Agilent X-Series Signal Generators User’s Guide 125
Optimizing Performance
Using an Output Offset, Reference, or Multiplier
When using the signal generator as the input to a system, you can set the frequency multiplier so
that the signal generator displays the output of the system, as illustrated below using a doubler:
When measuring mixers, the frequency multiplier and frequency offset are often used together. In the
upconverter example below, the multiplier is set to −1 and the offset is set to 3 GHz so that the
signal generator displays f
RF
.
Output Frequency: 200 MHz 200 MHz 2 GHz
The signal generator alerts you if the output frequency is
out of range.
Parameter
Example
#1
Example
#2
Example
#3
Comments
Signal Generator Doubler
Output = 4 GHz
X2
Input = 2 GHz
Selected
Multiplier
2
Signal Generator
Output
2 GHz
Entered/Displayed
Frequency
4 GHz
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
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