The Audio & Design NetClock is an accurate reference display clock for studios and broadcasters, it obtains its
reference time over your Ethernet LAN from either a local network time server or an international time standard
such as the National Physical Laboratory in the UK (ntp1.npl.co.uk) or the National Institute of Standards and
Technology in the USA (time.nist.gov).
Please read the installation & configuration instructions below, before installing your NetClock.
Power Supply
The NetClock requires a DC power source of approximately 12v DC @ 1A this can be supplied to the clock by two
methods.
1.
Power Over Ethernet – either powered directly from an Ethernet switch (10/100) that has internal 802.3af
POE powering or by external “midspan” power injector such as Phihong PSA16U-480, PowerDsine PD-
3001/AC or any 802.3af compliant “midspan” PSU that can supply up to 12Watts.
Power Over Ethernet
802.3af LAN Switch
NetClock
POE Power
or
LAN Switch
Non-POE
NetClock
POE Power
Optional
“MidSpan” PSU
2.
External 12v 1A DC PSU, this uses the PCB mounted DC connector that is accessible from the rear of the
clock. DC connector required is 2.1/5.5mm type with center pin wired as +ve (typ12v).
LAN Switch
Non-POE
NetClock
External DC Power
Optional
DC PSU
Audio & Design can supply either of these types of external power supplies as an extra cost option.
Network
The NetClock uses standard Ethernet technology and components and can be connected directly to your network
using a “straight through” RJ45 to RJ45 CAT5 UTP lead. The NetClock uses a 10Base-T connection; if you use
managed switches then ensure that the port the NetClock connects to is set auto-negotiate duplex and speed.
By default the NetClock will attempt to get its IP address using a DHCP server when first connected to your
network. If this is not available the NetClock will use a default IP address of 192.168.0.27 and sub-net mask of
255.255.255.0 You will need to manually set a workstation to the same network but different host address in-order
to configure the NetClock. We suggest a workstartion setting of 192.168.0.1 you can use either a web browser
such as Mozilla Firefox (
www.mozilla.com
) or Microsoft Internet Explorer “point your browser to a URL of
192.168.0.27 and set the IP address, Sub-net mask & Default Gateway fields to match your network (note: you will
loose connectivity to the NetClock as soon as your change its IP address). Or you can use the NetClock.exe utility
program the most current version of which is available from
www.adrl.co.uk/NetClock/
