Power Sensor Specifications - Agilent Technologies E4418B User Manual

Specifications
Power Meter Supplemental Characteristics

Power Sensor Specifications

Definitions
Zero Set
In any power measurement, the power meter must initially be set to zero with no
power applied to the power sensor. Zero setting is accomplished within the power
meter by digitally correcting for residual offsets.
Zero Drift
This parameter is also called long term stability and is the change in the power meter
indication over a long time (usually one hour) for a constant input power at a constant
temperature, after a defined warm-up interval.
Measurement Noise
This parameter is also known as short term stability and is specified as the change in
the power meter indication over a short time interval (usually one minute) for a
constant input power at a constant temperature.
5-12 Agilent E4418B User's Guide