72 Dolby® DP570 Multichannel Audio Tool User’s Manual
Connector Specifications Video Ref
B.4 Video Ref
TheVideoRefconnectionsareBNCunbalancedfemaleconnectorsthatreceiveNTSC
compositeprogramsorcolorblackvideo.SignallevelsarecompliantwithSMPTE154
specifications.Twoconnectorsareprovidedinparalleltoprovideloopthroughcapability.
Thisinputdoesnotsupplyaclocksignaltotheunitbutratherallowsthemetadataoutput
tomaintainsyncwithavideoreference.
B.5 Lt/Rt Inputs
TheseareBNCunbalancedfemaleconnectorscompliantwithAES3id1995/SMPTE276M
specifications.TwoconnectorsareprovidedinparallelfortheLt/Rtinputtoprovide
loopthroughcapability.
B.6 Metadata Input Ports
Theseportsare9pinfemaleDconnectorswithfullduplexRS485protocolrunningat115
kbps.ThepinoutisSMPTE207Mcompatible.
B.7 Metadata Output Port
Theseportsare9pinfemaleDconnectorswithfullduplexRS485protocolrunningat115
kbps.ThepinoutisSMPTE207Mcompatible.
Table B-2 Metadata Input Port Pinout
Pin Connection
1Shield
2TXAasynchronousdataina
a.SeethenoteonDCEequipmentonpage71.
3RXBasynchronousdataout+a
4Ground
5NC
6Ground
7TXBasynchronousdatain+a
8RXAasynchronousdataouta
9Shield
Table B-3 Metadata Output Port Pinout
Pin Connection
1Shield
2RXAasynchronousdataouta
3TXBasynchronousdataina+
4Ground
5NC