Keysight E8740A-060 Start-up Guide
9
Full Span Measurements with the N9041B
Viewing the noise floor of the N9041B
The following steps shows you how to inspect the full span noise floor of the
N9041B.
Step
Action
Notes
1
Reset the analyzer.
a
Tap the green
Preset
icon and select
Full Mode Preset
.
b
Press
OK
when the warning dialog
message appears.
2
Set the input port to RF2.
a
Select the
Input/Output
panel or press
the
Input/Output
hard key and select
the
Input
tab.
b
Tap
RF Input Port
and select
RF2
.
3
Set the frequency range to full span.
a
Select the
Frequency
panel or press
the
FREQ
hard key.
b
Tap the
Full Span
control.
4
Set the full range input attenuation to
zero.
a
Select the
Amplitude
panel or press
the
AMPTD
key.
b
Select
Attenuation
tab and tap the
Full Range Atten
control. Enter 0 dB
using the soft numeric keypad.
c
Tap the
Mech Atten
control and enter
0 dB with the numeric keypad.
The
Full Range Atten
is a mechanical
attenuator at the input of RF2 port while
the
Mech Atten
is at the input of the
50 GHz RF1 port.
5
Turn on the Full Range PreAmp.
a
Select the
Signal Path
tab.
b
Tap the
Internal Preamp
control and
select
Full Range
from the drop down
list.
c
Toggle the
On/Off
switch to
On
.
6
Change the detector type to
Average
.
a
Select the
Trace
panel.
b
Select the
Detector
Ttab and select
the
Average (Log/RMS/V)
button.
By default, the average detector type
should have been set to rms. If there is a
need to change the average type, go to
step 7.
Содержание E8740A-060
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Страница 11: ...Keysight E8740A 060 Start up Guide 11 Figure 1 Average noise density marker noise at 79 GHz Step Action Notes...
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