TECHNICAL OPERATIONS
August 2014
12
Audio output ports
Audio Channels. This is a DE-9P (male) connector used as a unidirectional (output) analogue
audio data port. Pin outs are as follows:
PIN
Acronym
Reference
1
LEFT +
Audio X Left +
2
GND
Ground
3
AES +
Digital Audio Output X +
4
GND
Ground
5
RIGHT +
Audio X Right +
6
LEFT -
Audio X Left -
7
GND
Ground
8
AES -
Digital Audio Output X -
9
RIGHT -
Audio X Right -
Nominal Program Level for the IDC system is +4dBu, (+4dBm/600ohms).
Sufficient headroom is maintained by operating at this level, in order that performance not be
compromised by the need to limit or otherwise process the signal before delivery.
The aim is to supply high quality program material which is as close to the original as possible.
Tailoring of the audio signal to achieve a preferred 'sound' is left to the receiving station. Users
will need to provide external means for level adjustment, if required. Clipping level at the
receiver output is +16dBu.
For maximum flexibility, Macquarie Media Syndication recommends you use stereo audio
distribution amplifiers to run the outputs of your receiver(s) to your on-air studios, production
studio, news room (for News Maker and monitoring) and your automation system (if
applicable). This also allows you to set the output level that is required by your consoles and
automation system – call Macquarie Radio Syndication to arrange a tone test for alignment.
AES digital output Axia Live Wire outputs are also available for integration into digital
environments.
