NAIM NDX - Reference Manual - page 6
4
NDX Installation and Connection
2.8.3 Network Settings
The NDX is set up when originally shipped not to require
any on-site TCP/IP configuration but to connect to
a network automatically (it uses DHCP by default).
However, if your NDX has been previously used, its network
configuration may have been altered leaving it unable
to connect automatically. If this appears to be the case
ensure that DHCP is selected in the Network Settings
menu (see Section 4.5 of this manual) and re-start NDX. If
problems still persist contact your retailer, installer or Naim
Audio directly.
Note:
Before reporting network connection problems carry
out a Factory Reset operation. Select Reset All Settings
from the Factory Settings setup menu. See Section 4.10.
Note:
A NDX switched on without a working wired network
connection will only be able to connect to a home
network wirelessly. To use an ethernet (wired) connection,
switch the NDX off, connect the network and switch it on
again.
Note:
For internet radio to operate, the NDX requires
connection to a broadband internet service.
2.9 System Automation
NDX control can be linked using
System Automation
to
the control of some Naim preamplifiers, CD players and
the Naim DAC. System Automation enables for example,
preamplifier inputs to be selected via the NDX, or for
n-Stream transport functions to control a CD player. To take
advantage of System Automation, connect one of the
NDX rear panel
Remote Out
sockets to a preamplifier, CD
player or DAC
Remote In
socket. Use a cable terminated
with a 3.5mm jack plug at one end and a 3.5mm jack or
phono plug as necessary at the other end.
Using both NDX Remote Out sockets, for example, one
connected to a preamplifier and one connected to a CD
player enables comprehensive system control via just one
user interface (handset or n-stream iPhone app).
Note:
Stereo and mono 3.5mm jack to 3.5mm jack can
be used for System Automation. If a stereo 3.5mm jack to
phono plug cable is used, connect the left channel phono
plug.
Note:
NDX System Automation is switched off by default. A
full description of its configuration and use can be found in
Section 4.9.
2.10 External Control
The NDX is fitted on its rear panel with a 3.5mm jack
Remote In
socket and a standard
RS232
serial interface
socket. The Remote In socket can be used for RC5 remote
control of the NDX via a wired connection or a remote IR
repeater.
The RS232 socket enables firmware upgrades and
diagnostic tests to be carried out. Contact your retailer for
more information if required.
2.11 Signal Ground Switch
The NDX is fitted on its rear panel with a
Signal Ground
switch offering two positions:
Chassis
and
Floating
. Select
the
Chassis
position unless NDX is connected in a hi-fi
system incorporating another earthed source component,
or mains “hum” is audible through the loudspeakers.
Contact your retailer, distributor or Naim for advice if
necessary.
Note:
“Connected” in the context above means an
analogue audio signal cable that includes an earth
connection.
Note:
All Naim CD players are earthed so the Signal
Ground switch should be set to floating if one is connected
in the system (unless a digital signal connection is used).
Note:
The Signal Ground switch setting is not affected by
the use of an external power supply.
No damage will be done if the wrong Signal Ground
position is chosen, however the system sound quality may
be compromised.
2.11.1 General Audio Connection Notes
The NDX mains earth (ground) should always be
connected regardless of what other equipment is used.
Note:
If an external power supply is used the NDX mains
earth is connected through the Burndy connection cable
to the power supply mains earth.
A mains earth grounds the chassis and the electrostatic
screen within the transformer, and is only connected to the
signal negative if the
Signal Ground
switch is set to
Chassis
.
In order to avoid hum loops, the signal negative of the
whole system should be connected to the mains earth in
one place only.