
72 Dolby® DP570 Multichannel Audio Tool User’s Manual
Connector Specifications Video Ref
B.4 Video RefTheVideoRefconnectionsareBNCunbalancedfemaleconnectorsthatreceiveNTSC
compositeprogramsorcolorblackvideo.SignallevelsarecompliantwithSMPTE154
specifications.Twoconnectorsareprovidedinparalleltoprovideloop‐throughcapability.
Thisinputdoesnotsupplyaclocksignaltotheunitbutratherallowsthemetadataoutput
tomaintainsyncwithavideoreference.
B.5 Lt/Rt InputsTheseareBNCunbalancedfemaleconnectorscompliantwithAES‐3id‐1995/SMPTE276M
specifications.TwoconnectorsareprovidedinparallelfortheLt/Rtinputtoprovide
loop‐throughcapability.
B.6 Metadata Input PortsTheseportsare9‐pinfemaleD‐connectorswithfull‐duplexRS‐485protocolrunningat115
kbps.ThepinoutisSMPTE207Mcompatible.
B.7 Metadata Output PortTheseportsare9‐pinfemaleD‐connectorswithfull‐duplexRS‐485protocolrunningat115
kbps.ThepinoutisSMPTE207Mcompatible.
Table B-2 Metadata Input Port Pinout
Pin Connection
1Shield
2TXAasynchronousdatain–a
a.SeethenoteonDCEequipmentonpage71.
3RXBasynchronousdataout+a
4Ground
5NC
6Ground
7TXBasynchronousdatain+a
8RXAasynchronousdataout–a
9Shield
Table B-3 Metadata Output Port Pinout
Pin Connection
1Shield
2RXAasynchronousdataouta–
3TXBasynchronousdataina+
4Ground
5NC