Masterclock NTDS Series User Manual – v2 – December 2012
5
Power, Accessories and Software
Due to the large variety of clocks covered in this User Manual,
the list of accessories below is for illustrative purposes. Refer to
your sales order for actual items shipped.
NTDS digital time display (clock)
Mounting bracket
Cat 5 patch cable
CD-ROM (with WinDiscovery software application and
User Manual pdf)
Power cord – note Cloverleaf (“Mickey Mouse”)
C5 style plug (below) is model specific
PoE (Power over Ethernet) models require an IEEE 802.3af
compliant PoE injector or switch with +48VDC output on
spare pairs of the network cable conductor 4 and 5, with
corresponding 48 VDC returns on pins 7 and 8 or by sharing
the data pins and their returns. This single network cable
carries both data and power. Maximum cable distance is
328 feet (100m).
RELAY OPTION
When the NTDS digital display is not locked to a NTP
reference, the dry contact relay will actuate.
The NTDS request time from the primary NTP time server.
If no response, then it will send a request to the secondary
NTP time server. If the NTDS is unable to communicate
with either NTP time servers, the NTDS will change its
Current Reference from “NTP” to “Internal Osc
(oscillator)”. This is considered an un-locked condition and
the dry contact relay will actuate.
Cat5 patch cable CD-ROM IEC power cord
(select power option when ordering)
Above left:
AC power – Insert the IEC AC
power cord (included) into the IEC socket
located on the back panel.
Above right:
Ethernet PoE – Insert the CAT5
Ethernet patch cable (included into the RJ45
socket.
TERMINAL BLOCK
Top:
Pin 1 – NO (Normally Open)
Middle:
Pin 2 – COM (Common)
Bottom:
Pin 3 – NC (Normally Closed)
