Manual-9
Bundle Transmission conflicts. Do not transmit onto the
same Bundle from two different CobraNet devices. Doing so
causes the loss of the data sent from the second device.
Firmware primer. The NM 84 contains two pieces of
internal firmware. One is the CobraNet firmware for the
CobraNet interface, the second is the NM 84s own internal
Rane firmware for the front panel interface, et cetera.
The Rane firmware revision number is displayed in the
NM 84 LCD display on the top line during power up. Both the
Rane firmware version (e.g., Version 1.01) and the date the
Rane firmware was compiled (e.g., Mar 21, 2000) is dis-
played. Displaying the additional date is a good way to ensure
Y2K compliance. To update the Rane firmware, you must
replace an internal chip.
The CobraNet firmware version is displayed on the bottom
line of the LCD display during power up (e.g., CobraNet rev
2.6.4). Interoperability between various CobraNet devices
requires matching CobraNet firmware versions. CobraNets
Disco utility provides the means to download new CobraNet
firmware into the NM 84. You must obtain Disco and the
required binary CobraNet firmware files separately. There is a
unique firmware file for each model of CobraNet device;
contact Rane for the latest CobraNet firmware if needed.
A on Network Hardware. Before running out to your
nearest computer retailer for networking equipment, check out
the latest list of equipment blessed by Peak Audio at
www.peakaudio.com/cobranet/tested_products.htm. (As a of
interest, a look through price lists will show you that the price
of a non-managed switch has come down close to the price of
a repeater hub. You would be wise to spend the extra bucks
and go for the switch, as it will make your network more
flexible and expandable.)
Four basic network hardware devices exist for use in
CobraNet network designs. The simplest, least expensive and
previously most common are called repeater hubs, which send
all incoming data out all of their network ports. Thus repeater
hubs are always multicast (broadcast) devices all data goes
everywhere. Use repeater hubs only when you have a dedi-
cated CobraNet network (no computers) and when all audio
channels are needed at all CobraNet node locations. If, for
audio security or other reasons, your application requires
certain channels to be accessible only in a certain area of the
network, you cannot use repeater hubs (use switched hubs).
Also, you cannot use repeater hubs in your network if you
need to share computer data and CobraNet data on the same
network. Repeater hubs are devices for freshmen, Network
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Table 1. CobraNet Bundles
