HP 8360 Operation, Power Slope, Power Sweep and, Power Sweep Operation, 1-18Getting Started Basic

Power Sweep andPower Slope

Operation

Power Sweep Operation

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).

Press ( P O W E R LEVEL) (TJ (YiJ.

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).

Press [$iKKJ.

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:

--> POWER SWEEP: 7 . 00 dB/SWP

Now enter @ @ (dB(m)) (power sweep is still the active entry function).

This time the power meter indicates less than the power sweep requested. Note that the synthesizer is unleveled, UNLVD. This 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).

Press [POWER LEVEL) !_) Q (FJ

On the power meter, press dB[REF] to reset the reference level.

1-18 Getting Started Basic