278 Chapter 2
Performance Verification Tests
32. Spurious Responses: Agilent E4404B, E4405B, E4407B, and E4408B
31.If the analyzer is an E4404B, E4405B or E4407B and is equipped
with Option 1DR, Narrow Resolution Bandwidth, perform step 32
through step 36. Otherwise, continue with step 37.
32.Set synthesized sweeper 1 CW frequency to F1 as indicated in TOI
Test 1 of Table 2-74.
33.Set synthesized sweeper 2 CW frequency to F2 as indicated in TOI
Test 1 of Table 2-74.
34.Press Preset on the analyzer. Press the Factory Preset softkey, if it is
displayed. Press System, Alignments, Auto Align, Off. Set the analyzer
center frequency to the F1 value for TOI Test Option 1DR in Table
2-74. Then, set the analyzer by pressing the following keys:
FREQUENCY, CF Step, 50 kHz (Man)
SPAN, 20 kHz
AMPLITUDE, More, Y Axis Units (or Amptd Units), dBm
AMPLITUDE, Ref Level, –5 dBm
AMPLITUDE, Attenuation, 5 dB (Man)
BW/Avg, 1 kHz (Man)
BW/Avg, Video BW, 300 Hz (Man)
Peak Search (or Search), More
Search Param (or Search Criteria), Peak Excursn, 3 dB
35.On the analyzer, press the following keys:
Peak Search (or Search)
Meas Tools
Mkr → CF
SPAN, 500 Hz
BW/Avg, Res BW, 30 Hz
BW/Avg, Video BW, 10 Hz
36.Repeat step 9 through step 26. This is the TOI test for Option 1DR.
37.See Figure 2-49. Replace the directional bridge with the directional
coupler. The cable from synthesized sweeper 1 should be connected
directly to the input of the directional coupler; no low pass filter is
required when testing frequencies >3 GHz.
38.Connect the output of the directional coupler to the power sensor.
39.Repeat step 4 through step 29 using information and entries for TOI
Test 2 in Table 2-74 and Table 2-75.
40.Connect the output of the directional bridge to the power sensor.
41. Repeat step 4 through step 29 using information and entries for TOI
Test 3 in Table 2-74 and Table 2-75.
42.On the analyzer, press System, Alignments, Auto Align, All.
43.Part 1: Third Order Intermodulation Distortion is complete.
Continue with Part 2: Second Harmonic Distortion.