User`s guide

4 Making Measurements
46 N9340A User’s Guide
Resolving Signals of Equal Amplitude
In this example a decrease in resolution bandwidth
is used in combination with a decrease in video
bandwidth to resolve two signals of equal
amplitude with a frequency separation of 100 kHz.
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 below.
Figure 3
Frequency
Enter
7
MOD
On/Off
RF
4
1
0
2
9
6
3
On/Off
Amplitude FM
Utility
LF Out
Preset
Loc al
AMI/Q
File
TriggerPulseM
·
Swe ep
8
5
Rem o te
Standb y
On
N 9310 A RF Signa l G e n er a to r 9 kHz - 3.0 GH z
REVERSE PWR
4W MAX 30VDC
LF OU T RF O U T 5 0
FUN CTIONS
Frequency
Enter
7
MOD
On/Off
RF
4
1
0
2
9
6
3
On/Off
Am p litude FM
Utility
LF O u t
Pre se t
Lo c a l
AM I/Q
File
TriggerPulseM
·
Swee p
8
5
Remote
Standby
On
N 9310 A RF Signal G en er a t o r 9 kH z - 3.0 G H z
REVERSE PWR
4W MAX 30VDC
LF OU T RF OUT 50
FUN CTIONS
Directional
coupler
Signal generator
Signal generator
Setup for obtaining two signals
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].
• Press [FREQ] > {Center Freq} > 300 > {MHz}.
• Press [BW/SWP] > {RBW} > 300 > {kHz}.
• Press [SPAN] > {Span} > 2 > {MHz}.