R&S ZNB Series User Manual page 698

®
R&S ZNB/ZNBT
●
Post 1 Cursor = 20 log
●
Post 2 Cursor = 20 log
Simple applications of the emphasis only define the Post 1 Cursor. Use a negative
value (in dB) for increasing the amplitude of the first bit after a transition. Below an
example for Post 1 Cursor = -3dB:
The FIR filter coefficients are found by solving the equations:
c + c
-1
c + c
-1
c + c
-1
-c + c
-1
subject to the normalization condition | c
Active
Enables/disables pre-emphasis.
Remote command:
CALCulate<Chn>:EYE:EMPHasis:STATe
Cursor Settings
Sets the weights of the filter taps in the pre-emphasis FIR filter.
Remote command:
CALCulate<Chn>:EYE:EMPHasis:CURSor:PRE
CALCulate<Chn>:EYE:EMPHasis:CURSor:POST<1|2>
Jitter
The "Define Eye Jitter" dialog allows you to add jitter to the digital signal simulated for
the eye diagram measurement.
Access: "Jitter" button in the
User Manual 1173.9163.02 ─ 62
( Vb / Va )
10
( Vc / Vb )
10
– c – c = Va
0 1 2
+ c – c = Vb
0 1 2
+ c + c = Vc
0 1 2
+ c + c = Vd
0 1 2
| + | c | + | c
-1 0
Advanced Settings dialog
GUI reference
Applic softtool
| + | c | = 1.
1 2
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