Axel Oxygen 5 User Manual Page 23

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Oxygen 4 Digital - from Axel Technology Phone +39 051736555, support@axeltechnology.com Page 23
Figure 11: Phones output at 19" rack
9.2 Digital Inputs/Outputs
The Oxygen 4 Digital holds 7 digital inputs and outputs. At the rear side of the 19” rack you will find
digital I/O 1-6 and at the front side is Digital I/O 7 located. The digital inputs at the rear side can receive
either Coax (SPDIF) or XLR (AES3) digital audio.
Figure 12: Digital Input/Output at rear side
Pin 1 RX IN +
Pin 6 RX IN -
Pin 2 GND
Pin 7 TX OUT +
Pin 3 TX OUT -
Pin 8 GND
Pin 4 GPO A
Pin 9 GPO B
Pin 5 Not Connected
Table 6: Pinning Dig I/0 1..6
GPO-A and GPO-B make connection if the GPO is activated!
Maximum current: 200 mA
Maximum resistance when connection made: 12 Ohm
Maximum Voltage: 24 V
Below you see the layout of the front side digital input. You can choose which type of digital audio connection
you want to use as input: Coax or Optical. The switch in between controls this selection. The LED's will show
which type is used and if a valid digital audio signal is received (NO LOCK led is off when signal is valid).
Figure 13: Digital Input/Output at Front side
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