GPS / GNSS Time Servers
NTP Client / NTP Slave

VCL Products > GPS / GNSS Time Servers > VCL-2156-EXT: NTP Client / NTP Slave
NTP Client / NTP Slave
NTP Client / NTP Slave
NTP Client / NTP Slave
NTP Client / NTP Slave - Front
NTP Client / NTP Slave
NTP Client / NTP Slave - Back

VCL-2156-EXT: NTP Client / NTP Slave (Extension Unit)

Get Data Sheet

The VCL-2156-Ext, NTP Extension (NTP Client), Time Distribution Unit is designed to provide up to 16 IRIG-B outputs and / or 16 IRIG-B and / or 1PPS (Pulse per second) and / or NMEA-0183 (mix and match) that is synchronized from a NTP Server to provide time synchronization to private networks such as Electric Sub-Stations, Railways and Metro (ticketing and platforms) networks, Airports and Air-Traffic Control facilities, Power Distribution and Transmission companies, Oil and Gas Utilities, ISPs and Cable TV networks as well as to Campus networks. The VCL-2156-Ext operates as NTP Receiver / NTP Client with multiple interface option. Our solution simultaneously supports IRIG-B (Mudulated / Unmodulated), NMEA 0183, 1PPS (Pulse per Second), and optical 1PPS port.

NTP Client NTP Slave NMEA-0183 IRIG-B 1PPS

Features and Highlights

  • Multi service platform - User selectable output modules
  • Up to 6 User selectable output modules
    (Add any 4 output cards, in any combination, Please specify in order)
    • Up to 16 x IRIG-B Un-Modulated outputs (RS422, RS232)
    • Up to 16 x IRIG-B Un-Modulated outputs (BNC)
    • Up to 16 x IRIG-B Modulated outputs (BNC)
    • Up to 8 x NMEA-0183 outputs (RJ45)
    • Up to 16 x 1 PPS outputs (BNC)
    • Up to 4 x 1 PPS outputs (ST, 850nm, MM)
  • High accuracy clock
  • Leap Second Correction Support
  • DC or AC Power Supply options.
Input: NTP / SNTP
Outputs: IRIG-B (Modulated / Unmodulated - BNC, Unmodulated - RS422, RJ45), ToD (Time-Of-Day, RJ45) NMEA 0183, 1 PPS (BNC, ST - Optical)
Power Supply: 24V DC, 48V DC, 110-220V DC, 110-240V AC, 50/60 Hz
Power Consumption: < 10W at ambient (steady state 24°C)

Management and Monitoring:

  • USB serial port
  • English Text CLI commands

PPS + NMEA output interface

PPS + NMEA Outputs Number of Interfaces Connector
PPS 2 outputs per card BNC
NMEA-0183 2 outputs per Card RJ45
Maximum cards Up to 4 outputs cards per Chassis 8 x BNC, 8 x RJ45
Maximum outputs 8 x PPS Outputs and
8 x NMEA Outputs		 8 x BNC,
8 x RJ45

PPS Output Interface

PPS Output interface Number of Outputs Connector
1 PPS 4 outputs per card BNC
Maximum cards Up to 4 cards per chassis BNC
Maximum outputs 16 outputs per chassis BNC

IRIG-B (Modulated) output interfaces

IRIG-B (Modulated) Output interface Number of Outputs Connector
IRIG-B (Modulated) Outputs 4 outputs per card BNC
Maximum cards Up to 4 cards per chassis BNC
Maximum outputs Up to 16 outputs per Chassis BNC

IRIG-B (Un-modulated) output interfaces

IRIG-B (Un-modulated) Output interface Number of Outputs Connector
IRIG-B (Un-modulated) Outputs 4 outputs per card BNC
Maximum cards Up to 4 cards per chassis 16 x BNC
Maximum outputs Up to 16 outputs per Chassis 16 x BNC

IRIG-B (Un-modulated RS422) output interfaces

IRIG-B (Un-modulated) Output interface Number of interface Connector
IRIG-B (Un-modulated) Outputs RS422 Protocol 4 outputs per card RJ45
Maximum cards Up to 4 cards per chassis 16 x RJ45
Maximum outputs Up to 16 outputs per Chassis 16 x RJ45

Optical Pulse card

Optical Pulse Output interface Number of Outputs Connector
Optical Output 1 outputs per card ST, 850nm, Multi-Mode
Maximum cards Up to 4 cards per chassis 4xST, 850nm, Multi-Mode
Maximum outputs Up to 4outputs per Chassis 4xST, 850nm, Multi-Mode

Application Diagram


NTP Time Server with IRIG-B Outputs

Block Diagram


NTP Time Server with IRIG-B Outputs

Valiant Communications is an ISO 9001:2015, ISO 10001:2018, ISO 14001:2015, ISO 27001:2022 and ISO 45001:2018 certified equipment manufacturer.

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