Mobatime DTS 4020.timebridge User manual

© MOBATIME BE-801299.00
MOUNTING AND
INSTRUCTION MANUAL
DTS 4020.timebridge
Network – Time Bridge
Publication Note:
This Manual is a preliminary publication version of BE-801299.00

© MOBATIME 2 / 94 801299.00
Certification of the Producer
STANDARDS
The DTS 4020.timebridge was developed and produced in accordance with the EU Guidelines:
2014 / 30 / EU EMC
2014 / 35 / EU LVD
References to the Instruction Manual
1. The information in this Instruction Manual can be changed at any time without notice.
The current version is available for download on www.mobatime.com.
2. The device software is continuously being optimized and supplemented with new options. For this
reason, the newest software version can be obtained from the Mobatime website.
3. This Instruction Manual has been composed with the utmost care, in order to explain all details in
respect of the operation of the product. Should you, nevertheless, have questions or discover errors in
this Manual, please contact us.
3. We do not answer for direct or indirect damages, which could occur, when using this Manual.
4. Please read the instructions carefully and only start setting-up the product, after you have correctly
understood all the information for the installation and operation.
5. The installation must only be carried out by skilled staff.
6. It is prohibited to reproduce, to store in a computer system or to transfer this publication in a way or
another, even part of it. The copyright remains with all the rights with BÜRK MOBATIME GmbH,
D-78026 VS-Schwenningen and MOSER-BAER AG – CH 3454 Sumiswald / SWITZERLAND.

© MOBATIME 3 / 94 801299.00
Overview
1Safety................................................................................................................................5
2Maintenance.....................................................................................................................7
3General Information: Introduction..................................................................................8
4LED displays front side.................................................................................................11
5Installation......................................................................................................................12
6Operation........................................................................................................................13
7Updates ..........................................................................................................................58
8Time administration.......................................................................................................64
9SNMP..............................................................................................................................74
10 Redundant Power supply..............................................................................................78
Appendix
AConnection diagrams....................................................................................................79
BAlarm list........................................................................................................................82
CTroubleshooting ............................................................................................................84
DToD (Time of Day) Protocol Specification....................................................................85
ECopyright Notice............................................................................................................87
FTechnical data................................................................................................................88
GIndex...............................................................................................................................91
HConnection table (to fill in)............................................................................................93

© MOBATIME 4 / 94 801299.00
Table of contents
1Safety.....................................................5
1.1 Safety instructions...............................................5
1.2 Symbols and Signal Words used in this
Instruction Manual...............................................5
1.3 Intended Use.......................................................5
1.4 Observe operating safety!...................................6
1.5 Consider the installation site! ..............................6
1.6 Please observe the electromagnetic
compatibility! .......................................................6
1.7 Network security.................................................6
2Maintenance...........................................7
2.1 Troubleshooting: Repairs....................................7
2.2 Cleaning..............................................................7
2.3 Disposing ............................................................7
3General Information: Introduction ...........8
3.1 Scope of Delivery................................................8
3.2 Technical Data....................................................8
3.3 Device Description in this Manual.......................8
3.4 Introduction .........................................................8
3.5 Device types........................................................9
3.6 DTS Distributed Time System.............................9
3.7 MOBA-NMS - Network Management System ...10
4LED displays front side.........................11
5Installation............................................12
5.1 Connections......................................................12
5.2 Chassis Ground ................................................12
5.3 Boot procedure of the DTS 4020.timebridge.....12
5.4 Initial configuration............................................12
5.5 Firmware...........................................................12
6Operation .............................................13
6.1 General .............................................................13
6.1.1 Telnet..................................................................13
6.1.2 SSH.....................................................................13
6.1.3 Menu structure ....................................................14
6.2 MOBA-NMS operation.......................................15
6.3 Main menu ........................................................16
6.4 Status menu......................................................16
6.4.1 Time status information .......................................18
6.4.2 Time source information......................................20
6.4.3 PTP information...................................................21
6.4.4 Network diagnostic..............................................22
6.5 Configuration menu...........................................23
6.5.1 Outputs................................................................24
6.5.2 Time of day – output............................................25
6.5.3 Signal output digital: Pulse / Frequency / IRIG /
10 MHz................................................................25
6.5.4 Signal output analog: IRIG / 10 MHz....................26
6.5.5 Time handling......................................................27
6.5.6 Time source ........................................................28
6.5.7 Time adjustment / Time-keeping..........................30
6.5.8 Manual time set / Leap second............................31
6.5.10 NTP.....................................................................32
6.5.13 PTP Configuration...............................................35
6.5.14 F-IN settings........................................................38
6.5.15 Alarms.................................................................38
6.5.16 Alarm relay..........................................................38
6.5.17 Alarm mask.........................................................40
6.5.18 E-mail..................................................................41
6.5.19 SNMP traps.........................................................43
6.5.20 General settings..................................................45
6.5.21 Network...............................................................46
6.5.22 IPv4 static routing................................................49
6.5.23 VLAN configuration..............................................50
6.5.24 Services (network services FTP, telnet, SSH...)...51
6.5.25 SNMP..................................................................52
6.5.26 SNMP V1 / V2c....................................................53
6.5.27 SNMP V3 ............................................................53
6.6 Maintenance menu ...........................................56
7Updates................................................58
7.1 Updating images with MOBA-NMS...................58
7.2 Updating images with FTP................................58
7.3 Updating / restore device configuration with
FTP...................................................................59
7.4 Updating images via USB.................................59
7.5 Updating / restore device configuration via
USB...................................................................60
7.6 FTP connection.................................................61
7.7 SFTP connection ..............................................61
7.8 SCP connection................................................62
7.9 Save Configuration externally...........................62
8Time administration ..............................64
8.1 Concept of time administration..........................64
8.2 Synchronization process & diagram..................64
8.3 Time acceptance...............................................66
8.4 Stratum handling...............................................66
8.5 Source change example situation.....................67
8.6 Time server.......................................................68
8.7 Time accuracy, time-keeping............................68
8.8 Leap second .....................................................69
8.8.1 Introduction to the leap second............................69
8.8.2 Leap second handling by the DTS4020:..............69
8.8.3 Leap second alert notification on DTS 4020
outputs ................................................................70
8.8.4 Leap second correction mode..............................70
8.8.5 Leap second status indication..............................70
8.9 NTP Authentication...........................................71
8.9.1 NTP symmetric keys............................................71
8.9.2 NTP Autokey.......................................................72
8.10 PTP...................................................................72
8.11 Synchronous Ethernet (SyncE).........................73
8.12 Oscillator...........................................................73
8.13 Logfile Synchronization status ..........................73
9SNMP...................................................74
9.1 General.............................................................74
9.2 Device configuration with SNMP.......................75
9.3 DTS subagent SNMP notification......................75
9.3.1Startup [dts4020StartUp].....................................75
9.3.2 Shutdown [dts4020Shutdown] .............................75
9.3.3 Status changed [dts4020StatusChanged]............76
9.3.4 Configuration changed
[dts4020ConfigChanged].....................................76
9.3.5 Alive Notification [dts4020Alive]...........................77
9.3.6 Alarm Notification [dts4020Alarm]........................77
10 Redundant Power supply......................78

© MOBATIME BE-801299.00
1 Safety
1.1 Safety instructions
Read this chapter and the entire instruction manual carefully and follow all instructions
listed. This is your assurance for dependable operations and a long life of the device.
Keep this instruction manual in a safe place to have it handy every time you need it.
1.2 Symbols and Signal Words used in this Instruction Manual
Danger!
Please observe this safety message to avoid electrical shock!
There is danger to life!
Warning!
Please observe this safety message to avoid bodily harm and injuries!
Caution!
Please observe this safety message to avoid damages to property and devices!
Notice!
Additional information for the use of the device.
1.3 Intended Use
The DTS 4020.timebridge serves as an interface between the IEEE1588 protocol
(PTP) supplied across a packet network to traditional serial Time-of-day (ToD), 1PPS,
10MHz and IRIG B signals.
For additional functions, see the device descriptions in chapter 3.
The device is designed for 19" racks or DIN rail. Operate the device only in installed
condition and with all connectors plugged in.
!
!

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1.4 Observe operating safety!
•Never open the housing of the device! This could cause an electric short or even a
fire, which would damage your device. Do not modify your device!
•The device is not intended for use by persons (including children) with limited
physical, sensory, or mental capacities or a lack of experience and/or knowledge.
•Keep packaging such as plastic films away from children. There is the risk of
suffocation if misused.
1.5 Consider the installation site!
•To avoid any operating problems, keep the device away from moisture and avoid
dust, heat, and direct sunlight. Do not use the device outdoors.
•The device is designed for 19" racks and should only be operated installed in a 19"
cabinet.
Danger! Make sure
that you wait before using the device after any transport until the device has
reached the ambient air temperature. Great fluctuations in temperature or
humidity may lead to moisture within the device caused by condensation, which
can cause a short.
1.6 Please observe the electromagnetic compatibility!
•This device complies with the requirements of the EMC and the Low-voltage
Directive.
1.7 Network security
•The default password should be changed during commissioning.
•It is not possible to reset the password to factory defaults. The password can be set
ether with MOBA-NMS or SNMP. If you have no access SNMP access. The device
must be sent back to the factory.
•Use encrypted services (SSH, SCP, SFTP)
•Disable unused/insecure services (FTP, Telnet)
More information is available in the DTS Security Guidelines document TE-801252
!
Caution!
!
Caution!
!
Caution!
!
Caution!

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2 Maintenance
2.1 Troubleshooting: Repairs
Please read carefully Appendix D Troubleshooting if your device does not work
properly.
If you cannot rectify the problems, contact your supplier from whom you have
purchased the device.
Any repairs must be carried out at the manufacturer’s plant.
Disconnect the power supply immediately and contact your supplier if …
•liquid has entered your device.
•the device does not properly work and you cannot rectify this problem yourself.
2.2 Cleaning
•Please make sure that the device remains clean especially in the area of the
connections, the control elements, and the display elements.
•Clean your device with a damp cloth only.
•Do not use solvents, caustic, or gaseous cleaning substances.
2.3 Disposing
Device
At the end of its lifecycle, do not dispose of your device in the regular household
rubbish. Return your device to your supplier who will dispose of it correctly.
Packaging
Your device is packaged to protect it from damages during transport.
Packaging is made of materials that can be disposed of in an environmentally friendly
manner and properly recycled.

© MOBATIME 8 / 94 801299.00
3 General Information: Introduction
3.1 Scope of Delivery
Please check your delivery for completeness and notify your supplier within 14 days
upon receipt of the shipment if it is incomplete.
The package you received contains:
•DTS 4020.timebridge
•Connector set
- 1-21) piece(s) plug 3-pole black for power supply
- 1 piece spring terminal 2-pole orange
•1 piece mounting tools with spring terminals
1) Depending on power supply option, see chapter 10 Redundant Power supply
3.2 Technical Data
See Appendix "H Technical data“.
3.3 Device Description in this Manual
This instruction manual is for the DTS 4020.timebridge.
3.4 Introduction
The DTS 4020.timebridge serves as an interface between the IEEE1588 protocol
(PTP) supplied across a packet network to traditional serial Time-of-day (ToD), 1PPS,
10MHz and IRIG B signals.
It is a PTP Slave according to IEEE 1588-2008 for the synchronization.
It is equipped with up to 2 network ports (IPv4/IPv6). LAN1 is for configuration, LAN2
for synchronization and time distribution.
NTP clients can use the DTS 4020 as a reference. NTP is available on both LAN ports
and unicast or multicast is supported.
In addition, the DTS 4020 provides one output for Time-of-Day, two configurable digital
frequency outputs and one analogue 10MHz output.
Instead of a frequency, IRIG/AFNOR is available on the analogue and digital outputs.
For alerting the DTS 4020 can send both e-mails and SNMP traps. It has also an alarm
relay contact.
Using MOBA-NMS and SNMP, the DTS 4020 can be fully operated and its
configuration and system status can be requested.

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3.5 Device types
For future use
3.6 DTS Distributed Time System
DTS (Distributed Time System) is a system developed by Moser-Baer AG to distribute
time information to decentralized master clocks, slave clock lines and time servers or
send synchronization signals to any other equipment. For communication, standard
LAN (Ethernet) is used. The DTS can be centrally operated and monitored.

© MOBATIME 10 / 94 801299.00
3.7 MOBA-NMS - Network Management System
MOBA-NMS is software used for central management and inquiry of state and alarm
information. It supports DTS devices as well as all MOBATime analog and digital
network clocks and can handle a network with more than 1000 devices. This software
provides extensive functions for the configuration, installation, back-up / recovery etc.
especially for DTS devices.
Due to the DTS concept, MOBA-NMS can be installed multiple times in one network.
With different user rights on the device and software level, the configuration abilities of
different users can be set as required.
For DTS devices, all communication is conducted over SNMP V3. The SFTP protocol
is used for broadcasting files.
Overview of MOBA-NMS functions for DTS devices and network clocks:
•automatic device scan over multicast or IP range
•device management using user-defined device groups
•intuitive user interface with input check for the device configuration
•status / alarm request and display on the device group level
•device firmware update for one or several devices (parallel)
•support for device commands, e. g. reset, restart etc.
•back-up / recovery of DTS devices
•transfer of the whole DTS configuration to another device
•user management with different access rights
•monitor for NTP and time zone packages
•editor for time zone files
•online help
More information is available in MOBA-NMS User-Manual BE-801225.

© MOBATIME 11 / 94 801299.00
4 LED displays front side
Description Color Status Description
Sync Green
Orange On On
Off
DTS 4020 is synchronized to the time source
Future option
No synchronization to the time source.
No output signals available.
Alarm Red
Orange
On
On
Off
The alarm relay signalizes an alarm
Future option
No active alarms
Power1 Green
Orange
On
On
Off
Mains or DC power supply is OK
Future option
No power supply
Power2 Green
Orange
On
On
Off
Mains or DC power supply is OK
Future option
No power supply
LAN RJ45 control lamps:
Left Green On
Off Link 100 MBit & 1 GBit No Link
Right Yellow Blinking
Off
Network activity
No activity

© MOBATIME 12 / 94 801299.00
5 Installation
5.1 Connections
The connections are specified in Appendix “A Connection diagrams“.
Only connect the designated devices to the various inputs and outputs.
5.2 Chassis Ground
In order to guarantee correct operation of the DTS 4020 the chassis must be
connected to an earth ground. The earth ground connection is specified in Appendix “A
Connection diagrams”.
5.3 Boot procedure of the DTS 4020.timebridge
The normal booting time of the DTS 4020 is approx. 180 sec. with pre-set IP or with
DHCP. The booting procedure of the operating system is displayed on the serial
console.
5.4 Initial configuration
Per default, all LAN interface for configuration are preconfigured with DHCP on.
If no DHCP server is available in the network, initial configuration has to be done via
serial terminal.
Important:
The “Micro USB” provides an USB-To-Serial interface
Depending on your operating system you
need to install the VCP-Driver
(Virtual
-Com-Port-Driver)from https://www.ftdichip.com/Drivers/VCP.htm
5.5 Firmware
It is recommended to install the current firmware on your device prior to the definite
commissioning. The current firmware can be found under www.mobatime.com in the
Customer Aera Login required.

© MOBATIME 13 / 94 801299.00
6 Operation
6.1 General
Operation occurs via a terminal menu or SNMP. SNMP operation is explained in
chapter “9 SNMP“. Operation with the terminal menu takes place either via Telnet or
SSH. After a connection has been set up, the login screen is displayed:
DTS4020 login:
To start the menu, you must be logged in as user dts. The standard password is dts.
(Changing the password

see chapter “6.5.21 General settings“).
Only one menu can be open at any time. The first menu started has priority. The menu
is automatically closed after 15 min. without operation, and any open connection via
Telnet or SSH is interrupted.
Use e.g. Freeware software Putty as a serial terminal.
6.1.1 Telnet
Windows: e.g. with Putty
Username: dts
Password: dts
Linux: Start console and enter “telnet [IP-address]
6.1.2 SSH
Windows : e.g. with Putty
Username: dts
Password: dts
Linux: Start console and enter “ssh dts@[IP address]“

© MOBATIME 14 / 94 801299.00
6.1.3 Menu structure
DTS 4020.timebridge Moser-Baer AG
====================================
TIME SOURCE
1 Source configuration
2 Alarm delay fail, highest source prio. 1min
3DTS stratum (0=auto, 1-15=fix) 0
4Stratum limit for synchalarm 12
5Stratum TO (1-16) DCF/GPS fail 999h
6 Stratum change source fail default
7Max. offset for time ok 500ns
8Alarm big offset to source 1000ns
Unknown command: “100”
98 Return and save
99 Return and discard changes
Enter desired menu number>
---------------AN ALARM IS ACTIVE!---------------
The current menu is always displayed in the menu title. The menu options show all
the selectable menu functions. Provided the menu item is not a further menu, the set
parameters are displayed. Error messages (e.g. invalid entries) or additional
information to the selected menu items are displayed in the response line. The input
line shows the current input values or options possible. The status line only appears,
when an information has to be displayed, e.g. "An alarm is active".
All entries must be completed with ENTER (Return) (e.g. also ESC).
The menu window can always be exited with Ctrl-C (incl. termination of the Telnet and
SSH connection).
The desired menu can be selected with the relevant number.
The numbers 98 and 99 are always used identically:
•With 98, the settings entered are saved and the menu exited. Depending on the
change, the DTS 4020, or only partial functions, are rebooted.
•With 99, all changes to the menu are reversed and the menu exited.
In the menus where data cannot be saved (command 98), the menu is only exited
with 99, but any changes are not saved.
The current menu is updated, without any further entry, with ENTER.
menu title
menu options
input line (prompt)
response line
parameters
status line

© MOBATIME 15 / 94 801299.00
6.2 MOBA-NMS operation
For the configuration of DTS devices via GUI, MOBA-NMS (see chapter „3.7 MOBA-
NMS - Network Management System“) can be used. All configuration possibilities are
subordinated in different configuration pages (called „tabs“). These tabs are connected
to the terminal menu and designated accordingly. Example: The terminal menu
„Configuration Alarms“ can be found in MOBA-NMS under the tab „Alarms“.
Configuration example of a DTS 4020.timebridge:
For further details on the general MOBA-NMS operation, check the integrated online
help (menu „Help Show help“).
Important:
To enable the communication between MOBA-NMS and the DTS devices,
SNMP must
be activated! Set terminal menu „Configuration SNMP 
SNMP Mode“ to „on“. SNMP is activ
ated by default.
configuration pages
(tabs)

© MOBATIME 16 / 94 801299.00
6.3 Main menu
DTS 4020.timebridge Moser-Baer AG
====================================
MAIN SELECTION
1 Status
(Actual alarms and history, timesource state, version
2 Configuration
(Configuration of the outputs, timesources, alarms ...)
3 Maintenance
(Update, backup ...)
99 Exit DTS menu
Enter desired menu number>
Menus:
Status: Display of various information regarding operation and environment
See chapter “6.4 Status menu“
Configuration: Configuration of the DTS 4020
See chapter “6.5 Configuration menu “
Maintenance: Software update, backup and restore
See chapter “6.6 Maintenance menu“
6.4 Status menu
The status menu consists of 2 pages.
Status menu page 1:
DTS 4020.timebridge Moser-Baer AG
====================================
CLOCK STATE Page 1/2
1 Alarm state
2 Alarm history
3 Time state
4 Time source
5 Time source info
6 Info network config.
7 Internal state
8 Product information
9 Versions of the software
Press enter for next part, 99 to leave>
Path: 1 Status
The sub-menus show various information’s about the current operating status:
1. Requesting alarm status, display of all the DTS 4020 active errors.
Display of the DTS 4020 alarms (64) on 4 pages. The ALARM DETAIL menu
pages can be scrolled through with ENTER. Active alarms are displayed with a *.
The ALARM DETAIL menu page can be exited with 99. All DTS 4020 active
alarms are displayed, masking (e-mail, traps and relay) only occurs later.

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2. Alarm history display.
Display of the DTS 4020 alarm record, newest alarm first. The ALARM RECORD
menu pages can be scrolled through with ENTER. The ALARM RECORD menu
page can be exited with ESC.
Max. length of error report: 240 messages.
3. Current time and status display. See chapter "11 Time status information"
4. Time source information display. See chapter "6.4.2 Time source information"
5. PTP Information
6. Current network configuration display. With ENTER, a second page can be
displayed with network information.
7. DTS 4020 system information display (internal status, regulation voltage of the
oscillator..). This information is for support purposes only.
8. Product information like serial number, firmware version etc.
9. All respective software versions of the DTS 4020 components.
Status menu page 2:
DTS 4020.timebridge Moser-Baer AG
====================================
CLOCK STATE Page 2/2
11 NTP peer state (ntpq -np)
12 NTP state (ntpq -c rl)
13 Power
14 Network Diagnostic
Press enter for next part, 99 to leave>
Path: 1 Status

[Enter]
11. Display of information with regard to the internal state of the NTP server.
12. Shows state of the time source for NTP
13. Power supply information (voltage) display.
14. Network diagnostic for ping and routing table information.
15. Display information of all possible PTP connections

© MOBATIME 18 / 94 801299.00
6.4.1 Time status information
DTS 4020.timebridge Moser-Baer AG
====================================
TIME STATUS INFORMATION PAGE 1/2
Internal time of the DTS (UTC)10:11:47 26.01.19
Stratum of DTS 2
TAI Offset 37
Time source PTP
Last time information from source 09:11:44 26.01.15 UTC
Offset to source 10ns
Jitter of the source 1ns
Quality of the source 100%
99 Return
Enter desired menu number>
Path: 1 Status

3 Time, time state
- Internal time of the DTS: local time
- Stratum of the DTS: current stratum
- TAI Offset current TAI offset in seconds (used for PTP)
- Time source: current time source
- Last time info. from source: time of the last information from source
- Offset to source: offset to source (source – system time)
- Jitter of the source: current jitter
- Quality of the source: quality of the source
DTS 4020.timebridge Moser-Baer AG
====================================
TIME STATUS INFORMATION PAGE 2/2
Leap second information
Status No leap second detected
Date of the next leap second None
Adjust direction None
Leap second source None
Date of the last implemented leap second None
Oscillator locked state locked
99 Return
Enter desired menu number>
Path: 1 Status

3 Time, time state

enter
- Leap second information: Shows if a leap second is detected and when
one is detected on which date it will be and in
which direction.
Oscillator locked state: Not used

© MOBATIME 19 / 94 801299.00
MOBA-NMS: Tab: Overview, Frame:Time, time state

© MOBATIME 20 / 94 801299.00
6.4.2 Time source information
All sources overview
DTS 4020.timebridge Moser-Baer AG
====================================
TIMESOURCE INFORMATION PAGE 1/8
Source PTP FREQ
Configured yes yes no no
Locked yes yes no no
Priority 1 2 00
Offset [s] 0000
Offset [ns] 512 0 0
Stability [ppb] 1 600
Rating 0122
99 Return
Enter desired menu number>
Path: 1 Status

4 Local source
Source information (PTP, FREQ)
DTS 4020.timebridge Moser-Baer AG
====================================
TIMESOURCE INFORMATION PTP PAGE 2/3
Priority Priority 1
State: Reachable / Locked yes / locked
Last time received 09:12:00 08.11.18 (UTC)
Last measured offset 0ns
Stability (Deviation) 12ppb
Leap status No leap second detected
Date of next leap second / Adj. direction None / None
99 Return
Enter desired menu number>
Path: 1 Status

4 Local source

enter (1x – 2x)
For all sources the same information is shown
- Priority: Current source priority
- State: Reachable / Locked A source is reachable if it provides time to DTS
on a regular basis. A source is locked, if the time
provided is stable.
- Last time received: last time received from source
- Last measured offset last measured offset with source info and type of
measurement (only needed for Moser-Baer
support).
- Stability (Deviation) Estimation of the current stability in parts-per-
billion
-Leap second status: Shows the leap second if it is detected by this
source.