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Test points, Fef parameters, Dtc-378 t2xpress – DekTec DTC-378 T2Xpress User Manual

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DTC-378 T2Xpress Manual

Essential Tools for Digital-TV Professionals

February 2015

DTC-378 T2Xpress

7.5. Test Points
In case the output type I/Q samples is selected (I/Q Float32, I/Q Int16 or I/Q Text), this area allows

you to specify the test point data files to be generated.

Test Point parameters

The generation of test point data files is according to the document: “Generating DVB-T2 Reference

Streams”. Test points have to be separated by commas. The following test points are supported: 1,

3, 4, 6, 8, 9, 11, 12, 15, 16, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 33, 34, 50, 51

and 53.

7.6. FEF Parameters
This group of parameters allows you to specify the insertion of Future Extension Frames (FEFs).

FEF parameters

Parameter

Description

Enable FEF

If checked, Future Extension Frames (FEFs) are inserted;

If not checked, no FEFs are inserted and the parameters below have no

meaning

Type

Specifies the FEF-type

S1

The S1-field value in the P1 signalling data

S2

The S2-field value in the P1 signalling data

Signal

The generated signal during the FEF period can be Zero or a random test

signal made from 1k OFDM transformations of a PRBS signal

Length

FEF-length; the length of a FEF-part in number of samples

Interval

FEF-interval; the number of T2-frames between two FEF-parts