Installing and Powering Up
2.15
HSYNC Clock Reference
2.15.1
Overview
2.15.1.1
HSYNC IN (2 off)
The HSYNC IN analogue input enables external video clock
reference support.
An internal 27 MHz clock, when configured by nCompass Control, is
frequency-locked to the studio clock using one or other of the HSYNC
IN inputs. If the external studio reference fails, the MX8400 continues
to operate holding a close frequency approximation to the lost
external reference.
The two HSYNC signal inputs are used to support redundancy. If configured, the
MX8400 switches to the secondary HSYNC input when the primary HSYNC input is
missing or off frequency. The action of switching to the secondary input does not
impact on the output services. The MX8400 switches back to the primary input when
reconfigured by the user or if the secondary input fails.
Table 2.24 HSYNC IN
Item Specification
Connector type
BNC 75
Ω
Connector designation
HSYNC IN 1
HSYNC IN 2
Pin
Centre:
Shield:
Signal
Ground/Chassis
Each connector has an associated indicator which displays the status of
the connector.
describes the meaning of the indication states.
Table 2.25 HSYNC IN Interface Indicators
State Indication
Comment
Off Not
configured
Green Receiving
Red Fail
2.15.1.2
HSYNC OUT (2 off)
Support is provided for the distribution of a reference clock output in
the form of a pulse with its negative-going edge at HSYNC
frequency. This is frequency-locked to either the internal 27 MHz
clock or the active HSYNC IN reference. Clock selection is via
nCompass Control.
2/1553-FGC 101 1014 Uen B
2-30
Summary of Contents for MX8400
Page 1: ...MX8400 Multiplexer Software Version 5 2 0 and later REFERENCE GUIDE 2 1553 FGC 101 1014 Uen B...
Page 26: ...Installing and Powering Up 2 1553 FGC 101 1014 Uen B 2 4 BLANK...
Page 94: ...Operating the Multiplexer using nCompass Control 2 1553 FGC 101 1014 Uen B 4 18 BLANK...
Page 96: ...Preventive Maintenance and Fault finding 2 1553 FGC 101 1014 Uen B 5 2 BLANK...
Page 146: ...Technical Specification 2 1553 FGC 101 1014 Uen B B 20 BLANK...
Page 148: ...Static Parameters 2 1553 FGC 101 1014 Uen B C 2 BLANK...
Page 186: ...Redundancy Modes 2 1553 FGC 101 1014 Uen B E 2 BLANK...
Page 192: ...IP Protocols 2 1553 FGC 101 1014 Uen B F 2 BLANK...
Page 196: ...IP Protocols 2 1553 FGC 101 1014 Uen B F 6 Figure F 3 Editing Stack Download Ports...
Page 198: ...ProMPEG FEC Support for IP Streaming 2 1553 FGC 101 1014 Uen B G 2 BLANK...
Page 204: ...Setting up the SFN Functionality 2 1553 FGC 101 1014 Uen B H 2 BLANK...
Page 212: ...Setting up the SFN Functionality 2 1553 FGC 101 1014 Uen B H 10 BLANK...
Page 214: ...PSIG Support 2 1553 FGC 101 1014 Uen B I 2 BLANK...
Page 220: ...BISS Support 2 1553 FGC 101 1014 Uen B J 2 BLANK...