PAM Pk-Pk Amplitude

Meas. mode:
Eye
Package License:
L-RND
L-MFG
Flex Apps:
FlexDCA
FlexRT
Waveform type:
PAM
NRZ
PAM Toolbar
Eye Mode
PAM Setup

The Eye mode IEEE 802.3cu compatible Pk-Pk Amplitude measurement returns a value in Volts for an electrical signal or Watts or dBm for an optical signal. The Pk-Pk amplitude measurement is defined as:

Where:

  • Pmax is based on a 1e-2 hit ratio, where Pmax is the smallest power level that results in the number of samples above that level not exceeding the product of hit ratio and total number of observed samples. All samples are acquired in a single unit interval eye diagram.
  • Pmin is based on a 1e-2 hit ratio, where Pmin is the largest power level that results in the number of samples below that level not exceeding the product of hit ratio and total number of observed samples. All samples are acquired in a single unit interval eye diagram.

This measurement can also be performed on an NRZ signal.

The hit ratio default setting is 1e-2 and is based on the IEEE 802.3cu standard. However, after selecting the measurement you can change this ratio if needed.

To measure

  1. Select Eye/Mask Mode.
  2. Click the toolbar's PAM tab.
  3. Click Auto Scale in the menu bar.
  4. Click the More buttons to locate the Pk-Pk Amplitude button.
  5. Click the button.

SCPI Command

:MEASure:EYE:PAM:PPAMplitude