parameter units
Standard units of measure, which include the following:
Measured | Unit | Unit | |
Parameter | Name | Abbreviation | |
frequency | hertz | HZ | |
power | level | decibel relative to milliwets | dBm |
power | ratio | decibel | dB |
voltage |
| volt | v |
time |
| second |
|
electrical current | ampere | ii | |
impedance [resistance] | ohm | n |
peak detection mode
The analyzer state where circuits calculate the peak value of a displayed signal. This value is determined by evaluating a series of measured values from an active trace.
peak detector
A detector that follows the peak or envelope of the signal applied to it. The standard detector in an analyzer is typically a peak detector.
percent amplitude modulation
A measure of the amount of amplitude modulation on a signal. The measurement value is a comparison of the power in the modulation signal to the power in the signal being modulated. Percent amplitude modulation can be calculated as follows, where dB is the ratio of the power of the signal to the power of the amplitude modulation sidebands
persistence
See CRT persistence.
personality
Applications available on a memory card or other electronic media that extends the capability of an instrument for specific uses. Examples include digital radio personalities and cable TV personalities.
Glossary- 19