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Spectracom 9289 Instruction Manual

Netclock/ntp network time provider
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NETCLOCK/NTP NETWORK
TIME PROVIDER MODEL 9289
INSTRUCTION MANUAL
95 Methodist Hill Drive
Rochester, NY 14623
Phone: US +1.585.321.5800
Fax: US +1.585.321.5219
www.spectracomcorp.com
Part Number 1151-5000-0050
Manual Rev. E
5 December 2007

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  • Page 1 NETCLOCK/NTP NETWORK TIME PROVIDER MODEL 9289 INSTRUCTION MANUAL 95 Methodist Hill Drive Rochester, NY 14623 Phone: US +1.585.321.5800 Fax: US +1.585.321.5219 www.spectracomcorp.com Part Number 1151-5000-0050 Manual Rev. E 5 December 2007...
  • Page 2 Copyright © 2007 Spectracom Corporation. The contents of this publication may not be reproduced in any form without the written permission of Spectracom Corporation. Printed in USA. Specifications subject to change or improvement without notice. Spectracom, NetClock, Ageless, TimeGuard, TimeBurst, TimeTap, LineTap, MultiTap, VersaTap, and Legally Traceable Time are Spectracom registered trademarks.
  • Page 3 Spectracom’s judgment the defective condition in a Spectracom Spectracom be liable for any direct, indirect, special or product is for a cause listed above for which Spectracom is not consequential damages whether the claims are grounded in responsible, Spectracom will make the repairs or replacement of contract, tort (including negligence), or strict liability.
  • Page 4 This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to...

  • Page 5: Table Of Contents

    Spectracom Corporation Model 9289 Table of Contents GENERAL INFORMATION ..................1-1 Introduction ..............................1-1 Warranty Information and Customer Support ....................1-2 Inspection ..............................1-3 1.3.1 Inventory ..............................1-3 Specifications............................... 1-4 1.4.1 Receiver............................... 1-4 1.4.2 RS-232 Serial Setup Interface Port......................1-4 1.4.3 10/100 Ethernet Port............................
  • Page 6 Model 9289 Spectracom Corporation 3.3.3 Issuing the HALT Command through SNMP ..................... 3-17 Product Configuration using the WEB UI....................3-20 3.4.1 Configuring NTP ............................3-20 3.4.2 NTP Support .............................. 3-28 3.4.3 Configuring the Interface ........................... 3-29 3.4.4 Sysplex Timing ............................3-34 3.4.5...
  • Page 7 Figure 3-6: Connecting to the Computer’s Serial Port....................3-6 Figure 3-7: Configuring the Serial Port Connection Properties ................. 3-6 Figure 3-8: Spectracom NetClock Command Line Interface (CLI)................3-7 Figure 3-9: Available CLI Commands ........................3-8 Figure 3-10: Serial Port Pin Configuration ........................ 3-9 Figure 3-11: Net Commands...........................
  • Page 8 Figure 3-29: Configuring Serial Port 1 for Sysplex Timing ..................3-35 Figure 3-30: System Menu............................3-36 Figure 3-31: System SNMP Screen ........................3-37 Figure 3-32: Spectracom’s MIB..........................3-38 Figure 3-33: System Alarm Screen ......................... 3-39 Figure 3-34: System GPS Screen........................... 3-41 Figure 3-35: System Time Screen ..........................
  • Page 9 Spectracom Corporation Model 9289 Figure 3-63: SNMP Security Screen (2 of 3)......................3-83 Figure 3-64: SNMP Security Screen (3 of 3)......................3-84 Figure 3-65: Security LDAP General Screen ......................3-85 Figure 3-66: Security LDAP Client Configuration Screen (1 of 2) ................3-86 Figure 3-67: Security LDAP Client Configuration Screen (2 of 2) ................
  • Page 10 Model 9289 Spectracom Corporation Underwriters Laboratory (UL) has not tested the performance or reliability of the Global Positioning System (GPS) hardware, operating software, or other aspects of this product. UL has only tested for fire, shock, or casualties as outlined in UL’s Standard(s) for Safety for Information Technology Equipment, UL60950-1.

  • Page 11: General Information

    (including system logs) to the millisecond over LANs or WANs – anywhere on the planet. The 9289 uses the Linux v2.6 operating system and a high-speed processor. A variety of time code outputs are included to meet the requirements of numerous systems, including a 10/100 Base-T LAN port, up to two RS-232 serial ports, and up to two RS-485 data bus ports.

  • Page 12: Warranty Information And Customer Support

    Product support is also available by e-mail. Questions regarding equipment, operation, and applications may be e-mailed to Spectracom Sales Support at: sales@spectracomcorp.com For repairs and technical support, questions may be e-mailed to Spectracom Technicians at: techsupport@spectracomcorp.com Visit Spectracom’s web page for product information, application notes, and upgrade notices as they become available: http://www.spectracomcorp.com/...

  • Page 13: Inspection

    In addition, notify Spectracom Corporation of shipping damage or shortages in order to obtain a replacement or repair services. NOTE: If equipment is returned to Spectracom, it must be shipped in its original packing material. Save all packaging material for this purpose.

  • Page 14: Specifications

    Model 9289 Spectracom Corporation 1.4 Specifications NOTE: The specifications listed herein are based on “standard” operation, with the unit synchronized to GPS and with the GPS receiver in position hold. 1.4.1 Receiver Received standard: L1 C/A Code transmitted at 1575.42 MHz.

  • Page 15: Communication Port

    Spectracom Corporation Model 9289 Security Features: Up to 32-character password, Telnet Disable, FTP Disable, Secure SNMP, SNMP Disable, HTTPS, HTTP Disable, SCP, SSH, SFTP. Authentication: LDAP v2 and v3, RADIUS, MD5 Passwords, NTP Autokey Protocol. Connector: RJ-45, Network IEEE 802.3.

  • Page 16: Front Panel Led Indicators

    Model 9289 Spectracom Corporation 1.4.8 Front Panel LED Indicators Power: Green, always on. Sync: Tri-color LED indicates the time data accuracy and equipment fault. LAN: Green: Good Link indicator. Yellow: Network activity. 1.4.9 Relay Outputs Three separate outputs provided for either Programmable Event Timer Output or Major/Minor Alarm indication.

  • Page 17: Mechanical And Environmental

    Spectracom Corporation Model 9289 1.4.12 Mechanical and Environmental Dimensions: EIA 19” rack mount W x 1.75” H [1U] x 11.00” D (483 mm W x 44 mm H x 305 mm D). Weight: 6 lbs. (27 kg). Temperature: 32° to 122°F (0° to 50°C) operating range.
  • Page 18 Model 9289 Spectracom Corporation NetClock/NTP Network Time Provider Instruction Manual...

  • Page 19: Installation

    Spectracom Corporation Model 9289 2 Installation 2.1 Summary This section provides an overview summary of the installation process. The installation of the NetClock consists of the following steps. Refer to the table of contents in this manual for specific section references detailing how these summarized steps are accomplished.
  • Page 20 Model 9289 Spectracom Corporation Connect the NetClock’s front panel Ethernet port to an available hub/switch on the network with a standard network cable. Connect the DC power input jack to a standard AC outlet with the supplied power supply. Verify the green Good Link lamp next to the Ethernet connector illuminates.
  • Page 21 Spectracom Corporation Model 9289 Data Output Port Available From Time Zone Automatic Additional Notes Offset for Local Daylight Saving Time Time Adjustment Capable Network Time Ethernet port on front panel NOT AVAILABLE NTP is always UTC. Must set Protocol (NTP)

  • Page 22: Required Tools And Cables

    Model 9289 Spectracom Corporation 2.2 Required Tools and Cables 1) Phillips screwdriver to install the unit’s rack-mount ears. 2) Screwdriver to mount the unit in a standard 19-inch rack. 3) Wire strippers for the RS-485 cabling. 4) Supplied jeweler’s type screwdriver for tightening the RS-485 wiring terminal block connectors (Located in the ancillary kit).

  • Page 23: Rack Mounting

    When using the Model 8225 GPS outdoor antenna, Spectracom recommends using LMR-400 low loss type cable for the GPS antenna cable. To simplify the installation process, Spectracom offers GPS cable assemblies terminated with Type N Male connectors. Standard lengths are 10, 25, 50, 100, 150 and 200 feet.

  • Page 24: Cable Lengths

    Model 9289 Spectracom Corporation 2.5.2 Cable Lengths The maximum recommended antenna cable length when installed without a preamplifier is 300 feet of LMR 400 or equivalent cable with a maximum attenuation (loss) of 16 dB (Figure 2-1). When selecting alternate antenna cable sources, the attenuation characteristics at the GPS frequency of 1575.42 MHz must be known.

  • Page 25: Model 8224 Gps Splitter

    2.5.4 Model 8226 Impulse Suppressor Spectracom recommends the use of an inline coaxial protector for all products with an outside antenna. Spectracom offers the Model 8226, Impulse Suppressor, to protect the receiver from damaging voltages occurring on the antenna coax. Voltages exceeding the impulse suppresser trip point are shunted to the system ground.

  • Page 26: Model 8227 Gps Inline Amplifier

    2.5.5 Model 8227 GPS Inline Amplifier An inline amplifier is required whenever GPS antenna cable lengths cause greater than 12 dB attenuation. Using Spectracom CAL7xxx coax, an amplifier is needed whenever antenna cable lengths exceed 200 feet. The Model 8227 GPS Inline Amplifier, shown in Figure 2-3, extends the maximum cable length to 600 feet.

  • Page 27: Ethernet Network Cabling

    Model 9289 Ethernet Network Cabling Spectracom NetClocks provide a 10/100 Ethernet port for full NTP functionality as well as full web browser user interface enabled configuration, monitoring and diagnostic support. The Ethernet port is provided on the front panel for easy connection to routers and hubs.

  • Page 28: Remote Port And Serial Comm Port Output Pin-Outs And Wiring

    Serial RS-232 Comm ports. 2.7.1 Serial Comm Ports The rear panel of the Model 9289 has one RS-232 SERIAL COMM port (two if Option 02 has been purchased) that are available to synchronize peripheral devices. These ports can provide RS-232 output data to synchronize external devices that can accept RS-232 Data Formats as an input.

  • Page 29: Remote Port

    Spectracom Corporation Model 9289 2.7.2 RS-485 Remote Port The NetClock has a remote connection labeled “RS-485 PORT 1” (an additional port labeled “RS-485 PORT 2” is present if Option 02 is purchased). These outputs provide a continuous once-per-second time data stream in the selected Data Format. Two input time Data Formats, five output time Data Format selections, and one position data stream in NMEA 0183 format are available.

  • Page 30: Remote Output Usage

    These characteristics make RS-485 ideal for distributing time data throughout a facility. The Remote Output can drive 32 devices over cable lengths up to 4000 feet. Spectracom manufactures wall clocks, Ethernet Time Servers, RS-485 to RS-232 converters, and radio link products that utilize the RS-485 data stream as an input.

  • Page 31: Guidelines And Cable Selection

    RS-485 applications; they have a braided copper shield, nominal impedance of 120 ohms, and a capacitance of 12 to 16 picofarads per foot. RS-485 cable may be purchased from Spectracom. Specify part number CW04xxx, where xxx equals the length in feet.

  • Page 32: Figure 2-8: One-Way Bus Installation

    Model 9289 Spectracom Corporation Terminate End Device NTP Time Server DISPLAY RS-232 9288 Time Server TimeView 230 8179T TimeTap RS-485 Terminal RS-485 Terminal Terminal In/Out Block In/Out Block Block RS-485 Time Data NetClock Twisted Pair Cable RS-485 Terminal RS-485 Terminal...

  • Page 33: Figure 2-10: Wire Strain Relief

    Spectracom Corporation Model 9289 NOTE: Most RS-485 connections found on Spectracom equipment are made using a removable terminal strip. A jaw that compresses the wires when tightened secures the wires. When using small diameter wire, 22-26 gauge, a strain relief can be fashioned by wrapping the stripped wire over the insulating jacket.

  • Page 34: Figure 2-12: Model 8179T Timetap Rs-485 Interface

    TERMINAL BLOCK Figure 2-12: Model 8179T TimeTap RS-485 Interface Spectracom Model 9288 is an Ethernet Time Server that supports NTP and SNTP time protocols. The Model 9288 accepts Format 0, Format 2, Format 7, or Format 8 (Formats 7 and 8 are not available on all time sources –...

  • Page 35: Termination

    Figure 2-9. In a split bus configuration, terminate the devices installed on each end of the bus. Some Spectracom products include a built-in termination switch to terminate the RS-485 bus when required or a resistor is supplied with the equipment if no termination switch is available.
  • Page 36 Model 9289 Spectracom Corporation 2-18 NetClock/NTP Network Time Provider Instruction Manual...

  • Page 37: Product Configuration

    Spectracom Corporation Model 9289 3 Product Configuration NOTE: Screens shown in this manual are for illustrative purposes. Actual screens may vary. Software common to multiple NetClock models may be used to generate these screens. As a result, labels in the screens displayed may refer to units other than your specific NetClock.

  • Page 38: Network Configuration With Dhcp

    Model 9289 Spectracom Corporation When configuring a NetClock without DHCP, or to configure a NetClock that has not been assigned an IP address, refer to Network Configuration, Section 3.2. 3.1 Network Configuration with DHCP Once connected to the DHCP server through the network, the NetClock is assigned an IP address.

  • Page 39: Figure 3-3: Security - Network Screen (1 Of 2)

    Spectracom Corporation Model 9289 When you enter the NetClock IP address in your browser (which will differ from the IP address shown in the examples in this manual), you will be prompted to log in (Figure 3-1). The default administrator account is set at the factory as admin. The password is admin123.

  • Page 40: Figure 3-4: Security - Network Screen (2 Of 2)

    Model 9289 Spectracom Corporation Refer to the Initial Network Configuration section to continue your product configuration. Figure 3-4: Security – Network Screen (2 of 2) NetClock/NTP Network Time Provider Instruction Manual...

  • Page 41: Initial Network Configuration

    Spectracom Corporation Model 9289 3.2 Initial Network Configuration NOTE: The IP address assignment in this configuration may be performed even if your network has a DHCP server. There may be times when you do not wish DHCP to assign the IP address for the NetClock.

  • Page 42: Figure 3-6: Connecting To The Computer's Serial Port

    Model 9289 Spectracom Corporation Figure 3-6: Connecting to the Computer’s Serial Port Configure the COM1 properties as shown in Figure 3-7. Bits per second should be 9600. Data bits should be 8. Parity should be none. Stop bits should be 1. Flow control should be none.

  • Page 43: Figure 3-8: Spectracom Netclock Command Line Interface (Cli)

    Spectracom Corporation Model 9289 Figure 3-8: Spectracom NetClock Command Line Interface (CLI) Log in as an administrator using the name admin and the password admin123. (Login names and passwords are case-sensitive.) A successful login will return the prompt admin@x.x.x.x, where x.x.x.x is the IP address of the NetClock.

  • Page 44: Figure 3-9: Available Cli Commands

    Model 9289 Spectracom Corporation Figure 3-9: Available CLI Commands Initial configuration settings can be modified subsequently through either the serial port or the Web UI. The values entered in the following fields are specific to your setup. Your network administrator may assign and provide some or all of the required information.

  • Page 45: Figure 3-10: Serial Port Pin Configuration

    Spectracom Corporation Model 9289 Figure 3-10: Serial Port Pin Configuration SIGNAL DESCRIPTION Receive Data (RS-232 output data to PC) Transmit Data (RS-232 input data from PC) Signal Common Data Set Ready Request to Send Clear to Send Table 3-1: Serial Setup Cable Pin-Outs...

  • Page 46: Initial Network Setup

    Model 9289 Spectracom Corporation 3.2.2 Initial Network Setup At the CLI, enter the command net config. Set the prompted values to complete initial network setup. In this manual, the convention <enter> is used to indicate pressing the enter key. Figure 3-11: Net Commands...

  • Page 47: Figure 3-13: Initial Configuration Using The Cli

    Spectracom Corporation Model 9289 During initial configuration, you will be prompted to enable or disable and enter, as necessary, various settings and addresses. The include the following: Hostname: This is the network hostname that identifies the NetClock. DNS Server: This is the IP address of the DNS server (if any).

  • Page 48: Figure 3-14: Successful Completion Of Network Configuration

    Model 9289 Spectracom Corporation Figure 3-14: Successful Completion of Network Configuration NOTE: All IPv4 addresses must be entered in “dotted quad” format. All IPv6 addresses must be entered in standard IPv6 address format. NOTE: Setting the gateway to Disabled will cause the values in the Gateway Address field to be ignored.

  • Page 49: Default And Recommended Configurations

    Web User Interface HTTP Enabled Disabled or Command Line Interface Enabled – Using customer-generated certificate and key or default Spectracom HTTPS Web User Interface self-signed certificate and common public/private key SSH/SCP/SFTP enabled with unit unique 1024 bit keys Disabled or SNMP...

  • Page 50: Issuing The Halt Command Before Removing Power

    Model 9289 Spectracom Corporation 3.3 Issuing the HALT Command before Removing Power Once power is applied to the NetClock, it should not be removed unless the HALT command is issued to the unit. This prevents corruption of the NetClock file system.

  • Page 51: Figure 3-16: System Reboot/Halt Screen (2 Of 3)

    Spectracom Corporation Model 9289 Figure 3-16: System Reboot/Halt Screen (2 of 3) Figure 3-17: System Reboot/Halt Screen (3 of 3) NetClock/NTP Network Time Provider Instruction Manual 3-15...

  • Page 52: Issuing The Halt Command Through The Cli

    Model 9289 Spectracom Corporation 3.3.2 Issuing the HALT Command through the CLI From the CLI (Figure 3-18), enter halt (Figure 3-19) Entering reboot will reboot the system (Figure 3-20). NOTE: Wait 60 seconds after entering the HALT command before removing power.

  • Page 53: Issuing The Halt Command Through Snmp

    Spectracom Corporation Model 9289 Figure 3-20: Rebooting the System from the CLI 3.3.3 Issuing the HALT Command through SNMP The Reboot MIB location options in the NetClock (Figure 3-21) are as follows: • HALT to shutdown (NOTE: Wait 60 seconds after shutting down before removing power) •...
  • Page 54 Spectracom Corporation To reboot or halt the NetClock through SNMP, Spectracom provides a REBOOT MIB option. This is found in the tfSsytemObjsInfo table in the Spectracom Time and Frequency MIB under Spectracom Products specProduct, specTimeFreqMIB, in the specTimeFreqObjs under tfSystemObjs, in the table tfSystemObjsInfo. The REBOOT option (Figure 3-22) provides the choices of NO or YES for Reboot, and Halt to initiate a shut-down request.
  • Page 55 Spectracom Corporation Model 9289 Figure 3-23: Halting the Unit through SNMP Figure 3-24: Successful Halt The Set Successful Table box (Figure 3-24) will display to indicate that the Halt request to shut down the NetClock has been accepted. Wait 60 seconds before removing power.

  • Page 56: Product Configuration Using The Web Ui

    Model 9289 Spectracom Corporation 3.4 Product Configuration using the WEB UI NOTE: Screens shown in this manual are for illustrative purposes. Actual screens may vary. With the NetClock connected to the network, you may configure it, change its operating settings, check its status, and generate reports from the Web UI as needed and desired.
  • Page 57 Spectracom Corporation Model 9289 Figure 3-26: Web UI NTP Menu Network Time Protocol (NTP) and Simple Network Time Protocol (SNTP) are client-server protocols for synchronizing time on IP networks. NTP provides greater accuracy and error checking than does SNTP. NTP and SNTP can be used to synchronize the time on any computer equipment compatible with the Network Time Protocol.
  • Page 58 NTP clients on the network. When an NTP request packet is received, the NTP server will send an NTP response time packet to the requesting client. Under typical conditions, the Spectracom NTP server can service up to 4,000 NTP requests per second without MD5 encryption enabled (and a somewhat lower rate with MD5 encryption enabled).
  • Page 59 Spectracom Corporation Model 9289 The grids on the NTP References screen allow the user to define, by IP address or hostname, the locations of other NTP servers to use as time references (instead of the configured NetClock’s GPS reference) and the locations of other NTP servers to use as peers. Peers are NTP servers at the same stratum level that are used as an additional check on the NetClock’s...
  • Page 60 Model 9289 Spectracom Corporation NOTE: Check only ONE server as the preferred reference. NOTE: You cannot use both a Trusted Symmetrical Key ID and Autokey. Autokey essentially automates the symmetrical key function and the two cannot be used together. If trusted keys have been defined (Figure 3-29), they will appear in the “Trusted Sym...
  • Page 61 Spectracom Corporation Model 9289 From the Symmetrical Keys screen (Figure 3-30), the user may define the trusted symmetrical keys that must be entered on both the NetClock and any network client with which the NetClock is to communicate. The maximum number of Key-ID/Key String pairs is 15. Only those keys for which the “Trusted”...
  • Page 62 Model 9289 Spectracom Corporation Using Autokey essentially automates the trusted symmetrical key feature. From the Autokey screen (Figure 3-31), the user can click to enable or disable Autokey, enter a passphrase (readable ASCII, no spaces), and check “Generate Certificate” to generate a certificate in the text window at the bottom of the screen.
  • Page 63 Spectracom Corporation Model 9289 NOTE: The Autokey feature can only be configured when NTP is disabled. If NTP is enabled, the fields in the Autokey screen cannot be accessed. To configure Autokey, disable NTP from the NTP General screen. The user may also choose to use a Groupkey, which adds another level of authentication when using Autokey certificates.

  • Page 64: Ntp Support

    3.4.2 NTP Support Spectracom cannot provide technical assistance for configuring and installing NTP on Unix- based applications. Please refer to www.ntp.org/ for NTP information and FAQs. Another good source for support is the Internet newsgroup at news://comp.protocols.time.ntp/.

  • Page 65: Configuring The Interface

    Spectracom Corporation Model 9289 Spectracom can provide support for the Windows NT, Windows 2000, and Windows XP time synchronization. Refer to the Spectracom Web page, www.spectracomcorp.com, for more information, or contact Spectracom Technical Support by phone at US +1.585.321.5800. 3.4.3 Configuring the Interface The Interface menu (Figure 3-34) groups the NetClock’s Interface configuration functions.
  • Page 66 Model 9289 Spectracom Corporation entered, the NetClock will broadcast through the port only when that character is received by the unit. Figure 3-35: Interface Serial Port 1 Screen The baud rate is the speed at which the port will output values. This speed must be selected from the dropdown box.
  • Page 67 Spectracom Corporation Model 9289 Figure 3-36: Interface Remote Port 1 Screen Clicking the link to create and edit local systems clocks will display the Local System Clock screen. Refer to the System configuration screens in this manual for information on setting and editing local system clocks.
  • Page 68 Model 9289 Spectracom Corporation Figure 3-37: Interface Front Panel Display Screen (Displays are Optional) The NetClock has two optional front panel displays that are independently programmable. The left display is LCD 1 and the right display is LCD 2. You may use the Web UI to change the display and time format and to select (or edit, or create) system clocks.
  • Page 69 Spectracom Corporation Model 9289 Because a window-mounted antenna will have difficulties maintaining at least four satellites continuously, the window-mount antenna, Model 8228, should not be used when disciplining of the 10 MHZ is desired. The antenna must be installed outdoors with a good view of the horizon.

  • Page 70: Sysplex Timing

    Model 9289 Spectracom Corporation From the Interface Set to Defaults screen (Figure 3-38), the user may click the “Restore to factory defaults” button to set the Interface values (and the Interface values ONLY) to the factory settings. 3.4.4 Sysplex Timing The NetClock may be used as an external time source (ETS) to synchronize an IBM Sysplex Timer.
  • Page 71 Spectracom Corporation Model 9289 Figure 3-39: Configuring Serial Port 1 for Sysplex Timing The Sysplex Timer must be configured to use Protocol 2 (NetClock/2) and connected to the NetClock Serial Comm 1 port via a 9-pin serial cable (not included). Older Sysplex Timers (9037-001) may connect to an ETS through the Sysplex Timer’s console port, while later model...

  • Page 72: Configuring The System: Snmp

    (which is activated at the factory), the modem menu links will not appear on the System screen. If you purchase the Modem option after receipt of your NetClock system, Spectracom will provide you with a product key for modem activation.
  • Page 73 Spectracom Corporation Model 9289 Figure 3-41: System SNMP Screen SNMP (Simple Network Management Protocol) is a set of standards for managing network devices, which includes a protocol, a database structure specification, and a set of data objects. The communication protocol involves one or more network management stations monitoring one or more network devices.
  • Page 74 To obtain the MIB file via FTP, using your FTP program, log in as an administrator and change the file transfer mode to “binary.” The Spectracom MIB files are located in the /MIBS directory and include global, time-frequency, and NTPv4 files. There is a Global (generic) MIB file and a NetClock-specific MIB file called “Time and Frequency.”...

  • Page 75: Configuring Alarms

    Spectracom Corporation Model 9289 3.4.6 Configuring Alarms An alarm is asserted when predefined error conditions exist AND the associated alarm has been enabled. Through the System Alarm screen (Figure 3-43), the user may define what conditions constitute Major and Minor alarm conditions. These are the only user-defined Netclock Alarms. Clicking the check box to the left of a particular user-defined alarm will enable that alarm condition.

  • Page 76: Configuring Gps

    Model 9289 Spectracom Corporation Software Fault: One or more software sub-systems have experienced a major run-time error. This is a Major alarm. Time Sync Alarm: The period of time allotted for operation without tracking sufficient qualified satellites has expired. The factory default period is 2 hours.
  • Page 77 Spectracom Corporation Model 9289 Figure 3-44: System GPS Screen NetClock/NTP Network Time Provider Instruction Manual 3-41...
  • Page 78 Model 9289 Spectracom Corporation The following formula is used to calculate the cable delay: D = (L * C) / V Where: Cable delay in nanoseconds Cable length in feet Constant derived from velocity of light: 1.016 Nominal velocity of propagation expressed as decimal, i.e. %66 = 0.66 Value is provided by cable manufacturer.

  • Page 79: Configuring System Time And Local Clocks

    Spectracom Corporation Model 9289 3.4.8 Configuring System Time and Local Clocks The System Time screen (Figure 3-45) allows the user to set the system time manually for test purposes or if there is no external time reference available. Setting the system time when the NetClock is connected to an external time reference will result in the external reference (for example, GPS) overriding the manually set time.
  • Page 80 Model 9289 Spectracom Corporation Choosing Create/New from the Local System Clocks screen Figure 3-46) allows the user to define up to five local times (times other than UTC or GPS) to display using the NetClock. Figure 3-46: Local System Clock Screen (1 of 4) You can define up to five local clocks or time zones to be used with any of the remote ports, serial ports, event timers, or front panel displays.
  • Page 81 Spectracom Corporation Model 9289 Figure 3-47: Local System Clock Screen (2 of 4) NetClock/NTP Network Time Provider Instruction Manual 3-45...
  • Page 82 Model 9289 Spectracom Corporation Figure 3-48: Local System Clock Screen (3 of 4) Enter any name you wish for the Local Clock Name, up to 20 characters long. It can be any meaningful name that helps you know your point of reference (example: New York, Wall Clock in Bldg27, Eastern HQ, etc.)
  • Page 83 Spectracom Corporation Model 9289 Figure 3-49: Local System Clock Screen (4 of 4) TIME ZONE Under the TIME ZONE SETUP, you will see two choices: • Automatically configure to unit’s physical locality • Manually defined UTC offset Automatically Configure to Unit’s Physical Locality By selecting this option, the unit will compute the Time Zone Offset automatically based on the location of the unit provided by GPS receiver.
  • Page 84 Model 9289 Spectracom Corporation Once this option has been selected and submitted, the NetClock software will determine the values for the appropriate manual fields. These manual definitions will be displayed when the defined clock is edited. NOTE: Automatic time zone calculations are imprecise because the time zones are determined by local political boundaries that may change.
  • Page 85 Spectracom Corporation Model 9289 Select USA (thru 2006) if your location complies with the USA DST Rule and it is not yet the year 2007. The USA DST Rule changes in 2007. NOTE: If you set your DST rule in 2006, you must change it manually on January 1, 2007.
  • Page 86 Model 9289 Spectracom Corporation Review the changes made and click Submit. The browser will display the status of the change. Browse to the “Interface Setup, Remote Port” page and Select the proper System Clock. Example 3: To change a Local System Clock to be in DST at 1:01am on October 2nd and out of DST at 2:00am on April 17th, with a DST change of 30 minutes: Select the desired Clock Name.

  • Page 87: Setting The System Mode

    Spectracom Corporation Model 9289 3.4.9 Setting the System Mode The user may set the system mode from the Set System Mode screen (Figure 3-50). The system supports two modes of operation. These are single satellite mode and standard mode. Use single satellite mode if you are using a window mount antenna and cannot receive at least four satellites.

  • Page 88: Activating System Options And Rolling Back Updates

    To activate system modem or security options, click the “Activate Option” box, choose the option you wish to activate, and enter the activation key provided by Spectracom before clicking “Submit.” To return the NetClock to its previous setup configuration (“Configuration”) or software version (“Firmware”), click the appropriate selections and click “Submit.”...

  • Page 89: Rebooting The System

    Spectracom Corporation Model 9289 3.4.11 Rebooting the System The system can be rebooted from the System Reboot screen (Figure 3-52). Simply click the “Reboot Now” button and wait for the NetClock to reboot. Figure 3-52: System Reboot Screen 3.4.12 Configuring System Holdover The user may set the system holdover from the System Holdover screen (Figure 3-53).
  • Page 90 Model 9289 Spectracom Corporation Figure 3-53: System Holdover Screen The NetClock has a user configurable variable holdover period so that it can be adjusted for personal requirements and desires. A user can change the length of time that a unit waits in the holdover mode before loss of time sync.
  • Page 91 Spectracom Corporation Model 9289 Oscillator Option Estimated Error Rates Time to reach 2 ms TCXO Standard 1.0 milliseconds / hour (nominal) 2 hours (typical) TCXO Standard 7.2 milliseconds / hour (worst case) 17 minutes Table 3-3: Estimated TCXO Oscillator Error Rates NOTE: The TCXO Error rate is a worst-case estimate and not typically this value.

  • Page 92: Configuring System Logs

    Model 9289 Spectracom Corporation 3.4.13 Configuring System Logs From the System Log Configuration screen (Figure 3-54), the user may configure remote Syslog servers with which the NetClock will communicate. Facilities and severities are defined by the Syslog server and must be set up in the NetClock to match. The IP addresses and host names of the Syslog servers are entered on the bottom portion of the screen.

  • Page 93: Configuring And Testing Relays

    Spectracom Corporation Model 9289 NOTE: Any remote Syslog server that is entered to receive log messages must be properly configured to accept incoming Syslog messages. 3.4.14 Configuring and Testing Relays The Relay menu groups the NetClock’s relay functions (Figure 3-55). From this menu, the user may access screens configure, test, and reset the relay outputs and event timers.
  • Page 94 Model 9289 Spectracom Corporation relay operation, login as administrator mode and click on “test relays” in the left orange bar. Chose the desired relay to be tested and then press submit. The selected relay should activate each time the submit button is pushed.
  • Page 95 Spectracom Corporation Model 9289 Figure 3-57: Event Timer Relay Screen NetClock/NTP Network Time Provider Instruction Manual 3-59...
  • Page 96 Model 9289 Spectracom Corporation Figure 3-58: Edit/View Event Timers 3-60 NetClock/NTP Network Time Provider Instruction Manual...
  • Page 97 Spectracom Corporation Model 9289 Choose a Time Zone From the left menu, select “Set Event Clock.” Choose an already defined Clock (Time Zone) or define a new one Note: All times entered for the Event Timers will use the same Local System Clock reference for Time Zone and DST rules.
  • Page 98 Model 9289 Spectracom Corporation Figure 3-59: Relay Current Event Scheduler Screen 3-62 NetClock/NTP Network Time Provider Instruction Manual...
  • Page 99 Spectracom Corporation Model 9289 Figure 3-60: Relay Reset ALL Event Timers Screen From the Reset ALL Event Timers screen (Figure 3-60), the user may clear any set event timers. NetClock/NTP Network Time Provider Instruction Manual 3-63...
  • Page 100 Model 9289 Spectracom Corporation The Set Event Clock screen (Figure 3-61) allows the user to select the local system clock that drives the event function. The user may also access the create/edit local system clocks feature from this screen. Figure 3-61: Set Event Clock Screen...
  • Page 101 Spectracom Corporation Model 9289 Relay function can be tested from the Test Relays screen (Figure 3-62). Select one of the relays by clicking the radio button and test the selected relay by clicking Submit. If the relays are not connected to external devices, an audible clicking noise will emit from the NetClock.

  • Page 102: Configuring Network Security

    SNMP features, LDAP features, and RADIUS features. Spectracom 9300 series products use OpenSSH and OpenSSL. OpenSSH is the Open Source version of the Secure Shell; which provides a set of server side tools allowing secure remote telnet like access and secure file transfer using remote copy like (RCP) and FTP like utilities.
  • Page 103 Spectracom Corporation Model 9289 OpenSSL is the Open Source version of Secure Sockets Library; which is used to provide the encryption libraries. Together OpenSSH and OpenSSL provide industrial strength encryption allowing for secure remote administration via command line, HTTPS web pages and secure file transfers.
  • Page 104 Model 9289 Spectracom Corporation From the Security Network screen (Figure 3-64), the user may define the NetClock’s host name. The DNS servers are set automatically if using DHCP and manually if not using DHCP. The same is true of the IP configuration. Certain information that must be entered on this screen should be obtained from your network administrator if it is not automatically filled in.
  • Page 105 For more information on OpenSSH, refer to www.openSSH.org. SSH uses Host Keys to uniquely identify each SSH server. Host Keys are used for server authentication and identification. The secure Spectracom product permits users to create or delete RSA or DSA keys for the SSH2 protocol.
  • Page 106 Model 9289 Spectracom Corporation The user may choose to delete individual Host Keys. To delete a key simply select a radio button for the key you wish to delete and press submit at the bottom of the page. If the user chooses to delete the RSA or DSA key, the SSH will function, but that form of server authentication will not be available.
  • Page 107 Then select the submit button at the bottom of the screen. Spectracom secure products typically have their initial Host Keys created at the factory. The default key size for all key types is 1024. Host Key sizes can vary between 768 and 4096 bits.
  • Page 108 OpenSSH web site can be loaded onto a secure Spectracom product. The user transfers a new public key file using an insecure FTP client or a secure SCP or SFTP client using only account password authentication. The user should place the new public key’s file in the .ssh directory.
  • Page 109 “SCP” for these tools. The “SCP” user account has the same password as the admin account. It differs from the admin account in that it does not run the Spectracom product shell. It is a limited account that only allows the user to transfer files to and from the product file system folder and to retrieve files from folders which the SCP account has read permission.
  • Page 110 Spectracom Corporation 3.4.15.3 Recommended SSH Client Tools Spectracom does not make specific recommendations as to which specific SSH client, SCP client, or SFTP client tools. However, there are many SSH based tools available at cost or free to the user.
  • Page 111 Spectracom Corporation Model 9289 Figure 3-68: Security HTTPS Screen (1 of 2) NetClock/NTP Network Time Provider Instruction Manual 3-75...
  • Page 112 Spectracom Corporation Figure 3-69: Security HTTPS Screen (2 of 2) Each Spectracom secure product comes with a default Spectracom self-signed certificate, which will outlast the product warranty. The typical expiration of the certificate is about 10 years. HTTPS is available using this certificate until this certificate expires. If deleted however, this certificate cannot be restored.
  • Page 113 IP address, or URL used to reach the host via HTTPS. This field should be filled with the hostname or IP address of the NetClock. Spectracom recommends using a static IP address, because DHCP-generated IP addresses can change. If the hostname or IP address changes, the x509 certificate must be regenerated.

  • Page 114: If You Cannot Access A Secure Netclock

    Spectracom assumes that the customer is responsible for the physical security of the product. Spectracom secure products are required to be locked in a secure enclosure, cabinet or room. Unauthorized persons are not to be given access to the product nor should a serial cable and...

  • Page 115: Configuring User Accounts

    To restore access to your system you must utilize the setup port to restore the admin accounts default password. The admin account can then be used to enable HTTP using the “net HTTP” command. Contact Spectracom Technical Support for details on how to do this. 3.4.17 Configuring User Accounts...
  • Page 116 Model 9289 Spectracom Corporation From the Security User Account screen (Figure 3-70), the user may create and assign privileges to up to 16 local users. Click “Create/New” and “Submit” to create and assign privileges to users (Figure 3-71). 3-80 NetClock/NTP Network Time Provider Instruction Manual...
  • Page 117 Spectracom Corporation Model 9289 Figure 3-71: Security User Account Screen (Assigning Privileges) NetClock/NTP Network Time Provider Instruction Manual 3-81...

  • Page 118: Configuring Snmp V1, V2, And V3

    Model 9289 Spectracom Corporation Figure 3-72: SNMP Security Screen (1 of 3) 3.4.18 Configuring SNMP v1, v2, and v3 From the SNMP Security screen (Figure 3-72), the user can define the network locations, hostnames, and protocols used in communicating with SNMP v1, v2, and v3 users. (SNMP v3 is secure SNMP.)
  • Page 119 Spectracom Corporation Model 9289 Figure 3-73: SNMP Security Screen (2 of 3) NOTE: When selecting an engine ID for SNMPv3, pick an arbitrary hexadecimal number (such as 0x1234). NetClock/NTP Network Time Provider Instruction Manual 3-83...
  • Page 120 Model 9289 Spectracom Corporation Figure 3-74: SNMP Security Screen (3 of 3) 3-84 NetClock/NTP Network Time Provider Instruction Manual...
  • Page 121 Spectracom Corporation Model 9289 Figure 3-75: Security LDAP General Screen NetClock/NTP Network Time Provider Instruction Manual 3-85...

  • Page 122: Configuring Ldap And Radius

    Model 9289 Spectracom Corporation 3.4.19 Configuring LDAP and RADIUS From the Security LDAP General screen (Figure 3-75), the user chooses the LDAP server type (it must be the correct one – check with your LDAP server administrator if you are not sure) and choose the types of services allowed to request authentication from the LDAP server.
  • Page 123 Spectracom Corporation Model 9289 Figure 3-77: Security LDAP Client Configuration Screen (2 of 2) If “Enable SSL for simple authentication” is not clicked, clear text is sent to the LDAP server. If SSL is checked, text sent to the LDAP server is encrypted.
  • Page 124 Model 9289 Spectracom Corporation A sample configuration for Active Directory would be as follows: DN for search base dc=test,dc=spectracomcorp,dc=com Bind DN cn=administrator,cn=users,dc=test,dc=spectracomcorp,dc=com Bind password test Search filter objectclass=User Login attribute sAMAccountName DN for password ou=users,dc=test,dc=spectracomcorp,dc=com?one Group DN cn=engineer,cn=users,dc=test,dc=spectracomcorp,dc=com Group member attribute...
  • Page 125 Spectracom Corporation Model 9289 Figure 3-79: Security RADIUS Client Configuration Screen From the Security RADIUS Client Configuration screen (Figure 3-79), the user identifies the addresses of the network’s RADIUS servers. From this screen, the user also specifies the number of re-transmit attempts (0 to 3) that will be made in communicating with the RADIUS server.

  • Page 126: Configuring Ipsec

    Model 9289 Spectracom Corporation 3.4.20 Configuring IPSec Internet Protocol Security (IPSec) is a suite of IP protocols that authenticates and encrypts network communications. IPSec supports IPv6 and IPv4 as of this writing. IPSec defines a Security Association (SA), consisting of secured communications between two network devices.
  • Page 127 Model 9289 3.4.20.6 Configuring IPSec (IKE SA) To establish an IPSec connection between the Spectracom Netclock and an IPv4 addressed host (“A”) using IKE SA configuration, we must first configure the IPSec IKE to communicate with host A. To do this, navigate to the IPSEC IKE SA Configuration screen (Figure 3-80).
  • Page 128 Model 9289 Spectracom Corporation Figure 3-81: IPSEC IKE SA Configuration Screen (2 of 2) 3.4.20.6.1 IKE Phase 1 Configuration Exchange Mode defines the mode for Phase 1 (when the IKE daemon is the initiator). You may select all three options (meaning the NetClock supports Main, Aggressive, and Base exchange modes) or you may select one or two modes to support.
  • Page 129 Spectracom Corporation Model 9289 DH group defines the group used for Diffie-Hellman exponentiations. This directive must be defined using one of the following: Group 1 - Modp768 Group 2 - Modp1024 Group 5 - Modp1536 Grouip 14 - Modp2048 NOTE: When using Aggressive mode, the DH group defined for each proposal must be the same.
  • Page 130 Model 9289 Spectracom Corporation Alternatively, you may generate elsewhere and upload to the NetClock your key pair(s). Specify the directory and the name of the key pairs uploaded to it. Regardless of the method used, however, you must upload the peer’s public key to the NetClock and provide the directory and file name to the NetClock in the IPSec IKE SA Configuration screen.
  • Page 131 Spectracom Corporation Model 9289 Figure 3-82: IPSec General Screen Select ANY as the desired protocol to apply for IPSec security protection (unless a specific protocol is desired; these can be selected from the drop-down list). Select Both for the Direction, which means IPSec security protection is required for both incoming and outgoing packets.
  • Page 132 Model 9289 Spectracom Corporation You may choose to check either or both AH and ESP to set them as Require, Use, Default, or Unique. • Default means the kernel consults the system-wide default for the protocol specified. • Use means the kernel uses an SA if it is available, while the kernel keeps normal operation otherwise.
  • Page 133 Spectracom Corporation Model 9289 3.4.20.7 Configuring IPSec (Manual SA) To establish an IPSec connection between the NetClcok and an IPv6 addressed host (“B”) using manual SA configuration, refer to the IPSec Manual SA Configuration screen (Figure 3-83). 3.4.20.7.1 Manual Security Associations Input the NetClock IP address as the Source IP and host B’s IP address as the Destination IP.
  • Page 134 Model 9289 Spectracom Corporation The Security Parameter Index (SPI) must be a hexadecimal number without the “0x” prefix. Enter the desired values manually. NOTE: SPI values between 0 and 255 are reserved and cannot be used at this time. Make sure to check the AH or ESP boxes for the key configurations used. If the appropriate box is not checked, information following the AH or ESP inputs will be ignored by the update page.
  • Page 135 Spectracom Corporation Model 9289 3.4.20.7.2 Configure IPSec Security Policy Configure the IPSec security policy from the IPSec General screen (Figure 3-85). NOTE: The manual SA values must be configured BEFORE the manual SA option is enabled from the IPSec General screen (Figure 3-85). If the feature is enabled before it is configured from the IPSec Manual SA Configuration screen, the SA and SP tables will not update correctly.
  • Page 136 Model 9289 Spectracom Corporation Select ANY as the desired protocol to apply for IPSec security protection (unless a specific protocol is desired; these can be selected from the drop-down list). NOTE: When using IKE over IPv6, do NOT select ANY. There are protocols that do not work well with IKE under IPv6 with IKE.

  • Page 137: Logs And Status Reporting

    Spectracom Corporation Model 9289 3.4.21 Logs and Status Reporting Figure 3-86: Status and Log Menu The Status and Log menu groups the NetClock’s status and log access screens. From this menu the user can view system logs and monitor that status of the NetClock’s GPS signal. The user may also view system and NTP statuses from this menu.
  • Page 138 Model 9289 Spectracom Corporation Figure 3-87: Alarm Log Screen The Alarm Log (Figure 3-87) is a running list of the alarms (with descriptive information) experienced by the NetClock. 3-102 NetClock/NTP Network Time Provider Instruction Manual...
  • Page 139 Spectracom Corporation Model 9289 Figure 3-88: Authorization Log Screen The Authorization Log (Figure 3-88) is a running list of authenticated users who have accessed the NetClock. NetClock/NTP Network Time Provider Instruction Manual 3-103...
  • Page 140 Model 9289 Spectracom Corporation Figure 3-89: Event Log Screen The Event Log (Figure 3-89) is a running list of the event timer relay activity. 3-104 NetClock/NTP Network Time Provider Instruction Manual...
  • Page 141 Spectracom Corporation Model 9289 Figure 3-90: GPS Qualification Log Screen The GPS Qualification Log (Figure 3-90) is a running list of the NetClock’s GPS satellite signal activity. NetClock/NTP Network Time Provider Instruction Manual 3-105...
  • Page 142 Model 9289 Spectracom Corporation Figure 3-91: Journal Log Screen Whenever a user changes the NetClock’s configuration, the change (who performed it and what the change was) is recorded in the Journal Log (Figure 3-91). 3-106 NetClock/NTP Network Time Provider Instruction Manual...
  • Page 143 Spectracom Corporation Model 9289 Figure 3-92: NTP Log Screen The NTP Log (Figure 3-92) is a running list of NTP activity on the NetClock. NetClock/NTP Network Time Provider Instruction Manual 3-107...
  • Page 144 Model 9289 Spectracom Corporation Figure 3-93: IKE Log Screen The IKE Log (Figure 3-93) is useful for troubleshooting the status of the IPSec IKE SA configuration. 3-108 NetClock/NTP Network Time Provider Instruction Manual...
  • Page 145 Spectracom Corporation Model 9289 Figure 3-94: Operational Log Screen The Operational Log (Figure 3-94) is a running list of NetClock operations, such as system updates and clock synchronizations. NetClock/NTP Network Time Provider Instruction Manual 3-109...
  • Page 146 Model 9289 Spectracom Corporation Figure 3-95: System Log Screen The System Log (Figure 3-95) is a running list of system information and status messages that may be used by factory personnel for troubleshooting. This log records internal system information that is not intended for customer use.
  • Page 147 Model 9289 Figure 3-96: Update Log Screen The Update Log (Figure 3-96) is a running list of software updates performed on the NetClock. Software updates are performed using a utility program provided by Spectracom. NetClock/NTP Network Time Provider Instruction Manual 3-111...
  • Page 148 Model 9289 Spectracom Corporation Figure 3-97: GPS Signal Status Screen The GPS Signal Status screen (Figure 3-97) provides insight into the GPS receiver’s operation and the signal quality from the satellites. This information is useful to verify proper antenna placement and receiver performance during installation and later troubleshooting. The page describes the number of satellites being tracked and will indicate that the NetClock is “acquiring”...
  • Page 149 Spectracom Corporation Model 9289 determine its location. Some other terms you will encounter on the GPS Signal Status screen include: Antenna Sense = SSSSS SSSSS reports the status of the antenna sense circuit. There are three main flags (OK, Over Current, and Under Current).
  • Page 150 Model 9289 Spectracom Corporation STRENGTH = Signal strength value relative to the Signal to Noise Ratio [SNR]. Range: 0…255, the higher the number, the greater the receiver signal. NOTE: The NTP Status screen is discussed in the Configuring NTP section of this manual.
  • Page 151 Time Source – The time source field contains the current source for time input. The possible inputs are as follows: None – No Time Source has been found after startup. GPS – The GPS receiver is the Primary Time Source for the Models 9289 and 9189. NetClock/NTP Network Time Provider Instruction Manual 3-115...
  • Page 152 Modem – When Option 03 is installed, the Modem maybe used as a Primary Time Source or Secondary (backup) Time Source to GPS for the Model 9289. User – The Time Source is the result of the user setting the time from the System Setup/System Time web browser user interface page when no Time Source is present.
  • Page 153 The modem selection is very limited in compatibility. Not all available modems are compatible with the Model 9289 (Must be configured as Hayes AT) so we will supply you with a modem when the option is purchased. If the modem option was not initially purchased, contact our Sales department to purchase the modem option.
  • Page 154 Model 9289 Spectracom Corporation 3-118 NetClock/NTP Network Time Provider Instruction Manual...

  • Page 155: Operation

    Refer to Figure 4-1 for a picture of the front panel. The Spectracom NetClock has two main status LEDs present on the front panel. These status lights provide the user with the indication that power is applied to the unit (Power LED) and that the NetClock is currently synchronized or not synchronized (Sync LED).

  • Page 156: Rear Panel

    Model 9289 Spectracom Corporation LABEL COLOR ACTIVITY DESCRIPTION POWER Green Power supplied NetClock. Power is disconnected. SYNC Multi No fault but not synchronized to GPS. Holdover spec has not been met. Green On Synchronized to GPS. Time is valid and within the Locked to GPS accuracy specs.

  • Page 157: Figure 4-2: Netclock Rear Panel Detail (Standard)

    Spectracom Corporation Model 9289 The power jack is the input for the DC power. There are three configurable alarm/event relays (Relays 1, 2, 3) available for remote alerts and monitoring. The Serial Setup Interface provides network and output port configuration capability.

  • Page 158: Event And Alarm Relay Outputs

    Model 9289 Spectracom Corporation 4.2.1 Event and Alarm Relay Outputs The NetClock features three programmable relay outputs. The relays can be configured as major alarms, minor alarms, or events. They can control bells, whistles, sirens or other devices based on the event/alarm setup. Each event has an assigned start and stop time. An event can be scheduled for daily, monthly, or specific date occurrences.

  • Page 159: Leap Second Occurrence

    Spectracom Corporation Model 9289 4.3 Leap Second occurrence 4.3.1 Reasons for a Leap Second Correction A Leap Second is an intercalary, one-second adjustment that keeps broadcast standards for time of day close to mean solar time. Leap seconds are necessary to keep time standards synchronized with civil calendars, the basis of which is astronomical.

  • Page 160: Sequence Of A Leap Second Correction Being Applied

    Sequence of a Leap Second Correction Being Applied 1. The following is the time output sequence that the Model 9289 will utilize to apply the Leap second at UTC midnight (Not local time midnight. The Local time at which the adjustment is made will depend on which Time Zone you are located in).

  • Page 161: Serial Data Formats

    Spectracom Corporation Model 9289 5 Serial Data Formats This section describes each of the Data Format selections available on the RS-232 (Serial Comm) and RS-485 (Remote Port) outputs. Format selection is made as part of the Serial Comm and Remote port configuration. Most applications utilize either Data Format 0 or Data Format 2.

  • Page 162: Format 90

    Model 9289 Spectracom Corporation Date: Day 271 Time: 12:45:36 Pacific Daylight Time D = DST, Time Zone 08 = Pacific Time 5.2 Format 1 This format provides the fully decoded time data stream. Format 1 converts the received day of year data (001-366) to a date consisting of day of week, month, and day of the month.
  • Page 163 Spectracom Corporation Model 9289 NOTE: Data Format 1 has an available modification that may be made to the data stream structure. Most external systems utilizing Data Format 1 will look for a single digit day of the month for day 1 through day 9, with a space in front of each digit ( ^1, ^2, ^3 …...
  • Page 164 Model 9289 Spectracom Corporation YY = Year without century (99, 00, 01 etc.) space separator DDD = Day of Year (001 - 366) HH = Hours (00-23 UTC time) Colon separator MM = Minutes (00-59) SS = Seconds (00-60) Decimal Separator...
  • Page 165 Spectracom Corporation Model 9289 Example: ?A01 271 12:45:36.123 S The example data stream provides the following information: Sync Status: The clock has lost GPS time sync. The inaccuracy code of “A” indicates the expected time error is <10 milliseconds. Date: Day 271 of year 2001.
  • Page 166 Model 9289 Spectracom Corporation During periods of standard time for the selected DST schedule. During the 24-hour period preceding the change into DST. During periods of Daylight Saving Time for the selected DST schedule. During the 24-hour period preceding the change out of DST.
  • Page 167 Spectracom Corporation Model 9289 5.5 Format 4 Format 4 provides a format indicator, time synchronization status character, modified Julian date, time reflecting UTC with 0.1 millisecond resolution and a leap second indicator. Format 4 data structure is shown below: FFFFIMJDXX^HHMMSS.SSSS^L CR LF...
  • Page 168 Model 9289 Spectracom Corporation 5.6 Format 7 This format provides a time data stream with millisecond resolution. The Format 7 data stream consists of indicators for time synchronization status, leap second and Daylight Saving Time. Time data reflects UTC time and is in the 24-hour format. Format 7 data structure is shown...
  • Page 169 Spectracom Corporation Model 9289 Example: ? 01 271 12:45:36.123 S The example data stream provides the following information: Sync Status: The clock has lost GPS time sync. Date: Day 271 of year 2001. Time: 12:45:36 UTC time, Standard time is in effect.
  • Page 170 Model 9289 Spectracom Corporation 5.8 Format 90 Format 90 provides a position data stream in NMEA 0183 GPGGA GPS Fix data format. The Format 90 data structure is shown below: $GPGGA,HHMMSS.SS,ddmm.mmmm,n,dddmm.mmmm,e,Q,SS,YY.y,+AAAAA.a,M,,,,*CC CR where: $GP = System Talker GGA = GPS Fix Data Message HHMMSS.SS =...

  • Page 171: Serial Setup Interface Commands

    Spectracom Corporation Model 9289 6 Serial Setup Interface Commands The NetClock can be configured using the serial setup interface port and a terminal emulation program as discussed in Section 3.2. At the Command Line Interface (CLI), the user can manage files and configure product settings.

  • Page 172: Log

    Model 9289 Spectracom Corporation NOTE: Do not reboot the unit while file uploads are in progress. Do not reboot the unit with non-application images are located in /sys/bin/. If either of these conditions is not fulfilled, the unit may fail to boot the application image, which could result in a unit that function incorrectly or not at all.

  • Page 173: Ltc

    Spectracom Corporation Model 9289 6.5 ltc The ltc command is used to create up to five Local clocks. Local clocks allow many of the output ports to be able to provide time data as local time instead of just UTC time. This command requires admin level login.

  • Page 174: Mdo

    Model 9289 Spectracom Corporation 6.8 mdo The mdo command is used to configure the dial-out modem option if it is installed. The mdo command consists of a set of subcommands that are used to control logs and configurations of the modem features.

  • Page 175: Options

    TCXO Oscillator * STANDARD *Choose one oscillator only. Please contact Spectracom’s Sales department for information regarding any options you do not yet have that you may wish to purchase. Those options requiring additional explanation are detailed herein. NOTE: Option 02, which consists of the Front Panel Display, an additional remote port, and an additional serial port, is discussed in initial configuration and in Section 4, Operation.

  • Page 176: Modem Installation

    Model 9289 Spectracom Corporation 7.1.2 Modem Installation The cable needed to connect the modem to the NetClock is a DB9 male to DB9 male null modem serial cable. This should come with the modem package. 1. Connect one DB9 side of the null modem cable to the modem and the other DB9 side to the Serial Setup port located on the rear of the NetClock.

  • Page 177: Figure 7-1: System Modem Configuration Screen, Console Mode

    Spectracom Corporation Model 9289 Figure 7-1: System Modem Configuration Screen, Console Mode NetClock/NTP Network Time Provider Instruction Manual...

  • Page 178: Figure 7-2: System Modem Configuration Screen, Client Mode

    Model 9289 Spectracom Corporation Figure 7-2: System Modem Configuration Screen, Client Mode After selecting Client mode, submitting the change, and returning to the Modem Configuration screen, the user may configure the modem through the Web UI: Primary/Secondary Time Source: The modem can be configured as either the primary reference or a secondary/back-up reference.

  • Page 179: Acts Server Mode

    NIST ACTS service for time synchronization, such as the NetClock when configured in Client mode. For best accuracy, Spectracom recommends using a NetClock in Client mode in conjunction with a NetClock operating in ACTS Server mode.
  • Page 180 Model 9289 Spectracom Corporation Time Service Abbreviation: This field indicates the source from which a dial-out client is receiving Universal Coordinated Time (UTC). It is inserted in the ACTS timing message sent to the modem client. A time service abbreviation of SPEC will appear in the timing message as UTC (SPEC).

  • Page 181: Figure 7-4: Acts Server Greeting

    Spectracom Corporation Model 9289 Figure 7-4: ACTS Server Greeting The ACTS Server Statistics screen (Figure 7-5), accessible using the left-hand menu, provides all data for the current day and the previous day. For each day, it shows the number of attempted and completed calls during each hour of that day.

  • Page 182: Figure 7-5: Acts Server Statistics

    Model 9289 Spectracom Corporation Figure 7-5: ACTS Server Statistics The ACTS Server Log (Figure 7-6) helps the user monitor the behavior of the ACTS server daemon, including when it is started, when it is stopped, and how it is configured. The log records information about each time message it sends to the modem client.

  • Page 183: Modem Dial-Out Setup

    Spectracom Corporation Model 9289 Figure 7-6: ACTS Server Log 7.1.5 Modem Dial-Out Setup The modem dial-out feature is used as either a Secondary/Backup time reference when all other external time references become unavailable or can also be used as a primary reference if an...

  • Page 184: Modem Dialout

    Model 9289 Spectracom Corporation location). The System Modem Configuration screen (Figure 7-1) provides options to configure the operation of the dial-out modem feature from the left-hand menu. All fields will display the current system settings. 7.1.6 Modem Dialout The Modem Dialout screen (Figure 7-7) is used to annotate the phone number used to obtain the time from and to determine how often the modem will be used to retrieve the current time.

  • Page 185: Figure 7-7: System Modem Dial Out Screen (1 Of 2)

    Spectracom Corporation Model 9289 Figure 7-7: System Modem Dial Out Screen (1 of 2) To help prevent a loss of time synchronization condition from occurring, the call interval should be configured for a value of less than the holdover period. This will prevent the holdover period from expiring (which will cause loss of Time Sync) because the modem was configured to dial- out after the holdover expired.

  • Page 186: Figure 7-8: System Modem Dial Out Screen (2 Of 2)

    Model 9289 Spectracom Corporation Figure 7-8: System Modem Dial Out Screen (2 of 2) If the modem is the primary mode of operation for time synchronization, the boot dial-out value should be set for a very short duration as the unit will not be able to achieve time synchronization without the modem placing a call.

  • Page 187: Figure 7-9: System Modem Calibrate Screen

    Spectracom Corporation Model 9289 Figure 7-9: System Modem Calibrate Screen The calibrate mode allows the user to define the typical latency for the geographic location as well as the time of day the modem is most likely to be used for time synchronization (such as for primary mode of operation).

  • Page 188: Modem Testing

    Model 9289 Spectracom Corporation Calibrate Settings Calibrate Now: Calibrate now is based on the current settings. This will calculate the call latency and adjust all future calls based on this value. The call latency is based primarily on the phone system.

  • Page 189: Figure 7-10: Modem Test Screen

    Spectracom Corporation Model 9289 Figure 7-10: Modem Test Screen There are four different types of modem dial-out calls that can be made. The call type is determined by the state of the system (after the call is finished) as well as user input.

  • Page 190: Verify Modem Operation

    Model 9289 Spectracom Corporation call after the call is finished it is possible to start a call as a certain call type and actually use it as another call type. Here is a description of each of the four possible call types.

  • Page 191: Figure 7-11: Modem Dialout Log Screen

    Spectracom Corporation Model 9289 sync (Sync lamp turns red) or when the scheduled Time Verification call occurs, the modem automatically dials NIST again. If connection is made, holdover is restored (Sync lamp flashes green again). Verify proper operation of the modem by observing the status of the front panel sync lamp flashing green after connection to NIST and verifying the Model dial-out logs.
  • Page 192 Model 9289 Spectracom Corporation system clock. If calling a Spectracom ACTS server, additional information about each time message is logged, including the on-time character (what it is, when it is received) and the advance time included in the message. If the sync lamp is also flashing red, this is because the GPS antenna is disconnected from the NetClock.

  • Page 193: License Notices

    29. [32]David L. Mills <mills@udel.edu> Version 4 foundation: clock discipline, authentication, precision kernel; clock drivers: * incompatible with the protocol description in the RFC file, it Spectracom, Austron, Arbiter, Heath, ATOM, ACTS, KSI/Odetics; must be audio clock drivers: CHU, WWV/H, IRIG * called by a name other than "ssh"...
  • Page 194 Model 9289 Spectracom Corporation - IDEA is no longer included, its use is deprecated * Optimised ANSI C code for the Rijndael cipher (now AES) - DES is now external, in the OpenSSL library - GMP is no longer used, and instead we call BN code from OpenSSL * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>...
  • Page 195 Spectracom Corporation Model 9289 notice, this list of conditions and the following disclaimer. * the following conditions are aheared to. The following conditions * 2. Redistributions in binary form must reproduce the above * apply to all code found in this distribution, be it the RC4, RSA, copyright * lhash, DES, etc., code;...
  • Page 196 Model 9289 Spectracom Corporation PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR machine-readable copy of the corresponding source code, to be CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, distributed under the terms of Sections 1 and 2 above on a medium...
  • Page 197 REVISION HISTORY Revision Level Description Revision A was the first-generation manual for the 9200 series — products. Minor language edits. Replaced System Holdover screen. Rearranged Option 03: Modem section and corrected reference to — DB9-DB9 modem cable. Removed accuracy specification in Protocols Supported section.
  • Page 198 Spectracom Corporation 95 Methodist Hill Drive Rochester, NY 14623 www.spectracomcorp.com Phone: US +1.585.321.5800 Fax: US +1.585.321.5219...

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