IRIS Net RCM-26, Owner'S Manual

Page: 12 / 76

12
RCM-26 Remote Control Module
Owner’s Manual
2, AES/EBU-OUT
The AES/EBU OUT connector allows looping-through the digital audio signal to
other RCM-26 modules. The digital input signal gets internally buffered and
preprocessed (level matching / slew rate) before it is output via the OUT-
connector. This allows fairly simple wiring between modules, without the need
for AES/EBU distribution amps as they are usually used.
The RCM-26 has a bypass-relay, which, in case of damage (e.g. power outage),
connects the AES/EBU IN signal through to AES/EBU OUT. This ensures
trouble-free operation of downstream remote amps.
3, LOCK-LED
The LOCK-LED lights green as soon as the AES/EBU input has
been synchronized to the incoming signal and thus proper audio
transmission has been established. The LOCK-LED is dimmed with
no digital audio signal being present at the input or the internal PLL
not having locked on to the incoming signal. The audio signal gets
muted when the digital input has been selected.
4, REMOTE CAN BUS Connection
The RCM-26 module provides two Neutrik EtherCon® RJ-45 sockets for
connecting to the REMOTE CAN BUS. These sockets are connected in parallel
and serve as inputs as well as for daisy-chaining the devices on the remote
network. Cabling in a rack system can be established using commercially
available RJ-45 network cables. However, CAN guidelines have to be observed
for longer cable lengths. Both ends of the CAN-bus must be terminated using
120
Ω
terminating plugs. For comprehensive information and instructions on
cabling and bus length, please refer to the “CAN Bus principles“ paragraph,
starting on page 18. Along with the CAN bus, network cabling also carries a
balanced audio monitoring signal. This monitor bus allows software-controlled
Illustration 2.2: Pin-assignment of AES/EBU-OUT