152 Chapter 4
ESA Functional Tests
Resolution Bandwidth Switching Uncertainty
ESA Functional Tests
Figure 4-5 Equipment Se tup
Procedure
NOTE The 50 MHz reference output will automatically be switched internally on the
E4401B and E4411B and will not require any external connections. All other
ESA analyzers require that the AMPTD REF OUT be connected to the
INPUT to perform this test.
1. Press System, Power On/Preset, Preset Type (Factory), Preset on the analyzer . Wait for the
preset routine to finish. Set the analyzer by pressing the following keys:
Input/Output, Amptd Ref (On) (E4401B and E4411B)
Input/Output, Amptd Ref Out (On) (E4402B, E4403B, E4404B, E4405B, E4407B, and
E4408B).
Connect a cable from the AMPTD REF OUT to the INPUT 50 Ω, as shown in Figure4-5
(E4402B, E4403B, E4404B, E4405B, E4407B, and E4408B).
FREQUENCY, 50, MHz
SPAN, 50, kHz
AMPLITUDE, More, Y Axis Units, dBm (75 Ω Input only)
AMPLITUDE, –20, dBm
AMPLITUDE, Scale/Div, 1, dB
BW/Avg, Res BW, 1, kHz
Video BW, 1, kHz
2. Press AMPLITUDE and use the knob to adjust the reference level until the signal appears
five divisions (mid-screen) below the reference level. Press the following keys on the
analyzer:
Peak Search
Marker, Delta
FREQUENCY, Signal Track (On)
3. Set the analyzer Resolution Bandwidth and Span according to Table 4-6 on page153.
4. Press Peak Search, then record the ∆ Mkr 1 amplitude reading in Table 4-6.