Reference
Terra User Manual
96
020-102838-10 Rev. 1 (05-2020)
Copyright
©
2020 Christie Digital Systems USA Inc. All rights reserved.
Protocol Ports
The table below lists port numbers used by Terra. These ports must not be used by other services on
the same host as the Terra Controller and must not be blocked by firewall rules. In the case of the
UDP ports, also ensure that these port numbers are not in use by other applications on your network
as some data is sent to broadcast IP addresses on those ports.
TCP
6970
Telnet/TCP connections between clients and the Terra Controller.
UDP
6969
Used by Terra Controller and Transmitters and Receivers to exchange
control information
UDP
10001 to 10004
Used by Terra Controller and Transmitters and Receivers to exchange RS-
232 data.
RS-232
RS-232 and IR data is routed between TX and RX devices using Unicast or Broadcast protocols when
sending RS-232 data to one or all devices. Unlike for audio and video, where data is always routed
from a TX unit to one or more RX units, TX and RX devices can both send and receive RS232 and IR
data. This means both TX and RX devices are shown as both senders and receivers.
When a receiver is joined to a sender, a one directional data tunnel is created. To establish two-way
RS232 or IR communication, devices must be joined twice; once as a sender and then again as a
receiver.
RS-232 and IR data transport is not limited to in-between devices. It is also possible to inject RS232
and IR data through the control layer (API Server) to a device and/or create one-way routing from a
device to the control layer (API Server) using the Terra JSON API.
RGMII 1000Base-T Interface
Transmitters and Receivers include an RJ45 connector labeled as LAN. This interface is identified as
RGMII in the Terra software. This interface can be connected to any device that supports
communication speed between 10 Mbps and 1 Gbps. It effectively adds 1 Gigabit network ports to the
system at every Transmitter and Receiver. Use devices on these ports that can be addressed and
configured directly and independently of any DHCP and discovery protocols. A laptop and even the
Terra Controller can be connected to these ports.
Multichannel I2S Audio Interface
Terra includes 4 synchronized I2S inputs (slave) and 4 synchronized I2S output (master) lines to both
extract and insert audio.
This interface supports:
•
Multichannel (up to 8 channels) audio extraction
•
Multichannel (up to 8 channels) audio insertion
•
Up to 192 KHz sampling rate
•
PCM and proprietary audio formats
Ancillary I2S Audio Interface
This interface transports ancillary 2-channel audio across networked Terra devices. The IIS interface is
configured as follows:
•
On Transceivers, this interface can be configured to be either an input or output.
•
On Receivers, this interface is always an output.
•
Transmitters and Receivers chipset is always the I2S master.
•
Sampling rate is fixed to 48 KHz.
•
Convert the audio back into analog audio and output it as analog audio (Analog Audio Output
connector).
•
Embed the 2-channel audio into the HDMI output signal for the connected display or AV
receiver.
