GUI reference
R&S
®
ZNA
820User Manual 1178.6462.02 ─ 29
Remote command:
CALCulate<Chn>:EYE:DUT:MODE
Equalization
The "Define Equalization" dialog allows you to activate and define a continuous time
linear equalization at the receive side for the simulated eye diagram measurement.
Access: "Equalize" button in the Advanced Settings dialog
This dialog is available with Extended time domain analysis option R&S ZNA-K20 only.
Similar to the usage of emphasis the equalization targets to improve the signal quality
at the receiver end of the transmission system. The building block "Equalize" simulates
a continuous-time linear equalizer (CTLE) which is typically realized as an analog cir-
cuit in receivers.
Standards like USB 3.0 or PCIe specify the equalizer’s frequency response using a
gain factor plus poles and zeros in the frequency domain.
Active
Enables/disables equalization.
Remote command:
CALCulate<Chn>:EYE:EQUalization:STATe
CTLE Equalizer
Specifies the parameters of the equalizer – a two-pole filter with single zero. With
angular frequencies ω = 2πf, the transfer function is given by:
H
(
s
)
=
"DC Gain" ω
Pole 1
ω
Pole 2
ω
Zero
s + ω
Zero
(
s + ω
Pole 1
)
(s + ω
Pole 2
)
The default values are taken from the USB 3.0 standard for the ‘Long Channel’ model.
Applic softtool
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