Product specifications

8
Designed for R&D
Optimum measurement accuracy and repeatability
means confidence in your power measurements
The EPM series power meters maintain the high accu-
racy standard set by the Agilent 437B and 438A—
being designed to have excellent linearity.
Instrumentation absolute accuracy, due to the
meter electronics, is specified to be +0.02 dB in
logarithmic mode and +0.5% in linear mode—mak-
ing this source of error a negligible part of the
overall measurement uncertainty.
In RF and microwave power measurements, the
largest errors are caused by:
• Sensor and source mismatch, and
• Sensor frequency response, non-linearity,
and temperature characteristics.
To minimize the mismatch error, the E-series
sensors have a low VSWR specification. To
provide comprehensive error correction, the
calibration factors, linearity and temperature
error correction information are stored in
EEPROM. Error correction is performed with-
in the power meter. Frequency data is entered
by the user. Taking account of the signal level,
the frequency being measured, and the tem-
perature, appropriate correction values are
applied to the measurement. This error correc-
tion process ensures optimum measurement
accuracy and repeatability over the full 0 to
55˚C temperature range.
User friendly interface for quick setup times
The power meter has an intuitive user interface.
Hardkeys for the most frequently used functions
and softkey menus simplify configuring the power
meter for your particular measurement needs. To
reduce repeated setup sequences, the SAVE/RECALL
menu allows you to save up to 10 instrument
configurations.
With the E4419B, ratio and difference measurements can be
made. Here the upper half of the display shows the gain of a
GSM amplifier while the lower half of the display shows the B
Channel absolute power measurement in dBm.