Agilent Technologies E1401-90493 User Manual Page 126

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126 Chapter 2
Performance Verification Tests
16. Resolution Bandwidth Switching Uncertainty
Input/Output (or Input), Amptd Ref (On) (Agilent E4401B, E4411B)
Input/Output (or Input), Amptd Ref Out (On) (Agilent E4402B,
E4403B, E4404B, E4405B, E4407, E4408B)
FREQUENCY, Center Freq, 50 MHz
SPAN
, 5kHz
AMPLITUDE
, More, Y Axis Units (or Amptd Units), dBm
AMPLITUDE, –25 dBm (Agilent E4401B, E4411B)
AMPLITUDE, –19 dBm (Agilent E4402B, E4403B, E4404B, E4405B,
E4407B, E4408B)
AMPLITUDE, Scale/Div
, 1dB
BW/Avg
, 1kHz
BW/Avg, Video BW, 300 Hz
3. Press
AMPLITUDE and use the knob to adjust the reference level until
the signal appears five divisions below the reference level, then press
the following keys:
Peak Search (or Search)
Marker, Mkr CF
Marker, Delta
4. Set the analyzer span and resolution bandwidth according to
Table 2-28.
5. Press
Peak Search (or Search), Marker, Mkr CF, Peak Search (or
Search) then record the marker delta amplitude reading in the
performance verification test record as indicated in Table 2-28.
6. Repeat step 4 and step 5 for each of the remaining resolution
bandwidth and span settings listed in Table 2-28.
Table 2-28 Resolution Bandwidth Switching Uncertainty
Analyzer Settings
Marker Delta
Amplitude
Reading
RES BW SPAN Test Record Entry
1 kHz 5 kHz 0 (Ref)
3 kHz 10 kHz 1)
9 kHz
a
50 kHz 2)
10 kHz 50 kHz 3)
30 kHz 100 kHz 4)
100 kHz 500 kHz 5)
120 kHz
a
500 kHz 6)
300 kHz 1 MHz 7)
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