Exfo PSO-200 Optical Modulation Analyzer Bedienungsanleitung PDF herunterladen (Seite 91)

Bit Pattern Analysis and the Gearbox

Optical Modulation Analyzer 83

Exporting Symbol Patterns

If the signal data has been acquired with a compatible pattern mode

(“Repetitive (unknown)”, “PRBS” or “user-defined”), you can export the

actual symbol pattern to a file and reuse it for other acquisitions.

Note: Exporting the symbol pattern from an acquisition in Repetitive mode is

especially useful, since you can reimporting it to obtain better calculations

and a symbol error rate. See Importing User-Defined Symbol Patterns on

page 84.

The exported file (.osp) is in tab-delimited text format. Here is an example

of an exported dual-polarization QPSK symbol pattern, opened in Notepad:

To export a symbol pattern:

1. Select the desired burst (using Playback) from an acquisition made

with a compatible input pattern mode.

2. From the File menu, select Export, then Symbol Pattern.

3. Indicate the location where you want to save the file.

One line per symbol

I an Q values

for polarization X

I an Q values

for polarization Y (if applicable)

Line number

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 284 285

Keine Kommentare

Exfo PSO-200 Optical Modulation Analyzer Bedienungsanleitung Seite 91