Agilent Technologies 71501D Manual de usuario descargar pdf (Pagina 143)

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Eye-Diagram Analyzer Reference

Agilent 70820A Calibration

Matching Delay Between Channels

Significant delays can occur between the signals on channel 1 and channel 2

when the electrical lengths of external cabling varies. This results in a phase

offset between the two channels. The microwave transition analyzer module

offers the capability to add delay to either channel 1 or channel 2.

The following figure shows added delay on channel 2.

Use the AUTO SKEW softkey to automatically compensate the delay on chan-

nel 2. Automatic skewing assumes two equal phase signals input to channels 1

and 2. If measurements are to be performed at multiple frequencies, it is rec-

ommended that the AUTO SKEW function be performed first at a low fre-

quency and then at higher frequencies to ensure better resolution.

Delay can be manually compensated using the CHAN2 SKEW softkey. For

convenience, the SEC/DIV softkey is provided so that the time scale can be

changed.

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Agilent Technologies 71501D Manual de usuario Pagina 143