Chapter 2 181
Front-Panel Key Reference
Source
Source
Accesses the tracking generator key functions (Options 1DN or 1DQ
only). Without Option 1DN or 1DQ, pressing
Source will cause the error
message Option not installed to appear on the analyzer display.
CAUTION If Auto Align is on, the 3 GHz tracking generator will be momentarily
retuned to approximately 1.557 GHz between most sweeps. Some
devices under test (for example, amplifiers with AGC) may be
susceptible to damage due to this momentary retuning. To avoid this
momentary retuning, turn the auto align off by pressing
System,
Alignments, Auto Align, Off. Refer to the Specifications Guide for your
instrument to learn more information about using the analyzer with
Auto Align set to off.
Amplitude
On Off
Activates (On) or deactivates (Off) the output power of the tracking
generator. The power level can then be adjusted using the numeric
keypad, step keys, or knob. Pressing any digit, 0 through 9, on the
numeric keypad brings up the selected terminator menu. See the
specifications chapter in the calibration guide for the available output
power for your tracking generator.
Key Access:
Source
CAUTION When the source attenuation is set manually, the actual source
amplitude may be greater than the amplitude indicated by the source
amplitude. With source attenuation set to manual, source amplitude is
permitted to be set to values beyond output levels to accommodate the
full range of the analyzer capabilities. As a result, exercise caution
when connecting a power-level sensitive device to the tracking
generator output
NOTE For spectrum analyzers with Option 1DN or Option 1DQ, the tracking
generator must be turned on (
Source, Amplitude (On)) before you set up
the segmented sweep table.
NOTE When Amplitude (Off) is selected, the output attenuation on the Agilent
E4402B, E4403B, E4404B, E4405B, E4407B, and E4408B is set to the
maximum attenuation.
Power Sweep
On Off
Sets the power-sweep function to On or Off. The value of the
power-sweep range is displayed in the active-function block when you
press
Power Sweep (On). The analyzer continues to sweep the specified
frequency range when power sweep is on. (To do a power sweep at a
fixed frequency, set the analyzer to zero span at the desired frequency.)
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