Agilent Technologies E4445A Manual

Chapter 3 71
Making Measurements
RF Power Measurement
Making Measurements
Step 5. Perform a Frequency Counter measurement to accurately determine the center
frequency of your signal. When the frequency readout is displayed, the PSA is
automatically tuned to the input frequency.
Step 6. Press the
RF Power key.
Wait for the measurement to be completed and the measurement result to be
displayed.
Step 7. To adjust the measurement settings, press the
Meas Setup key, then:
1. press the
Use Power Meter key to toggle the Power Meter presence between Ye s
and
No to indicate whether your system includes a Power Meter. The default
setting is
Yes .
2. press the
Avg Number key to toggle averaging between On and Off. When
setting to
On, enter the number. The default average setting is Off and the
default number is 4 when averaging is
On. If the input signal changes during
the average period, wait until the averaging is done or the next averaging period
starts.
3. press the
Avg Mode key to toggle the average mode between Exp and Repeat.
The default average mode is
Repeat. In the Repeat mode, the averaging is reset
and a new average is started after the average count is reached. By contrast, in
the Exponential mode, each successive date acquisition after the average count
is reached, is exponentially weighted and combined with the existing average.
Step 8. To adjust the Power Meter resolution, press
System, More, More, Power Meter,
Power Meter Config, More, then toggle the Resolution key between 0.01 dB and
0.001 dB.
To adjust the time-out time for connecting the Power Meter, press
System, More,
More, Power Meter, Power Meter Config, More, Time Out, enter the time value and
select the unit.
Step 9. To adjust the display settings, press
AMPLITUE/Y Scale, then:
1. press the
Display Unit key and select a display unit key, like Watt, V, dBm. The
default setting is
dBm.
2. press the
Display Mode key to toggle between Normal and Ratio. The default
setting is
Normal.
3. press the
Ratio Ref key to toggle between Auto and Man. When you select Man,
input the reference value and unit. When the input signal is too low, no
measurement results display and you get SigLo indicator.
4. press the
Ratio Mode key to toggle the display reading between Log
(logarithmic, unit
dB) and Linear (linear, unit %).

Agilent Technologies E4445A Specifications

General

Brand	Agilent Technologies
Model	E4445A
Category	Measuring Instruments
Language	English