304 Chapter 2
Performance Verification Tests
35. Displayed Average Noise Level: Agilent E4401B and E4411B

Table 2-81 DANL Measurement Sequence, E4401B

50 Inputs
Subset Procedure
Procedure Parameters Test
Record
Entry
Start
Freq
Stop
Freq
Test
RBW
Preamp
State
A Meas. DANL at 400 kHz N/A N/A 1 kHz Off 1)
Measure DANL 1 MHz 10 MHz 1 kHz Off 2)
Measure DANL 10 MHz 500 MHz 1 kHz Off 3)
Measure DANL 500 MHz 1 GHz 1 kHz Off 4)
Measure DANL 1 GHz 1.5 GHz 1 kHz Off 5)
B Meas. DANL at 400 kHz N/A N/A 1 kHz On 6)
Measure DANL 1 MHz 10 MHz 1 kHz On 7)
Measure DANL 10 MHz 500 MHz 1 kHz On 8)
Measure DANL 500 MHz 1 GHz 1 kHz On 9)
Measure DANL 1 GHz 1.5 GHz 1 kHz On 10)
C Meas. DANL at 400 kHz N/A N/A 10 Hz Off 11)
Measure DANL 1 MHz 10 MHz 10 Hz Off 12)
Measure DANL 10 MHz 500 MHz 10 Hz Off 13)
Measure DANL 500 MHz 1 GHz 10 Hz Off 14)
Measure DANL 1 GHz 1.5 GHz 10 Hz Off 15)
D Meas. DANL at 400 kHz N/A N/A 10 Hz On 16)
Measure DANL 1 MHz 10 MHz 10 Hz On 17)
Measure DANL 10 MHz 500 MHz 10 Hz On 18)
Measure DANL 500 MHz 1 GHz 10 Hz On 19)
Measure DANL 1 GHz 1.5 GHz 10 Hz On 20)

Table 2-82 DANL Measurement Sequence, E4411B

50 Inputs
Subset Procedure
Procedure Parameters Test
Record
Entry
Start
Freq
Stop
Freq
Test
RBW
Preamp
State
A Meas. DANL at 400 kHz N/A N/A 1 kHz Off 1)
Measure DANL 1 MHz 10 MHz 1 kHz Off 2)