Manual-3
Rear Panel Description
a Chassis ground screw. A #6-32 screw is supplied for chassis grounding purposes. The NM 84 does connect the 3rd pin of
the AC line cord to the NM 84 chassis metal through the RS 3 power supply. This chassis screw is supplied should you need
a point in the rack to earth ground other devices or the metal rack rails. The earth connection is critical and in most installa-
tions, required by law. Please refer to the RaneNote, Sound System Interconnection (available at www.rane.com) and
included with this manual) for further information on system grounding.
b Power input connector. Use only an RS 3 power supply from Rane, included with this unit. Consult the factory for a
replacement or a substitute power supply. Using any other type of supply may damage the unit, void the warranty and cause
disco mirror balls everywhere to tragically spin in the opposite direction. After inserting the power connector into the NM 84,
be sure to tighten the outer locking ring to ensure that the power cable cannot be inadvertently pulled out.
c 100Base-T jack connects the NM 84 with a standard RJ-45 connector to either another CobraNet device using a crossover
cable or, more often, to a standard 100Base-T repeater hub, switch or media converter in the network.
dÿCOND indicator illuminates yellow when this unit is the Conductor of the CobraNet network. The Conductor is the one
CobraNet device on the network that generates the master clock used to synchronize all other CobraNet devices on the
network. Only one device on the network will have the COND indicator on. If the Conductor is unplugged, removed from the
network or fails, CobraNet automatically assigns a new Conductor on the network. It is rarely important to know which
device is the Conductor.
e LINK indicator lights green when any packet is present on the network. This means any packet, including packets not
intended for the NM 84. It tells you that the network is actually transporting data. If this indicator is off, no data is present.
f FAULT indicator lights red when, you guessed it, a fault occurs. Here in Seattle, there are faults everywhere. California
also has faults but then again, doesnt everybody?
g RS-232 port provides a way to transport RS-232 data over the network to subsequent NM device(s). For example, you can
send RS-232 serial data to devices such as the RaneWare RW 232 line of audio products. This port cannot be used for serial
control of the NM 84. Be sure the NM 84 is configured properly (i.e., baud rate, Rx and TX channel) for your serial applica-
tion using the Serial page.
h Memory Recall Port (MRP) allows any remote switch to recall the first eight NM 84 Memories. These recall using simple
switch closures between two pins. All 16 Memories can be recalled using Binary Mode (see page Manual-14). Switch
closures on one NM 84 can be transmitted over the network to other NM devices tuned in to the same MRP Channel.
i FP Lock button. When pressed in, all front panel controls are locked out. The user is able to view, but not edit, all Edit
pages. A sharp instrument such as a small screw driver or pen tip must be used to depress the FP Lock button.
j Mic Inputs accept balanced mic or line-level analog audio signals. Shields (pin 1) connect to the chassis through the lower-
right XLR mounting screw (when viewed from the rear of the unit). Keep these tight for best EMI protection.
k Monitor Out jacks provide a means for monitoring Local Mic Input audio channels or for monitoring any CobraNet Audio
Channel within any Bundle.
l Direct Out jacks emit a balanced analog line-level version of each Mic Input and are fed from a point just before the A/D
converter. Each Direct Out signal is post the following: Mic/Line Mode; Mute; Trim (Trm) control, Gain relays, Low/High
Cut filter (Fltr) and Limiter (Lim). Phantom power (+48 VDC) is, of course, not present on the Direct Outputs.
