276 Chapter 2
Performance Verification Tests
32. Spurious Responses: Agilent E4404B, E4405B, E4407B, and E4408B
meter reads –12 dBm ±0.1 dB.
8. Disconnect the power sensor from the directional bridge (or
directional coupler). Connect the directional bridge (or directional
coupler) directly to the analyzer input using an adapter (do not use a
cable).
CAUTION Support the directional bridge (or directional coupler) and low pass
filter to minimize stress on the analyzer input connector.
9. 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 1 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, Peak Excursn, 3 dB
10.On the analyzer, press the following keys:
Peak Search (or Search)
Marker →
Mkr → CF
Delta
11.On the analyzer, Press FREQUENCY, ↑. The center frequency should
now be equal to synthesized sweeper 2 frequency.
12.If the resolution bandwidth is ≥1 kHz, press SPAN, 4 kHz.
13.On the synthesized sweeper 2, set the RF On.
14.On the analyzer, press Peak Search (or Search).
15.Adjust the power level of synthesized sweeper 2 until the marker
delta (∆ Mkr1) amplitude reads 0 dB ±0.05 dB.
16.On the analyzer, press FREQUENCY, ↓, ↓. The center frequency
should now be lower than synthesized sweeper 1 by the CF Step
value.
17.Set the analyzer reference level to –15 dBm.
18.On the analyzer, press BW/Avg, Average, 20, and wait for “Vavg 20”
to appear along the left side of the display.
19.On the analyzer, press Peak Search (or Search) and record the marker
amplitude reading in Table 2-75 as the Lower Distortion Amplitude.