EKOS EKOSync 1588A User manual

EKOSync 1588A
PTP / NTP TIME SERVER
USER MANUAL
Document Revision No: 1.1

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EKOSync 1588A User Manual rev 1.1 August 2021
Safety
For your safety, the following general safety precautions must be observed during all
phases of operation of this instrument.
WARNING! THIS DEVICE MUST BE EARTHED
Do not use this equipment in a manner not specified by the manufacturer. The protective features
of this product may be impaired. It could cause unavoidable damage to the equipment, personal
injury and/or death.
Reviewing the complete documentation before installing or operating the instrument is important.
WARNING! HAZARDOUS VOLTAGES CAN CAUSE SHOCK, BURNS AND DEATH.
The power plug shall be disconnected from all voltage sources before it is opened for any
adjustment, replacement, maintenance or repair.
Any adjustment, maintenance and repair of the opened instrument under voltage shall be avoided
and, if unavoidable, shall be carried out only by a qualified person who is aware of the general device
test practices.
All recommended equipments that should be earthed. Any interruption of the mains earth
conductor inside or outside the instrument will make the instrument dangerous.
Do not install substitute parts or perform any unauthorized modification to the product.
Unless otherwise specified in the documentation, there are no user-serviceable parts inside this
instrument.
Instruments that appear damaged or defective should be secured against unintended operation
until they can be repaired by qualified service personnel.
This instrument is intended for use in dry, indoor locations only.
Do not wet the instrument when cleaning it.
Safety Symbols
These symbols, which have these meanings, may be marked on this instrument.
EARTH (GROUND) TERMINAL

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Table of Contents
I. FEATURES & SPECIFICATIONS………………………………………………………………………………………...4
1Description……………………………………………………………………………..4
2Features………………………………………………………………………………….4
3Specifications………………………………………………………………………….4
Electrical……………………………………………………………………………………….4
Networking…………………………………………………………………………………..5
Environmental Specifications……………………………………………………….5
Mechanical Specifications…………………………………………………………….5
Antenna Port Specifications………………………………………………………….5

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II. OPERATION
DESCRIPTIONS……………………………………………………………………………………………….………………….6
1Precise Time Synchronization……………………………………………………….6
The IRIG-B Time Code Standard………………………………………………………………6
Network Time Protocol / Simple Network Time Protocol……………………….7
SNTP………………………………………………………………………………………………………7
NTP / SNTP in the EKOSync 1588A…………………………………………………………...8
FREQ……………………………………………………………………………………………………...8
ALARM RELAY………………………………………………………………………………………..8
2IEEE 1588 / PTP / C37.238………………………………………………………9
III. INSTALLATION…………………………………………………………………………………………………………………….11
Device Hardware…………………………………………………………………………..11
Hardware Installation……………………………………………………………………13
IV. CONFIGURATION &
SETTINGS…………………………………………………………………………………………………………………………14
1Front Panel Overview……………………………………………………….….14
2Accessing the PTP/NTP TIME SERVER…………………………………..17

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EKOSync 1588A PTP TIME SERVER
I. FEATURES & SPECIFICATIONS
1Description
EKOSync 1588A PTP Time Server provides sub-microsecond accuracy time information
for synchronizing energy distribution subsystem intelligent electronic devices, and proceeding
according to IEEE 1588 v2 time protocol. Product includes adjustable hold-over times for
discontinuities with GPS communication, and compensation for antenna reception distortions.
2Features
DC IRIG-B (Unmodulated, DCLS - C37.118, not ready in this version)
TCP/IP remote M&C management option
Synchronized TOD (Time of Day) and PPS (Pulse per second) outputs
User defined 10MHz/5MHz frequency output
TCP/IP configuration option
NTP/ SNTP (IEC 61850)
IEEE 1588 PTP Server
18-75VDC or 90-240VAC (DC) Isolated power supply
Password protection and user authentication
3Specifications
Electrical:
Input
Power Supply
Voltage: 18 to 75 V DC
90 to 240VAC (DC)
Power consumption: 10W max
Ethernet (RJ45 UTP) 10/100/1000 Mbps
Isolation
Power to GPS input 3 kV
Power to I/O 3 kV
Outputs
Relay output 250V 2A
4 TTL outputs Time codes or pulses or user defined
Electrical specification:
TTL/CMOS compatible 0-5 V, 150 mA
sink/source

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Timing accuracy: ≤50 ns to UTC
Networking:
GENERAL
DHCP: Auto-configuration with fall back to ARP
tested link-local address
VLAN: Packet tagging
PTP (IEEE 1588 V2)
General: One-step or two-step operation
End-to-end or peer-to-peer delay calculations
Layer 2 (Ethernet) or Layer 3 (UDP) transport
Slave only mode
Default Profile support
Power Profile support: C37.238
TLV support: C37.238 offset from TAI time base used by PTP
Alternate Time Offset TLV support: with automatic or manual offset
NTP
General: Stratum-1 NTP & SNTP time server
Multicast & Broadcast server capability
Optional MD5 authentication
Environmental Specifications:
Operating and Storage conditions
Operating Temperature -20° to 60°C (-4 to 140°F) according to
UL 60950
-20°to 70°C (-4 to 158°F) according to
IEC 60065
Storage Temperature -20°to 70°C (-4 to 158°F)
Operating Ambient Humidity 3% to 97% (non-condensing conditions)
Altitude 3000m (9842 ft)
Mechanical Specifications:
Dimensions (H x W x D) 44 x 439 x 247,5 mm
Weight 3.920 kg
Antenna Port Specifications:
Voltage 3.3 VDC
Current 100 mA (max)

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Impedance 50 Ω
II. OPERATION DESCRIPTIONS
1Precise Time Synchronization
Precision Time Protocol (PTP), included in IEEE standard 1588 was originally designed to provide
timing for critical industrial automation. PTP identifies two types of clocks, masters and slaves. A clock
in a terminating device is known as an ordinary clock, a clock in a transmission component like an
Ethernet Switch as a boundary clock. A master which is controlled ideally by a radio clock or a GPS
receiver, synchronizes the slaves connected to it respectively.
PTP time server, namely GPS Clock, which provides synchronization in PTP (IEEE 1588) protocol on
Ethernet network by using time from GNSS satellites utilizes existing data network so that an
installation of a separate timing network is eliminated. Its 25ns accuracy and redundancy
mechanisms are also advantages of new generation synchronization system.
Control, protection and measurement devices in modern electric grids need correct time for
synchronous operation. To identify the sequence of events in case of unexpected outage, to
manage the grid synchronously and to be able to make the measurements in the required accuracy
a modern synchronization protocol is needed.
The IRIG-B Time Code Standard
IRIG‐B is the industry standard for GPS time synchronization. The IRIG time codes were originally
developed by the Inter-Range Instrumentation Group (IRIG), part of the Range Commanders
Council (RCC) of the US Army. IRIG time code B is widely used in the electrical power industry.
IRIG-B refers to a serial time code format. The IRIG-B time code consists of 100 bits produced every
second, 74 bits of which contain various time, date, time changes and time quality information of
the time signal. IRIG-B sends Day of Year, Hour, Minute and Second data on a 1KHz carrier, with an
update rate of one second. IRIG-B DCLS (DC level shift) is IRIG-B without the 1KHz carrier.
There are three methods of communicating analogue pulses in the IRIG Standard:
• Modulated : amplitude-modulated, sine wave carrier
• Unmodulated :DC level shift, no carrier signal
• Modified Manchester : amplitude-modulated, square wave carrier
Three types of coded expressions are used in the IRIG standard:
Binary Coded Decimal time-of-year (BCDTOY) and year (BCDYEAR)
Control Functions (CF), set of bits reserved for user applications
Straight Binary Seconds (SBS) time-of-day (0 to 86400 seconds)

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A comparison of IRIG-B coding methods is given in the figure below.
Network Time Protocol / Simple Network Time Protocol
Network Time Protocol (NTP) has been the traditional way to synchronization time over
Ethernet networks. NTP allows time synchronization up to 100 milliseconds. The IEEE 1588 PTP
is required to achieve tighter synchronization.
There is NTP led on front panel. When the NTP is enable, the led is ON. To enable the NTP
server of the PTP/NTP Time Server check the Enable checkbox in the NTP configuration page.
PTP is basically a faster version of NTP. IEEE 1588 is designed for local systems requiring
very high accuracies beyond those attainable using NTP, which is sufficient to transfer data
across networks at speeds of up to 10 Mbps. As data rates have increased, the need for
synchronised transmission and reception have increased with it. At speeds of 1 Gbps and above,
PTP is necessary.
With the new software update the local time in accordance with timezone and DST
configuration is sent through NTP protocol. Please note that NTP only sends local time.
SNTP
A less complex implementation of NTP, using the same protocol but without requiring the
storage of state over extended periods of time, is known as the Simple Network Time Protocol
(SNTP). It is used in some embedded devices and in applications where high accuracy timing is
not required.

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NTP / SNTP in the EKOSync 1588A
The EKOSync 1588A can act as an NTP or SNTP server, and is intended to be an NTP time server.
The EKOSync 1588A synchronizes to GPS to provide accurate timing signals, and NTP time signals
are published through the clock Ethernet port. Please note that NTP/SNTP only sends local time.
FREQ
The EKOSync 1588A has one Frequency out port which produces 5-10-20-25MHz.
ALARM RELAY
Connect the Sync indication relay to the alarm circuit if required.
(C = Common, NO = Normally Open, NC = Normally Closed)
Example;
The relay alarms when the antenna problems or poor sky view.

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IEEE 1588 / PTP / C37.238
The IEEE 1588 precision time protocol (PTP) provides a standard method to synchronize devices with
sub microsecond precision over a local area network (LAN) [6]. The protocol synchronizes slave clocks
to a master clock ensuring that events and timestamps in all devices use the same time base. IEEE 1588A
protocol uses the Best Master Clock algorithm to automatically determine which clock in the network is
the most precise. It becomes the master clock that is a GPS disciplined time reference. All other clocks
become slaves (e.g. a IEDs) and synchronize their clocks with the master. IEEE 1588 defines one-step
and two-step clock operations. One-step clock updates accurate timestamp in synch message but two-
step clock sends accurate timestamp in a follow up message. One step clock is recommended to use
because this eliminates the need to read the transmit timestamp over MDIO and also eliminates the
need to send a follow up message. Figure 1 shows an one step clock synchronization. The
synchronization of the clocks is achieved using a series of message packets between master and slaves.
There are three message types - Sync, Delay Request and Delay Response.
One-step clock synchronization
The master stamps the time (t1) on the Sync message that leaves the master. The message arrives
at slave clock at t2 and sends a Delay-Req message at time (t3) to the master, which is received
by the master clock at a later time, t4. The master then sends a packet containing t4 to the slave.
The slave has all the information needed to calculate the slave offset. In this way the slave use
this equations [t2 = t1 + delay + slaveoffset (1) and t4 = t3 + delay + slaveoffset (2)] to obtain
following equation:
Slaveoffset = [(t4-t3) –(t2-t1)] / 2 (3)
Now, using this equation the slave arranges its time clock. This equation (3) can be only used if
the delays are equal to each other between t1 to t2 delay and t3 to t4 delay.
This measurement is repeated every second between the master clock and the slave clock and the
synchronization accuracy can be reduced to approximately 100 ns.

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IEEE 1588 synchronization network
Grandmaster Clock
The root timing reference is called the grandmaster. The grandmaster transmits
synchronization information to the clocks residing on its network segment. A grandmaster clock
is the highest-ranking clock within its PTP subdomain and is the primary reference source for all
other PTP elements.In a PTP network a grandmaster is the node that defines the correct time.
Ordinary Clock
An ordinary clock is a PTP clock with a single PTP port. It could be a master clock (grandmaster)
or a slave clock. Ordinary clocks are the most common device within a PTP network.
Boundary Clock
A boundary clock is a device between PTP grandmaster and PTP slave clients. A boundary clock
has multiple network connections and can act as a source (master) and a destination (slave or
client) for synchronization messages. The boundary clock intercepts and processes all PTP
messages and passes all other traffic.
Transparent Clocks
Transparent clocks measure and adjust for packet delay. The transparent clock computes the
variable delay as the PTP packets pass through the switch. There are two types of transparent
clocks, end-to-end and peer-to-peer. End-to-end transparent clocks update the time interval
field for the delay associated. However peer-to-peer transparent clocks measure the line delay
associated. Transparent clocks improve synchronization between the master and slave clocks
and ensure that the master and slave clocks are not impacted by the effects of packet delay
variation.

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III. INSTALLATION
1Device Hardware
Front Panel View
Rear Panel View

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Mechanical Sizes

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Hardware Installation
1. Install the antenna in a location with a clear sky view.
2. Install the EKOSync 1588A in the desired location and connect to the antenna.
3. Connect the EKOSync 1588A to the network switch.
4. Connect to power, ensuring the correct voltage (18 - 75VDC or 90-240VAC (DC)) is used.
5. Connect the Sync indication relay to the alarm circuit if required.
(C = Common, NO = Normally Open, NC = Normally Closed)
6. Once the EKOSync 1588A is installed and configured, connect the clock outputs to your
devices.
–An RG58 cable is recommended to connect devices to the output ports.
–A termination resistor of 120 Ω can be added to the end of a TTL run to achieve good
impedance matching.

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IV. CONFIGURATION & SETTINGS
1 Front Panel Overview
This section explains use of the front panel.
LED Indicators
Front panel of the EKOSync 1588A contains six LEDs:
Label
Off
Flashing
On
PWR
Not powered
-
Powered
PTP
Disable
Enable
NTP
Disable
Enable
TP
Disable
Normal Operation
PTP Disable
ETH1&ETH2
10Mbps
100Mbps
1000Mbps
SPD
on
off
on
LNK
on
on
Off
Menu Architecture
1 -LANGUAGE
1 -ENGLISH
2 -FRENCH
3 -TURKISH
Choose your language in this part.
2-GPS CONFG.
1 -QUALITY PARAMTRS
2 -BACK
3 -MAIN
3 -SYNC CONFG.
1 -SYNCH1-SYNCH3 → 1 –PPS→1 –PULSE PERIOD
1- 1s
2- 60s

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3- 3600s
2 –PULSE DURATION
1 -100 ms
2 -200 ms
3 -500 ms
3 –EDGE MODE
1 –RISING
2 –FALLING
4 –BACK
5 –MAIN
2 –FREQ →1 -5 MHz
2 -10 MHz
3 -20 MHz
4 -25 MHz
5 -DISABLE
3 –IRIG-B →1 –IRIG-B 003
2 –IRIG-B 002
3 –DISABLE
4–BACK
2 -SYNCH4 → 1 –TOD PORT OPT. → 1 –BAUD RATE
1 -4800
2 -9600
2 –PARITY
3 –STOP BITS
4 –DATA BITS
5 –BACK
6 –MAIN
2 –PPS/TOD MODE
3 –ENABLE
4 –ASCII PROTOCOL → 1 –NMEA
2 –ASCII
3 –CM
5 -BACK
6 -MAIN
3 –SYNC MODE
4 -BACK
5 -MAIN
3-LOCAL TIME OFFS.
Local time at various locations around the world are explained at the end of the pages.
1 –UTC
2 –LOCAL → 1 –MIT 14 –EAT
2 –HST 15 –MET
3 –AST 16 –NET
4 –PST 17 –PLT

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5 –MST, PNT 18 –IST
6 –CST 19 –BST
7 –EST, IET 20 –VST
8 –PRT 21 –CTT
9 –CNT 22 –JST
10 –AGT, BET 23 –ACT
11 –UTC, GMT, WET 24 –AET
12 –ECT 25 –SST
13 –EET, CAT, ART 26 –NST
5 -LAN CONFG.
IP: 168. 1. 103
Enable Static IP
BACK
MAIN
6 -PRODUCT RELEASE
RELEASE
1 –R1. 0/1.0
7 -EXIT
Returns the main menu.
8 –RESET
Reset to Default

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2Accessing the PTP/NTP TIME SERVER
Make proper IP settings on PC and enter the device IP address 169.254.100.115:7070 on web browser.
The below picture will be seen;
Username :
admin
Password :
admin
Once accessed correctly, the following main screen will appear:

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General Commands:
Clear statistics: Clear all of statistics.
Reboot: It restarts the TIME SERVER.
Reconfig: This menu button is using to upload existing configuration to management pc or to
download already saved configuration to the device.
To download the current configuration have to choose device to generate current configuration
file than click OK button below “Download the Configuration” thus existed configuration
setting file of the device could be saved to management PC.
To upload saved configuration to the device, have to click “Choose File” to select the
configuration file to upload and “Submit” button subsequently to upload desired configuration.

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Reflash: This option allows a firmware upgrade in the TIME SERVER.
There are for tabs on the main screen.
From Home tab;
General information about time server are seen. On the identification subsection, hostname,
location, contact and model of the PTP/NTP Time Server are provided. Second is the Access
Control subsection consists of admin and guest user’s information and could be setted its
passwords on this section. Third is Time Settings subsection Time Zone and DST (daylight
saving time) options could be determined here. Next LCD Backlight could be enabled to
automatic reclosing of LCD backlight after 5 min idle time.