
power measurements over dynamic range of –60 dBm to +44 dBm. The
supported power range for each sensor model is shown as follows
:
Regular external zeroing and higher average count are required when the
pulsed signal is under one of the following circumstances:
• The pulse power takes place within the last 10 dB of the sensor’s lower
dynamic range (for example, –60 dBm to –50 dBm for U2000/1/2A
model)
• The pulse width is from 30 µs to 40 µs
• The duty cycle is <2%
Model Power Range
U2000/1/2A
–
60 dBm to
+
20 dBm
U2000/1/2H
–
50 dBm to
+
30 dBm
U2000/1B
–
30 dBm to
+
44 dBm
N O T E
The pulse power measurement in average only mode is not applicable for U2004A.