hopf 8029HEPTA-V2/GPS Technical Manual Download Page 89

Page: 89 / 130

HTTP/HTTPS

GUI

–

ROWSER

ONFIGURATION

NTERFACE

8029HEPTA-V2/GPS GPS - NTP Time Server with LAN Interface - V08.00

89 / 130

hopf

Elektronik GmbH

Nottebohmstr. 41

• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]

8.3.5.5.1 Select Image Update

ATTENTION

Important note for the identification of the required image update!

In order to select the correct image update, the

digit marked red

of the

serial number must be checked!

Required ZIP archive for the Image Update:

Red marked digit

= 1

Red marked digit

= 4

hopf8029HEPTA-V2-

SERI

_GPS_SET_v07xx.zip

hopf8029HEPTA-V2-

NAND

_GPS_SET_v07xx.zip

Content of the ZIP archive

•

8024A_128_v01xx.mot

•

8029HEPTA-V2_128_v05xx.mot

•

readme_8029HEPTA-V2-SERI_GPS.txt

•

release-notes_8029HEPTA-V2-SERI_GPS.html

•

upgrade_8029-

SERI

_gen_rel_v07xx.img

Content of the ZIP archive

•

8024A_128_v01xx.mot

•

8029HEPTA-V2_128_v05xx.mot

•

readme_8029HEPTA-V2-NAND_GPS.txt

•

release-notes_8029HEPTA-V2-NAND_GPS.html

•

upgrade_8029-

NAND

_gen_rel_v07xx.img

Summary of Contents for 8029HEPTA-V2/GPS

Page 1: ...ical 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 ...

Page 2: ...A V2 GPS GPS NTP Time Server with LAN Interface V08 00 2 130 hopf Elektronik GmbH Nottebohmstr 41 D 58511 Lüdenscheid Tel 49 0 2351 9386 86 Fax 49 0 2351 9386 93 Internet http www hopf com E Mail info hopf com ...

Page 3: ...TH 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 info hopf...

Page 4: ...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 disconn...

Page 5: ...ion Modules 1 6 Option 17 3 Function 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 4 System 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 We...

Page 6: ...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 8 HTTP HTTPS WebGUI Web Browser Configuration Interface 43 8 1 Quick Configuration 43 8 1 1 Requirements 43 8 1 2 Conf...

Page 7: ... 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 Tim...

Page 8: ...t 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 Protoco...

Page 9: ...d 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 Mo...

Page 10: ...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 ...

Page 11: ...ic 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 bro...

Page 12: ...t 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 16mm Module 8029HEPTA Module 8024GPS Space for up to 6 additional output mod...

Page 13: ...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 ...

Page 14: ...s 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 Stat...

Page 15: ...ption 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 802...

Page 16: ... 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 interf...

Page 17: ...ynchronous 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 Differenc...

Page 18: ...hapter 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 perfo...

Page 19: ...le 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 µ...

Page 20: ...rdware 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 ...

Page 21: ...prox 30 seconds 4 2 NTP Adjustment Process NTP Stratum Accuracy NTP is a regulation process After start of the NTP services automatically processed during booting the Time Server 8029HEPTA GPS requires approximately 5 10 minutes after synchronization of the Sync Source Status SYNC until NTP is set to the high accuracy of the Sync Source here Module 8024GPS and reaches the optimized operation condi...

Page 22: ...of a SET needed to be uploaded to ensure a defined operation condition The program releases assigned to a SET version may be taken from the release notes of the software SETs of the Time Sever 8029HEPTA GPS 4 4 1 Firmware Update 8029HEPTA WebGUI Device The general process of a software update of Module 8029HEPTA is described below For selection of the correct update set the identifier 8029HEPTA V2...

Page 23: ...ith the file extension mot for Module 8029 via the selection window 4 The selected file is shown in the selection window 5 The update process is started with the button Upload now 6 In WebGUI the successful file transfer to the Module is indicated 7 Now the update of the board automatically starts after a few seconds 8 After successful update the board automatically reboots 9 After approx 2 minute...

Page 24: ...etwork interfaces can be configured with additional VLANs Virtual Bridged Local Area Networks according to IEEE 802 1q Static Routing Table This function is suitable for configuring static routes based on special network configuration requirements Alarming and management features This function enables to use SNMP SNMPv2c SNMPv3 Syslog and Email notification to monitor the system status Together wi...

Page 25: ...ise to an excessive equipment operating temperature Ensure that there is sufficient space between the back of the rack and the control panel to allow connection and data lines with the system 5 1 2 Earthing The Time Server 8029HEPTA GPS is usually earthed via the PE cable of the power supply An additional earth cable for surge protection purposes can be connected by means of the earth screw locate...

Page 26: ...ower supply has been connected correctly and electrical shock protection is in place The earth wire is connected All supply cables are correctly sized and fused All output cables are suitably sized or specially fused for the max output current of the equipment Sufficient convection is guaranteed The equipment contains life threatening components and a high level of stored energy 5 1 3 2 Power Supp...

Page 27: ...nit Specifications All DC power supply specifications are described in Chapter 12 Technical Data 5 1 4 2 Fusing Pay attention to the correct fusing of the power supply when connecting the Time Server 8029HEPTA GPS The corresponding performance data can be taken from the equipment nameplate The Time Server 8029HEPTA GPS is currently fitted with a power supply unit with a power consumption of max 20...

Page 28: ...descriptions referring to the installation of the antenna system for example cable lengths and cable types are described in the document Antenna System GPS GPS Antenna BNC connector GPS Antenna input There is an antenna input monitoring for open and short circuit on the system side 5 3 Connection LAN Interface ETH0 10 100 LED Green Description Off 10 MBit Ethernet detected On 100 MBit Ethernet det...

Page 29: ...8511 Lüdenscheid Tel 49 0 2351 9386 86 Fax 49 0 2351 9386 93 Internet http www hopf com E Mail info hopf com 5 4 Connection Sync Status Optical Coupler The Sync Status Optical Coupler connection is a 3 pole pluggable screw terminal Sync Status Optical Coupler 3 pole pluggable Connector Pin Signal 1 Collector 2 n c 3 Emitter ...

Page 30: ...f the Time Server 8029HEPTA GPS via Web browser Log in as master Change default passwords for master and device In the DEVICE tab Set all required LAN parameters e g entry of DNS server in NETWORK tab if necessary Check current settings in NTP tab and modify according to individual needs as necessary Parameterize following values of the Sync Source here Module 8024GPS in GPS SYNC SOURCE tab o Set ...

Page 31: ...PTA GPS starts running with the boot process indicated in the display see Chapter 6 3 LCD Display after Switch On Reset Boot Phase DC power supply Switch on external power supply source The Time Server 8029HEPTA GPS starts running with the boot process indicated in the display see Chapter 6 3 LCD Display after Switch On Reset Boot Phase The green Power LED resp the power supply LED light up for bo...

Page 32: ...with a Factory Default setting causes problems in the network the basis network parameterization should be executed via a Peer to Peer network connection Request the required network parameters from your network administrator if those are unknown The network connection is made via a LAN cable and RJ45 plug recommended cable type CAT5 or better 6 5 Network Configuration for ETH0 via LAN through hmc...

Page 33: ...ork Configuration Assistant After a successful start of the hmc Network Configuration Assistant and completed search of the hopf LAN devices the configuration of the base LAN parameters can be done The Time Server 8029HEPTA GPS is stated as 8029HEPTA in the Device List The determination of different Time Server 8029HEPTA GPS or other products variants is made via Hardware Address MAC Address The f...

Page 34: ... the network administrator in order to avoid problems on the network e g duplicate IP address IP Address IPv4 An IP address is a 32 bit value divided into four 8 bit numbers The standard presentation is 4 decimal numbers in the range 0 255 separated from each other by dots dotted quad notation Example 192 002 001 123 The IP address consists of a leading network ID followed by the host ID Four comm...

Page 35: ...xx are designated as Class E and are reserved Gateway Address The gateway or router address is required in order to be able to communicate with other network segments The standard gateway must be set to the router address which connects these segments This address must be within the local network After entering the above mentioned LAN parameters they needed to be transferred to the Time Server 802...

Page 36: ...splay the following start up picture appears for approx 30 seconds after switching on or a reset h o p f 8 0 2 9 H E P T A _ V 2 G P S B o o t i n g S t a t u s L E D s F r o n t L E D T e s t a c t i v e 7 1 Pushbutton Function Light Scroll The pushbutton has 3 functions right now 1 Activation of the backlight if not already been activated 2 Switching to the next displayed image 3 If the pushbutt...

Page 37: ... with the Weekday in abbreviations complies with MONDAY SUNDAY 12 JAN 2016 Display of date Day Abbr of Month Year It can be switched between UTC and local time as time basis for the display by using the button Therefore the pushbutton must be pressed for 5 seconds GPS Information The number of the currently and actually received satellites is shown here If the value drops under 04 the value starts...

Page 38: ... 3 GENERAL ERROR Should a failure occur within the system not ensuring a defined and safe operation of the Time Server 8029HEPTA GPS anymore this is indicated via the LCD Display If there is an active GENERAL ERROR the backlight is activated If such an error occurs it is recommended to disconnect the system from power for 30 seconds and then turn it on and put it into operation again If the failur...

Page 39: ...rtime is parameterized these values can be read in the display Example T i m e Z o n e S D 0 2 0 0 S U 2 8 0 4 2 0 1 3 O f f s e t 0 1 0 0 D S 0 3 0 0 S U 2 7 1 0 2 0 1 3 The difference time to UTC was set to 1h in the above example Based on the general parameters for the summer wintertime changeover set in the WebGUI the following switching points are calculated for the current year 2013 by the s...

Page 40: ... P S V 1 2 1 1 0 9 9 1 2 0 9 8 1 3 0 9 7 1 4 0 9 6 S A T T 0 9 1 5 0 9 5 1 6 0 9 4 1 7 0 9 3 1 8 0 9 2 Maximal 8 satellites are shown in the display regardless from the actually received number 7 7 Position In this picture the position determined by the GPS receiver or rather set via the WebGUI is displayed Example G P S L a t i t u d e 5 1 1 2 6 8 6 1 N o r t h P O S L o n g i t u d e 0 0 7 3 9 8...

Page 41: ... C S O U R C E E R R O R N o e r r o r Example for a Sync Source ERROR S Y N C S O U R C E E R R O R 0 1 E R R O R A C T I V E H W A n t e n n a c i r c u i t o p e n In the above picture no antenna has been connected to the system or rather the cable to the antenna is interrupted 7 10 Announcements Summertime Leap Second In this picture the availability of an announcement for a summer wintertime ...

Page 42: ... m a g e 0 6 0 0 P D a t e 1 6 0 2 2 0 1 6 In the display image SYS Info 02 the serial number and the H8 processor version of the Module 8029HEPTA are shown in the first line whereas in the second line the serial number of the Sync Source and its H8 processor version are stated Example S Y S I n f o 8 0 2 9 0 1 0 1 3 3 P 0 6 0 0 1 6 0 2 2 0 1 6 0 2 0 4 8 0 2 4 0 1 0 3 1 0 P 0 1 0 0 1 6 0 2 2 0 1 6...

Page 43: ...TA GPS PC with installed web browser e g Internet Explorer in the sub network of Time Server 8029HEPTA GPS 8 1 2 Configuration Steps Create the connection to the Time Server with a web browser Login as a master user default password master is set by delivery Switch to Network tab and if available enter the DNS Server required for NTP and the alarm messages depending of network Save the configurati...

Page 44: ... to a web browser if it has been set up correctly Enter the IP address http xxx xxx xxx xxx as set up in the Time Server 8029HEPTA GPS earlier or the DNS name on the address line and the following screen should appear When using IPv6 it is mandatory to enclose the IPv6 address with e g http 2001 0db8 85a3 08d3 0370 7344 The complete configuration can only be completed via the modules WebGUI The We...

Page 45: ...erentiation is made between upper and lower case characters in the password Alphanumeric characters and the following symbols can be used _ The password must be between 6 and 20 characters long and contain at least one uppercase letter one lowercase letter and one digit The password should be changed after the first login for security reasons The following screen should be visible after logging in...

Page 46: ...te Change master password Diagnostics Download configuration files 8 2 2 Navigation via the Web Interface The WebGUI is divided into functional tabs Click on one of these tabs to navigate through the board The selected tab is identified by a darker background colour see the following image General in this case User login is not required in order to navigate through the board configuration options ...

Page 47: ...NC SOURCE tab are saved in Module 8029HEPTA For these data the value saving is divided into two steps For a permanent saving the modified value must first be accepted with Apply from the module and then be stored with Save Otherwise the modifications get lost after a reboot of the module or switching the system off After an entry with Apply is made the configured field is marked with a star This m...

Page 48: ... network parameters again and to save the data with Save permanently For adopting changes and entering values only the respective buttons in the WebGUI can be used 8 2 3 2 Changing of Data in 8024GPS WebGUI GPS Sync Source The modified data in the GPS SYNC SOURCE tab are directly transferred to the Module 8024GPS by pushing the button 1 and stored failsafe in Module 8024GPS Tabs with settings and ...

Page 49: ...ated in the above image an invalid value e g text where a number should be entered IP address not within the range etc is identified by a red border when an attempt is made to accept these settings It should be noted here that this is only a semantic check and not to test whether an entered IP address can be used on the own network or in the configuration As long as an error message is displayed i...

Page 50: ...nc Source 8 3 1 GENERAL Tab This is the first tab displayed when using the web interface NTP Time Status This area shows basic information about the current time and date of the Time Server 8029HEPTA GPS The time always corresponds to UTC The reason for this is that NTP always works with UTC and not with local time Stratum displays the actual NTP stratum value of the Time Server 8029HEPTA GPS with...

Page 51: ...manual setting INVA Invalid time Login The login box is described in Chapter 8 2 1 LOGIN and LOGOUT as User System Overview This table gives a direct overview of the Time Server s 8028NTS GPS current operating states WebGUI Description Sync Source OK When active RED there is a Sync Source failure For details please go to GPS SYNC SOURCE tab Module Errors Announcement leap second inactive When acti...

Page 52: ...s the WebGUI with the new network parameters again and to save the data with Save permanently 8 3 2 1 Host Name Service Setting for the explicit network detection 8 3 2 1 1 Hostname The standard setting for the Hostname is hopf8029hepta This name should also be adapted to the respective network infrastructure If in doubt simply leave the standard value in place or ask your network administrator Th...

Page 53: ...or details of the DNS server if not known If no DNS server is available special case enter 0 0 0 0 in the input field or leave the field blank 8 3 2 1 3 Use Manual Gateway Entries With this setting you can select whether the manually entered gateways Default Gateway IPv4 and Default Gateway IPv6 should be used If enabled is selected here the entries in Default Gateway IPv4 and Default Gateway IPv6...

Page 54: ...work Interface ETH0 Configuration of the Ethernet interface ETH0 of the Time Server 8029HEPTA GPS 8 3 2 2 1 Default Hardware Address MAC The factory default MAC address can only be read and cannot be changed by the user It is assigned once only by hopf Elektronik GmbH for each Ethernet interface For further information about the MAC address refer to Chapter 2 2 6 1 MAC Address for ETH0 for the Tim...

Page 55: ...s to be activated by the function Use Custom Hardware Address MAC with enable and subsequently save it with Apply and Save Afterwards the customers MAC address has to be entered in hexadecimal form with a colon to separate as described in the below example e g 00 03 c7 55 55 02 The MAC address assigned by hopf can be activated at any time by disabling this function There are no MAC multicast addre...

Page 56: ...ion Unit MTU The Maximum Transmission Unit describes the maximum size of a data packet of a protocol of the network layer layer 3 of OSI model measured in octets which can be transferred into the frame of a net of the security layer layer 2 of OSI model without fragmentation The Time Server 8029HEPTA GPS is going to be delivered with default setting 1356 8 3 2 2 8 IPv6 The Time Server 8029HEPTA GP...

Page 57: ...nown it must be requested by the network administrator 8 3 2 2 12 VLAN Activation Key necessary A VLAN Virtual Local Area Network is a logical sub network within a network switch or a whole physical network VLANs are used to separate the logical network infrastructure from the physical wiring thus to virtualize the Local Area Network The technology of VLAN is standardized by IEEE Standard 802 1q N...

Page 58: ...ing the button Add An explicit VLAN ID must be configured for each VLAN interface The boxes Label and Remark can be filled out with a designation or a comment to easily keep the configured VLANs apart Determination of the IPv4 address for the configured VLAN interface can either be done automatically via DHCP or by filling out the boxes IP Address and Network Mask To ensure the correct function th...

Page 59: ...teway gateway host need to be in the local sub network range of the module in order to use the static routes The parameterization of this feature is a critical process as an incorrect configuration may lead to considerable problems on the network WebGUI with Routing activated The image above shows every configured route of the base system routing table as well as the user s defined static routes T...

Page 60: ...le Syntax Each line of the routing file must be either a valid routing line or a comment line A comment line starts with a hash sign and can contain any text behind it A routing line has the format destination address tab length of the destination mask in bits tab gateway address for the specified destination If the host 192 168 20 11 is to be reached using the gateway 192 168 0 2 then the routing...

Page 61: ... should be disabled for security reasons A correctly configured module is always accessible via the web interface Changes to the availability of a protocol enable disable take effect immediately For SNMP functionality an activation key is necessary If by mistake all protocol channels become disabled the SSH channel is automatically enabled after the attempt to save After a Factory Default the HTTP...

Page 62: ...e Server with LAN Interface V08 00 62 130 hopf Elektronik GmbH Nottebohmstr 41 D 58511 Lüdenscheid Tel 49 0 2351 9386 86 Fax 49 0 2351 9386 93 Internet http www hopf com E Mail info hopf com WebGUI with Alarming activated Using SNMP and SNMP traps the protocol SNMP should be enabled ...

Page 63: ...2 both fields SNMP Read Only Community and SNMP Read Write Community must remain empty SNMPv2 SNMPv2 enabled SNMPv2 disabled Read Only Community set e g public empty Read Write Community set e g secret empty In order to enable SNMPv3 the following fields must be set SNMPv3 Description Security Name SNMPv3 is enabled identical to the username Access Rights Equivalent to the Read Write Communities i...

Page 64: ...Activation and configuration of different synchronization protocols All protocols can be enabled at the same time 8 3 2 6 1 Synchronization Protocols Time Protocols NTP SNTP etc Needed time protocols can be enabled here NTP incl SNTP DAYTIME TIME SINEC H1 time datagram Activation Key necessary 8 3 2 6 2 SINEC H1 Time Datagram Activation Key necessary Configuration of the SINEC H1 time datagram Bro...

Page 65: ...ocal time UTC Standard time Standard time with daylight standard time status Destination MAC Address 09 00 06 03 FF EF 09 00 06 01 FF EF FF FF FF FF FF FF Synchronization Status based on Starting Transmission Minimum Accuracy This setting defines at which internal accuracy status the SINEC H1 time datagram should be transmitted see Chapter 14 5 Accuracy NTP Basic Principles and Chapter 12 Technica...

Page 66: ...ring this time the NTP algorithm adjusts the internal accuracy parameters The NTP time protocol must be enabled in order to use NTP see Chapter 8 3 2 6 Time After all changes relating to NTP a restart of the NTP service must be performed see Chapter 8 3 3 6 Restart NTP Via the NTP protocol SNTP Clients can also be synchronized In contrast to NTP in SNTP Clients delay times are not evaluated on the...

Page 67: ... 3 3 3 Peers The Peers summary is used to track the performance of the configured NTP server driver and the NTP algorithm itself The information displayed is identical with the information available via NTPQ or NTPDC programs Each NTP server driver that has been set up in the NTP server configuration is displayed in the peer information The connection status is displayed in the reachability column...

Page 68: ...splayed here 8 3 3 4 1 Synchronization Source General Synchronization source As Synchronization source either GPS or DCF77 depending on the appropriate Sync Source has to be selected This is required in order to align the NTP algorithm for the calculation of the accuracy with the synchronization source Based on the selection of GPS even though GPS is not the source of the Sync Source different pro...

Page 69: ...ation of the Sync Source For the synchronization of NTP Clients during crystal operation of the Sync Source or for testing the system without connected synchronization source in the setting enabled any stratum value between 1 and 15 can be set Crystal Operation Stratum in Crystal Operation The value defined here range 1 15 designates the transmitted fall back NTP stratum level of the module in Qua...

Page 70: ...erver The configuration of a multicast server is similar to that of a broadcast server However a multicast group address class D is used instead of the broadcast address An explanation of multicast technology goes beyond the scope of this document In principle a host or router sends a message to an IPv4 multicast group address and expects all hosts and routers to receive this message In doing so t...

Page 71: ... I agree 8 3 3 5 1 Suppression of unspecified NTP Outputs Block Output when Stratum Unspecified Unspecified NTP outputs that e g are generated by NTP at a restart are suppressed when this function is enabled 8 3 3 5 2 NTP Timebase For custom applications this function enables adjustment of the time base of the NTP output Entering this function the transmitted time protocol of the Time Server is no...

Page 72: ...sted in the base system without considering the daylight saving time changeover NTP with the Time Base Local Time Output of the NTP time protocol with the local time base the released time information correspond with UTC plus the time difference and the additional offset for the possible summer time adjusted in the base system NTP does not allow any leaps in time Using the NTP time protocol with t...

Page 73: ...Restart NTP The following screen appears after clicking on the Restart NTP option Restarting NTP services is the only possibility of making NTP changes effective without having to restart the entire Time Server 8029HEPTA GPS As can be seen from the warning message the currently reachable stability and accuracy get lost caused by this restart After a restart of the NTP service it takes up to 10 min...

Page 74: ... used when configuring the restrictions no Hostnames The following steps show how restrictions can be configured should these not be required it is sufficient to retain the standard settings The standard restrictions tell the NTP service how to handle packets of hosts including remote time servers and sub network which otherwise have no special restrictions The NTP configuration can simplify the s...

Page 75: ...nts to be allowed to see the server status information when they receive the time information from the NTP service even if this is information about the module operating system and NTPD version No In this case select from the following standard restrictions See Chapter 8 3 3 7 6 Access Control Options kod notrap nopeer noquery Yes In this case select from the following standard restrictions See Ch...

Page 76: ... to its own NTP service is always allowed irrespective of whether standard restrictions are ignored or not This is necessary in order to be able to display NTP data on the web interface Add restriction exception for each remote time server Restrictions Press ADD Enter the IP address of the remote time server Enable restrictions e g notrap nopeer noquery Allow unrestricted access to a special host ...

Page 77: ...not encrypted should be ignored it should be noted that this is a change from ntp 4 1 x The notrust option MUST NOT be used unless NTP Crypto e g symmetric key or Autokey has been correctly configured on both sides of the NTP connection e g NTP service and remote time server NTP service and client noquery Do not allow this host sub network to request the NTP service status The ntpd status request ...

Page 78: ... authentication whereby a code word is used on the client side and a restriction on the server side NTP uses keys to implement the authentication These keys are used when data are exchanged between two machines In principle both sides must know this key The key can generally be found in the etc ntp keys directory It is unencrypted and hidden from public view This means that the key has to be distr...

Page 79: ...he same way as a password The value of the request key field is used as the password for the ntpdc tool while the value of the control key field is used as the password for the ntpq tool More information is available at http www ntp org 8 3 3 8 4 How does authentication work The basic authentication is a digital signature and no data encryption if there are any differences between the two The data...

Page 80: ... by pressing the Generate now button Generate now This should be carried out regularly as these keys are only valid for one year If the Time Server 8029HEPTA GPS is to form part of an NTP trust group a group key can be defined and uploaded with the Upload now button Detailed information about the NTP Autokey scheme can be found in the NTP documentation http www ntp org Changes in data do not take ...

Page 81: ...led depending on the Syslog level every message is transmitted to the Syslog server and stored in the Syslog file there Syslog uses Port 514 Co logging in the system itself is not possible as therefore the internal memory is not of sufficient size It should be noted that the standard Linux Unix Syslog mechanism is used for this functionality This is not the same as the Windows System Event mechani...

Page 82: ...ing E mail addresses which each have different alarm levels Dependending on the configured level an E mail is sent after an error has occurred on the respective receiver A valid E mail server SMTP server must be entered for the purpose of correct configuration Some E mail servers only accept messages if the sender address entered is valid spam protection This can be inserted in the Sender Address ...

Page 83: ...at these are based on UDP and therefore it is not certain that they will reach the configured host Several hosts can be configured However all have the same alarm level The private hopf enterprise MIB is also available over the web see Chapter 8 3 5 11 Downloading Configuration Files SNMP MIB The Alarm Level designates the priority level of the messages to be sent and determines from which level t...

Page 84: ...et http www hopf com E Mail info hopf com 8 3 4 4 Alarm Messages Every message shown in the image can be configured with the displayed alarm levels Selection of the level NONE means that this message is completely ignored Depending on the messages their configured levels and notifications levels of the E mails a corresponding action is carried out if an event occurs Modified settings are failsafe ...

Page 85: ...irmware Password administration and the update services for the module are also made accessible via this website The complete download zone is also a component of this site 8 3 5 1 Device Information All information is available exclusively in write protected and read only form Details on the board type serial number and current software versions are provided to the user for service and enquiry pu...

Page 86: ...is function serves to reset all values in the flash memory to their factory default values This also includes passwords see Chapter 13 1 Factory Default Values of Module 8029HEPTA Device Please log in as a Master user in accordance with the description in Chapter 8 2 1 LOGIN and LOGOUT as User Pressing the Reset now button releases setting of the factory default values Once this procedure has been...

Page 87: ...art concerns the Module 8029HEPTA and the Sync Source here Module 8024GPS All settings not saved with Save are lost on reboot see Chapter 8 2 3 Enter or Changing Data Moreover the NTP service implemented in the system is restarted This leads to a renewed alignment phase with the loss of the stability and accuracy reached up to this point Log in is carried out as Master user in accordance with the ...

Page 88: ...the factory for repair at customer s expense Is the update on hand suitable for the module If there are any doubts please consult the support of the hopf company In order to guarantee a correct update the New version of saved site function must be set to On each access to the site on the Internet browser used During the update procedure the device must not be switched off nor settings be saved to ...

Page 89: ...orrect image update the digit marked red of the serial number must be checked Required ZIP archive for the Image Update Red marked digit 1 Red marked digit 4 hopf8029HEPTA V2 SERI_GPS_SET_v07xx zip hopf8029HEPTA V2 NAND_GPS_SET_v07xx zip Content of the ZIP archive 8024A_128_v01xx mot 8029HEPTA V2_128_v05xx mot readme_8029HEPTA V2 SERI_GPS txt release notes_8029HEPTA V2 SERI_GPS html upgrade_8029 S...

Page 90: ...ted by pressing the Update now button The update is installed if the transfer and checksum test are successful A success page is displayed and shows the number of bytes that have been transferred and installed After the image update the WebGUI displays a window to confirm the reboot of the Time Server 8029HEPTA GPS 8 3 5 6 Upload von Anwender SSL Server Zertifikat Upload Certificate Hiermit besteh...

Page 91: ...rmation can be written as unformatted text There are 2000 characters available to write failsafe into the device When saving the text only the following characters are accepted all other characters are discarded and therefore not displayed on the General page Capital letters A Z Lowercase letters a z Numbers 0 9 The following special characters space exclamation mark Comma dot Colon question mark ...

Page 92: ...NEC H1 time datagram a special activation key is required for which an order with the hopf Elektronik GmbH can be placed Each activation key is related to a special board with an appropriate serial number and cannot be used for several boards For a subsequent order of an activation key the serial number of the Module 8029HEPTA device needs to be provided The serial number can be found under the ta...

Page 93: ...y Key Reset Clears all activation keys and sets all optional features to status Inactive All other non optional features are still available after performing the key reset If an optional feature is enabled again the last stored configuration for this feature is restored 8 3 5 9 Diagnostics Function It status messages is enabled the output is processed as SYSLOG message This function should only be...

Page 94: ...ary to be logged on as a master user The loaded file System Configuration from the module is only used for support purposes and cannot be reloaded for adjusting the settings in the Time Server 8029HEPTA GPS For the download of the file System Configuration the following process is mandatory 1 Pressing the button SAVE 2 Pressing the button Refresh System Configuration 3 After approximately 30 secon...

Page 95: ... Sync Source by pressing the button 1 and failsafe stored in Module 8024GPS This behaviour is indicated on the modified display of the Apply button The buttons 2 and 3 are without function in the tab GPS SYNC SOURCE and are not required After the data transfer to 8024GPS it can take up to 30 seconds until the modified data are re read from 8029HEPTA for the WebGUI indication This delayed indicatio...

Page 96: ...er winter time Sync Source Status Display of the actual status of synchronization of the Sync Source with these possible values SYNC Time synchronized Quartz regulation started running SYOF Time synchronized SyncOFF running SYSI Time synchronized as simulation mode without actual GPS reception QUON Quartz Crystal time SyncON running QUEX Quartz Crystal time in freewheel after synchronization failu...

Page 97: ... 3 Time Zone Offset Setting of the difference time Time Zone Offset from UTC to the local standard time winter time in the Sync Source here Module 8024GPS The difference time to be entered always relates to the local standard time winter time even though the commissioning or rather the input of the difference time takes place during daylight saving time Offset Hours Time Zone Offset input of the f...

Page 98: ...ed for the running year After the turn of the year the changeover times for summer winter time are automatically recalculated without any user intervention DST Activation enabled disabled Changeover times for summer winter time DST Begin Changeover time for standard time to Daylight Saving Time DST End Changeover time for Daylight Saving Time to standard time The individual items have the followin...

Page 99: ...tellites in View Number of available satellites detected by the GPS receiver Satellites Tracked Effective number of received satellites used for synchronization Satellites Number S N Ratio Overview of actually received GPS satellites with their number and reception quality and the pertinent interpretation Green 48 Good reception quality Yellow 31 47 Sufficient reception quality Red 0 30 Poor recep...

Page 100: ...gnal runtime to several satellites is determined from the calculated position and the precise second mark is generated from their mean value Stationary Mode Position Fixed Standard operation In Stationary Mode Fixed position the GPS receiver calculates its accuracy based on a fixed position If four or more satellites are received in this mode the exact location is updated automatically In this mod...

Page 101: ...not required for this device and should always be set to 0 SyncOFF Timer This value is used to provide reception failure bypassing for an error message free operation even under poor reception conditions In the event of a reception failure of the Sync Source here Module 8024GPS the decrease of the Sync Source to quartz status is delayed by the set value The system continues to run in synchronizati...

Page 102: ...tebohmstr 41 D 58511 Lüdenscheid Tel 49 0 2351 9386 86 Fax 49 0 2351 9386 93 Internet http www hopf com E Mail info hopf com 8 3 6 9 Module Info This tab indicates information about the hardware and software of the Module 8024GPS Sync Source implemented in the Time Server 8029HEPTA GPS These details might be provided for service and support purposes ...

Page 103: ...lues the GPS receiver needs up to 13 minutes of satellite reception in order to generate the correct information on the leap second from the GPS data Only then the Sync Source here Module 8024GPS can be synchronized During this time however only when the GPS receiver really receives satellites the following message is displayed in the tab Module Errors GPS Receiver in raw data mode no synchronisat...

Page 104: ...ttempts may under certain circumstances require the module to be returned to the factory for repair at customer s expense Is the update on hand suitable for the module If there are any doubts please consult the support of the hopf company In order to guarantee a correct update the New version of saved site function must be set to On each access to the site on the Internet browser used During the u...

Page 105: ...ule 8024GPS If a collected error message is displayed in the GENERAL tab there is at least one error Sync Source Error This page is updated automatically every 5 seconds Overview Software Errors General Module error PCID If this error occurs even after a Power down the device is damaged GPS receiver initialization active This condition might last for max 1 minute after particular actions Missing d...

Page 106: ...ircuit shorted The Sync Source here Module 8024GPS has detected a short circuit in the antenna system The antenna system should be checked Antenna circuit open The Sync Source here Module 8024GPS has detected an open antenna input The antenna system should be checked FRAM error If this error occurs even after a voltage reset the support team of company hopf needs to be contacted for further action...

Page 107: ...ted in this selection window in rising quality from the bottom to the top SYNC optimal condition Behaviour of Optical Coupler Selected status achieved or better Optical coupler switched through Selected status not achieved Optical coupler blocked Value range Optical Coupler Status SYNC Time synchronized Quartz regulation started running SYOF Time synchronized SyncOFF running SYSI Time synchronized...

Page 108: ...clusively via the WebGUI It is just as easy to use SSH Port 22 or Telnet Port 23 as the WebGUI Both protocols use the same user interface and menu structure The user names and passwords are the same as on the WebGUI and are kept in alignment see Chapter 8 3 5 10 Passwords Master Device SSH does not allow blank passwords for safety reasons The corresponding protocols should be enabled for the use o...

Page 109: ...10 1 1 Complete Failure Description The Status LEDs on the front panel are off Cause Problem Solution Device is switched off Voltage supply failure Power supply defective 10 1 2 No GPS Reception No Synchronization Description In WebGUI the status of the SYNC SOURCE is not displayed with SYNC or SYOF The Status LEDs of Module 8024GPS on the front panel do not indicate SYNC or SYOF status Cause Prob...

Page 110: ...or crimped Indirect lightning protection was irreversibly damaged by overvoltage The antenna is defective Case 4 Effect The equipment was working perfectly but has not been receiving for several days 7 satellites appear in the visibility range V 07 but no satellite is displayed Possible Errors The cable has been damaged There was excess voltage on the antenna equipment and the indirect lightning p...

Page 111: ... and the following information If possible for each problem the Configuration File in the tab DEVICE should be downloaded from the device and be sent to the hopf support see Chapter 8 3 5 11 Downloading Configuration Files SNMP MIB With the file System Configuration or if not possible with the serial number of the System When does the error occur During commissioning or operation Exact error descr...

Page 112: ...ing agents containing solvents Cleaning agents containing acids Abrasive media The use of such cleaning agents or media could damage the Time Server 8029HEPTA GPS Do not use a wet cloth to clean the Time Server 8029HEPTA GPS There is the danger of an electric shock To clean the Time Server 8029HEPTA GPS use a cloth that is Antistatic Soft Non fabric Damp 11 2 Cleaning the Housing Make sure that co...

Page 113: ...l input voltage 100 240V AC 47 63Hz Connection via input connector compliant with IEC EN 60320 1 C14 with EMI line filter and switch Input voltage range 85 264V AC Frequency 47 63Hz Current consumption at nominal values Approx 0 37A 120V AC 0 23A 230V AC Starting current Typ 15A IO 100 120V AC Typ 30A IO 100 230V AC Mains failure bridging at nominal load 20msec 100V AC Turn on time after applicati...

Page 114: ...t output 1 500V DC 1 minute 500V DC 50M at least 20 C 15 C 1 500V DC 1 minute 500V DC 50M at least 20 C 15 C 2000V AC 1 Minute residual current 10mA 500V DC 50M at least at room temp Output Data internal only Internal nominal output voltage 5V DC 5V DC 5V DC Nominal output current IN 0 C 55 C 3A UOUT 5V DC 3A UOUT 5V DC 3A UOUT 5V DC Efficiency 90 90 74 Ambient Conditions Temperature range Operati...

Page 115: ...s HIGH Lambda 15ms and Stratum 1 15 Stability 2ppm or Offset 1ms MEDIUM Lambda 15ms or Stratum 16 LOW DCF77 System Accuracy Lambda 15ms and Stratum 1 15 Stability 0 6ppm HIGH Lambda 15ms and Stratum 1 15 Stability 0 6ppm to 2ppm Offset 2ms HIGH Lambda 15ms and Stratum 1 15 Stability 2ppm or Offset 2ms MEDIUM Lambda 15ms or Stratum 16 LOW Time Protocols NTPv4 Server NTP Broadcast Mode NTP Multicast...

Page 116: ...reception T 20 C Drift for T 20 C constant after 1h 0 72msec after 24h 1 73msec Internal back up clock RTC 25ppm for T 10 C to 50 C GPS Data Receiver type 22 channel phase tracking receiver C A code Evaluation L1 frequency 1575 42MHz Sensitivity Tracking 161dB Cold Start 148dBm Synchronization time TTF Time to First Fix Warm start 1min Cold start 5min first installation 12 5 min without valid leap...

Page 117: ...eeds to be re configured to DCF77 after a factory default NTP Server Configuration Setting WebGUI Sync Source GPS GPS 13 1 1 Network Host Name Service Setting WebGUI Hostname hopf8029HEPTA hopf8029HEPTA Use Manual DNS Entries Enabled Enabled DNS Server 1 IPv4 IPv6 Address Blank DNS Server 2 IPv4 IPv6 Address Blank DNS Server 3 IPv4 IPv6 Address Blank Use Manual Gateway Entries Enabled Enabled Defa...

Page 118: ... datagram Setting WebGUI Send Interval Every second 1 second Time base UTC UTC Destination MAC Address 09 00 06 03 FF EF 09 00 06 03 FF EF Minimum Accuracy LOW LOW 13 1 2 NTP NTP Server Configuration Setting WebGUI Sync Source GPS GPS NTP to Syslog Disabled Disabled Switch to specific stratum Disabled Disabled Stratum in crystal operation Blank Broadcast address Blank Authentication Disabled None ...

Page 119: ...evel Disabled none E mail Configuration Setting WebGUI E mail Notifications Disabled Disabled SMTP Server Blank Sender Address Blank E mail Addresses Blank SNMP Traps Configuration Setting WebGUI SNMP Traps Disabled Disabled Alarm Level Disabled none SNMP Trap Receivers Blank Alarm Messages Setting WebGUI Alarms all Disabled all none 13 1 4 DEVICE User Passwords Settings WebGUI Master Password mas...

Page 120: ...ring a factory default of Module 8024GPS two steps are carried out 1 Deleting the current leap second information in the GPS receiver 2 Following parameters are set to default values Difference time 00h 00min east Changeover times disabled Begin of Daylight Saving Time Week first Day Monday Month January Hour 0 End of Daylight Saving Time Week first Day Monday Month January Hour 0 SyncON SyncOFF T...

Page 121: ...esents the maximum error of the local clock relative to the reference clock Jitter The estimated time error of the system clock measured as the average exponential value of the time offset 14 2 Tally Codes NTP specific space reject Rejected peer either the peer is not reachable or its synchronization distance is too great x falsetick The peer was picked out by the NTP intersection algorithm as a f...

Page 122: ...he fact that local daylight and sunlight coincide at different times in the individual time zones The zero meridian runs through the British city of Greenwich Time Offset This is the difference between UTC and the valid standard time of the current time zone The Time Offset will be commit from the local time zone Local Standard Time winter time Standard Time UTC Time Offset The time offset is defi...

Page 123: ...t Protocol LAN Local Area Network LED Light Emitting Diode NTP Network Time Protocol NE Network Element OEM Original Equipment Manufacturer OS Operating System RFC Request for Comments SNMP Simple Network Management Protocol handled by more than 60 RFCs SNTP Simple Network Time Protocol S STD Standard Time TCP Transmission Control Protocol http de wikipedia org wiki User_Datagram_Protocol ToD Time...

Page 124: ...stems via packet based communication networks Although it is processed mainly over UDP it can also be transported by other layer 4 protocols such as TCP It was specially developed to facilitate reliable timing via networks with variable packet runtime NTP uses the Marzullo algorithm devised by Keith Marzullo of the San Diego University in his dissertation with a UTC timescale and supports leap sec...

Page 125: ...MIB s Management Information Base the management programmes are able to represent the hierarchical structure of the data of any SNMP agent and to request data from them In addition to the MIB s defined in the RFC s every software and hardware manufacturer can define his own so called private MIB s which reflect the special characteristics of his product 14 4 4 TCP IP Transmission Control Protocol ...

Page 126: ...server is exactly as long as the return path The NTP algorithm can only filter out changes on a statistical basis The use of several servers makes it possible for the combining algorithm to pick up and filter out any such errors However there is no possibility of filtering if this asymmetry is present on all or most of the NTP servers faulty routing etc 3 It goes without saying that the accuracy o...

Page 127: ...http www hopf com E Mail info hopf com 15 List of RFCs NTPv4 Protocol and Algorithms Specification RFC 5905 NTPv4 Autokey Specification RFC 5906 PPS API RFC 2783 DHCP RFC 2131 Time Protocol RFC 868 Daytime Protocol RFC 867 HTTP RFC 2616 HTTPS RFC 2818 SSH 2 RFC 4250 4256 4335 4344 4345 4419 4432 4716 5656 TELNET RFC 854 SNMPv2 RFC 1213 RFC1901 1908 SNMPv3 RFC 3410 SYSLOG RFC 5424 SMTP RFC 5321 ...

Page 128: ...event 2 1 8 stable 3 clause BSD no libopenssl 1 0 2n Dual http www openssl org source license html no libpcap 1 8 1 BSD no libzlib 1 2 11 Copyright C 1995 2017 Jean loup Gailly and Mark Adler This software is provided as is without any express or implied warranty In no event will the authors be held liable for any damages arising from the use of this software Permission is granted to anyone to use...

Page 129: ...S OR SERVICES LOSS OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE linux 4 8 6 GPL v2 no linux headers 4 8 6 GPL v2 no lzo 2 10 GPL v2 no mtd 2 0 1 GPL v2 no netsnmp 5 7 3 BS...

Page 130: ...ns of source code in whole or in part must retain the above copyright notice definition disclaimer and this list of conditions 2 Redistributions in binary form compiled executables and libraries must reproduce the above copyright notice definition disclaimer and this list of conditions in documentation and or other materials provided with the distribution The sole exception to this condition is re...

Search results

Summary of Contents for 8029HEPTA-V2/GPS

Reviews:

Related manuals for 8029HEPTA-V2/GPS

Brands by name

Popular brands

hopf 8029HEPTA-V2/GPS, Technical Manual

Search results

Summary of Contents for 8029HEPTA-V2/GPS

Reviews:

Related manuals for 8029HEPTA-V2/GPS

Brands by name

Popular brands