TCG 01 User Manual
9
th
Edition: February 2007
Page 41 of 49
Correct operation of the Network Time Server can be verified by installing an SNTP
client on any Windows-based PC attached to the network. A very simple and effective
client, “Dimension 4” is included with the TCG 01 package (3 licenses are provided.
Additional licenses may be purchased from Thinking Man Software:
www.thinkman.com
)
All that is required to use “Dimension 4” is, after the program is installed on the PC, add
the IP address of the TCG 01 NTS to the list of Time Servers, and select it. “Dimension 4”
will then use this address to fetch time information and sync the PC clock. “Dimension
4” installs complete with a list of internet time server addresses. To avoid any confusion,
it is suggested that the user remove all of these addresses, leaving only the local NTS
address.
F
Figure 18 – Time server port on TCG-01 showing lck, lnk, err, and sec indicators
The green
lnk
LED indicator on TCG 01 lights when a network cable (UTP drop lead) is
correctly connected between the TCG 01 RJ45 port and the local network hub/switch.
The other green LED, the
lck
indicator, lights up steadily when the NTS is correctly
synchronised with UTC time. Provided that TCG 01 is already synced to UTC time from
the GPS satellite constellation (Front Panel
SYN
led on), the
lck
indicator should stabilise
and remain on. If the
lck
indicator does
not
stabilise “on”, even though TCG 01 is in sync
with the GPS time, the most likely problem is that the NTS satellites parameter is set at
too high a value.
The two lower indicators
err
and
sec
should remain off during normal operation. These
indicators may flash for a few seconds immediately following power-on, but after the
unit has initialised and has a valid network address, they should go off and stay off. They
will flash continually when the NTS module is in set-up mode.
