TEKRON PTP Translator User Manual

TEKRON PTP Translator

PTP Translator

User Manual

Contents

• Introduction
• Product Overview
• LED Indicators
• Inputs and Outputs

Introduction

Welcome to the PTP Translator user manual! This document contains everything you need to know about the key features,hardware, and installation process of the PTP Translator.

Product Overview

The PTP Translator is a device that provides synchronization and translation capabilities. It allows synchronization of outputs to UTC time and features various inputs and outputs for flexible connectivity. The device can be configured over a LAN (Local Area Network) and supports NTP / SNTP License.

LED Indicators

The top of the PTP Translator features two LED indicators. The SYN LED shows the synchronization status of the unit, while the ALM LED shows the alarm status of the unit. Outputs are synchronized to UTC time only when the SYN LED is fully illuminated.

timer is running) or is operating in the tuning state (time server
is gaining synchronization).
SYN LED| Fast Flash (5x flashes per second)
| The PTP Translator is not synchronized (out of sync and not in
holdover).
SYN LED| On
| The PTP Translator is synchronized.
ALM LED| Meaning
---|---
ALM LED| Off
| The PTP Translator is operating normally and has no
alarms.
ALM LED| Fast Flash
| At least one alarm is active. Refer to the alarm window in the
Clock tab of the Configuration Tool to find the name of the active
alarm(s). Refer to the Alarm Specification table below for the
details on each alarm by name.
Alarm Name

No Sync
Holdover
Factory Reset Armed
ADMIN/ETH1 Address Fault
Sync Forced

Inputs and Outputs

The PTP Translator is equipped with various inputs and outputs for flexible connectivity.

ETH: Ethernet Port (ST Fiber / RJ-45)

PTP Translator units are fitted with either an RJ-45 10/100 Mbps Ethernet interface or an ST multi-mode Fiber 100BASE-FX Ethernet interface. The unit can be configured over the LAN (Local Area Network) and can be loaded with an NTP / SNTP License.

Next to the Ethernet connector are two LEDs: The green LNK LED (above), and the yellow ACT LED (below). The LNK LED will be on when the unit is connected to a valid Ethernet port whilst the ACT LED will be on/flashing when there is activity on either the transmit or receive pair on the Ethernet port.

TX: Fiber Output
This port is for fiber output.

TTL: TTL Output
This port is a programmable TTL level output that may be configured to output in either inverted or non-inverted polarity.

ALM: Alarm Output
The alarm output is a type A (normally open) dry contact type.
Additionally, it is a high voltage isolated contact capable of switching up to 300 V at 100 mA.

Introduction

Welcome to the PTP Translator user manual! This document contains everything you need to know about the key features, hardware, and installation process of the PTP Translator.

Product Overview
The PTP Translator converts IEEE 1588-2008 (PTPv2) messages into legacy time codes including IRIG-B, DCF77, user defined pulses and serial strings, as well as NTP server messages. The PTP Translator also supports SNTP client.
The PTP Translator clips onto a standard DIN rail. Its rugged compact design is suitable for noisy electrical environments, while built in electrical isolation combined with strong push pull drives on outputs simplifying wiring schemes and enhancing reliability. Refer to Figure 1.

LED Indicators

The top of the PTP Translator features two LED indicators. The SYN LED shows synchronization status of the unit, while the ALM LED shows the alarm status of the unit.
Outputs are synchronized to UTC time only when the SYN LED is fully illuminated.

Table 1, Table 2 and Table 3 below provide information regarding the interpretation of the LEDs.

Table 1 – SYN LED Functionality

Slow Flash (1x flash per

second)

| The PTP Translator is operating in the “holdover” state (holdover timer is running) or is operating in the “tuning” state (time server is gaining synchronization).
Fast Flash

(5x flashes per second)

|

The PTP Translator is not synchronized (out of sync and not in holdover).

On| The PTP Translator is synchronized.

Table 2 – ALM LED Functi0nality

Fast Flash

| At least one alarm is active. Refer to the alarm window in the Clock tab of the Configuration Tool to find the name of the active alarm(s). Refer to the Alarm Specification table below for

the details on each alarm by name.

Table 3 – Alarm Specification

the holdover period has expired and/or the maximum inaccuracy threshold has been reached.
Holdover| The PTP Translator has lost synchronization to an external time source and is now in holdover.
Factory Reset Armed| This alarm is generated if the Forgotten Password Reset (Factory Reset Process) is enabled

and has been initiated by the user.

ADMIN/ETH1

Address Fault

| This alarm comes up when the DHCP server is unavailable or when the IP address is assigned

to some other node in the network and cannot be assigned to the PTP Translator’s Ethernet port. Under such situations the Ethernet port defaults to a link local address.

Sync Forced| This alarm is generated when the “Never leave Sync (Test Mode)” option has been selected.

Inputs and Outputs

ETH: Ethernet Port (ST Fiber / RJ-45)
PTP Translator units are fitted with either an RJ-45 10/100 Mbps Ethernet interface or an ST multi-mode Fiber 100BASE-FX Ethernet interface. The unit can be configured over the LAN (Local Area Network) and can be loaded with an NTP / SNTP License.
Next to the Ethernet connector are two LEDs: The green “LNK” LED (above), and the yellow “ACT” LED (below). The LNK LED will be on when the unit is connected to a valid Ethernet port whilst the ACT LED will be on/flashing when there is activity on either the transmit or receive pair on the Ethernet port.

TX: Fiber Output
This port transmits an IRIG-B (B00x or B22x), programmable pulse or DCF77 signal over fiber, that may be configured to output in either inverted or non- inverted polarity. The fiber transmitter is compatible with 50/125 μm, 62.5/125 μm and 100/140 μm multimode glass fiber.

TTL: TTL Output
The TTL output is a high drive, non-isolated TTL level driver which can be configured using Tekron’s Configuration Tool. This port transmits an IRIG-B (B00x or B22x), programmable pulse, or DCF77 signal using 0 – 5 Vdc TTL level on pins “+” and “-” of the screw terminal connector. The default output is an un-modulated IRIG-B signal (IRIG-B004 with C37.118.1 extensions). It can be used as the master source signal to drive one or many slave devices. The IRIG-B timing pulses (both leading and trailing edges) from this port is typically to within 100 ns of UTC.

This port is a programmable TTL level output that may be configured to output in either inverted or non-inverted polarity:

• A configurable number of pulses per second, minute, hour, day with adjustable pulse-width and offset.
• IRIG-B time code (Un-modulated DCLS or Modified Manchester) with option C37.118.1 or AFNOR extensions.
• Simulated DCF77 receiver time code.

ALM: Alarm Output
The alarm output is a type “A” (normally open) dry contact type. Additionally, it is a high voltage isolated contact capable of switching up to 300 V at 100 mA.

Note: The “Normally-Open” (NO) descriptor refers to the de-energized state of the relay.
The PTP Translator operates with the alarm relays energized during normal operation, and de-energized in the alarm state. It follows that, in the event of all power to the PTP Translator being lost, the alarm relay defaults to the “alarm” state (open contact). The “+” and “-” symbols are included for reference purposes only, as the alarm contacts are not polarized.

The “ALM” output is a synchronization fail alarm. This alarm is active (contact open) when the unit is not synchronized and is not in the holdover state.

OPT: Optional Output
The PTP Translator has a slot for one IO card to allow a variety of user interfaces. Each card is limited to one additional port with at least 3 kV isolation from the rest of the system to avoid current loops. Refer to Table 5 for the list of orderable options.

Software

Configuration Tool
The PTP Translator can be configured via Ethernet. The configuration tool can be downloaded from the Tekron Support website: www.support.tekon.com. By default, the unit is shipped with DHCP enabled for automatic IP address assignment, with a fall back to link local addressing (169.254.xxx.xxx) if no DHCP server is present.

• Default Username: admin
• Default Password: Password

Note: The user is required to change the default password on first login.

Installation

Identification
Each PTP Translator unit is shipped with an identification label on the side of the case. The label provides details of the optional output (if any) and power supply fitted to the unit, and the unit’s serial number.
Check the identification label on the side of the unit to ensure that the correct order code and voltage range has been supplied before proceeding with the installation.
The label on the side of PTP Translator contains the voltage range: Do not apply power outside of this range!

Location
The unit is intended for installation in restricted access areas. A restricted access area can be accessed only using a lock and key or other means of security. Installation is to be done by suitably qualified personnel.

Power Supply
DC power should be applied to the ‘+’ and ‘-‘ screw clamp terminals above the “PWR” input. The DC polarity is not critical. As shown in Figure 2, the input voltage range can be found on the side of the unit, above the power input screw clamp terminals.

Note: The Power supply has polarity protection built in to prevent damage.
The input voltage range is marked on the product label on the side of the unit, and on a label above the “+’ and ‘-“ screw clamp terminals on the power input. Do not apply voltage outside the range noted.
The label on the side of TTM 01-G indicates the type of output Option Card fitted: Do not apply voltages to output only interfaces!

Hazardous Voltage
Up to 300 V may be present at the power input port “PWR”. Up to 275 V may be present at the alarm relay port “ALM” (in Figure 3). These voltages are supplied to the unit only, and not generated by the unit. However, the installer must exercise care in wiring the screw clamps to ensure bare copper is not accessible.

Earthing
The GND connection is located next to the power supply input terminals (highlighted in Figure 3). This must be connected to earth for full protection of the PTP Translator.
The unit must be safety earthed whenever it is powered on, using the earth terminal as pictured in Figure 3. The cable cross section must be equal to or greater than 0.2 mm2 (30 AWG).

Mounting the PTP Translator
The PTP Translator is designed to be mounted to a standard ‘Top Hat’ din rail mount using the supplied clips on the base (See Figure 3). The clips can also be used to screw mount the unit by extending them beyond the case edge.

Connecting the PTP Translator
The PTP Translator has a RJ-45/ 100Base FX connector and ST Fiber output on the top, and a row of rising clamp screw terminals on the bottom. Any connection not required may be left unterminated. The screw terminals are designed for the following cables:

• 0.2 – 4.0mm² (30 – 12 AWG) solid cable
• 0.2 – 2.5mm² (30 – 14 AWG) stranded cable

The Fiber PTP Translator has a dual ST Fiber connector for the Ethernet and is labeled ETH on the case whereas the IRIG-B fiber out is simply labeled TX.

The connections from left to right along the bottom are:

• Optional output (OPT) ‘+’ and ‘-’
• Alarm (ALM) ‘+’ and ‘-’
• TTL ‘+’ and ‘-’
• Ground
• Power Supply Negative
• Power Supply Positive

If the optional output isn’t fitted, then the unused terminals are covered.

Factory Reset
The PTP Translator features the ability to reset to factory default settings if the administrator password is forgotten, or if the time server is rendered unreachable on the network due to incorrect settings, provided that physical access to the unit is available.
This feature is disabled by default to maximize security and must be enabled via the Tekron Configuration Tool before it can be used. When disabled, there is no method to gain full access to the unit without the administrator password, and if the administrator password is forgotten, the unit must be returned to Tekron for reprogramming at the customer’s expense.

This feature may be permanently disabled by Tekron on request.
For further details on this feature, see the Configuration Tool Manual, which can be downloaded from the Tekron website at support.tekron.com

Factory Hardware Options

Power Supply Options
There are three different power supply options available for the PTP Translator, detailed in Table 4. Low, medium, or high voltage power supplies are available and feature similar maximum output ratings but different levels of isolation.

Table 4 – PTP Translator Orderable Power Supply Modules

Power

Supply

| Input Voltage Ratings| Maximum Power Rating| Isolation
---|---|---|---
Low| 14 – 36 Vdc.| 4 W| 1.6 kV
Medium| 20 – 75 Vdc.| 4 W| 1.6 kV
High| 90 – 300 Vdc.| 4 W| 3.75 kV

Optional Output Cards
The PTP Translator has a slot for one I/O card, to allow a variety of user interfaces. Each card is limited to one additional port with at least 3 kV isolation from the rest of the system to avoid current loops.

Table 5 below shows the orderable options:

Table 5 – PTP Translator Orderable Interface Modules

output.
Serial| RS232 level (9 V, 10 mA) output supporting serial strings.
AM IRIG-B| Amplitude Modulated (AM) IRIG-B (B12x) signal, typically 8 V with 3:1 mark space ratio.

Output Impedance 120 Ω. Requires a 100 – 180 Ω terminator.

Isolation and Protection

The TTL output features an earthed, non-isolated driver and is designed for connection within the same rack. Since it is the only output with an earth reference, it is isolated from the power supply via the power supply isolation and from all other IO by their isolation. All the other outputs are galvanically isolated (including the optional TTL output card) from the internal electronics and power supply.
The Alarm port has a UL and VDE approved 3.75 kV AC isolated contact and is protected by a 600 V, 175 mA self-resetting fuse and a 350 V transient suppressor diode.
The Copper Ethernet port provides 1.5 kV isolation and includes ESD suppression on board.
All optional output cards feature at least 3 kV isolation from earth and have ESD suppression suitable for the interface type.
The power supply isolation varies from 1.6 kV for the low and medium voltage power supplies to 3 kV for the high voltage power supply. In addition, a varistor protects the power supply against transverse voltages and transient suppressor diodes protect the internal electronics from longitudinal events.

Appendix

PTP Translator Specifications

Physical Specifications

UL94-V0 polycarbonate flame retardant DIN rail enclosure with IP40 compliance (Ingress Protection rating).

Dimensions

| Width Depth

Height

| 72 mm

60 mm

90 mm

Weight| 0.15 kg
Input and Output Specifications
TTL| 5 V (4.5 V at 150 mA)| 2 Pin| < 100 ns to UTC
Fiber (λ = 820 nm)1| -19 dB optical power| ST| < 100 ns to UTC
Alarm| 275 Vac / 275 Vdc,

100 mA

| 2 Pin|
Ethernet (Copper)|  | RJ-45|
Ethernet (Fiber)2| TX: -17 dB optical power

RX: -33 dB sensitivity

| Dual ST, ½ inch pitch|
Optional Output Specifications
TTL| 5 V (4.5 V at 150 mA)| 2 Pin| < 100 ns to UTC
Serial (String)| ± 9 V| 2 Pin| < 1 ms to UTC
AM IRIG-B (modulated)| 8 V| 2 Pin| < 2 µs to UTC
Environmental Specifications
Operating Temperature Range| -10 to +65° C
Electrical Specifications

Power Supply

| Low Voltage| 14 – 36 Vdc| 2 Pin + common earth
Medium Voltage| 20 – 75 Vdc| 2 Pin + common earth
High Voltage| 90 – 300 Vdc| 2 Pin + common earth
Power drain| 4 W max

1. Fibre transmitter is compatible with 50/125 μm, 62.5/125 μm and 100/140 μm multimode glass fiber.
2. Fibre Ethernet is compatible with 50/125 μm and 62.5/125 μm multimode glass fiber.

Serial Output String (Serial Output Option)

General Key to Fields
Fields between brackets (‘<’ and ‘>’) represent ASCII character codes. The used codes are in Table 6 below:

Table 6 – ASCII character codes

NGTS Time Code O/P
The NGTS time code is normally used in conjunction with a 10 ms pulse that finishes precisely on the second. Timing Transmitted once per minute. Sent during the last second before the minute rollover to which the data in the string refers. Table 7 details the NGTS serial string format and fields.

Table 7 – NGTS String Time Code Format Fields

Timing| Transmitted once per minute. Sent during the last second before the minute rollover to which the data in the string refers.
---|---
Default Comms| 9600 bps, 8-bit ASCII, no parity
Definition| TyyMMDDWhhmmx
Placeholder| Content
T| “T”
yy| Last two digits of the year: e.g., “21” = the year 2021
MM| Month: “00” = January … “12” = December
DD| Day of Month: 01…31
W| Day of week: “1”= Monday … “7”= Sunday
hh| Two-digit hour
mm| Two-digit minute
x| Time mode: ”0” = Local time, “1” = UTC time