User guide

Introduction

• Each multiplexer supports the use of re-multiplexed PCRs (that is all multiplexed

services maintain their original program clock reference) or a single common

PCR (all incoming services are time adjusted to reference an internally

generated PCR).

Note: When operating in single PCR mode all contributing services must be

locked to a single common clock reference e.g. studio clock (HSYNC IN).

• Release 5 of the MX8400 provides the capability, under nCC control, to allow

the remultiplexing of transport streams without reading, analyzing or processing

the PCR. This means the user can specify that an incoming transport stream

uses a raw bit rate measurement (i.e. ignore the PCR values in the transport

stream).

1.3.2.3 Frequency Synchronization

• The main MX8400 system reference clock is an internal 27 MHz voltage

controlled oscillator. It can be locked to an externally sourced clock reference,

via the HYSNC input or GPS input. It can, also, be locked to the high-precision

on-board clock if no external source is available.

• Dual HSYNC clock inputs support the option of locking an internal frequency

reference to an external studio clock. The external clock reference is

configurable to accept 625 or 525 line video standards.

• Dual HYSNC clock output.

1.3.2.4 Table Generation

• The MX8400 can generate and insert the DVB Time and Date Table.

• The MX8400 can insert the DVB Time Offset Table. (This requires the use of

third-party equipment.)

• The MX8400 can insert the PSIP System Time Table. (This will require the use

of third-party equipment.)

1.3.2.5 TS IP Summary of Features

• Four independent

GbE transport stream data ports are provided. Each port

supports both RTP and UDP formatted packets.

• GbE interfaces support IP packet jitter removal

1.3.2.6 ASI Input/Output Summary of Features

• Four ASI outputs are provided. These support 188 and 204 byte transport

stream packets and are able to operate in byte and single packet burst mode.

• Two ASI inputs are provided. These support 188 and 204 byte transport stream

packets and are able to operate in byte and single packet burst mode.

Each port has its own MAC address.

2/1553-FGC 101 1014 Uen B

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