Source User’s Guide 23
Optimizing Performance
Using an Output Offset and Reference
Setting an Output Reference
Using an output reference, the source 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 Input/Output, RF Source, Frequency Setup, Set
Reference Frequency. The frequency displays 0.00 Hz, indicating that this
is the RF output frequency “zero level.”
All frequencies entered are interpreted as being relative to this reference
frequency.
Amplitude: Press Input/Output, RF Source, Amplitude Setup, Set
Reference Power.
The amplitude displays 0.00 dB, indicating that this is the RF output
amplitude “zero level.”
All amplitudes entered are interpreted as being relative to this reference
amplitude.
Examples
To set a new frequency or amplitude reference, turn the frequency reference
off, and then follow the steps above.
Parameter
Example
#1
Example
#2
Example
#3
Comments
Reference: 50 MHz 50 MHz 2 GHz A reference value must be positive.
Entered (and
displayed) Value:
2 MHz 2 MHz 1 GHz The entered value can be positive or negative.
Output Frequency: 52 MHz 48 MHz 1 GHz
The source alerts you if the output frequency
or amplitude is out of range.
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