User`s guide

Delete this Plot Button - Clicking on button will delete the selected plot.
Deskew Calibration - Measures the difference between the channel paths in order to zero out those differences when
taking a measurement. GigiView™ has two Deskew calibration buttons. The Deskew Calibration button will guide
the user through the measuring of the channel paths (AC channel calibration). The Deskew with DC Cal button will
guide the user through both the AC calibration as well as DC calibrations. The DC calibration zeros out any DC
difference between the channel inputs. See Appendix C for a complete explanation of all calibration features.
Deterministic Jitter (DJ) - Jitter with non-Gaussian probability density function. Deterministic jitter is always bounded
in amplitude and has specific causes. Four kinds of deterministic jitter are identified: duty cycle distortion (DCD),
data dependent (DDJ), sinusoidal (PJ) and bounded uncorrelated (BUJ) (to the data) jitter. DJ is characterized by its
bounded, peak-to-peak value. Some typical causes of DJ are: crosstalk, switching power supplies and EMI.
Device Name (UNIX only) - The UNIX Device Name selection is not used at this time.
Diagnostic FFT - No FFT - The 1-sigma or FFT plots will not be available.
Fc/1667 - The FFT frequency band will be determined by dividing the bit rate by 1667. This
selection will also display the 1-sigma plot as well as the FFT plot. For 1X Fibre, Fibre
Channel, the –3db HPF is 637 KHz.
User Defined - Users have the ability to input a –3db HPF Frequency for the FFT plot. When a
frequency is entered, the "corner Freq (kHz)" window becomes active and this is
where you enter the frequency. By selecting "User defined", you will get a 1-sigma
plot. The FFT frequency band will be from the Nyquist frequency down to this
frequency.
Dialog Bar - Contains tool-specific parameter options.
Dialog Bar command (Display menu) - Use this command to display or hide the Dialog Bar, which provides a means
of adjusting acquisition and display options. A check mark appears next to the menu item when the Dialog Bar is
displayed.
© WAVECREST Corporation 2005 Glossary
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