Call centers, hospitals, military bases, federal or municipal agencies, financial services and technology companies, and many other enterprises need precision timing to support network accuracy and efficiency.
Interoperability, network/physical security; and compliance with internal policies, regulatory standards and best practices require time synchronization. For over three decades, Spectracom has been a leader in providing Legally Traceable Time® solutions to meet the needs of the most vital time synchronization applications. The latest 9300 series NetClock® network time servers deliver worldwide, split-second timing to mission critical systems, providing the highest levels of security, ease of management, and reliability. 3 models and numerous options are available for specific applications.
| Time Server Comparison Chart |
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Time & Frequency Server |
Network Time Server |
Ethernet Time Server |
| Model |
9383 |
9389 |
9388 |
| Timing Reference |
GPS, IRIG-B, Modem, 1PPS, NTP, (optional SAASM GPS) |
Time code over RS-485, NTP |
| Internal Oscillator |
TCXO (optional OCXO, Rb) |
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| Standard Outputs |
NTP, time code (2x) RS-232 & (2x) RS-485, alarm/timer (3x) relay |
| Extra outputs |
IRIG, 1PPS, 10 MHz |
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| Front panel display |
2 |
2 optional |
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| Network management, server, security protocols |
DHCP, IPv4/IPv6 dual stack, SNMP, SSL, SSH, Syslog, RADIUS, LDAP |
Detailed Feature Chart
Common Features
- Outputs: NTP thru v4, serial time codes, alarms/timers; optional: IRIG, 10 MHz, 1PPS
- Inputs: GPS, NTP peering/stratum-2; optional: IRIG, 1PPS, modem
- IPv6/IPv4 dual stack protects against network obsolesence
- SNMP with host restriction
- High bandwidth NTP performance (over 4,000 requests per second)
- Supports centralized user authentication (LDAP, RADIUS)
- Supports centralized logging (Syslog)
- SAASM GPS Receiver option
New in NetClock 9300 Series
- SAASM encrypted GPS Receiver available -- required by US Department of Defense for military applications
- Ruggedized shock and vibration-tested chassis qualified to meet MIL-STD 810F
- IPSec option to authenticate and/or encrypt each IP packet
- UL/CE/RoHS Compliant
Models
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Model 9383 NetClock Time Server |
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- Stratum-1 GPS primary time source
- 10/100 Base-T LAN port
- Time codes via two RS-232 serial ports, two RS-485 data bus ports
- IRIG B/E AM/TTL
- 1 PPS and 10 MHz
- Optional Rubidium or OXCO oscillator back-up for GPS
- Optional modem as back-up or primary
- Meets NENA master clock standard
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Model 9389 NetClock Time Server |
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- Stratum-1 GPS primary time source
- 10/100 Base-T LAN port
- Time codes via RS-232 serial port and RS-485 data bus port
- Optional front panel displays
- Optional modem as back-up or primary
- Ideal for synchronizing computer networks
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Model 9388 Ethernet Time Server |
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- Stratum-1 time server via RS-485 from any NetClock
- Stratum-2 network appliance time server
- 10/100 Base-T LAN port
- Time codes via RS-232 serial port and RS-485 data bus port
- Ideal for synchronizing a separate LAN segment
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SAASM GPS Receiver Option
GPS is an indispensable tool for synchronizing military actions and other timing applications, thanks to the GPS system’s extremely accurate and wells-ynchronized atomic clocks. However, GPS transmissions are relatively low-power and vulnerable to jamming. They may also be spoofed, a hacking technique in which seemingly legitimate data is faked.
To counter these threats, the Joint Chiefs of Staff have chosen the Selective Availability Anti-Spoofing Module (SAASM) as the GPS security architecture. As of October 2006, all newly fielded Department of Defense (DoD) GPS systems must use SAASM-compliant Precise Positioning System (PPS) devices.
A secure GPS receiver is available for SAASM applications as is required under the 2003 Joint Chiefs of Staff Instruction: Master Positioning, Navigation, and Timing Plan (CJCSI 6130.01C: Enclosure E). Learn more about this DoD mandate by reading "Enclosure E" of the document.
(left) Key Fill Loader Interface and Zeroize Function for SAASM option