R&S ZNB Series User Manual page 694

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R&S ZNB/ZNBT
Note that for a modulation type other than NRZ, eye masks and eye mask tests are not
available (the buttons on the
Remote command:
CALCulate<Chn>:EYE:INPut:MODulation
High Level / Low Level
Defines the highest/lowest (nominal) voltage level of the multilevel signal that is used
to generate the related eye diagram.
The
(see
Remote command:
CALCulate<Chn>:EYE:INPut:OLEVel
CALCulate<Chn>:EYE:INPut:ZLEVel
Low Pass
Defines the signal shape of the simulated digital signal: toggles between ideal rectan-
gular shape ("Low Pass" = disabled, default) and a more realistic shape ("Low Pass" =
enabled).
If enabled a single pole low pass filter is inserted into the simulated signal path, which
is defined using its rise time (see
Remote command:
CALCulate<Chn>:EYE:STIMulus:LOWPass
Rise Time / Rise Time Definition
The
the signal amplitude.
Note that the measured rise time after the DUT is also affected by the rise time of the
DUT. Hence the measured rise time can be higher than the specified rise time.
Remote command:
CALCulate<Chn>:EYE:INPut:RTIMe:DATA
CALCulate<Chn>:EYE:INPut:RTIMe:THReshold
Define Colors
Opens a dialog that allows to change the color gradient of the eye diagram (as a heat
map).
User Manual 1173.9163.02 ─ 62
Modulation type can only be changed in the advanced "Generator Settings" dialog
"Generator" on page 696).
Low Pass is defined by its "Rise Time" from 10% to 90% or from 20% to 80% of
Eye Mask Test tab are grayed out).
"Rise Time / Rise Time Definition"
GUI reference
Applic softtool
on page 694).
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