PAM4 Level Results Table

Instrument
DCA-X
N109x
Meas. mode:
Jitter
N1000A Option:
PLK
86100D Option:
ETR
Package License:
L-RND
PAM Level Table

The PAM4 Level results table is displayed whenever a PAM4 signal is being analyzed. The table shows the default scalar measuement results. Additional measurements can be added to the table by clicking the measurements buttons that are available on the the Meas toolbar. To reset the table to its default measurements,click the Reset Level button.

If the Level table is not displayed, click the Measure > Jitter > Amplitude > Amplitude Meas ON.

Normally, data acquisition and measurement happens very quickly. As soon as the graphs scroll over the screen, the results are displayed. If, however, you are measuring very long patterns (for example, 216–1 PRBS), you may notice a delay between the time when the graphs scroll down and the final results are displayed in the panels. How can you tell when your measurements are finished? Look for the measurement annotations in the Jitter and Amplitude panels. The text "No Data" next to an entry indicates the edges are being characterized. A question mark (?) next to a measurement result indicates that indicates a measurement in process.

DRAG & DROP DATA

You can drag-and-drop a panel's tabular data directly into Microsoft Excel and Word. On the Windows desktop size FlexDCA and the target application so that both are open and visible. Click on the panel's tab and drag the panel to the other application. On the DCA-X, you can accomplish this by adding a second display.

Click the Meas toolbar's Reset Eye button to reset the Level table to the default measurements. These are the same measurements displayed after a default setup.

Measurements Listed in PAM Level Results Table
Measurement Name Access Remote Command Additional Information
DI (δ-δ) default measurement :MEAS:AMPL:DI
Eye Height default measurement :MEAS:AMPL:EHEight
Highest remote only :MEAS:AMPL:HSYMbol This measuurement is only shown in the table by sending the remote command.
ISI (p-p) default measurement :MEAS:AMPL:ISI
Level default measurement :MEAS:AMPL:LEVel
RLM / Eye Linearity Click Linearity button :MEAS:PLEVel:LINearity
Lowest remote only :MEAS:AMPL:LSYMbol This measuurement is only shown in the table by sending the remote command.
PI (δ-δ)
BUI (δ-δ) 		default measurement :MEAS:AMPL:PI Depending on the Separation Method setting in the Advanced tab of the Jitter Mode Measurements Setup dialog box. BUI is shown if Auto or Tail Fit is selected. PI is shown if the default Spectral is selected.
PI (rms)
BUI (rms) 		default measurement :MEAS:AMPL:PIR Depending on the Separation Method setting in the Advanced tab of the Jitter Mode Measurements Setup dialog box. BUI is shown if Auto or Tail Fit is selected. PI is shown if the default Spectral is selected.
Q default measurement :MEAS:AMPL:Q
RIN Click RIN button :MEAS:AMPL:RINoise
RN (rms) default measurement :MEAS:AMPL:RN
Signal Amplitude (electrical)
Mod'n Amplitude (optical) 		default measurement :MEAS:AMPL:SAMPlitude Listed as Signal Amplitude for electrical signals. Listed as Modul'n Amp for optical signals (in Watts).
SER Floor default measurement :MEAS:AMPL:SERFloor
SER Limit default measurement :MEAS:AMPL:SERLimit
TI default measurement :MEAS:AMPL:TI
UN (rms) Click Uncorrelated Noise button :MEAS:AMPL:UN