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Appendix B: Automatic Measurements Reference
CSA8000B & TDS8000B User Manual
B-55
Non-Return -to-Zero (NRZ) Measurements - Area
Table B--9 topic describes each NRZ measurement in the area category. See
Table B--7 on page B--37 for amplitude category measurements.; see Table B--8
on page B--50 for timing category measurements.
Table B- 9: NRZ Measurements - Area
Name Definition
NRZ Area The area under the curve for the NRZ waveform within the measurement region. Area
measured above ground is positive; area measured below ground is negative.
over the m easurement region.
If enabled, measurement gates constrain the measurement region to the area between the Start
Gate (G1) and Stop Gate (G2). See To Localize a Measurement on page 3--83.
When this measurement is turned on, it will automatically set the measurement system to use a
waveform database if available. See Use a Waveform Database on page B--70.
For best result s with t his measurement:
H Perform a Dark Level compensati on before taki ng this m easurement if the source of the
measured waveform is an optical channel. See To Perform Dark-Level and User
Wavelength Gain Compensations on page 3--98.
H Optimize the vertical resolution before taking this measurement. See To Optimize the
Vertical Resolution on page B--69.
NRZ Area =
ጺ
waveform(t) dt,
NRZ Cycle Area The area under the curve f or the first NRZ bit time within the measurement region. Area
measured above ground is positive; area measured below ground is negative.
over the first NRZ bit within the measurement region.
When this measurement is turned on, it will automatically set the measurement system to use a
waveform database if available.
For best result s with t his measurement:
H Perform a Dark Level compensati on before taki ng this m easurement if the source of the
measured waveform is an optical channel. See To Perform Dark-Level and User
Wavelength Gain Compensations on page 3--98.
H Optimize the vertical resolution before taking this measurement. See To Optimize the
Vertical Resolution on page B--69.
NRZ Area =
ጺ
waveform(t) dt,