VCL Products > Time and Frequency > NTP Display Clock
VCL-NTP Display Clock,
Industrial NTP Synchronized Digital Clock
The VCL-NTP Display Clock is a rugged industrial network time clock designed to provide highly accurate time display by synchronizing with multiple upto 4 Network Time Protocol (NTP) servers over Ethernet. Engineered for mission-critical applications, it delivers reliable and continuous time synchronization for substations, transportation systems, industrial automation, utilities, control rooms, airports, manufacturing facilities, and data centers.
The clock supports synchronization with up to four independent NTP server sources, providing multiple-source redundancy and automatically switching to the best available server if the primary NTP source becomes unavailable or its clock quality degrades. During temporary network outages, an integrated high-stability internal oscillator maintains accurate time until synchronization is restored.
Featuring dual Ethernet interfaces, IPv4/IPv6 networking, SNMP monitoring, Syslog support, configurable brightness, and flexible mounting options, the VCL-NTP Display Clock provides a dependable timing solution for 24×7 industrial environments.
Available in Two Models:
- Model: VCL-NTP Display Clock-55
Digit Height: 55 mm (2.16")
Viewing Distance: Up to 20 m
Mounting: Wall / Rack mount - Model: VCL-NTP Display Clock-22
Digit Height: 22 mm
Viewing Distance: Up to 5 m
Mounting: Console / Table-top
Viewing distance depends on ambient lighting and installation height
Application:
- Electrical Power Substations
- Smart Grid & SCADA Systems
- Airports & Air Traffic Control
- Railway & Metro Stations
- Industrial Automation
- Manufacturing Plants
- Oil & Gas Facilities
- Defense Installations
- Mining Industry
- Data Centers
- Control Rooms
- Telecommunication Networks
- Commercial Buildings
Key Features:
- High-precision NTP synchronized digital clock
- Supports up to four redundant NTP server Sources
- Automatic NTP server failover
- High-stability internal oscillator for holdover
- Dual 10/100 Mbps Ethernet interfaces
- Dedicated Management and NTP network ports
- IPv4 and IPv6 support
- Static IP or DHCP configuration
- SNMP V2/V3 monitoring
- Remote Syslog support
- Secure password-protected Web GUI and CLI
- Firmware upgrade via Ethernet
- Adjustable LED brightness with scheduling
- UTC, Local Time and World Time display
- Configurable Time Zone
- Daylight Saving Time (DST)
- High-brightness LED display
- TIME: HH:MM:SS
- Date: DD:MM:YY
- Industrial hardened design
- Hardware reset switch for device restart and reset
- Surge protected Ethernet interfaces
Display Features:
- High-brightness seven-segment LED display
- Adjustable brightness
- Scheduled brightness control
- Automatic Time/Date alternating display
- Non-glare front panel
- Synchronization status LED indication
- Sync Loss LED indication
Synchronization:
| Parameter | Specification |
| Time Source | NTP Server |
| Supported NTP Servers Sources | Up to 4 |
| Redundancy | Automatic Failover |
| Holdover | High-Stability Internal Oscillator |
| Network Protocol | IPv4 / IPv6 |
| Time Display | UTC / Local / World Time |
| Time Format | 12 or 24 Hour (HH:MM:SS) |
| Date Format | MM:DD:YY |
| Alternate Display | Time / Date (programable) |
Network Interface:
| Parameter | Specification |
| Management Port | 10/100Base-T Ethernet (RJ45) |
| NTP Port | 10/100Base-T Ethernet (RJ45) |
| IP Assignment | Static or DHCP |
| IP Protocol | IPv4 / IPv6 |
Performance:
| Parameter | Specification |
| Synchronization Accuracy | Up to ±1 ms (Network Dependent) |
| Holdover Drift | Less than ±0.1 second per 24 hours |
| Synchronization Source | NTP |
| Redundant NTP Server Sources | 4 |
Management
- Secure Web GUI
- CLI
- USB Local Configuration
- Firmware Upgrade
- Factory Reset
- Remote Reboot
Network Management
- SNMP v2
- SNMP v3
- Multiple SNMP Trap Destinations
- Syslog Server Support
- Event & System Logs
User Management
- Multi-user access
- Password protection
- Login history
- Session timeout
VCL-3048: NTP Time Server, IRIG-B VCL-2156: NTP, PRC (ITU-T G.811), IRIG-B VCL-2156-EXT: NTP Client / NTP Slave VCL-Mega NTP Server VCL-2145-D: GPS/GNSS (1+1), PRC (G.811), PTP, NTP, IRIG-B VCL-2145-DE: GPS/GNSS (1+1), PRC (G.811), PTP, NTP, IRIG-B GPS/GNSS, Primary Reference Clocks GPS/GNSS NTP Time Server PTP IEEE-1588v2 Grandmaster GPS to IRIG-B, NTP to IRIG-B, PTP to IRIG-B Time Distribution Power Utilities Oil & Gas Solutions Railways and Metro Network Communication solutions Airport Communications Mobile Backhaul