308 Chapter 2
Performance Verification Tests
35. Displayed Average Noise Level: Agilent E4401B and E4411B
AMPLITUDE, More, Ref Lvl Offst, (enter Ref Lvl Offset (100 Hz/10
Hz) if test RBW = 10 Hz or 100 Hz)
AMPLITUDE, More, Int Preamp (Off) (if preamp state = Off)
AMPLITUDE, More, Int Preamp (On) (if preamp state = On)
BW/Avg, Res BW, 1 kHz (if test RBW = 1 kHz)
BW/Avg, Res BW, 100 Hz (if test RBW = 100 Hz)
BW/Avg, Res BW, 10 Hz (if test RBW = 10 Hz)
BW/Avg, Video BW, 30 Hz (if test RBW = 1 kHz)
BW/Avg, Video BW, 1 Hz (if test RBW = 100 Hz or 10 Hz)
3. On the analyzer, press Single and wait for a new sweep to complete.
4. On the analyzer, press Display, Display Line (On). Adjust the display
line so that it is centered on the average trace noise, ignoring any
residual responses (refer to the Residual Responses verification test
for any suspect residuals).
Remove Reference Level Offset
1. Press AMPLITUDE, More, Ref Lvl Offst, 0 dB.
2. On the analyzer, press Preset.
3. This performance test is now complete.