Specifications

Chapter 1 1-3
Overview
Description
If the instrument preamp is “ON” and sweeping from below 3 GHz to above 3 GHz, the
instrument will automatically switch the highband preamp to the “ON” state above 3 GHz.
Refer to Figure 1-1.
Figure 1-1 Lowband vs. Highband Frequency Diagram for E4440A
1
* The “3.05 GHz” switch point occurs when sweeping from below 3 GHz
to above 3 GHz. The highband preamp low frequency point is extended
down to 3.0 GHz if the start frequency is set to 3.0 GHz.
NOTE Please note that in Full Band Sweep, Retrace time has been increased to
reduce relay wear at band-cross. To reduce the retrace time, sweep
completely in either side of the band-cross frequency.
CAUTION Excessive Relay Switch wear can occur if the instrument is sweeping
from below 2.85 GHz and the Stop Frequency is above 3.05 GHz.
To find descriptions of specific analyzer functions refer to the Agilent Technologies PSA
Spectrum Analyzers User’s and Programming Reference Guide.
1. See Table 1-1, “Preamp frequency range” for other model numbers.