User`s guide

34 N9320A Spectrum Analyzer
3 Functions and Measurements
Resolving Signals of Equal Amplitude
In this example a decrease in the resolution bandwidth
(RBW) is used in combination with a decrease in video
bandwidth (VBW) to resolve two signals of equal amplitude
with a frequency separation of 100 kHz.
Figure 4 Setup for obtaining two signals
Notice that the final RBW selection to resolve the signals is
the same width as the signal separation while the VBW is
slightly narrower than the RBW.
1 Connect two sources to the analyzer input as shown above.
2 Set one source to 300 MHz. Set the frequency of the other
source to
300.1 MHz. Set both source amplitudes to –20 dBm.
3 Setup the analyzer to view the signals:
Press > Preset (With Preset Type of Factory)
Press > 300 > MHz
Press > 300 > kHz
Press > 2 > MHz
A single signal peak is visible. See Figure 5 for example.
Remo t e
Standby
On
TG SOURCE CAL OUT
50MHz 10dBm
7
·
4
1
0
2
5
89
6
3
Back
Enter
Marker
Peak
Search
Marker
Auto
Tune
Det/
Display
File/
Print
BW/
Avg
View/
Trace
Meas
MODE
Sweep/
Trig
Local
Save
N9320A SPECTRUM AN ALYZER 9 kHz - 3.0 GHz
PROBE POWER
RF IN 50
50VDC MAX
30dBm 1W MAX
CAT
Frequency
Enter
7
MOD
On/Off
RF
4
1
0
2
9
6
3
On/Of f
Amplitude
FM
Utility
LF Out
Preset
Local
AM I/Q
File
TriggerPul seM
·
Sweep
8
5
Remot e
Standby
On
N9310A RF Signal Generator 9 kHz - 3.0 GHz
REVERSE PWR
4W MAX 30VDC
LF OU T RF OU T 5 0
FUNCTION S
Frequency
Enter
7
MOD
On/Of f
RF
4
1
0
2
9
6
3
On/Off
Amplitude FM
Utility
LF Out
Preset
Local
AM I/Q
File
TriggerPulseM
·
Sweep
8
5
Remot e
Standby
On
N9310A RF Signal Generator 9 kHz - 3.0 GHz
REVERSE PWR
4W M AX 30 VD C
LF OUT RF OUT 50
FUN CT IO N S
Signal Generator
Signal Generator
Spectrum Analyzer
Directional Coupler
RF OUT
RF IN
RF OUT
Preset/
System
Frequency
BW/
Avg
SPAN