Grass Valley DAP-1781 - Manual (Page 66)

GUIDE TO INSTALLATION AND OPERATION
66 | DAP-1781
Appendix C – Metadata Input/Output Serial Port
Depending on the rear panel used, the DAP-1781 can have a Metadata In, a Metadata Out or both ports.
These ports use RS-422/485 levels and operate at 115200 bps.
Metadata Source: DAP-1781
When the DAP-1781 is transmitting data, it is considered to be the RS-485/422 bus controller. The device
receiving the metadata is the tributary.
Examples of tributary equipment:
Dolby DP569 Dolby Digital Encoder (“Metadata” port)
Dolby DP570 Dolby Multichannel Audio Tool (“Metadata Input” port)
Dolby DP571 Dolby E Encoder (“Metadata” port)
Metadata Source: Other equipment
When the DAP-1781 is receiving data, it is considered to be the RS-485/422 tributary. The device
transmitting the metadata is the bus controller.
Examples of bus controller equipment:
Dolby DP570 Dolby Multichannel Audio Tool (“Metadata Output” port)
Dolby DP572 Dolby Digital / Dolby E Decoder (“Metadata” port)
DAP-1781 and Dolby LM100 Loudness Meter
The DAP-1781 is considered to be the RS-485/422 bus controller.