Power Sweep and
Power Sweep Operation
1-18 Getting Started Basic
The power sweep function allows the power output to be swept
(positive or negative) when the synthesizer is in the CW frequency
mode. The power output of the synthesizer determines the maximum
leveled power sweep that can be accomplished. For this example refer
to the "Menu Map" section.
Zero and calibrate the power meter.
Connect the instruments as shown in Figure l-10.
Press @ @ [GHz).
P O W E R
Press (SWEEP @ (,,,) [SINGLE).
Set the power meter to dB[REF] mode.
The synthesizer is ready to produce a 4 GHz CW signal at 0 dBm
power out, with a 2 second sweep rate whenever a single sweep is
executed. The power meter is ready to measure the power level
relative to a starting point of 0 dBm.
Press POWER (MENU).
Select Power Sweep and enter @ (dB0) (asterisk on).
Watch the relative power indication on the power meter. At the end
of the sweep the power meter indicates +7 dB. The active entry area
on the synthesizer indicates:
Now enter @ @ (dB(m)) (power sweep is still the active entry
This time the power meter indicates less than the power sweep
requested. Note that the synthesizer is unleveled,
happens because the synthesizer's output power at the start of the
sweep is 0 dB and the requested power sweep takes the synthesizer
beyond the range where it is able to produce leveled power. The
range of the power sweep is dependent on the ALC range and can be
offset if a step attenuator (Option 001) is present.
Select Power Sweep to turn this function off (no asterisk).
On the power meter, press dB[REF] to reset the reference level.