47xxN Series Time Zone Display
Operating and Installation Instructions
NTP Client
47xxN series time zone displays are primarily intended to be synchronised via NTP/SNTP from a remote
time server located on the customers TCP/IP Ethernet network. Up to to 4 remote NTP time servers can be
specified either fully automatically using DHCP option 42 configured on your company's DHCP server or
manually by the user.
If manual configuration of the NTP time servers is required, it the first server IPv4 address can be
programmed using the IR remote or clock switches as detailed below. Up to 3 more time server addresses
can be programmed into the digital clock using the cMon clock management software.
Clock configuration
1
Press ‘Menu’ or ‘Up’ button to access clock settings menu.
2
Press ‘+’ button until ‘Fu Sy’ is displayed
3
Press ‘Up’ button to access Synchronisation menu.
4
Press ‘+’ button until ‘NTP’ is displayed.
5
Press ‘Up’ button.
If Clock is set to ‘Full DHCP’ mode the display will show DHCP and the ‘Up’ arrow should be pressed again to
return to the time display.
If clock is to ‘DHCP’ or ‘Static’ modes the 4 bytes of the first NTP time server address can be programmed in
same manner as detailed for the IP address in Section 7.
6
Press ‘+’ & ‘-’ buttons until each of the 4 address bytes is displayed.
7
Press ‘Up’ to return to time display
GPS and GLONASS Synchronisation
The 47xxN series time zone displays can be
configured to synchronise to GPS or GLONASS
time code when connected to either the
488HS4 GPS Receiver or 488HS4-GLONASS
Receiver (supplied separately) as follows.
Clock configuration
1 Press ‘Menu’ or ‘Up’ button to access clock settings
menu.
2 Press ‘+’ button until ‘Fu Sy’ is displayed
3 Press ‘Up’ button to access Synchronisation menu.
4 Press ‘+’ button until ‘GPS’ is displayed.
5 Press ‘Up’ button to select GPS synchronisation.
The status of the GPS/GLONASS receiver is shown via the three LEDs on the receiver as follows.
488HS4 GPS receiver status LEDs
Red LED
On
Receiver is powered
Yellow LED
Flash
Receiver is searching for satellites
On
Receiver is locked to three or more satellites and receiving time information.
Green LED
Flash
GPS receiver locked.
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Issue 2.1
