Boonton 4540 Peak Power Meter Quick Start - Manual (Page 40)

4540 Power Meter
Quick Start Guide
PN: 98406000A © Copyright 2008 Boonton Page 40
GLOSSARY
CCDF
Complementary Cumulative Distribution Function. Statistical Method to measure
power of noise like signals, which have no pulse characteristic and offer no trigger
event. This method compares probability in percent of signals that are lower than the
highest measurement value. 4540 can sample a high number of data over a very
long time to ensure virtually all occurring power levels are considered.
Distal:
Point defining the rising edge of a pulse, usually at 90% of the pulse top level
amplitude.
Edge delay:
The time between the left edge of the display and the first mesial transition level of
either slope on the waveform. The edge delay is the time from the trigger to the first
displayed edge transition. This transition takes place at the mesial point.
Fixed Calibration
Term commonly used for sensor calibration at 0dBm – 1mW.
Mesial:
The point defining the horizontal center of the pulse, commonly used to measure the
pulse width; usually at 50% of the pulse top level amplitude.
Peak power:
Maximum power level of the captured waveform.
Proximal:
The point defining the start of a pulse, usually at 10% level of the pulse top level
amplitude.
Pulse off-time
The time a repetitive pulse is off. It is equal to the pulse period minus the pulse
width.
Relative Offset Range ±100.00 dB
Used to compensate for attenuators or amplifiers inserted between the sensor and
the device under test. If the signal is too high and needs to be attenuated by 10dB,
an offset value of +10dB is input so that the meter gives the correct reading.
Vernier
:
Fine adjustment to the pulse signal.