258 Chapter 2
Performance Verification Tests
30. Spurious Responses: Agilent E4401B and E4411B
frequency into the power meter.
7. Adjust the amplitude of the signal generator until the power meter
reads –12 dBm ±0.1 dB.
75 Ω Input only: The power measured at the output of the 50 Ω
directional bridge by the 75 Ω power sensor is the equivalent power
“seen” by the 75 Ω analyzer.
8. Disconnect the power sensor from the directional bridge. Connect
the directional bridge directly to the analyzer input using an adapter
(do not use a cable).
75 Ω Input only: Use a 50 Ω to 75 Ω mechanical adapter and a 75 Ω
Type-N(m) to BNC(m) adapter.
CAUTION Support the directional bridge 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 2-69. 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 (50 Ω Input only)
AMPLITUDE, Ref Level, –10 dBm (75 Ω Input only)
AMPLITUDE, Attenuation, 5 dB (Man) (50 Ω Input only)
AMPLITUDE, Attenuation, 0 dB (Man) (75 Ω Input only)
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)
Meas Tools
Mkr → CF, Delta
11.On the analyzer, press FREQUENCY, ↑.
12.If the resolution bandwidth is ≥1kHz, press SPAN, 4 kHz.
13.On the synthesized sweeper, set the RF On.
14.On the analyzer, press Peak Search (or Search).
15.On the synthesized sweeper, adjust the power level 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 the signal generator frequency by the CF
Step value.