Safran SecureSync 2400 User manual

User Manual
Document Part No.: 2400-5000-0050
Revision: 5.2
Date: 22-August-2023
ELECTRONICS & DEFENSE
SecureSync
2400 MODEL

© 2023 Safran. All rights reserved.
Information furnished by Safran is believed to be accurate and reliable. However, no
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erwise under any patent or patent rights of Safran. Trademarks and registered
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SecureSync 2400 User Manual I

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II SecureSync 2400 User Manual

SecureSync 2400 User Manual • TABLE OF CONTENTS III
CHAPTER 1
Product Description 1
1.1 Getting Started 2
1.2 SecureSync Introduction 2
1.2.1 SecureSync's Inputs and Outputs 3
1.3 SecureSync Front Panel 3
1.3.1 Status LEDs 4
1.3.1.1 Blinking Intervals 5
1.3.1.2 LED Lighting Patterns 5
1.3.1.3 Legend, individual LEDs 5
1.3.2 Front Panel Keypad, and Display 6
1.3.2.1 Using the Keypad 7
1.3.2.2 Using the Front Panel Display 7
1.4 Unit Rear Panel 13
1.5 Option Cards 15
1.5.1 Option Cards Overview 17
1.5.2 Option Card Identification 20
1.5.2.1 Option Card Identification by ID/Part Number 20
1.5.3 Option Card Connectors 23
1.6 Specifications 24
1.6.1 Input Power 24
1.6.2 GNSS Receiver 25
1.6.3 10 MHz Output 25
1.6.3.1 10 MHz Output — Oscillator Phase Noise (dBc/Hz) 27
1.6.4 Multi I/O 27
1.6.5 DCLS Output 29
1.6.5.1 1PPS Output 29
1.6.6 10/100/1000 Ethernet Port (RJ45) 30
1.6.7 10/100/1000 Ethernet Port (SFP) 30
1.6.8 RS-232 Serial Port (Rear Panel) 31
1.6.9 USB Serial Port (Front Panel) 31
CONTENTS

1.6.10 Cables 31
1.6.11 Protocols Supported 32
1.6.12 Mechanical and Environmental Specifications 32
1.7 The SecureSync Web UI 34
1.7.1 The Web UI HOME Screen 34
1.7.2 The INTERFACES Menu 35
1.7.3 The Configuration MANAGEMENT Menu 36
1.7.4 The TOOLS Menu 37
1.8 Regulatory Compliance 37
CHAPTER 2
SETUP 41
2.1 Installation Overview 42
2.1.1 Main Installation Steps 42
2.2 Unpacking and Inventory 43
2.3 Required Tools and Parts 44
2.3.1 Required GNSS Antenna Components 44
2.4 SAFETY 45
2.5 Mounting the Unit 48
2.5.1 Rack Mounting (Ears) 49
2.6 Connecting the GNSS Input 50
2.7 Connecting Network Cables 51
2.8 Connecting Inputs and Outputs 52
2.9 Connecting Supply Power 52
2.9.1 Using AC Input Power 53
2.9.2 Using DC Input Power 53
2.9.3 Hot Swap Power Supply 56
2.9.3.1 Hot Swap Installation 57
2.9.3.2 Hot Swap Monitoring 57
2.10 Powering Up the Unit 61
2.11 Zero Configuration Setup 63
2.11.1 Using Zeroconf 64
2.12 Setting up an IP Address 64
2.12.1 Dynamic vs. Static IP Address 65
IV SecureSync 2400 User Manual • TABLE OF CONTENTS

2.12.2 Assigning a Static IP Address 66
2.12.2.1 Setting Up an IP Address via the Front Panel 66
2.12.2.2 Setting Up a Static IP Address via a DHCP Network 69
2.12.2.3 Setting Up an IP Address via the Serial Port 69
2.12.2.4 Setting up a Static IP Address via Ethernet Cable 70
2.12.3 Subnet Mask Values 71
2.13 Accessing the WebUI 71
2.14 Configure Network Settings 73
2.14.1 General Network Settings 75
2.14.2 Network Ports 76
2.14.3 Network Services 77
2.14.4 Static Routes 78
2.14.5 Access Rules 80
2.14.6 HTTPS 81
2.14.6.1 Accessing the HTTPS Setup Window 81
2.14.6.2 About HTTPS 83
2.14.6.3 HSTS Setup 83
2.14.6.4 Supported Certificate Formats 84
2.14.6.5 Creating an HTTPS Certificate Request 84
2.14.6.6 Adding HTTPS Subject Alternative Names 87
2.14.6.7 Requesting an HTTPS Certificate 89
2.14.6.8 Uploading an X.509 PEM Certificate Text 90
2.14.6.9 Uploading an HTTPS Certificate File 91
2.14.7 SSH 92
2.14.8 SNMP 100
2.14.8.1 SNMP V1/V2c 105
2.14.8.2 SNMP V3 106
2.14.8.3 SNMP Traps 108
2.14.9 VLAN Support 111
2.14.10 System Time Message 111
2.14.10.1 System Time Message Format 112
2.15 Configure NTP 113
2.15.1 Checklist NTP Configuration 114
2.15.2 The NTP Setup Screen 114
2.15.3 Dis-/Enabling NTP 117
2.15.4 Viewing NTP Clients 118
2.15.5 Restoring the Default NTP Configuration 118
SecureSync 2400 User Manual • TABLE OF CONTENTS V

2.15.6 NTP Output Timescale 119
2.15.7 NTP Reference Configuration 120
2.15.7.1 The NTP Stratum Model 121
2.15.7.2 Configuring "NTP Stratum 1" Operation 121
2.15.7.3 Configuring "NTP Stratum Synchronization" 122
2.15.8 NTP Servers and Peers 123
2.15.8.1 The NTP Servers and NTP Peers Panels 124
2.15.8.2 NTP Servers: Adding, Configuring, Removing 125
2.15.8.3 NTP Peers: Adding, Configuring, Removing 128
2.15.9 NTP Authentication 130
2.15.9.1 NTP: Symmetric Keys (MD5) 130
2.15.10 NTP Access Restrictions 133
2.15.11 Enabling/Disabling NTP Broadcasting 135
2.15.12 NTP over Anycast 136
2.15.12.1 Configuring NTP over Anycast (General Settings) 137
2.15.12.2 Configuring NTP over Anycast (OSPF IPv4) 138
2.15.12.3 Configuring NTP over Anycast (OSPF IPv6) 139
2.15.12.4 Configuring NTP over Anycast (BGP) 140
2.15.12.5 Configuring Anycast via NTP Expert Mode 141
2.15.12.6 Testing NTP over Anycast 144
2.15.13 NTP Orphan Mode 144
2.15.14 Host Disciplining 145
2.15.15 NTP Expert Mode 146
2.15.16 Safran Technical Support for NTP 149
2.16 Configuring PTP 149
2.16.1 The PTP Screen 150
2.16.1.1 The PTP Settings Panel 150
2.16.1.2 The PTP Statistics Panel 153
2.16.2 Enabling/Disabling PTP 154
2.16.3 General Configuration Notes 155
2.17 GPSD Setup 155
2.18 Configurable Connectors 157
2.18.1 BNC DCLS OUT 157
2.18.2 DB15 Multi I/O 157
2.18.3 Assigning Signals 160
2.18.4 Network Ports 161
2.19 Configuring Input References 161
VI SecureSync 2400 User Manual • TABLE OF CONTENTS

2.19.1 How to Configure an Input Reference 162
2.19.2 Configure a 1PPS Input 163
2.19.3 Configure an ASCIIInput 163
2.19.4 Configure a HaveQuick Input 166
2.19.5 Configuring an IRIGInput 167
2.20 Configuring Outputs 169
2.20.1 How to Configure an Output 169
2.20.2 Configuring a 1PPS Output 170
2.20.3 Configuring the 10 MHz Output 171
2.20.4 Configure an ASCII Output 172
2.20.5 Configuring a GPIOOutput 174
2.20.6 Configuring a HaveQuick Output 175
2.20.7 Configuring an IRIG Output 177
2.20.8 The Outputs Screen 180
2.20.9 The 1PPS and 10MHz Outputs 180
2.21 The Option Cards Screen 182
2.22 Signature Control 183
CHAPTER 3
Managing Time 185
3.1 The Time Management Screen 186
3.2 System Time 187
3.2.1 System Time 188
3.2.1.1 Configuring the System Time 188
3.2.1.2 Timescales 190
3.2.1.3 Manually Setting the Time 191
3.2.1.4 Using Battery Backed Time on Startup 193
3.2.2 Timescale Offset(s) 195
3.2.2.1 Configuring a Timescale Offset 195
3.2.3 Leap Seconds 196
3.2.3.1 Reasons for a Leap Second Correction 196
3.2.3.2 Leap Second Alert Notification 197
3.2.3.3 Leap Second Correction Sequence 198
3.2.3.4 Configuring a Leap Second 198
3.2.4 Local Clock(s), DST 199
SecureSync 2400 User Manual • TABLE OF CONTENTS VII

3.2.4.1 Adding a Local Clock 199
3.2.4.2 DST Examples 202
3.2.4.3 DST and UTC, GMT 203
3.3 Managing References 204
3.3.1 Input Reference Priorities 204
3.3.1.1 Configuring Input Reference Priorities 205
3.3.1.2 The "Local System" Reference 209
3.3.1.3 The "User/User" Reference 210
3.3.1.4 Reference Priorities: EXAMPLES 212
3.3.2 Reference Qualification and Validation 215
3.3.2.1 Reference Monitoring: Phase 215
3.3.2.2 BroadShield 216
3.3.3 The GNSS Reference 225
3.3.3.1 Reviewing the GNSS Reference Status 226
3.3.3.2 Determining Your GNSS Receiver Model 230
3.3.3.3 Selecting a GNSS Receiver Mode 231
3.3.3.4 Setting GNSS Receiver Dynamics 234
3.3.3.5 Performing a GNSS Receiver Survey 236
3.3.3.6 GNSS Receiver Offset 237
3.3.3.7 Resetting the GNSS Receiver 239
3.3.3.8 Deleting the GNSS Receiver Position 239
3.3.3.9 Manually Setting the GNSS Position 241
3.3.3.10 GNSS Constellations 243
3.4 Holdover Mode 246
3.5 Managing the Oscillator 250
3.5.1 Oscillator Types 251
3.5.2 Configuring the Oscillator 252
3.5.2.1 Time Figure of Merit (TFOM) 253
3.5.3 Monitoring the Oscillator 255
3.5.4 Oscillator Logs 257
CHAPTER 4
System Administration 259
4.1 Powering Up/Shutting Down 260
4.1.1 Powering Up the Unit 260
4.1.2 Shutting Down the Unit 260
4.1.3 Issuing the HALT Command Before Removing Power 261
VIII SecureSync 2400 User Manual • TABLE OF CONTENTS

4.1.4 Rebooting the System 262
4.2 Notifications 263
4.2.1 Configuring Notifications 264
4.2.2 Notification Event Types 266
4.2.2.1 Timing Tab: Events 266
4.2.2.2 GPS Tab: Events 267
4.2.2.3 System Tab: Events 267
4.2.3 Configuring GPS Notification Alarm Thresholds 267
4.2.4 Setting Up SNMP Notifications 269
4.2.5 Setting Up Email Notifications 269
4.3 Managing Users and Security 273
4.3.1 Managing User Accounts 273
4.3.1.1 Types of Accounts 273
4.3.1.2 About "user" Account Permissions 273
4.3.1.3 Rules for Usernames 275
4.3.1.4 Adding/Deleting/Changing User Accounts 275
4.3.2 Managing Passwords 278
4.3.2.1 Configuring Password Policies 278
4.3.2.2 The Administrator Password 279
4.3.2.3 Lost Password 280
4.3.3 Web UI Timeout 282
4.3.4 LDAP Authentication 283
4.3.5 RADIUS Authentication 290
4.3.5.1 Enabling/Disabling RADIUS 290
4.3.5.2 Adding/Removing a RADIUS Server 291
4.3.6 TACACS+ Authentication 294
4.3.6.1 Enabling/Disabling TACACS+ 294
4.3.6.2 Adding/Removing a TACACS+ Server 295
4.3.7 Web UI Security 296
4.3.8 HTTPS Security Levels 296
4.4 Miscellanous Typical Configuration Tasks 298
4.4.1 REST API Configuration 298
4.4.2 Configuring the Front Panel 298
4.4.2.1 To change the time display on the front panel: 298
4.4.2.2 To lock or unlock the front panel: 299
4.4.3 Creating a Login Banner 299
SecureSync 2400 User Manual • TABLE OF CONTENTS IX

4.4.4 Show Clock 300
4.4.5 Product Registration 301
4.4.6 Synchronizing Network PCs 301
4.5 Quality Management 302
4.5.1 System Monitoring 302
4.5.1.1 Status Monitoring via Front Panel 302
4.5.1.2 Status Monitoring via the Web UI 303
4.5.1.3 Status Monitoring of Input References 306
4.5.1.4 Reference Monitoring: Phase 308
4.5.1.5 Ethernet Monitoring 309
4.5.1.6 Outputs Status Monitoring 310
4.5.1.7 Monitoring the Oscillator 312
4.5.1.8 Monitoring the Status of Option Cards 315
4.5.1.9 NTP Status Monitoring 317
4.5.1.10 Temperature Management 323
4.5.2 Logs 327
4.5.2.1 Types of Logs 328
4.5.2.2 The Logs Screen 333
4.5.2.3 Displaying Individual Logs 334
4.5.2.4 Saving and Downloading Logs 334
4.5.2.5 Setting up a Remote Log Server 336
4.5.2.6 Clearing All Logs 337
4.6 Updates and Licenses 338
4.6.1 Software Updates 338
4.6.2 Applying a License File 339
4.7 Backing-up and Restoring Configuration Files 340
4.7.1 Accessing the System Configuration Screen 341
4.7.2 Saving the System Configuration Files 343
4.7.3 Uploading Configuration Files 343
4.7.4 Restoring the System Configuration 344
4.7.5 Restoring the Factory Defaults 345
4.7.6 Resetting the Unit to Factory Configuration 345
4.7.6.1 Resetting All Configurations to their Factory Defaults 345
4.7.7 Default and Recommended Configurations 347
4.7.8 Sanitizing the Unit 348
4.7.8.1 Sanitizing Process 348
4.7.8.2 Further Reading 349
XSecureSync 2400 User Manual • TABLE OF CONTENTS

APPENDIX
Appendix 351
5.1 Troubleshooting 352
5.1.1 Minor and Major Alarms 352
5.1.2 Troubleshooting: System Configuration 353
5.1.2.1 System Troubleshooting: Browser Support 353
5.1.3 Troubleshooting – Unable to Open Web UI 353
5.1.4 Troubleshooting via Web UI Status Page 354
5.1.5 Troubleshooting GNSS Reception 357
5.1.6 Troubleshooting – Outputs 357
5.1.7 Troubleshooting the Serial Port 358
5.1.8 Troubleshooting the Cooling Fan 359
5.1.9 Troubleshooting – Network PCs Cannot Sync 360
5.1.10 Troubleshooting Software Update 360
5.2 Option Cards 361
5.2.1 Accessing Option Cards Settings via the WebUI 361
5.2.1.1 Web UI Navigation: Option Cards 362
5.2.1.2 Viewing Input/Output Configuration Settings 363
5.2.1.3 Configuring Option Card Inputs/Outputs 364
5.2.1.4 Viewing an Input/Output Signal State 366
5.2.1.5 Verifying the Validity of an Input Signal 367
5.2.2 Option Card Field Installation Instructions 368
5.2.2.1 Field Installation: Introduction 368
5.2.2.2 Outline of the Installation Procedure 368
5.2.2.3 Safety 369
5.2.2.4 [1]: Unpacking 369
5.2.2.5 [2]: Saving Refererence Priority Configuration 370
5.2.2.6 [3]: Determining the Installation Procedure 371
5.2.2.7 [4]: Slot 1 & 2 Installation 374
5.2.2.8 [5]: Bottom Slot Installation 376
5.2.2.9 [6]: Top Slot Installation, Bottom Slot Empty 377
5.2.2.10 [7]: Top Slot Installation, Bottom Slot Occupied 379
5.2.2.11 [8]: Frequency Output Cards: Wiring 381
5.2.2.12 [9]: Alarm Relay Card, Cable Installation 382
5.2.2.13 [10]: NENA-Compliant Card, Cable Installation 383
5.2.2.14 [11]: Verifying HW Detection and SW Update 385
5.2.2.15 [12]: Restoring Reference Priority Configuration 386
SecureSync 2400 User Manual • TABLE OF CONTENTS XI

5.2.3 Time and Frequency Option Cards 386
5.2.3.1 1PPS Out [1204-18, -19, -21, -2B] 386
5.2.3.2 1PPS In/Out [1204-28, -2A] 391
5.2.3.3 1PPS In/Out, 10MHz In [1204-01, -03] 396
5.2.3.4 Frequency Out [1204-08, -1C, -26] 403
5.2.3.5 Programmable Frequency Out [1204-13, -2F, -30] 406
5.2.3.6 Programmable Square Wave Out [1204-17] 411
5.2.3.7 Simulcast (CTCSS/Data Clock) [1204-14] 415
5.2.4 Telecom Option Cards 424
5.2.4.1 T1/E1 Out [1204-09, -0A, -4C, -53] 424
5.2.5 Time Code Option Cards 432
5.2.5.1 IRIG Out [1204-15, -1E, -22] 432
5.2.5.2 IRIG In/Out [1204-05, -27] 438
5.2.5.3 STANAG Out [1204-11, -25] 454
5.2.5.4 STANAG In [1204-1D, -24] 462
5.2.5.5 HAVE QUICK Out [1204-10, -1B] 470
5.2.5.6 HAVE QUICK In/Out [1204-29] 476
5.2.5.7 ASCII Time Code In/Out [1204-02, -04] 483
5.2.6 Network Interface Option Cards 495
5.2.6.1 NTP and Networking [4A, 49] 495
5.2.6.2 PTP Grandmaster [1204-32] 499
5.2.7 Miscellaneous Option Cards 517
5.2.7.1 STL Option Module [1204-3E] 518
5.2.7.2 Alarm Relay Out [1204-0F] 527
5.2.7.3 NENA-Compliant Option Card [-1F] 532
5.2.7.4 Revertive Selector Card [1204-2E] 543
5.2.7.5 Event Broadcast [1204-23] 545
5.3 Command-Line Interface 554
5.3.1 Setting up a Terminal Emulator 554
5.3.2 CLICommands 555
5.4 Time Code Data Formats 560
5.4.1 NMEA GGA Message 561
5.4.2 NMEA RMC Message 562
5.4.3 NMEA ZDA Message 562
5.4.4 Spectracom Format 0 563
5.4.5 Spectracom Format 1 564
5.4.6 Spectracom Format 1S 566
5.4.7 Spectracom Format 2 567
XII SecureSync 2400 User Manual • TABLE OF CONTENTS

5.4.8 Spectracom Format 3 570
5.4.9 Spectracom Format 4 571
5.4.10 Spectracom Format 7 573
5.4.11 Spectracom Format 8 575
5.4.12 Spectracom Format 9 576
5.4.12.1 Format 9S 576
5.4.13 Spectracom Epsilon Formats 577
5.4.13.1 Spectracom Epsilon TOD1 577
5.4.13.2 Spectracom Epsilon TOD3 578
5.4.14 BBC Message Formats 578
5.4.14.1 Format BBC-01 578
5.4.14.2 Format BBC-02 579
5.4.14.3 Format BBC-03 PSTN 581
5.4.14.4 Format BBC-04 582
5.4.14.5 Format BBC-05 (NMEA RMC Message) 583
5.4.15 GSSIP Message Format 584
5.4.16 EndRun Formats 585
5.4.16.1 EndRun Time Format 585
5.4.16.2 EndRunX (Extended) Time Format 586
5.5 IRIG Standards and Specifications 587
5.5.1 About the IRIG Output Resolution 587
5.5.2 IRIG Carrier Frequencies 588
5.5.3 IRIG B Output 593
5.5.3.1 FAA IRIG B Code Description 596
5.5.4 IRIG E Output 600
5.5.5 IRIG Output Accuracy Specifications 604
5.6 Technical Support 605
5.6.1 Regional Contact 606
5.7 Return Shipments 606
5.8 List of Tables 606
5.9 List of Images 608
5.10 Document Revision History 611
INDEX
SecureSync 2400 User Manual • TABLE OF CONTENTS XIII

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XIV SecureSync 2400 User Manual • TABLE OF CONTENTS

CHAPTER 1•SecureSync 2400 User Manual 1
Product Description
The Chapter presents an overview of the SecureSync 2400 Time and Fre-
quency Synchronization System, its capabilities, main technical features and
specifications.
The following topics are included in this Chapter:
1.1 Getting Started 2
1.2 SecureSync Introduction 2
1.3 SecureSync Front Panel 3
1.4 Unit Rear Panel 13
1.5 Option Cards 15
1.6 Specifications 24
1.7 The SecureSync Web UI 34
1.8 Regulatory Compliance 37
CHAPTER 1

1.1 Getting Started
Welcome to the SecureSync User Reference Guide.
Where to start:
First-time users:"SecureSync Introduction" below.
Users with some knowledge of Time and Frequency Servers: "Installation
Overview" on page42.
If your unit is up and running and you want to change a setting:"Managing
Time" on page185, or "System Administration" on page259.
1.2 SecureSync Introduction
SecureSync 2400 Time and Frequency Synchronization System®is the latest-ver-
sion, security-hardened 1-rack unit network appliance designed to meet rigorous
network security standards and best practices. It ensures accurate timing
through multiple references, tamper-proof management, and extensive logging.
Robust network protocols are used to allow for easy but secure configuration.
Features can be enabled or disabled based on your network policies. Installation
is aided by DHCP (IPv4), AUTOCONF (IPv6), and a front-panel keypad and OLED
display.
The unit supports multi-constellation GNSS input (SAASM GPS receivers, sup-
porting L1/L2, available for authorized users and required for the US DoD are
available), IRIG input and other input references. The unit is powered by AC on an
IEC60320 connector. DC power as back-up to AC power, or as the primary input
power source, is also available, and power selections can involve either fixed or
Hot Swap configurations.
SecureSync combines Safran’s precision master clock technology and secure net-
work-centric approach with a compact modular hardware design to bring you a
2CHAPTER 1•SecureSync 2400 User Manual Rev. 5.2
1.1 Getting Started

powerful time and frequency reference system at the lowest cost of ownership.
Military and commercial applications alike will benefit from its extreme reliability,
security, and flexibility for synchronizing critical operations.
An important advantage of SecureSync is its unique rugged and flexible modular
chassis that can be configured for your specific needs. Built-in time and fre-
quency functions are extended with up to six input/output modules.
You can choose from a variety of configurable option cards, each with an assort-
ment of input/output timing signal types and quantity, including additional 1PPS,
10 MHz, timecode (IRIG, ASCII, HAVE QUICK), other frequencies (5MHz,
2.048MHz, 1.544MHz, 1MHz), Precision Timing Protocol (PTP) input/output,
multi-Gigabit Ethernet (10/100/1000Base-T), telecom T1/E1 data rates and multi-
network NTP, allowing SecureSync to be customized for your exact require-
ments.
A variety of internal oscillators is available, depending on your requirements for
holdover capability and phase noise.
Note: Some of the features described are not available on all
SecureSync variants.
1.2.1 SecureSync's Inputs and Outputs
SecureSync provides multiple outputs for use in networked devices and other
synchronized devices. A 10MHz frequency reference provides a precise, dis-
ciplined signal for control systems and transmitters. A 1-Pulse-Per-Second (1PPS)
output acts as a precise metronome, counting off seconds of System Time in the
selected timescale (such as UTC, TAI or GPS); this BNC connector can also be
configured to produce IRIG, HaveQuick, or GPO signals. A multi-I/O 15 pin con-
nector provides default IRIG, ATC, and HaveQuick Inputs, as well as IRIG, IRIGAM,
HaveQuick, and ATC Outputs. These options can all be configured to suit your
application (see "Configurable Connectors" on page157).
SecureSync's outputs are driven by its inputs – most notably, Global Navigation
Satellite System (GNSS), or IRIG signal generators and other available input ref-
erences. GNSS-equipped SecureSyncs can track up to 72 GNSS satellites sim-
ultaneously and synchronize to the satellite’s atomic clocks. This enables
SecureSync- equipped computer networks to synchronize anywhere on the
planet.
1.3 SecureSync Front Panel
The front panel of a SecureSync unit consists of:
1.3 SecureSync Front Panel
CHAPTER 1•SecureSync 2400 User Manual Rev. 5.2 3

an LED time display
seven illuminated status LED menu buttons
a front panel control keypad
an OLED information display menu
micro-B USB serial console
intake for temperature-controlled cooling fans
The OLED information display is configurable using the front panel controls. The
micro USB serial interface and the front panel controls provide a means to con-
figure the unit’s network settings and perform other functions without requiring
access to the Web UI.
SecureSync units with the SAASM GPS receiver option module installed also
have an encryption key fill connector and key zeroize pin switch on the left-hand
side of the front panel.
Figure 1-1: SecureSync front panel layout
1.3.1 Status LEDs
SecureSync's front panel status LEDs provide a real-time status overview: Seven
(7) LEDs indicate the unit's current operating state.
Figure 1-2: Front panel LEDs
4CHAPTER 1•SecureSync 2400 User Manual Rev. 5.2
1.3 SecureSync Front Panel