CM-SR644024_09-11-2023_Rev-25
Page. 48
Connector Details
Analogue Inputs
: 3-pin female XLR connectors. The inputs are electronically balanced and are
suitable for connection of either microphones or line level sources. Input impedance is 1.2 kohms in Mic
Mode, or 10 kohms in Line Mode, Mic or Line mode being selected from the assigned channel’s Input
Gain panel. The maximum input level is +40 dBu (with pad enabled). When an input connector is
assigned as the input of a channel in Mic mode, 48 V phantom power is available, also switched from
the channel’s Input Gain panel. The connector should be wired as follows:
Pin
Connection
1
Screen
2
Signal ‘hot’ (phase)
3
Signal ‘cold’ (antiphase)
Analogue Outputs
: 3-pin male XLR connectors. The outputs are electronically balanced with a source
impedance of 50 ohms. The maximum output level is + 21 dBu. The connector should be wired as
follows:
Pin
Connection
1
Screen
2
Signal ‘hot’ (phase)
3
Signal
‘cold’ (antiphase)
AES3 digital inputs
: Four AES3 digital audio inputs are available at the rear of the control surface on
3-pin XLR female connectors. The AES3 format carries two independent audio channels. In accordance
with the AES3 spec, the inputs are balanced, with a characteristic impedance of 110 ohms.
Connections to these inputs should always be made using cable specifically designed for digital audio.
The digital inputs are equipped with Sample Rate Converters (SRCs) and can accept sample rates
between 44.1 kHz to 192 kHz.
Connector pinout is the same as XLRs for analogue audio:
Pin
Connection
1
Screen
2
Ch
’s A & B ‘hot’ (phase)
3
Ch
’s A & B ‘cold’ (antiphase)