User`s guide

114 Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide
Optimizing Performance
Using an Output Offset, Reference, or Multiplier
• Amplitude: Press Amptd > More > Amptd Offset > offset value > dB.
Examples
When using the signal generator as a local oscillator (LO), you can use the offset to display the
frequency of interest, as illustrated below:
Setting an Output Reference
Using an output reference, the signal generator can output a frequency or amplitude that is offset
(positive or negative) by the entered value from a chosen reference value.
RF Output = reference value + entered value
To set a reference:
1. Set the frequency or amplitude to the value you want as the output reference level.
2. Frequency: Press Frequency > Freq Ref Set
The frequency displays 0.00 Hz, indicating that this is the RF output frequency “zero level.”
Parameter
Example
#1
Example
#2
Example
#3
Comments
Entered (and displayed) Value: 300 MHz 300 MHz 2 GHz The entered value must be positive.
Offset: 50 MHz −50 MHz −1 GHz An offset value can be positive or negative.
Output Frequency: 250 MHz 350 MHz 3 GHz
The signal generator alerts you if the
output frequency or amplitude is out of range.
Indicates that an offset is on
IF Amplifier
RF Amplifier
Mixer
Filter
Signal Generator
(local oscillator)
Output Frequency = 1000 MHz
IF = 321 MHz
Antenna tuned to 1321 MHz
Selected Offset
321 MHz
−679 MHz
SIgnal Generator Display
1321 MHz (Antenna Frequency)
321 MHz (IF Output)
IF Output
321 MHz