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Performance Tests – Option 011
5. Receiver Channel Noise Floor Level (Only for Analyzers without Option 006)
Figure 6-7. Receiver Channel Noise Floor Level Test Setup
2
Press
PRESET
,
MENU
,
POWER
,
–10
,
x1
.
Receiver Channel A Noise Floor Level with a 3 kHz IF BW
3
Press
MEAS
,
INPUT PORTS
,
A
,
FORMAT
,
LIN MAG
,
SCALE REF
,
AUTO SCALE
.
4
Press
MARKER FCTN
,
MARKER MODE MENU
,
STATS ON
,
MENU
,
TRIGGER MENU
,
SINGLE
.
5
When the analyzer finishes the sweep, notice the mean value, which appears on
the analyzer display.
6
Use the following equation to convert the linear magnitude mean value to log
amplitude:
Power (dBm) = 20 * [log
10
(linear magnitude mean value)]
7
Write this calculated value in the “Performance Test Record” in dBm.
Receiver Channel A Noise Floor Level with a 10 Hz IF BW
8
Press
AVG
,
IF BW
,
10
,
x1
to change the IF bandwidth to 10 Hz.
9
Press
MENU
,
TRIGGER MENU
,
SINGLE
.
10
When the analyzer finishes the sweep, notice the mean value, which appears on
the analyzer display.