Technical data

Chapter 2 2-9
Performance Tests
2. Source Power Range, Linearity, and Accuracy
Power Range and Power Linearity
13.Connect the equipment as shown in Figure 2-4.
Figure 2-4 Power Range, Linearity, and Accuracy Test Setup
14.Press . Set the power meter calibration
factor for this CW frequency.
15.Press . On the power meter, set the current power level as the
reference for relative power (dB) measurements. This can be done by either pressing
dB REL on an HP/Agilent 436A or REL on a 438A power meter front panel.
16.Press . Write the power meter reading in the “Measured Value”
column on the performance test record.
17.With the power offset value that is listed in the performance test record, calculate the
power linearity using this formula:
Power Linearity = [Power Offset] + [Measured Value]
18.Write the result of your calculation on the performance test record.
19.Repeat steps 16 through 18 for the other source power levels listed on the performance
test record.
20.Press .
21.Press . Set the power meter calibration factor for the selected CW
frequency. Press the appropriate hardkey (
dB REL or REL) on the 436A/438A power
meter front panel for relative power measurements.
22.Press . Write the power meter reading in the “Measured Value”
column on the performance test record.
Preset Sweep Setup
CW FREQ
300 k/m
Power 10 x1
Power −5 x1
Sweep Setup
CW FREQ
3 G/n
Power 10 x1
Power −5 x1