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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.