Chapter 2 139
Performance Verification Tests
18. Absolute Amplitude Accuracy (Reference Settings): Agilent E4402B, E4403B, E4404B,
E4405B, E4407B, and E4408B
6. Calculate the ideal buried sensor reading by subtracting the
Tracking Error recorded in step 9 of Part 1 from −20 dBm, the ideal
input level to the analyzer.
Ideal Buried Sensor Reading = −20 dBm − Tracking Error
7. Adjust the synthesized signal generator to obtain the Ideal Buried
Sensor Reading calculated above ±0.1 dB.
8. Calculate the Corrected Power Meter Reading by adding the current
power meter reading to the Tracking Error recorded in Part 1, step 9
and record the result below:
Corrected Power Meter Reading = Power Meter Reading + Tracking
Error
Example: If the Power Meter Reading is 0.24 dBm and the Tracking
Error is −20.3 dB, the Corrected Power Meter Reading is −20.06 dBm
Corrected Power Meter Reading ______ dBm
9. Set the analyzer by pressing the following keys:
FREQUENCY, Center Freq, 50 MHz
SPAN, 2 kHz
BW/ Avg, Resolution BW, 1 kHz (Man)
BW/Avg, Video BW, 1 kHz (Man)
AMPLITUDE, More, Y Axis Units, dBm
AMPLITUDE, Ref Level, −20 dBm
AMPLITUDE, Attenuation, 10 dB
AMPLITUDE, Scale Type (Log)
Det/Demod, Detector, Sample
10.Press AMPLITUDE, More, Y Axis Units (or Amptd Units), Volts.
11.Press Peak Search (or Search).
12.Convert the marker amplitude reading from Volts to dBm using the
equation below:
Marker Amptd (dBm) ________ dBm
13.Subtract the Corrected Power Meter Reading noted in step 8 from
the Marker Amptd (dBm) recorded in step 12. Record the difference,
Absolute Amplitude Accuracy (Log), as TR Entry 1 in the
performance verification test record:
Absolute Amplitude Accuracy (Log) = Marker Amptd (dBm) −
Corrected Power Meter Reading (dBm)
14.Press AMPLITUDE, Scale Type (Lin), More, Y-Axis Units (or Amptd
Units), Volts.
50Ω Input Marker Amptd (dBm) =10 log10
×Mkr V2
0.05
----------
⎝⎠
⎛⎞
⎝⎠
⎛⎞