SecureSync SAASM GPS Clock


SecureSync® SAASM combines Spectracom’s precision time and frequency technology with secure Selective Availability Anti-Spoofing Module (SAASM) based GPS receiver.

This system was conceived specifically to satisfy the Joint Chiefs of Staff mandate that all newly-fielded Department of Defense GPS systems be SAASM-compliant (CJCSI 6130.01C: Enclosure E). SecureSync SAASM offers a choice between two SAASM receiver options: a 24-channel Miniature Ruggedized Unit (MRU) and a 12-channel Ground-Based GPS Receiver Application Module (GB-GRAM).

  • SAASM available in GB-GRAM and MRU receivers
  • Synchronizes to military signal P(Y) code SAASM GPS receiver and civil signal C/A-Code
  • Hot start capable via DAGR/PLGR connectors
  • A wide variety of input/output signals supported
    • IRIG timecode generation
    • Precision, low-phase, frequency
    • Precise timing
    • Timecode generation: IRIG, STANAG, HaveQuick
  • STL Option - add STL to GPS or GNSS input references to improve resilience, or use STL alone for indoor applications.
  • Network-centric design
  • Secure system with the latest network management tools
  • Robust web-based user interface
  • High-performance NTP server; PTP grandmaster option
  • Modular (configure-to-order) ruggedized shock and vibration tested chassis
  • Exceptional operating temperature range of -20°C to +65°C


Mission critical military applications will benefit from SecureSync SAASM’s extreme reliability, security, and flexibility. An important advantage of SecureSync SAASM is its ruggedized shock and vibration tested chassis, designed to meet MIL-STD-810F for environmental performance.

The base unit provides an extremely accurate 1PPS timing signal aligned to a 10 MHz frequency signal without any 10 MHz phase discontinuity. An assortment of internal oscillator options is available to fulfill a broad range of requirements for holdover and phase noise.



More Info
Spectracom GPS timing accessories include GPS antennas, surge protectors, grounding kits, amplfiers, splitters, software, time displays, and support package options.
pdf - 140 KB
Saturday, November 16, 2013
By: Spectracom
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Optional hardware modules for the SecureSync platform.
pdf - 491 KB
Tuesday, February 27, 2018
By: Spectracom
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BroadShield is an option that integrates over 75 GPS jamming and spoofing detection algorithms into the SecureSync Precision Time and Frequency Platform.

pdf - 14 MB
Friday, September 8, 2017
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A SecureSync configuration with a SAASM GPS receiver for the needs of the USA department of defense and related programs.
pdf - 163 KB
Wednesday, March 15, 2017
By: Spectracom
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An overview of the web-based graphical user interface for Spectracom's time server/master clock platform.
pdf - 123 KB
Wednesday, April 8, 2015
By: Spectracom

Technical Notes and Briefs

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This document is designed to help with the configuration Email Alerts to generate automatic emails when certain events occur on a SecureSync, NetClock, or VersaSync Time Server with 5.1.x software or higher.
pdf - 266 KB
Tuesday, November 15, 2016
By: Spectracom
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NTP (Network Time Protocol) and SNTP (Simple Network Time Protocol) are very similar TCP/IP protocols in that they use the same time packet from a Time Server message to compute accurate time. The procedure used by the Time Server to assemble and send out a time stamp is exactly the same whether NTP (i.e. full implementation NTP) is being used, or if SNTP is being used.
pdf - 103 KB
Tuesday, November 1, 2011
By: Spectracom
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Large-scale NTP deployments require consideration for the network’s time synchronization architecture. Network time deployments are usually driven by considerations for reliability, scalability, manageability and security. The capability of modern NTP servers, such as Spectracom SecureSync® and NetClock® time servers, is such that capacity does not impact the design of the synchronization architecture. 
pdf - 343 KB
Thursday, May 19, 2016
By: Spectracom
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This technical note provides a general description of the software routing scheme of a single Spectracom unit with multiple network ports and offers alternative timing hardware deployments if software isolation is insufficient.
pdf - 319 KB
Monday, December 22, 2014
By: Spectracom
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STAndard NAto Agreement is a set of minimal specifications aiming at providing interoperability between military equipment deployed by NATO nations. In the area of communications, several STANAGs include specifications related to time and frequency to allow reliable operation of highly protected radio communication networks or links. As a leading provider of Time & Frequency systems for military forces, Spectracom offers high accuracy, high reliability, and flexible solutions to synchronize communication systems in compliance with the relevant STANAGs. This technical note provides a brief description of the main time and frequency related STANAGs as well as their implementation as an option board for the SecureSync Master Clock system.
pdf - 420 KB
Thursday, November 17, 2011
By: Spectracom
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When leveraging a single master clock / time server across several network segments there are various approaches to port isolation: software isolation, or hardware isolation via multiple processors, unidirectional communication of timing data, or electrical isolation by using fiber optics.
pdf - 64 KB
Tuesday, December 23, 2014
By: Spectracom
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Government and military networks often utilize the concept of unclassified (black) networks vs classified (red) networks to manage levels of information security. Since a complete “air-gap” around a highly sensitive network is not practical, every data connection is evaluated as a security risk. To synchronize a master source of time on a red network, Spectracom offers a fiber optical IRIG time code link between a SecureSync master-slave pair to offer high accuracy timing to a classified network while satisfying the requirements of SIPRNET, NIPRNET and other ultra-secure network systems.
pdf - 254 KB
Thursday, May 8, 2014
By: Spectracom

Compliance Documents, Technical Notes and Briefs

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This technical note documents the compatibility of SecureSync with the North American Electric Reliability Corporation’s (NERC) Critical Infrastructure Protection (CIP) “CIP-007 Standard Cyber Security – Systems Security Management” and describes the SecureSync configuration settings required to meet the CIP-007 requirement.
pdf - 142 KB
Tuesday, November 15, 2011
By: Spectracom

White Papers

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Typically, applications for timing use GPS as a precise, traceable, high availability, and free source of synchronization. But GPS is not the only satellite in the sky. More and more Global Navigation Satellite Systems (GNSS) are being developed and deployed. This white paper describes the trend to multi-GNSS using the example of the Russian GLONASS system as a complement to GPS.
pdf - 363 KB
Tuesday, November 19, 2013
By: Spectracom
More Info
If you manage a time-sensitive network, you'll want to consider how a leap second event will effect your applications. We offer these tips to help you be prepared.
pdf - 356 KB
Friday, September 9, 2016
By: Spectracom

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