AEQ DIGITAL COMMENTARY UNIT Customer's Manual page 108

4.5.3 Remote control of the Commentary Unit using serial data
transmission
A CU can be controlled by the control software without using a CCU.
If you wish to control remotely the CU through a ISDN connection using the
data channel of an AEQ Codec, contact with AEQ technical staff, who will
supply you of a software version with a data channel of 1200 bps.
Interconnection through ISDN must be highlighted due to the need for few
technical resources and markedly improved operation:
Fig 4.5.4. Wiring CU- Control Computer by ISDN
The local wiring is as follows:
The CU output MIX OUT is connected to the audio input of a codec. The audio
output of the codec is connected to the LEFT INPUT of the CU: this signal will
be heard through the left earphone.
The codec' s DATA PORT is connected to the CONTROL CONNECTION of the
CU.
The LOCAL PRG signal is sent to the right earphone.
The codec is connected to a terminal adapter, and from the terminal adapter to
a basic ISDN access.
The remote wiring in the broadcast studio is as follows:
The basic ISDN access to the terminal adapter and from here to the codec.
The codec audio output to a mixer input channel.
The codec audio input to the mixer mix-minus bus output.
The codec data port to a serial port on the control PC.
Thus the CU can be remotely controlled by the PC software from the control
studio. The program can be sent to, and F' Back received from, the studio
simultaneously through the codec.
The use of a digital, or alternatively analogue, route to send serial data, allows
the CU to receive commands from the operating computer, and therefore permit
it to function, although with some limitations, like a CCU.
Digital Commentary System
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