32Revision 1 2017 CDC sevenSurface and Local I/O – audio connectionsAnalogue inputs – the connector and characteristics of the local analogue inputsare identical to those on the remote stageboxes:Pin Connection1 Screen2 Signal ‘hot’ (phase)3 Signal ‘cold’ (antiphase)Analogue outputs – the connector and characteristics of the local analogueoutputs are identical to those on the remote stageboxes:Pin Connection1 Screen2 Signal ‘hot’ (phase)3 Signal ‘cold’ (antiphase)AES3 digital inputs – four AES3 digital audio inputs are available at the rear ofthe control surface on 3-pin XLR female connectors. The AES3 format carriestwo independent audio channels. In accordance with the AES3 spec, the inputsare balanced, with a characteristic impedance of 110 ohms. Connections to theseinputs should always be made using cable specifically designed for digital audio.The digital inputs are equipped with Sample Rate Converters (SRCs), and canaccept sample rates between 44.1 kHz to 192 kHz.Connector pinout is the same as XLRs for analogue audio:Pin Connection1 Screen2 Chs A & B ‘hot’ (phase)3 Chs A & B ‘cold’ (antiphase)AES3 digital outputs – four AES3 digital audio outputs are available at the rearof the control surface on 3-pin XLR male connectors. The outputs are balanced,with a characteristic impedance of 110 ohms. Connections to these outputsshould always be made using cable specifically designed for digital audio.The digital outputs are equipped with Sample Rate Converters (SRCs), whichmay synchronised to other digital audio equipment using the WORD CLOCK INconnector.Connector pinout is the same as XLRs for analogue audio:Pin Connection1 Screen2 Chs A & B ‘hot’ (phase)3 Chs A & B ‘cold’ (antiphase)