hopf 8029HEPTA-V2/GPS User manual

_____________________________________________________________
Technical Manual
GPS - NTP Time Server with LAN Interface
Model 8029HEPTA-V2/GPS
ENGLISH
Version: 08.00 - 27.08.2018
_____________________________________________________________
SET
IMAGE (8029)
FIRMWARE (8024)
Valid for
Version: 08.xx
Version: 08.xx
Version: 01.xx
Industriefunkuhren

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hopf Elektronik GmbH
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INPORTANT NOTES
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hopf Elektronik GmbH
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Version number (Firmware / Manual)
THE FIRST TWO DIGITS OF THE VERSION NUMBER OF THE TECHNICAL MANUAL AND
THE FIRST TWO DIGITS OF THE FIRMWARE VERSION MUST COMPLY WITH EACH OTHER.
THEY INDICATE THE FUNCTIONAL CORRELATION BETWEEN DEVICE AND TECHNICAL
MANUAL.
THE DIGITS AFTER THE POINT IN THE VERSION NUMBER INDICATE CORRECTIONS IN THE
FIRMWARE /MANUAL THAT ARE OF NO SIGNIFICANCE FOR THE FUNCTION.
Downloading Technical Manuals
All current manuals of our products are available free of charge via our homepage on the
Internet.
Homepage: http://www.hopf.com
E-mail: [email protected]om
Symbols and Characters
Operational Reliability
Disregard may cause damages to persons or material.
Functionality
Disregard may impact function of system/device.
Information
Notes and Information.

INPORTANT NOTES
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Safety regulations
The safety regulations and observance of the technical data serve to
ensure trouble-free operation of the device and protection of persons and
material. It is therefore of utmost importance to observe and compliance
with these regulations.
If these are not complied with, then no claims may be made under the
terms of the warranty. No liability will be assumed for any ensuing
damage.
Safety of the device
This device has been manufactured in accordance with the latest
technological standards and approved safety regulations
The device should only be put into operation by trained and qualified staff.
Care must be taken that all cable connections are laid and fixed in position
correctly. The device should only be operated with the voltage supply
indicated on the identification label.
The device should only be operated by qualified staff or employees who
have received specific instruction.
If a device must be opened for repair, this should only be carried out by
employees with appropriate qualifications or by hopf Elektronik GmbH.
Before a device is opened or a fuse is changed all power supplies must
be disconnected.
If there are reasons to believe that the operational safety can no longer
be guaranteed the device must be taken out of service and labelled
accordingly.
The safety may be impaired when the device does not operate properly
or if it is obviously damaged.
CE-Conformity
This device fulfils the requirements of the EU directive 2014/30/EU
"Electromagnetic Compatibility" and 2014/35/EU "Low Voltage Equipment".
Therefore the device bears the CE identification marking
(CE = Communautés Européennes = European communities)
The CE indicates to the controlling bodies that the product complies with the requirements of
the EU directive - especially with regard to protection of health and safety for the operator and
the user - and may be released for sale within the common markets.

TABLE OF CONTENTS
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hopf Elektronik GmbH
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Contents Page
1GPS - NTP Time Server 8029HEPTA/GPS ...................................................................9
2System Structure........................................................................................................12
2.1 19 inch Rack 1U/84HP (Slim Line) ..........................................................................13
2.2 Functional Overview of the Front Panel Elements ...................................................13
2.2.1 LCD-Display with Pushbutton ............................................................................................ 13
2.2.2 Status-LEDs –System (& Extension)................................................................................ 14
2.2.3 Reset-(Default) Button ....................................................................................................... 15
2.2.4 NTP Status LEDs (NTP/Stratum/Accuracy)....................................................................... 15
2.2.5 USB-Port (Host) ................................................................................................................. 15
2.2.6 LAN Interface ETH0........................................................................................................... 16
2.2.6.1 MAC-Address for ETH0.............................................................................................................. 16
2.2.7 Sync Status Optical Coupler.............................................................................................. 16
2.2.8 Sync Status LEDs.............................................................................................................. 17
2.2.9 GPS Antenna Input............................................................................................................ 17
2.2.10 Extension Modules 1 –6 (Option)...................................................................................... 17
3Function Principle.......................................................................................................18
3.1 Block Diagram.........................................................................................................18
3.2 Function 8029HEPTA (WebGUI: Device)................................................................19
3.3 Function 8024GPS (WebGUI: Sync Source) ...........................................................19
3.4 LCD-Display with Pushbutton..................................................................................19
3.5 System EXTENSION 1 - 6 (Option).........................................................................20
4System Behaviour.......................................................................................................21
4.1 Boot Phase..............................................................................................................21
4.2 NTP Adjustment Process (NTP/Stratum/Accuracy) .................................................21
4.3 Reset-(Default) Button.............................................................................................21
4.4 Firmware Update.....................................................................................................22
4.4.1 Firmware Update 8029HEPTA (WebGUI: Device)............................................................ 22
4.4.2 Firmware Update 8024GPS (WebGUI: Sync Source)....................................................... 23
4.5 Activation of Functions (Activation Key)...................................................................24
5Installation...................................................................................................................25
5.1 System 8029HEPTA/GPS in 1U Slim Line Housing.................................................25
5.1.1 Installation of the 19 Inch Rack.......................................................................................... 25
5.1.2 Earthing.............................................................................................................................. 25
5.1.3 AC Power Supply............................................................................................................... 25
5.1.3.1 Safety and Warning Instructions................................................................................................. 26
5.1.3.2 Power Supply Unit Specifications ............................................................................................... 26
5.1.3.3 Fusing......................................................................................................................................... 26
5.1.4 DC Power Supply (Option)................................................................................................. 27
5.1.4.1 Power Supply Unit Specifications ............................................................................................... 27
5.1.4.2 Fusing......................................................................................................................................... 27
5.1.4.3 Reverse Voltage Protection........................................................................................................ 27
5.2 Connection GPS Antenna System...........................................................................28

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5.3 Connection LAN Interface ETH0..............................................................................28
5.4 Connection Sync Status Optical Coupler.................................................................29
6Commissioning...........................................................................................................30
6.1 General Procedure..................................................................................................30
6.2 Switching the Operating Voltage on.........................................................................31
6.3 LCD-Display after Switch On / Reset (Boot Phase) .................................................31
6.4 Establish the Network Connection via Web Browser ...............................................32
6.5 Network Configuration for ETH0 via LAN through hmc ..........................................32
7LCD-Display with Pushbutton –Function.................................................................36
7.1 Pushbutton Function (Light / Scroll).........................................................................36
7.2 Standard Display Image..........................................................................................36
7.2.1 Standard Display Image without valid Time....................................................................... 36
7.2.2Standard Display Image with valid Time............................................................................ 37
7.2.3 Standard Display with Additional Information .................................................................... 38
7.3 GENERAL ERROR .................................................................................................38
7.4 LAN Parameter........................................................................................................38
7.5 Local Time Parameter.............................................................................................39
7.6 GPS Satellite Display ..............................................................................................40
7.7 Position ...................................................................................................................40
7.8 Receiver Status.......................................................................................................40
7.9 Sync Source ERROR..............................................................................................41
7.10 Announcements (Summertime / Leap Second) .......................................................41
7.11 System-Info.............................................................................................................42
8HTTP/HTTPS WebGUI –Web Browser Configuration Interface...............................43
8.1 Quick Configuration.................................................................................................43
8.1.1 Requirements..................................................................................................................... 43
8.1.2 Configuration Steps............................................................................................................ 43
8.2 General –Introduction.............................................................................................44
8.2.1 LOGIN and LOGOUT as User........................................................................................... 45
8.2.2 Navigation via the Web Interface....................................................................................... 46
8.2.3 Enter or Changing Data ..................................................................................................... 47
8.2.3.1 Changing of Data in 8029HEPTA (WebGUI: Device) ................................................................. 47
8.2.3.2 Changing of Data in 8024GPS (WebGUI: GPS Sync Source).................................................... 48
8.2.4 Plausibility Check during Input........................................................................................... 49
8.3 Description of the Tabs............................................................................................50
8.3.1 GENERAL Tab................................................................................................................... 50
8.3.2 NETWORK Tab.................................................................................................................. 52
8.3.2.1 Host/Name Service..................................................................................................................... 52
8.3.2.2 Network Interface ETH0.............................................................................................................. 54
8.3.2.3 Routing (Activation Key necessary)............................................................................................ 59
8.3.2.4 Routing File................................................................................................................................. 60
8.3.2.5 Management (Management-Protocols –HTTP, SNMP, SNMP-Traps, etc.)............................... 61

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8.3.2.6 Time (Time Protocols –NTP, DAYTIME etc.)............................................................................. 64
8.3.3 NTP Tab............................................................................................................................. 66
8.3.3.1 System Info................................................................................................................................. 66
8.3.3.2 Kernel Info .................................................................................................................................. 67
8.3.3.3 Peers .......................................................................................................................................... 67
8.3.3.4 Server Configuration................................................................................................................... 68
8.3.3.5 Extended NTP Configuration...................................................................................................... 71
8.3.3.6 Restart NTP................................................................................................................................ 73
8.3.3.7 Configuring the NTP Access Restrictions................................................................................... 74
8.3.3.8 Symmetric Key............................................................................................................................ 78
8.3.3.9 Autokey....................................................................................................................................... 79
8.3.4 ALARM Tab (Activation Key necessary)............................................................................ 81
8.3.4.1 Syslog Configuration................................................................................................................... 81
8.3.4.2 E-mail Configuration ................................................................................................................... 82
8.3.4.3 SNMP Configuration / TRAP Configuration ................................................................................ 83
8.3.4.4 Alarm Messages......................................................................................................................... 84
8.3.5 DEVICE Tab....................................................................................................................... 85
8.3.5.1 Device Information...................................................................................................................... 85
8.3.5.2 Hardware Information ................................................................................................................. 85
8.3.5.3 Restoring the Factory Defaults Settings ..................................................................................... 86
8.3.5.4 Restarting the Module (Reboot Device)...................................................................................... 87
8.3.5.5 Image Update for Module 8029HEPTA (WebGUI: Device)......................................................... 88
8.3.5.6 Upload von Anwender SSL-Server-Zertifikat (Upload Certificate) .............................................. 90
8.3.5.7 Customized Security Banner ...................................................................................................... 91
8.3.5.8 Product Activation....................................................................................................................... 92
8.3.5.9 Diagnostics Function .................................................................................................................. 93
8.3.5.10 Passwords (Master/Device)........................................................................................................ 93
8.3.5.11 Downloading Configuration Files / SNMP MIB............................................................................ 94
8.3.6 GPS SYNC SOURCE Tab................................................................................................. 95
8.3.6.1 Time and Status.......................................................................................................................... 95
8.3.6.2 Set Sync Source Time................................................................................................................ 96
8.3.6.3 Time Zone Offset........................................................................................................................ 97
8.3.6.4 Daylight Saving Time (DST) ....................................................................................................... 98
8.3.6.5 Reception Quality ....................................................................................................................... 99
8.3.6.6 Reception Mode........................................................................................................................ 100
8.3.6.7 Receiver Position...................................................................................................................... 100
8.3.6.8 SyncON / SyncOFF .................................................................................................................. 101
8.3.6.9 Module Info............................................................................................................................... 102
8.3.6.10 Module Reset............................................................................................................................ 103
8.3.6.11 Factory Default ......................................................................................................................... 103
8.3.6.12 H8 Firmware Update (Sync Source)......................................................................................... 104
8.3.6.13 Module Errors........................................................................................................................... 105
8.3.6.14 Sync Status OC........................................................................................................................ 107
9SSH and Telnet Basic Configuration.......................................................................108
10 Fault Analysis / Troubleshooting.............................................................................109
10.1 Error Patterns........................................................................................................109
10.1.1 Complete Failure.............................................................................................................. 109
10.1.2 No GPS Reception / No Synchronization ........................................................................ 109
10.1.3 No Daylight Saving Time / Summer Time Switchover..................................................... 111
10.2 Support by Company hopf ...................................................................................111
11 Maintenance..............................................................................................................112
11.1 General Guidelines for Cleaning............................................................................112
11.2 Cleaning the Housing............................................................................................112

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11.3 Cleaning the Display and Front Panel....................................................................112
12 Technical Data ..........................................................................................................113
12.1 General –8029HEPTA/GPS .................................................................................113
12.2 Module 8029HEPTA..............................................................................................115
12.3 Module 8024GPS..................................................................................................116
13 Factory Defaults of Time Server 8029HEPTA/GPS.................................................117
13.1 Factory Default Values of Module 8029HEPTA (Device).......................................117
13.1.1 Network............................................................................................................................ 117
13.1.2 NTP.................................................................................................................................. 118
13.1.3 ALARM............................................................................................................................. 119
13.1.4 DEVICE............................................................................................................................ 119
13.2 Factory Default Values of Module 8024GPS (Sync Source)..................................120
14 Glossary and Abbreviations ....................................................................................121
14.1 NTP-specific Terminology......................................................................................121
14.2 Tally Codes (NTP-specific)....................................................................................121
14.2.1 Time-Specific Expressions............................................................................................... 122
14.3 Abbreviations.........................................................................................................123
14.4 Definitions .............................................................................................................124
14.4.1 DHCP (Dynamic Host Configuration Protocol) ................................................................ 124
14.4.2 NTP (Network Time Protocol).......................................................................................... 124
14.4.3 SNMP (Simple Network Management Protocol).............................................................. 125
14.4.4 TCP/IP (Transmission Control Protocol / Internet Protocol) ............................................ 125
14.5 Accuracy & NTP Basic Principles..........................................................................125
15 List of RFCs...............................................................................................................127
16 List of Open Source Packages Used.......................................................................128

GPS -NTP TIME SERVER 8029HEPTA/GPS
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hopf Elektronik GmbH
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1 GPS - NTP Time Server 8029HEPTA/GPS
By GPS time synchronization and the worldwide used time protocol NTP (Network Time
Protocol) the Time Server 8029HEPTA/GPS turns into a highly accurate NTP Stratum 1 Time
Server. It is used for the synchronization of computers and industrial networks.
The Time Server supports the following synchronization protocols:
•NTP (incl. SNTP)
•Daytime
•Time
•SINEC H1 time datagram (Activation Key necessary)
Front Side
Rear Side
The Time Server 8029HEPTA/GPS is integrated into a 1U/84HP 19" rack and characterized
by its easy and simple operation. Some of these practice-oriented functionalities are e.g.:
•Complete parameterisation via protected WebGUI access
All required settings for operation can be executed via a password protected WebGUI
also giving an overview of the status of the Time Server 8029HEPTA/GPS.
•LCD-Display and Status-LEDs in the front panel
The LCD-Display and the Status-LEDs make rapidly and easily substantial information
for commissioning, on the operating status and for support matters available if a
problem occurs, even without WebGUI access.
•Monitoring of GPS antenna circuit
An error message is generated when there is a short circuit in the GPS antenna circuit
or an open antenna input.
•Automatic switch-over of summer/winter time (initial setting required)
After initial commissioning there is no user intervention for a correct summer/winter
time changeover for the following years required.
•Automatic handling of the leap second
Should a leap second be inserted in the UTC time, it is recognized by the Time Server
8029HEPTA/GPS via the GPS signal and the leap second is automatically inserted in
the time information.
•Customized extensions possible
The new designed housing concept allows customized system extensions for
additional signal outputs (processed ex-works) easily and fast.

GPS -NTP TIME SERVER 8029HEPTA/GPS
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A superior security is guaranteed via available coding procedures such as symmetric keys,
autokey and access restrictions and deactivation of non-used protocols.
Different Management and Monitoring Functions are available as options (e.g. SNMP,
SNMP-Traps, E-mail notification, Syslog-messages including MIB II and private Enterprise
MIB).
Currently the Time Server 8029HEPTA/GPS offers following unlockable functions:
•SINEC H1 time datagram
•Static Routing Table
•Alarming and management features
•IEEE 802.1Q Tagged VLAN
A few other basic functions of the Time Server 8029HEPTA/GPS:
•The Time Server 8029HEPTA/GPS operates as NTP Server with Stratum 1
•Easy operation via WebGUI
•LCD-Display (2x40) and Status LEDs on the front panel
•Sync status output via optical coupler
•High freewheel accuracy provided by GPS-supported regulation of the internal
quartz basis
•Completely maintenance-free system
•SyncOFF Timer (reception failure bypassing) for operation free of fault messages
even based on difficult reception conditions
•Redundant multiple validation of the synchronization signal for an error-free and leap
free signal evaluation
•Maintenance-free, buffered backup clock for at least three days
Software supplied:
• hmc Remote Software for the operating systems:
oMicrosoft® Windows® NT/2000/XP/VISTA/7 (32/64 Bit)
oMicrosoft® Windows® Server 2003/2008 (32/64 Bit)
oLinux® (32/64 Bit)
oOracle® Solaris SPARC/x86
oIBM AIX® (from Version 5.2)
oHP-UX 11i (RS232 support only for PA-RISC architecture)

GPS -NTP TIME SERVER 8029HEPTA/GPS
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Overview of the functions of the network Time Server 8029HEPTA/GPS:
Ethernet Interface
•Auto negotiate
•10 Mbps half-/full duplex
•100 Mbps half-/full duplex
Time Protocols
•NTPv4 Server
•NTP Broadcast Mode
•NTP Multicast Mode
•NTP Client for additional NTP Servers (redundancy)
•SNTP Server
•NTP Symmetric Key Encryption
•NTP Autokey Encryption
•NTP Access Restrictions
•PPS Time Source
•SINEC H1 time datagram (Activation Key necessary)
•RFC-867 DAYTIME Server
•RFC-868 TIME Server
Network Protocols
•HTTP/ HTTPS
•DHCP
•Telnet
•SSH
•SNMPv3, SNMP Traps (MIB II, Private Enterprise MIB) (Activation Key necessary)
•NTP (including SNTP)
•SINEC H1 time datagram (Activation Key necessary)
Configuration Channel
•HTTP/HTTPS WebGUI (browser-based)
•Telnet
•SSH
•External LAN configuration tool ( hmc –Network-Configuration-Assistant)
Additional Features
•E-mail notification (Activation Key necessary)
•Syslog messages to external syslog server (Activation Key necessary)
•Routing (Activation Key necessary)
•Update via TCP/IP
•Fail-safe
•Watchdog circuit
•System management
•Customized security banner

SYSTEM STRUCTURE
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2 System Structure
The system 8029HEPTA/GPS consists of the following:
•1/1 19" module rack 1U/84HP (Slim Line)
•System front panel with LCD-Display (2x40), pushbutton and status LEDs
System front view:
•Wide-ranging power supply unit from 100-240V AC / 20VA (47-63Hz)
Other input voltages available
•Voltage feed with power switch with connections in accordance with
IEC/EN60320/C14 including EMI line filter
•Connection for protection earth (PE) cables up to 16mm²
•Module 8029HEPTA
•Module 8024GPS
•Space for up to 6 additional output modules
System rear side:
The new designed housing concept allows customized system extensions for additional signal
outputs (processed ex-works) easily and fast.

SYSTEM STRUCTURE
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2.1 19 inch Rack 1U/84HP (Slim Line)
2.2 Functional Overview of the Front Panel Elements
This chapter describes the individual function elements of the front and rear panel.
2.2.1 LCD-Display with Pushbutton
The background illumination of the LCD-Display is activated or rather controlled by the
pushbutton Light/Scroll.
The 2x40 LCD-Display enables reading out the time and further essential information for the
commissioning, the operation status, and for support even without WebGUI access.
The operation and function of the pushbutton and the display are described in Chapter 7 LCD-
Display with Pushbutton –Function.

SYSTEM STRUCTURE
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2.2.2 Status-LEDs –System (& Extension)
The Status LEDs on the front panel indicate the current synchronization and operation status
of the System 8029HEPTA/GPS. Meanings of the LEDs are the following:
During the boot process, all LEDs are flashing in a test sequence. The boot
process lasts approx. 30 seconds.
System - Sync
Status LEDs
Green
Red
Sync-Status
Status Code
ON
Off
Sync (radio-synchronous) with quartz regulation
SYNC
Flashes
Off
Sync (radio-synchronous) - SyncOFF timer running
SYOF
ON
Flashes
Sync (radio-synchronous) - simulation mode
SYSI
Flashes
Flashes
Quarz - SyncON timer running
QUON
ON
ON
Quarz - time was set via synchronization source
QUEX
Flashes
ON
Quarz - time set manually or after reset
QUSE
Off
ON
No valid time
INVA
Off
Off
No operating voltage / faulty
---
System - NTP
Status LEDs
NTP-Status
Green
Red
NTP Service
STRATUM
ACCURACY
Off
On
Not Active
---
Low
Flashes 1Hz 50%
On
Active
16
Low
Flashes 1Hz 10%
Flashes 1Hz 50%
Active
2-15
Low
Flashes 1Hz 50%
Flashes 1Hz 50%
Active
2-15
Medium
On
Flashes 1Hz 50%
Active
2-15
High
Flashes 1Hz 10%
Off
Active
1
Low
Flashes 1Hz 50%
Off
Active
1
Medium
On
Off
Active
1
High
Flashes 2Hz 50%
Off
Module loading Operating System
Off
Flashes 4Hz 50%
Module CPU not ready for operation (ERROR)

SYSTEM STRUCTURE
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2.2.3 Reset-(Default) Button
The Reset-(Default) Button is accessible with a thin object through the
small drilling in the front panel next to the "Reset" inscription" (see
Chapter 4.3 Reset-(Default) Button).
2.2.4 NTP Status LEDs (NTP/Stratum/Accuracy)
NTP-LED (Green)
NTP service of the Time Server
8029HEPTA/GPS
On
Standard, running
Off
Not running
Stratum1-LED
(Green)
The NTP service of the Time Server
8029HEPTA/GPS works with:
On
Stratum 1
Flashes
Stratum 2-15
Off
Stratum 16 (no synchronization of NTP
Clients)
Accuracy-LED
(Green)
The NTP service of the Time Server
8029HEPTA/GPS works with accuracy of:
On
high
Flashes
medium
Off
low
2.2.5 USB-Port (Host)
On specific problems the USB connection can be used for a
system recovery after consulting the hopf Support.

SYSTEM STRUCTURE
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2.2.6 LAN Interface ETH0
10/100-LED (Green)
Description
Off
10 MBit Ethernet detected
On
100 MBit Ethernet detected
lnk/act-LED (Yellow)
Description
Off
No LAN connection to a network
On
LAN connection available
Flashes
Network activity at ETH0 (transmission
/ reception)
Pin No.
Assignment
1
Tx+
2
Tx–
3
Rx+
4
Not in use
5
Not in use
6
Rx–
7
Not in use
8
Not in use
2.2.6.1 MAC-Address for ETH0
Each LAN interface is clearly identifiable on the Ethernet via a unique MAC Address (hardware
address).
The MAC address given for the LAN interface ETH0 can be read in WebGUI of the appropriate
board or be evaluated via the hmc Network Configuration Assistant. The MAC address
is uniquely assigned for each LAN interface by the company hopf Elektronik GmbH.
The factory set MAC address for the Time Server 8029HEPTA/GPS can
also be read out via the LCD-Display.
hopf Elektronik GmbH MAC addresses begin with 00:03:C7:xx:xx:xx.
2.2.7 Sync Status Optical Coupler
Sync Status Optical Coupler
3-pole pluggable Connector
Pin
Signal
1
Collector
2
n.c.
3
Emitter

SYSTEM STRUCTURE
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2.2.8 Sync Status LEDs
Sync Status LEDs
LED
Meaning
RD
Status LED red
GN
Status LED green
The Status LEDs on the front panel signal the current (synchronization) status of the Sync
Source (here Module 8024GPS). The meanings of the LEDs are as follows:
LED RD
- Red
LED GN
- Green
Status
STATUS
Code
Off
ON
Sync (radio-synchronous) with quartz regulation
SYNC
Off
Flashes
Sync (radio-synchronous) - SyncOFF timer running
SYOF
Flashes
ON
Sync (radio-synchronous) - simulation mode
SYSI
Flashes
Flashes
Quarz - SyncON timer running
QUON
ON
ON
Quarz - time was set via synchronization source
QUEX
ON
Flashes
Quarz - time set manually or after reset
QUSE
ON
Off
No valid time
INVA
Off
Off
No operating voltage / faulty
---
3Hz
Off
General Module Error (PCID)
INVA
3Hz
Invert
3Hz
User settings missing
(Difference time / ST-WT Changeover)
INVA
2.2.9 GPS Antenna Input
GPS Antenna
BNC connector
GPS
Antenna input
The antenna input provides an internal monitoring for "short-circuit" and
"open input".
2.2.10 Extension Modules 1 –6 (Option)
All installed system extensions deviating from the standard system 8029HEPTA/GPS
including the pertinent Status LEDs are documented and described in a device-specific
supplementary instruction.

FUNCTION PRINCIPLE
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3 Function Principle
This chapter describes the function principle of the Time Server 8029HEPTA/GPS and the
internal relations between the different functional groups.
3.1 Block Diagram
•Firmware Update
A H8 firmware update of the Sync Source (here Module 8024GPS) is completely
controlled by Module 8029HEPTA.
The update file for Module 8024GPS is loaded into Module 8029HEPTA via LAN
through the WebGUI. Then Module 8029HEPTA performs the update of the Sync
Source (here Module 8024GPS) independently.

FUNCTION PRINCIPLE
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•Management
The entire control of the Sync Source (here Module 8024GPS) is done by Module
8029HEPTA. All data of the Sync Source, indicated via WebGUI, are demanded
cyclically by Module 8029HEPTA from the Sync Source (here Module 8024GPS) or if
necessary. These data are then prepared for the display in WebGUI. After activation
settings for the Sync Source are transferred to the Sync Source immediately.
•High Precision Time
The Sync Source provides a high-precision time information and the according
synchronization status to Module 8029HEPTA. This time and status information is
used for synchronization of the NTP service and if applicable other signal generations
running on 8029HEPTA.
3.2 Function 8029HEPTA (WebGUI: Device)
The Module 8029HEPTA is the "heart" of the Time Server 8029HEPTA/GPS. A complete
LINUX operating system is running on this Module providing all functions such as NTP,
WebGUI etc. The Module also controls the connected Sync Source (here Module 8024GPS).
Using the high-precise time information of Module 8024GPS the NTP service running on
Module 8029HEPTA is also adjusted with high-precision. Thus the Module 8029HEPTA is a
very precise NTP STRATUM 1 - Time Server.
3.3 Function 8024GPS (WebGUI: Sync Source)
The Module 8024GPS is in principle an independent Module with GPS receiver and its own
µProcessor. In synchronous status it provides a high-precise time information to the Module
8029HEPTA. The control of Module 8024GPS in this system is completely done via Module
8029HEPTA. Parameters required by Module 8024GPS or provided are entered into WebGUI
of Module 8029HEPTA or rather be output.
The Module 8024GPS has an own failsafe memory in which all required data for operation
after generation via WebGUI are stored.
As the data of the Sync Source for the WebGUI indication need to be received by the Module
8029HEPTA at first, it is no real-time indication in WebGUI.
3.4 LCD-Display with Pushbutton
System settings cannot be changed via the pushbutton nor the display. The display allows the
readout of important system and operation parameters directly at the device, even without
WebGUI access.
The data indicated in the display are applicable to updating-cycles such as the WebGUI. An
on-going process is indicated via the display.

FUNCTION PRINCIPLE
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3.5 System EXTENSION 1 - 6 (Option)
The system 8029HEPTA/GPS can be equipped with autonomous extension modules for
complex functions (e.g. NTP Time Server Module 8029NTS/M) but also with additional output
hardware for signals generated by the system 8029HEPTA/GPS itself and parameterized by
its WebGUI.
Autonomous extension modules that are only provided with the high-precise time information
for its own function/signal generation by the system have two Status LEDs in the front panel.
Those are assigned via the EXTENSION numbers. These LEDs indicate the according
operation status of the extension module.
System front view:
System rear side / plug-in side:
All installed system extensions deviating from the standard system 8029HEPTA/GPS
including the pertinent Status LEDs are documented and described in a device-specific
supplementary instruction.