VCL Products > GPS / GNSS Time Servers

GPS / GNSS / NavIC NTP Time Servers

VCL offers a wide range of NTP Time Servers with ITU-T G.811 Primary Reference Clock for precise time synchronization across critical infrastructure such as utilities, transport, airports, defense, ISPs, and secure private networks. These servers feature integrated multi-band GNSS receivers that lock to GPS/GNSS/NavIC satellites with anti-jamming and anti-spoofing protection. Unlike public NTP sources that expose networks to cyber threats, VCL’s GPS/GNSS-based Stratum 1 servers ensure secure, reliable, and isolated time synchronization for 3G/4G/5G providers and private organizations.

Summary Flyer (PDF)

VCL-2145-DE: GPS/GNSS (1+1), PRC (G.811), PTP, NTP, IRIG-B

VCL-3048: NTP Time Server, IRIG-B
Inputs:	GPS/GNSS
Outputs:	NTP, 1PPS, IRIG-B (Unmodulated BNC, RS-232, RS-485 / RS-422)
Power Supply:	12V DC, 24V DC, 48V DC
Service Capacity:	Suitable for servicing up to 3000 NTP / SNTP requests per second.
	Read More...	Data Sheet (PDF)

VCL-2156: NTP, PRC (ITU-T G.811), IRIG-B DCLS & AM
Inputs:	GPS/GNSS/NavIC, 1PPS and NTP
Outputs:	NTP, 2.048MHz, 10MHz, 1PPM/1PPH, 1PPS, 1PPS Adj, ToD NMEA 0183, IRIG-B (Unmodulated and Modulated)
Power Supply:	24V DC, 48V DC, 110-220V DC, 110-240V AC, 1+1 Redundant PSU
Service Capacity:	Suitable for servicing up to 7500 NTP / SNTP requests per second.
	Read More...	Data Sheet (PDF)

VCL-2156: GigE NTP Server
Inputs:	GPS/GNSS (1+1)
Outputs:	4 x Gigabit NTP ( RJ45), 1 x Gigabit PTP (RJ45)
Power Supply:	24V DC, 48V DC, 110-220V DC, 110-240V AC, 50/60 Hz
	Read More...	Data Sheet (PDF)

VCL-2156-EXT, NTP Time Server, GPS / GNSS / NavIC
Inputs:	GPS / GNSS / NavIC, NTP and 1PPS
Outputs:	1PPS, 1PPS Adj., 2.048MHz, 10MHz, 1PPM, IRIG-B (Modulated / Unmodulated - BNC, Unmodulated - RS232, RS485, RJ45, ST - Optical), ToD, 4 User selectable time and frequency output modules.
Power Supply:	1+1 Power Supply option, 24V DC, 48V DC, 110-220V DC, 110-240V AC, 50/60 Hz
	Read More...	Data Sheet (PDF)

VCL-2145-D: GPS/GNSS (1+1), PRC (G.811), PTP, NTP, IRIG-B
Inputs:	GPS/GNSS (1+1), 10MHz, 2.048MHz, 2.048Mbit/s (E1)
Outputs:	NTP, PTP, 1.544Mbit/s (T1) / 2.048Mbit/s (E1), 2.048MHz, 10MHz, 1PPS, 1PPM, IRIG-B, ToD NMEA-0183
Power Supply:	24V DC, 48V DC, 110-220V DC, 110-240V AC, 1+1 Redundant PSU
Service Capacity:	Suitable for servicing up to 10,000 NTP / SNTP requests per second.
	Read More...	Data Sheet (PDF)

VCL-2145-DE: GPS/GNSS (1+1), PRC (G.811), PTP, NTP, IRIG-B
Inputs:	GPS/GNSS (1+1), 10MHz, 2.048MHz, 2.048Mbit/s (E1)
Outputs:	NTP, PTP, 1.544Mbit/s (T1) / 2.048Mbit/s (E1), 2.048MHz, 10MHz, 1PPS, 1PPM, IRIG-B, ToD NMEA-0183
Power Supply:	24V DC, 48V DC, 110-220V DC, 110-240V AC, 1+1 Redundant PSU
Service Capacity:	Suitable for servicing up to 8900 NTP / SNTP requests per second.
	Read More...	Data Sheet (PDF)

VCL-Mega: NTP Time Server
Inputs:	GPS/GNSS, 1PPS
Outputs:	16 x 1G/10G NTP Outputs
Power Supply:	110~240VAC, 1+1 Redundant Hot-swappable PSU
Service Capacity:	Suitable for servicing up to 1 Million NTP / SNTP requests per second.
	Read More...	Data Sheet (PDF)

VCL-2103: High Performance NTP Sub-Master Clock
Inputs:	1 x 10/100/1000BaseT Ethernet NTP Input Port with automatic synchronization with multiple (redundant) NTP Server(s)
Outputs:	4 x 10/100BaseT Ethernet NTP / SNTP Output Ports for slave device(s)
Power Supply:	24V DC, 48V DC, 110V DC / 220V DC, 90V AC-240V AC, 50/60 Hz
	Read More...	Data Sheet (PDF)