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SC Series GPS\LF NTP Network Time Server

PLEASE NOTE: TimeTools SC Series has now been superseded by the T100 Compact GPS NTP Server.

NTP Time Server - TimeTools SC Series

Key Features

  • Competitively Priced, True Stratum 1 NTP Time Servers
  • Compact Aluminium Desktop Enclosure
  • GPS, Radio and Dual Reference Clock Options
  • High Stability TCXO Options for Extended Holdover

Key Benefits

  • Accurately Synchronize Windows, Linux and UNIX Clients
  • Accurate, Reliable, Source of Time Inside Your Firewall
  • Serves Thousands of Network Time Clients
  • Accurately Synchronize Time Critical Processes

SC Series NTP Server Overview

TimeTools new SC Series NTP servers are a range of Linux-based true Stratum 1 NTP Network Time Servers that provide a real breakthrough in price and performance.

Housed in a rugged, yet compact, aluminium desktop enclosure the SC series takes up minimal valuable space.

By utilising a customized Linux kernel and an unmodified version of the latest network time protocol distribution, NTP version 4.2, the SR/SC series offers true NTP/SNTP functionality.

“The SC series provides a reliable, highly accurate, traceable, source of time inside your firewall”.

UPDATE !!! The SR/SC series is now provided with a cutting-edge high-sensitivity GPS receiver that can often operate with an indoor located GPS antenna. Additionally, the new receivers can operate from a single satellite-in-view making operation from a window often possible. These features potentially provide a great saving on installation costs when compared to traditional roof-mounted GPS antennas. Of course, our GPS antennas are completely weather-proof and can still be roof-mounted, if required.

Multiple Reference Clock Options
Multiple optional external reference clock combinations can be provided with the SC series; GPS, MSF radio, DCF-77 radio and dual GPS / radio reference capabilities. They provide true flexibility along with high stability and performance.

The SC series is also provided with a cutting-edge high-sensitivity GPS receiver that can often operate with an indoor located GPS antenna. Additionally, the new receivers can operate from a single satellite-in-view making operation from a window often possible. These features potentially provide a great saving on installation costs when compared to traditional roof-mounted GPS antennas.

Of course, our GPS antennas are completely weatherproof and can be roof-mounted outdoors, if required.

High-stability disciplined TCXO oscillator options are available to maintain accurate time for extended periods in the event of GPS / radio reference clock signal loss.

Easy to Configure and Maintain
An easy to use password-protected web interface is provided for system configuration and management. FTP can be utilised to download NTP statistics and upload firmware upgrades, provided by TimeTools free of charge.

Industry Leading 5-Year Warranty
The SC Series NTP Servers are low-power, convection cooled, devices with no moving parts, aiding long-term reliability. Our confidence in the reliability of the SC range of devices is reflected in the provision of an industry leading 5-year warranty.

Customer Testimonials

Product: SC Series NTP Server
How would you rate your opinion of our company? Very High
How would you rate your opinion of our products? Very High
How willing are you to recommend our products to others? Very Willing
Feedback: “NHR was looking for a dedicated time sever as the Charity does not have direct internet access at the studio. We needed to have our PCs on the LAN synchronized to the correct time to enable the 24-hour broadcasting service (using PSquared’s Myriad suite) to run to time.
TimeTools provided excellent pre-sales advice, making suggestions based on our needs, rather than what they wanted to sell us. The SC Series NTP server is a very high quality product which has so far proved 100% reliable. TimeTools continues to provided occasional after-sales support when required which is the measure of a good company.
We would not hesitate to recommend Time Tools to anyone in the public, private or voluntary sector and we were delighted to buy British!”
Iain Miles
Station Director
Northumberland Hospital Radio, UK
More customer testimonials.

SC7105 – LF\GPS Referenced
The SC7105 is an entry-level Linux-based true NTP time server at a highly competitive price. They can utilise GPS or LF radio time references to provide stratum 1 NTP functionality, ideal for synchronizing digital wall clocks and smaller networks.

SC9205 – LF\GPS Dual Referenced
The mid-range SC9205 model provides a high specification NTP network time reference. It incorporates a high-throughput Ethernet network interface, combined with the ability to accept GPS, LF radio or dual reference GPS / LF radio external time references. The SC9205 are ideal time reference where a large number of network time clients are to be synchronized accurately and reliably.

SC9705 – LF\GPS Dual Referenced With TCXO

The top-of-range SC9705 has all of the advanced features of the SC9205 but also incorporates a high-stability GPS disciplined Temperature Controlled Crystal Oscillator (TCXO). The high precision TCXO backup reference clock provides extended holdover periods in the event of primary reference signal loss.

Model Comparison Chart

   LAN 10/100 Mbit BaseT , RJ45 auto-sensing
Timing Protocols
   NTP v2, v3, v4, SNTP v3, v4
   NTP Peering
   NTP Broadcast
   NTP MD5 Authentication
   NTP Requests / Second (typical)
> 200
> 1000
> 1000
   Maximum Number of NTP Clients (typical)
> 64,000
> 64,000
   NMEA RS232 Output
Time Reference Options
   12 Channel GPS Receiver High Sensitivity
Indoor, Over-Determined Clock, Single
Satellite Operation
   LF – MSF (UK) Reference Clock
   LF – DCF-77 (German) Reference Clock
   Dual GPS and LF Radio Reference Clocks
Monitoring and Reporting
   SNMP v1 / v2c Trap Alarms
(Can be disabled)
   System Logging (SysLog)
   Remote System Logging (Remote Syslog)
   GPS Satellites in View & Signal to Noise
Ratio (SNR)
Configuration Protocols
   HTTP (Web) / HTTPS
(SSL Secure Sockets Layer)
   SSH (Secure Shell), SCP
(Secure Copy Protocol)
   Console (RS232)
Oscillator Options
   Standard Crystal Oscillator
   High Stability GPS\LF Disciplined TCXO
Timing (Typical)
   GPS Accuracy
1 ms
60 ns
60 ns
   LF Accuracy
10-50 ms
1-20 ms
1-20 ms
   NTP Accuracy (typical, GPS Synchronized)
<10 ms
< 250 us
< 250 us
   24 Hour Holdover
(GPS disciplined, typical @ 25C)
<±10 ms
   Buffered 1 PPS Output on BNC

Mechanical\Environmental Specification

Dimensions 168 x 165 x 54 mm (6.5″ x 6.5 ” x 2.2 “)
Construction 1.8mm Aluminium
Weight approx 0.8Kg (1.84lbs)
Power Supply Universal 100-250 VAC 50- Hz CE/UL/CSA Approved PSU
(Optional 9-36V DC IN and 85-250V DC IN versions available)
Power Consumption approx 5W
Operating Temperature 0C ~ +50C (Extended temperature range options available)
Storage Temperature -10C ~ +60C (Extended temperature range options available)
Relative Humidity 95% non-condensing
Approvals CE, EN61000-6-1, EN61000-6-3

Input\Output Specification

LAN 10/100 Mbit BaseT , RJ45 auto-sensing
Serial Console 9 way ‘D’ RS232, 9600, N, 8, 1
GPS Input TNC female
LF/AUX Input: 9 way ‘D’
Power Double Fused IEC Inlet
PPS (optional) Buffered pulse per second output on BNC (optional)

Integral GPS Receiver Specification

Type True GPS Timing Receiver, 12 Channel, L1 1575.42 MHz
Features High sensitivity, Over-determined clock modes,
Single satellite in view
Timing GPS Time Traceable to UTC (USNO)
Accuracy +/- 60 nsec UTC (typical)
(Cold Start)
38 sec

SC Series NTP Time Servers Product Codes

SC 7105 GPS \ LF NTP Server SC7105-20P
SC 9205 GPS \ LF \ Dual Reference NTP Server SC9205-20P
SC 9705 GPS \ LF \ Dual Reference NTP Server with TCXO SC9705-20P
Scope of Supply: SC Series NTP Time Server, IEC Mains Lead,
Console Configuration Cable, Product User Guide and NTP Client CD.

(Optional 9-36VDC IN, 85-250VDC IN and extended temperature range versions available.)

Optional SC Series GPS Reference Clock Antennas and Accessories

Jam-Resistant Pole Mounting GPS Antenna and Mount T-3072
30m RG58 Cable TCX-030
50m LMR195 Cable TCX-050
100m LMR400 Cable TCX-100
Additional cable lengths available on request
GPS Surge Suppressor SPP-GPS
GPS Amplifier – 20db T-AD200-8
LF / GPS over optical fibre systems P.O.A
GPS Splitters – 2 to 32 way, compact or rack-mount P.O.A

Optional SC Series LF (Radio) Reference Clock Antennas

Ultra-High-Gain MSF (UK) Antenna SR-MXS-00
Ultra-High-Gain DCF-77 (German) Antenna SR-DXS-00
LF Radio Surge Suppressor LF-SPP

How To Buy

TimeTools sells directly to you!

Typically, our products are available from stock and can be dispatched to locations world-wide.

You can purchase any of our products by contacting us directly for a quotation, advice or to set up an account.

Additionally, we accept most credit cards, including Visa and MasterCard.

Request A Quote

Alternatively, please contact one of our approved representatives in your region.

About Us

TimeTools is a leading manufacturer of precise time references for synchronizing servers, workstations and computer network infrastructure. For well over a decade, TimeTools has been providing timing solutions to high-profile companies world-wide. Here is a small selection of companies who trust TimeTools for their timing requirements:

TimeTools Customers
TimeTools Customers

See more customer references.
See more customer testimonials.

Quality: ISO9001

TimeTools is an ISO9001:2008 accredited company. ISO9001 accreditation demonstrates that quality assurance and customer satisfaction is of paramount importance to us.

TimeTools is an ISO9001:2008 Registered Company

We are also a member of the CE Marking Association, which enables us to meet our legal obligations with regards to the CE Mark and product conformity, and with keeping up-to-date with changes in legislation.

CE Marking Association Logo
CE Marking Association Logo