Abekas Mira User's Operation Manual - Rs422 Serial Control
User Operations Guide—Mira Instant Replay Server
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Copyright ©2014, Abekas Incorporated
Revised: 5 September 2014
RS422 Serial Control
Each video channel in Mira features an RS422 serial control port, located through a break-out cable on the rear panel of the Mira Server.
At the end of the breakout cable are “Ethernet” type RJ45 connectors. Mira includes adapters for each RS422 serial port to convert the
RJ45 cable to 9D, so you can just plug a standard male 9D serial cable into the adapter.
These RJ45 cables for the RS422 serial ports are each wired 1:1 from the eight pins of the RJ45 to the first eight of the nine pins in
standard “D9” serial RS422 cables. A given installation of the Mira server may require use of the RJ45-to-D9 adapter if RS422 serial
control is routed via D9 connection.
These RS422 serial ports are used to control the video/audio channels of the Mira server from external controllers capable of RS422 serial
control, and which support either “Sony BVW-75,” “Odetics,” “AMP over Ethernet,” or “Louth VDCP” protocols.
Select RS422 Protocol
To select the desired protocol for the RS422 serial control ports, please refer to the procedure “Engineering Setup — Protocol” found on
Clip ID Support
From remote controllers with Louth VDCP, AMP or Odetics protocol, the eight-character “Clip ID” for clips stored in Mira is used for
referencing the clip listing and clip loading.
The “Clip ID” field is normally left blank when importing media files, and is sometimes left blank when recording new clips into Mira. If the
Clip ID remains blank, external controllers via RS422 serial control will automatically reference the first eight characters of the Clip Name.
If/when the user populates the Clip ID field from Mira Explorer, then external controllers will reference the Clip ID instead of Clip Name for
clip listing and loading.