Service manual

The S

TELLAR

MPEG-2 Decoder

Introduction

Ancillary data in SDI S

TELLAR

optionally supports audio, VBI and EDH embedded in the SDI signal.

Synchronization The S

TELLAR

needs no external synchronization to the network or transport stream.

The S

TELLAR

synchronizes to the encoder through the network or transport stream

signal. The video and audio signals are timed to the MPEG-2 specified program

clock reference (PCR) to synchronize the program components including VBI sig-

nals.

Alternatively the S

TELLAR

can be set in a free running mode where it does not lock to

the PCR. This enables the S

TELLAR

to decode Transport Streams with non-compliant

PCRs which typically occurs when other equipment in the transmission link adjusts

the TS bit rate without restamping the PCR values.

VITC Time coded data is recovered

from the transport stream signal

and inserted in the composite or

embedded in the SDI output.

no yes yes

IDS/VPS The IDS/VPS signal is recov-

ered from the transport stream

and inserted in the composite or

embedded in the SDI output.

no yes no

GCR no A ghost cancella-

tion reference sig-

nal (GCR) may be

inserted in the com-

posite output of the

decoder.

yes yes

VBI signal Recovered from the TS Inserted locally in

the decoder

PAL NTS