Agilent Technologies N9342C, User Manual

Page: 42 / 179

3 Functions and Measurements
34 N9342C/43C/44C 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 selected 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 3-3
Frequency
Ent er
7 M OD
On/ Off
RF
4
1
0
2
9
6
3
On/ Off
Amplit ude FM
U tility
LF Out
Preset
Local
AM I/Q
File
Trig ger
Pulse M
·
Sw eep
8
5
Remot e
Standby
On
N 9310A RF Signal Generator 9 kHz - 3.0 GHz
REVERSE PW R
4W M AX 30VDC
LF OUT RF OU T 50
FUN CTION S
Frequency
Enter
7 M OD
On/ Off
RF
4
1
0
2
9
6
3
On/ Off
Am plitude FM
Ut ility
LF Out
Preset
Local
AM I/ Q
File
Trigger Pulse M
·
Sw eep
8
5
Rem ote
Standby
On
N9310A RF Signal Generator 9 kHz - 3.0 GHz
REVERSE PWR
4 W MA X 30 VD C
LF OUT 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] > 300.05 > {MHz}
•
Press
[SPAN] > 2 > {MHz}
•
Press
[BW] > 30 > {kHz}
Use the knob or the arrow keys to further reduce
the resolution bandwidth and better resolve the
signals.