CER Noise Margin (rms)

Flex Apps:
FlexDCA
Meas. mode:
Eye
Waveform type:
PAM4
Eye Mode
PAM Analysis Setup
PAM Toolbar

The CER Noise Margin (rms) measures the maximum of noise can exist without violating the defined Codeword Error Ratio used in a CER TDECQ measurement. The measurement requires a PAM4 waveform.

You can configure the CER Codeword definitions including the Target CER error rate for this measurement in the following three dialogs. Making a change in one of these dialogs also changes the setting in the other dialog. The settings are linked.

  • PAM-N Analysis Setup dialog. Click the PAM Setup button that is located on page 1 of 6 on the PAM toolbar, and select the dialog's TDECQ Configuration tab.
  • TDECQ Reference Equalizer Setup dialog. Click on the TDECQ Equalizer function to open the TDECQ Reference Equalizer Setup dialog. Select the TDECQ Measurement tab.
  • Reference Receiver Setup dialog. Click on the Reference Receiver function to open the Reference Receiver Setup dialog. Select the TDECQ Measurement tab.

For compliance measurements, use a Waveform Signal Processing TDECQ Equalizer operator.