User`s guide

Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide 117
Optimizing Performance
Using the Frequency and Phase Reference Softkeys
signal generator displays f
RF
.
Using the Frequency and Phase Reference Softkeys
The MXG can be set to have either a user- determined frequency or phase reference.
Figure 5-26 Frequency Reference and Frequency Offset Softkeys
Using Free Run, Step Dwell, and Timer Trigger
Free Run, Step Dwell (time), and Timer Trigger can be used to adjust the time spent at any point in
a Step Sweep or a List Sweep. There are two possible measurement combinations:
Free Run with Step Dwell time (Figure 5- 27 on page 119) the signal generator waits for the signal to
settle and then waits for the Step Dwell time, then it jumps to the next frequency point. In addition,
the time to complete the entire sweep can vary. There is always a minimum value of Step Dwell for
each frequency point. The minimum Step Dwell timing for any point is fixed at a value of 100 us. The
time between frequency points is the sum of the settling time, plus the Step Dwell time. The settling
time is dependent on frequency, amplitude, band crossings, and other factors, so the time between
frequency points can vary.
Mixer
Signal Generator
(local oscillator)
f
LO
= 800 − 600 MHz
f
IF
= 3000 MHz
Selected
Multiplier
−1
−1
Signal Generator
Output (f
LO
)
800 MHz
600 MHz
f
RF
= 2200 – 2400 MHz
Selected
Offset
3000 MHz
3000 MHz
Entered/Displayed
Frequency
(f
RF
)
2200 MHz
2400 MHz