Operation and Service Guide 1
Keysight E4412A and E4413A Operating and Service Guide 19
General Information
Warranty
The power sensors are warranted and certified as indicated on the inside cover of
this manual.
Instruments covered by manual
These instruments have a two-part serial number: the prefix (two letters and the
first four numbers), and the suffix (the last four numbers). The two letters identify
the country in which the unit was manufactured. The four numbers of the prefix
are a code identifying the date of the last major design change incorporated in
your Keysight Technologies product. The four-digit suffix is a sequential number
and, coupled with the prefix, provides a unique identification for each unit
produced. The contents of this manual apply directly to all serial numbers unless
otherwise indicated.
Description
The E4412A and E4413A power sensors are diode power sensors. They are
intended for measurement of CW microwave power levels in a wide dynamic
range from -70 dBm to +20 dBm (100 pW to 100 mW). The E4412A measures at
frequencies from 10 MHz to 18.0 GHz. The E4413A measures at frequencies from
50 MHz to 26.5 GHz. These are high-speed power sensors, and do not incorporate
narrow-bandwidth averaging used in average-power sensors. Signals with digital,
pulse, or other forms of amplitude modulation may introduce measurement errors.
Multi-tone signals (containing multiple frequency components), or signals with
significant harmonic content (> -45 dBc) may introduce measurement errors at
high power levels. (Specifications for the power sensors are in the datasheet).
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