Agilent Technologies 8485D Manuel de service télécharger pdf (Page 57)

Service

Chapter 3 47

Step 4. Connect the Power Sensor to channel A of the Power Meter.

NOTE Heat can affect the adjustments so handle the sensor as little as possible.

Step 5. Adjust the black/white and brown/white wires until the waveform shown on the

oscilloscope is similar to that shown in Figure 3-2. This shows an example of a High

Gain output signal with acceptable sensor offset and spike balance settings.

Figure 3-2 Example of an Acceptable Waveform

Step 6. Allow no more than 50mV variance on the sensor offset step (i.e. from top-to-top or

bottom-to-bottom of the waveform). Figure 3-3 shows an example of a High Gain

output signal with an unacceptably high sensor offset setting.

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Agilent Technologies 8485D Manuel de service Page 57