Introduction - Symmetricom ND-SERIES User Manual

Introduction

Network Time Display (ND) is a series of versatile, multi-featured Network Time Protocol (NTP)
driven digital clock displays. These devices have a built-in SNTP (Simple Network Time Protocol)
client and are designed to display time referenced to either an internal or Internet provided NTP server,
using SNTP. The ND network clocks can be configured to display local time for any time zone
worldwide by enabling time zone offset and automatic DST (Daylight Saving Time) adjustments. This
device allows for maintenance free, reliable, quiet operation.
The ND series II, consists of the following ND-2 and ND-4 (6 digit display) members:
DisplayType
Name
ND-2
2.3" Characters,
Rackmount –
2RU
ND-4
4" Characters,
Wallmount
The ND clock line includes the WinDiscovery Windows based network management software as
well as a telnet interface for configuration, and maintenance. Other features include:
• Time zone offsets (to one second resolution) support any biasing requirements
• Complete flexibility in daylight savings time configurations
• Real-time clock backup retains time during loss of power and/or NTP
• Primary and secondary NTP source with fault-tolerant switching
• Supports NTP broadcast, multicast, and query (unicast) modes
• Fully configurable network settings, including DHCP/BOOTP support.
• Security features include password protection of configuration, encrypted communication, and
the ability to disable telnet management access.
• Selectable Display formats
• Adjustable brightness
• Status display to remotely 'view' clock display through WinDiscovery application.
ND Clocks User Manual - Rev 2.0.1 Sep-08
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Power options
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(Part numbers)
AC model
(820-1442-AC)
POE model
(820-1442-POE)
AC model
(820-1444-AC)
POE model
(820-1444-POE)
Six Digit Digital Time/Date
12 hour (with PM indicator) time
24 hour time hh:mm:ss
MM:DD:YY date
DD:MM:YY date
Worldwide Time Zone
Worldwide Automatic DST
Please refer to the Specifications section of this document for
additional details regarding each model and available options.
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Symmetricom , Inc.