Rear Panel:
Power Inlet and Fuse Holder:
The NBB-1616 breakbox can be powered by wide range of AC source
from 100~240V. The fuse in the fuse holder must be slow blow type of
fuse rated at 1A.
Do not use fast acting fuse for replacement.
There is
also a spare fuse in the fuse holder when the machine shipped.
Fan Control:
The fan on the rear of NBB-1616 breakbox, by default, is always ON
when the device is in operation. However, you have the option (AUTO
MODE) to turn off the fan by pressing down the FAN switch through the
little hole next to the fan. The fan then won't startup until the temperature
in the device reaching 70
℃
. Once the fan turn on, it won't turn off until the
device cools down below 40
℃
internally. The feature of AUTO ON/OFF
allows people who operate the device in quiet studio to avoid the wind
noise from fan.
We strongly recommend you leave the fan always ON, because keep the device cool can evidently prolong the
device lifetime in long term.
Dante Network Interfaces:
Under normal room environment, the NBB-1616 can transceives audio stream up
to 100 meters with Cat.5e Ethernet cable or above. There are two RJ45 jacks on
the rear of panel for Dante audio networking. These two Ethernet interfaces can
be configured to work as either switch mode or redundant mode.
Switch Mode: This is the default mode. Under switch mode configuration,
you can cascade several NBB-1616s in daisy-chain topology. The major
benefit for this mode is that you can easily extend the audio coverage with
only one single Ethernet link by simply plug-in cable from previous NBB-1616 and plug-out cable to the
jack in the next NBB-1616 in the same route. Since both primary and secondary of the RJ45 interfaces
are virtually equal in switch mode, it does not matter whether you plug-in into primary or secondary
RJ45 jack first. However,
in switch mode, you can't connect two NBB-1616s with two cables from
both primary and secondary interfaces of one device to the other device.
Doing so can cause an IP
conflict error and crash the whole Dante network. Please refer to "Daisy-chain" diagram of section of
"Typical Deployment and Application" for illustration.
Redundant Mode: This enforces fault tolerant by transceiving audio stream through two separated
Ethernet networks. The data flowed in both RJ45 interfaces are redundant each other but are transceived
in absolutely separated route. Therefore, any network failure on primary side can be seamlessly
recovered by the network on the secondary side, and vice versa. Please be notified,
never mix data path
between primary side and secondary side on any network node if the network interfaces are
configured to work in redundant mode.
Doing so can crash both sides of networks and hang all NBB-
1616s in both networks.
While configuring the NBB-1616 to work in switch mode can extend coverage easily by cascading several
NBB-1616s in daisy-chain, you are also encouraged to extend your audio network with the on-the-shelf
Ethernet switches. Since NBB-1616 breakbox can transceive date over Ethernet switches, you can easily and
freely expand your audio streaming network with one or more Ethernet switches no matter the two Ethernet
interfaces in the NBB-1616 are configured to work as switch mode or redundant mode. Please refer to the
section of "Typical Deployment and Application" for illustration.
You can toggle the above mode setting in between by simply long pressing a Redundant/Daisy-chain button on
the rear panel. This is also mentioned on next section of the guide.
