Error detector setups Use the Serial Error Detector
Use the Serial Error Detector
From the Analyze menu, select Serial Error Detector.
Overview
The Serial Error Detector requires option ERRDT. The oscilloscope Error Detector conducts Bit, Frame,
Symbol, and
Character tests much like a BERT. It has the advantage that it not only counts the errors and
computes the error rates, but it also shows you where the error occurs in the signal and it allows you to
connect probes to other channels to debug the source of the errors, such as crosstalk.
The Error Detector is often used in conjunction with TekExpress software applications to conduct receiver
and margin testing.
The Error Detector has built-in preset setups that cover the most common use cases. These can be modified
and saved as custom setup files for later recall. Sample arbitrary waveform generator (AWG) setup files
are included for various SATA Gen3 and USB3 signals. These files make it easy to verify correct operation
of the Error Detector, and may be used to test a device-under-test (DUT).
To use
Select Analyze > Serial Error Detector to display the Error Detector control window.
Select a setup from the Preset Setting drop-down list and press Apply.
Press the Sync button and wait for a status of Not Counting (about 6 seconds). Depending on the
signal quality, you may need to press the Sync button more than once.
Sync gets the oscilloscope synchronized to the signal.
AstatusofNo Signal indicates that the oscilloscope cannot detect the signal. You may need to turn on
the output of the signal generator or AWG. A status of No Sync may arise for Bit tests that require a
known pattern length, sync pattern, or alignment character.
Press the Learn button, if visible. Learn only applies to some Bit Error Tests. Frame, Symbol, and
Character tests do not require the learn operation. Learn discovers the repeating pattern in the signal
and stores it into system memory for comparison to the signal to determine errors in the signal. Once
a signal is in memory, it remains there until the next Learn operation, so you do not have to use the
Learn button every time you start t esting for errors.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 199
To Next Page
Loading...
Need help?
General
