FM TRANSMITTER
TR
EM
1000
HE
DIG
PLUS
COMPACT
Technical Manual 1v2 November 2019
82
3.11.4
AES/EBU INPUT (OPTIONAL)
As defined by the Audio Engineering Society and the European Broadcast Union, this is the
standard universally used on professional and broadcast equipment. The signal is carried on a
balanced twisted shielded cable with 110 ohm impedance. The interface connector is usually
a balanced 3-pin XLR type.
The main advantage of this digital process and transmission is its virtual insensitivity to
external noise when properly managed.
Being the audio signal essentially analog, at least one Analog to Digital conversion must be
performed as one Digital to Analog conversion. These conversions will introduce small delays
and subtle artefacts so it is good practice to avoid multiple conversions between the initial
A/D and final D/A ones.
In the case of broadcast analog FM transmission, the final D/A conversion may conveniently
take place just before signal input to the transmitter or directly in the front-end modulation
input of the transmitter itself.
Figure: AES/EBU input