IRIS Net UCC 1, Owner'S Manual

The ISOLATED / GROUNDED switch located on the UCC1’s front panel allows bridging this galvanic 

isolation putting the CAN-bus of the UCC1 on circuitry ground potential. 
The CAN-bus should normally be referenced to the ground potential at one single point in the network. 

Set the switch to its GROUNDED-position when only one UCC1 is used in a single CAN-bus network. 

When employing several UCC1s in a CAN-bus network, setting the ISOLATED / GROUNDED switch of 

one UCC1 to GROUNDED while leaving the switches of all other UCC1s in the ISOLATED-position is 

recommended.

5.  Monitor Bus

Next to the CAN-bus signal, network cabling also holds the balanced audio-monitor signal for monitoring 

the power amp inputs and outputs. This monitor-bus allows software-controlled monitoring of the input and 

output signals of all power amps that are included in the remote network, without the need for additional 

wiring. The monitor signal is present at the UCC1’s XLR-type MONITOR Output connector for further 

distribution to (e.g.) a mixing console to be monitored via headphones or an active monitor speaker 

connected.

6.  Technical Information

6.1  The UCC1 USB-CAN Converter

The UCC1 is an USB-to-CAN adapter, which offers the possibility to easily include any PC or Notebook 

computer that is equipped with an USB-port in an existing CAN-network. The USB driver, which is part of 

the IRIS-Net-software is the only thing needed for triggering. The UCC1 gets its power supply from the PC’s 

USB-port, so that no external power supply unit is necessary.
The following block diagram shows the UCC1’s internal structure with USB-port and controller on the one 

side and the CAN-bus interface with CAN-transceiver component and galvanic separation on the other 

side. The controller is responsible for the data format conversion between USB-port and CAN-bus, allowing 

data rates of up to 500 kbit/s.
Next to the CAN-bus, the network cabling also holds the monitor bus, which serves for monitoring the input 

or output audio signals of all amplifiers that are included in the network. This audio signal is present at the 

UCC1’s XLR-type MONITOR Output connector to provide trouble-free connection to a mixer input or an 

additional amplifier.

Fig. 7: UCC1 Block Diagram

The CAN-bus port of the UCC1 (CAN BUS IN / OUT) is carried out via two Neutrik EtherCon connectors 

to ensure most secure and reliably safe RJ-45 connections even under most wearing conditions. The 

EtherCon connector series has been specially designed for use in ProAudio and On-Stage applications. 

Matching Neutrik plug-type – NE8MC – connectors are also available.

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