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Source (Internal)
RF Power Range
Set Reference Power
This key allows you to set the power reference. Pressing this key turns the power reference state to ON,
sets the reference power value to the current RF output power, maintains this power at the RF output, and
sets the displayed power to 0.00 dB. All subsequent RF power values entered under
Source>Amplitude>RF Power are interpreted as being relative to this reference power.
When you use a power reference, the signal generator outputs an RF power that is set relative to the
reference power by the value entered under Source>Amplitude>RF Power as follows:
Output power = reference power entered power
Where:
reference power equals the original RF Power entered under Source>Amplitude>RF Power and set as
the reference power
entered power equals a new value entered under Source>Amplitude>Amptd Offset
In addition, the displayed power value is the same as a new value entered under Source>Amplitude>RF
Power.
NOTE If Power Ref is set to ON with a reference value set, entering a value under
Source>Amplitude>RF Power and pressing Set Reference Power will add that
value to the existing Power Ref value.
If you wish to change the reference power value to a new value entered under
Source>Amplitude>RF Power, first you must set Power Ref to OFF and then press
Set Reference Power.
Dependencies: The RF power is dependent on the RF output port and frequency, such that the
current frequency and selected output port determine the valid range of power
values.
Preset: –100 dBm
Min: The range of values depends on the current frequency and selected RF output
port. Please refer to the “RF Power Range ” on page 1139 table below for the
valid ranges.
Max: The range of values depends on the current frequency and selected RF output
port. Please refer to the “RF Power Range ” on page 1139 table below for the
valid ranges.
Initial S/W Revision: A.05.00
RF Output Port Frequency Range Min Output Power Max Output Power
High Power RF Out 10 MHz ≤ f ≤ 6 GHz –130 dBm 20 dBm
RFIO 1 & RFIO 2 10 MHz ≤ f ≤ 6 GHz –130 dBm 0 dBm