Agilent Technologies E1401-90493

300 Chapter 2

Performance Verification Tests

35. Displayed Average Noise Level: Agilent E4401B and E4411B

Figure 2-53 Displayed Average Noise Level Test Setup

2. Press System, More, Show System. If there is an entry shown which

reads 1DR: Narrow Resolution BW and the analyzer is an E4401B,

then enter 10 Hz below as the Minimum RBW. If there is an entry

shown which reads 1DR: Narrow Resolution BW and the analyzer

is an E4411B, then enter 100 Hz below as the Minimum RBW.

Otherwise, enter 1 kHz as the Minimum RBW (resolution

bandwidth). Keep this value in mind as you continue to perform this

procedure. Also, take note of whether or not Options 1DN or 1DQ

(1.5 GHz Tracking Generator) and Option 1DS (RF Preamplifier) are

installed.

Minimum RBW____________ Hz

Option 1DN or 1DQ: ____________

Option 1DS: ____________

3. On the analyzer, press Preset. Press the Factory Preset softkey, if it is

displayed. Then press the following keys:

Input/Output (or Input), Amptd Ref (On)

FREQUENCY, Center Freq, 50 MHz

SPAN, 2kHz

AMPLITUDE, –25 dBm (50 Ω Input only)

AMPLITUDE, 28.75 dBmV (75 Ω Input only)

AMPLITUDE, Attenuation, 10 dB

BW/Avg, Res BW, 1 kHz

BW/Avg, Video BW, 1 kHz

Det/Demod, Detector, Sample

4. On the analyzer, press Single, Peak Search (or Search) and record the

Ref Amptd reading below.

Ref Amptd ____________ dBm (50 Ω Input only)

Ref Amptd ____________ dBmv (75 Ω Input only)

5. If the analyzer does not have Option 1DN or 1DQ (1.5 GHz Tracking