LeCroy DDA 7 Zi series, Operator'S Manual

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WavePro 7Zi
455
WP700Zi-OM-E-RevA
2. Touch inside the Signal Type field and make a selection from the pop-up
menu .
3. Touch inside the Code Rate field and make a selection from the pop-up menu . If you
select Custom , also touch inside the Custom m/n data entry field and enter new m and n
values, using the pop-up keyboard. See PRML Encoding in "PRML Channel Emulation" then touch
Back to complete this setup.
4. Touch inside the Adjacent Transitions (d) field and make a selection from the pop-up menu .
In general, PR4 and EPR4 use d=0; 2/3(1,7) encoded E2PR4 uses d=1.
5. Touch inside the Run Length Limit (k) field and enter a value from 0 to 99 using the pop-up numeric
keypad.
6. Touch inside the Bit Cell Time field and enter a value from 1.00 ns to 1.00 μs using the pop-up numeric
keypad. Then press the Measure Bit Cell Time button. See Principle of Equalization in "PRML Channel
Emulation" then touch Back to complete this setup.
7. Touch inside the VCO synch | data field and enter a value from 1 to 32 using the pop-up numeric keypad.
8. Touch inside the Ignore Last Samples field and enter a value from 0 to 999.
9. Touch the Filter head signal checkbox to enable filtering of the head signal; then touch the Train Filter
button to automatically set up equalization on the currently acquired head signal. See Train Filter in "PRML
Channel Emulation" then touch Back to complete this setup. If you do not automatically train the filter,
you need to perform steps 10 and 11 to manually set up the equalization filter.
10. Touch inside the –3 dB Frequency field and enter a value from 1.0 MHz to 800 MHz using the pop-up
numeric keypad. See –3 dB Frequency in "PRML Channel Emulation" then touch Back to complete
this setup.