Technical data

1.0E+0

Evaluate the Results

To evaluate the results:

Get the number of points measured:

meas:jtol:char7:fetc:data:ava?

Ask for the DUT capability:

meas:jtol:char7:fetc:data:cap? DUT

This returns for each of the measured frequencies the maximum jitter amplitude

the DUT could stand without exceeding the target BER. These are the values

that form the jitter tolerance curve.

Query the measured points to inspect the results in detail:

meas:jtol:char7:fetc:data:poin? 54, 0

This returns the settings and results for the leftmost 54 points.

Finally close the object:

meas:gen7:clos

Using Error Location Capture

Using Error Location Capture - Concepts

Error Location Capture allows to capture the position of an errored bit in a memory-

based pattern. The instrument saves the position of the errored bit and writes a

bit sequence neighbouring the errored bit to a file.

This feature can be used to find rare or random errors. A DUT could have problems

handling long series of zeroes. Error Location Capture can be used to locate the

bit errors in such cases.

N O T E

Error Location Capture may not be available to all instruments or options. See the

online Help or the User's Guide for details on the available features of your

instrument.

3 Recommended Programming Techniques

42 Agilent J-BERT N4903B High-Performance Serial BERT

What is Error Location Capture?