User manual

NTD Clocks User Manual - Rev 2.2.2 Jan-10
4
© Masterclock
®
, Inc
AC Versions:
AC models of the NTD clock are supplied with an IEC power cord
POE Versions:
Power Over Ethernet (POE) models will require an IEEE 802.3af compliant POE injector, or switch
with +48VDC output on spare pairs of the network cable conductor 4 & 5 with corresponding 48 VDC
returns on pins 7 & 8, or by sharing the data pins and their returns.
[Important Note: the NTD clock with an installed POE (Power Over Ethernet) option, will obtain its
power directly from a POE powered source using the spare wires of a standard network cable with
RJ45 connector for input power. The POE source must be a fully compliant IEEE 802.3af PSE
operating at +48VDC. POE sources not IEEE 802.3af compliant might damage the clock and void
the warranty. ]
o Insert the standard Cat 5 or Cat 6
network cable into the RJ45
connector on the rear of the unit.
o
Insert the AC power cord into the
IEC connector on the rear of the unit.
o
Insert the standard Cat 5 or Cat 6
network cable into the RJ45
connector on the rear of the unit.
o
The other end of this network cable
must be connected to an IEEE
802.3af compliant PSE (Power
Sourcing Equipment) with +48VDC.
o This single network cable will carry
both data and power. Maximum
distance is 100m/328ft