Tekron PTP TRANSLATOR User manual

PTP TRANSLATOR
USER MANUAL

PTP Translator Manual / December 2014 2
Contents
1 Introduction ...........................................................................................................................................................................................................................3
2 LED Indicators......................................................................................................................................................................................................................3
3 Inputs and Outputs............................................................................................................................................................................................................4
ETH: Ethernet Port (RJ45 connector / Dual ST Fiber)........................................................................................................................................4
TX: Fiber Output .......................................................................................................................................................................................................................4
TTL: TTL Output ......................................................................................................................................................................................................................4
ALM: Alarm Output..................................................................................................................................................................................................................4
OPT: Optional Output ............................................................................................................................................................................................................4
4 Power Supply Options......................................................................................................................................................................................................4
5 Isolation & Protection.......................................................................................................................................................................................................4
6 Installation ..............................................................................................................................................................................................................................5
Identification ...............................................................................................................................................................................................................................5
Mounting the PTP Translator............................................................................................................................................................................................5
Connecting the PTP Translator .......................................................................................................................................................................................5
7 Product Configuration .....................................................................................................................................................................................................6
8 Appendix .................................................................................................................................................................................................................................7
PTP Translator Specifications ..........................................................................................................................................................................................7
9 Serial Output String (Serial Output Option)........................................................................................................................................................8
10 Warranty Statement........................................................................................................................................................................................................13

PTP Translator Manual / December 2014 3
1Introduction
The PTP Translator converts IEEE 1588 (PTP) signals into legacy time codes including IRIG-B, DCF77, user defined
pulses and serial strings. Orderable options include the power supply, which can be ordered as high, medium or low;
and an optional output, which can be ordered as TTL copper, AM IRIG-B copper or serial strings.
User friendly, secure Windows™ software and Ethernet connectivity make customization and setup easy.
Figure 1 – PTP Translator Front View
2LED Indicators
The top of the PTP Translator features two LED indicators. The SYN LED shows synchronization status of the internal
PTP decoder, 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.
The tables below provide information regarding the interpretation of the LEDs.
SYN LED
Meaning
Off
The PTP Translator is not synchronized.
Slow Flash
The PTP Translator is in hold-over mode.
Fast Flash
The PTP Translator is out of sync and not in holdover.
On
The PTP Translator is synchronized.
Table 1 – SYN LED Functionality
ALM LED
Meaning
Off
The PTP Translator is operating normally and has no alarms.
Fast Flash
An alarm is active. To identify the alarm, use the configuration tool.
Table 2 – ALM LED Functionality

PTP Translator Manual / December 2014 4
3Inputs and Outputs
ETH: Ethernet Port (RJ45 connector / Dual ST Fiber)
PTP Translator units are fitted with either a RJ45 10/100 Ethernet interface or a dual ST Fiber 100FX Ethernet
interface. The unit can be configured over the LAN (Local Area Network) and can be upgraded to include a
NTP / SNTP License.
Next to the Ethernet connector are two LEDs with the “LNK” LED (green) above the “ACT” LED (yellow). 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.
TX: Fiber Output
The fiber output can be configured by the configuration tool to output an IRIG-B (B00x, B22x) signal, a DCF-77 signal
or user defined pulse. The fiber transmitter is compatible with 50/125 µm, 62.5/125 µm and 100/140 µm glass fiber.
TTL: TTL Output
The TTL output is a high drive, non-isolated TTL level driver which can be configured by the Configuration Tool to
output an IRIG-B (B00x, B22x) signal, a DCF-77 signal or user defined pulse.
ALM: Alarm Output
The alarm output is a high voltage isolated contact capable of switching up to 300 V at 100 mA. It is normally-closed
so that the alarmed state is the contacts open (i.e. the same as when the power is off). The alarm source is
configurable by the configuration tool.
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.
The table below shows the main variants and orderable options:
Output Type
Features
TTL
TTL (5 V, 150 mA) IRIG-B (B00x, B22x), DCF-77 or user defined pulse output.
Serial
RS232 level (9 V, 10 mA) output supporting serial strings.
AM IRIG-B Analog IRIG-B (B12x) signal, typically 8 V with 3:1 mark space ratio. Output Impedance 120
Ω.
Requires a 100 – 180 Ωterminator.
Table 3 – PTP Translator Available Interface Modules
4Power Supply Options
There are three different power supply options available for the PTP Translator. Low, medium or high voltage supplies
are available as a card and feature similar maximum output ratings but different levels of isolation.
Power Supply
Features
Low
14 – 36 Vdc Maximum 5 W, 1.6 kV Isolation
Medium
20 – 75 Vdc Maximum 5 W, 1.6 kV Isolation
High
90 – 300 Vdc Maximum 5 W, 3.75 kV Isolation
Table 4 – PTP Translator Available Power Supplies
5Isolation & 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.

PTP Translator Manual / December 2014 5
The Copper Ethernet 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 Low and Medium power supplies to 3 kV for the High power supply.
In addition, a varistor protects the power supply against transverse voltages and transient suppressor diodes protect
the internal electronics from longitudinal events.
6Installation
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 as well as the serial number and firmware revision.
Check the identification label on the side of the unit to ensure that the correct output and voltage has
been supplied before proceeding to install.
The label on the side of PTP Translator contains the voltage range: Do not apply power outside of this
range!
Mounting the PTP Translator
The PTP Translator is designed to be mounted to a standard din rail mount using the supplied clips on the base (See
Figure 2). The clips can also be used to screw mount the unit by extending them beyond the case edge.
Figure 2 – Base of PTP Translator
Connecting the PTP Translator
The PTP Translator has a RJ45/ 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 (30-12AWG) solid cable
• 0.2-2.5mm² (30-12AWG) 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.

PTP Translator Manual / December 2014 6
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.
Note: The Power supply has polarity protection built in to prevent damage.
The label on the side of PTP Translator indicates the type of IO card: Do not apply voltages to output
only cards and ensure that switch cards are connected appropriately!
7Product Configuration
Any configuration changes will need to be done via the Windows based Configuration Tool. The Configuration Tool is
compatible with and version of Windows after Windows XP Service Pack 3, including Windows 7, 8 and 8.1. The latest
version of the tool is available from the Tekron web site www.tekron.com/ptp-translator under the “Resources” tab.
Figure 4 - PTP Translator Bottom Connectors
Figure 3 - PTP Translator Top Connectors

PTP Translator Manual / December 2014 7
8Appendix
PTP Translator Specifications
Physical Specifications
UL94-V0 polycarbonate flame retardant DIN rail enclosure with IP40 (Ingress Protection rating).
Performance Property
Metric
Dimensions
Width
Depth
Height
72 mm
60 mm
90 mm
Weight
0.15 kg
Input and Output Specifications
Type
Electrical
Physical
Accuracy at the port1
TTL
5 V (4.5 V @ 150 mA)
2 Pin
< 100 ns of UTC
Fiber (
λ
= 820 nm)2
-19 dB optical power
ST
< 100 ns of UTC
Alarm
265 Vac / 300 Vdc,
100 mA
2 Pin
Ethernet (Copper)
RJ45
Ethernet (Fiber)3
TX: -17 dB optical power
RX: -33 dB sensitivity
Dual ST, ½ inch pitch
Optional Output Specifications
Type
Electrical
Physical
Accuracy at the port1
TTL
5 V (4.5 V @ 150 mA)
2 Pin
< 100 ns of UTC
Serial (String)
± 9 V
2 Pin
< 1 ms of UTC
AM IRIG-B (modulated)
8 V
2 Pin
< 2 µs of UTC
Environmental Specifications
Performance Property
Metric
Operating Temperature Range
-10 to +65 oC
Electrical Specifications
Performance Property
Electrical
Physical
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
1Note the UTC accuracy depends on the PTP interface and the accuracy of the clock supplying the master time signal.
2Fibre transmitter is compatible with 50/125 µm, 62.5/125 µm and 100/140 µm multimode glass fiber.
3Fibre Ethernet is compatible with 50/125 µm and 62.5/125 µm multimode glass fiber.

PTP Translator Manual / December 2014 8
9Serial Output String (Serial Output Option)
General Key to Fields
Fields between brackets (‘<’ and ‘>’) represent ASCII character codes. The used codes are in the following table:
Placeholder
HEX
Content
<SOH>
01
ASCII Start of Header character
<STX>
02
ASCII Start of Text character
<ETX>
03
ASCII End of Text character
<BEL>
07
ASCII BEL character
<LF>
0A
ASCII Line Feed character
<CR>
0D
ASCII Carriage Return character

20
ASCII Space character
NGTS Time Code O/P
Timing Transmitted once per minute. Sent during the last second before the minute rollover to which the data in the
string refers.
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<CR><LF>
Placeholder
Content
T
"T"
yy
Last two digits of the year: e.g. “12” = the year 2012
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
Example Interpretation:
T020422112340<CR><LF> Monday 22 April 2002 – 12:34 local time
IRIG J-17 Time Code O/P
About
This code is compatible with IRIG Standard 212-00.
Timing
Transmitted once every second. The leading edge of the “start” bit of the first character <SOH> is
exactly on the second that the message describes.
Default Comms
9600 bps, 7-bit ASCII, odd parity
Definition
<SOH>ddd:hh:mm:ss<CR><LF>
Placeholder
Content
ddd
Day of year: range “001” – “366”
:
HEX 3A
hh
hour: “00” – ”23”
mm
minute: “00” – “2
ss
Seconds: “00” – “59”
Example Interpretation:
<SOH>112:12:34:36<CR><LF> day 112, time 12:34:36

PTP Translator Manual / December 2014 9
String-A Time Code O/P
About
This code is very similar in data content to the IRIG J-17 code, but adds a two-character field
containing the year, and uses 8-bit ASCII, no parity data format.
Timing
Transmitted once every second. The leading edge of the “start” bit of the first character <SOH> is
exactly on the second that the message describes.
Default Comms
9600 bps, 8-bit ASCII, no parity
Definition
<SOH>ddd:hh:mm:ss:yy<CR><LF>
Placeholder
Content
ddd
Day of Year: range “001” – “366”
:
HEX 3A
hh
hour: “00” – ”23”
mm
minute: “00” – “59”
ss
seconds: “00” – “59”
yy
year: “00” – “99” representing the last two digits of the year since 2000
Example Interpretation:
<SOH>112:12:34:36:10<CR><LF> day 112, time 12:34:36, year (20)10
String-B Time Code O/P
About
This code substitutes a “Quality” indicator byte for the year field, but otherwise is identical in form,
function and timing to String-A.
Timing
Transmitted once every second. The leading edge of the “start” bit of the first character <SOH> is
exactly on the second that the message describes.
Default Comms
9600 bps, 8-bit ASCII, no parity
Definition
<SOH> ddd:hh:mm:ssQ<CR><LF>
“Quality” Character (Q)
Content
HEX
ASCII
20
‘ ’ (space)
Clock in sync, timing accuracy is better than 60 ns
2E
‘.’ (full stop)
Clock is accurate to 1 µs
2A
‘*’
Clock is accurate to 10 µs
23
‘#’
Clock is accurate to 100
µ
s
3F
‘?’
Clock accuracy may be worse than 100
µ
s
*Refer to String-A table (above) for the definitions of the common digits
Example Interpretation:
<SOH>112:12:34:36?<CR><LF> day 112, time: 12:34:36, >100 µs sync error
String-C Time Code O/P
About
This code is effectively a combination of String-A and String B. It provides both year information
and a sync indicator field.
Timing
Transmitted once every second. The leading edge of the “start” bit of the first character, <CR>, is
exactly on the second to which the message data refers.
Default Comms
9600 bps, 8-bit ASCII, no parity
Definition
<CR><LF>Qyydddhhmmss.000
Placeholder
Content
Q
Quality indicator: ‘ ‘ = in-sync, ‘?’ = out-of-sync

HEX 20 (space)
yy
Year: “00” – “99” representing the last two digits of the year
ddd
Day of year: range “001” – “366”

PTP Translator Manual / December 2014 10
Placeholder
Content
hh
hour: “00” – ”23”
mm
minute: “00” – “59”
ss
seconds: “00” – “59”
.000
ASCII “.000”
Example Interpretation:
<CR><LF>? 02 112 12:34:36.000 day 112 of year (20)02, time: 12:34:36, out-of-sync
String-D Time Code O/P
String-D is IDENTICAL in content to String-B, but the second mark is at the leading edge of the start-bit of the (<CR>).
Example Interpretation:
<SOH>112:12:34:36?<CR><LF> day 112, time: 12:34:36, >100 µs sync error
String-E Time Code O/P
About
This provides time, year information, and a sync indicator field.
Timing
The string is transmitted once every second, with the leading edge of the “start” bit of the <CR>
exactly on the second.
Default Comms
9600 bps, 8-bit ASCII, no parity
Definition
<SOH>YYYY:ddd:hh:mm:ssQ<CR><LF>
Placeholder
Content
YYYY
4-digit year
:
HEX 3A
ddd
Day of year: range “001” – “365”
hh
hour: “00” – ”23”
mm
minute: “00” – “59”
ss
seconds: “00” – “59”
Q
Quality character, as defined in String-B (above)
Example Interpretation:
<SOH>2004:112:12:34:36?<CR><LF> 2004, day 112, 12:34:36pm, >100us sync error
String-F Time Code O/P
About
This string complies with the protocol required to drive Vorne type Time Displays.
Timing
The string is transmitted once every second, with the leading edge of the “start” bit of the last
<BEL> exactly on the second.
Default Comms
9600 bps, 8-bit ASCII, no parity
Definition
<CR><LF>1100<CR><LF>44hhmmss<CR><LF>54ddd<CR><LF><CR><LF>45HHMMss<CR>
<LF>55DDD<CR><LF><BEL>
Placeholder
Content
1100
ASCII “1100”
44
ASCII “44” (means local time follows)
hh
Local hour of day: “00” – ”23”
mm
Local minute of day: “00” – “60”
ss
seconds: “00” – “59”
54
ASCII “54” (means local day of year follows)
ddd
Local day of year: “001” – “365”
45
ASCII “45” (means UTC time follows)

PTP Translator Manual / December 2014 11
Placeholder
Content
HH
UTC hour: “00” – ”23”
MM
UTC minute: “00” – “59”
55
ASCII “55” (means UTC day of year follows)
DDD
UTC Day of year: “001” – “365”
String-G Time Code O/P
About
This general time string is used predominantly in Europe.
Timing
The string is transmitted once every second, with the leading edge of the “start” bit of the last
<ETX> exactly on the second.
Default Comms
9600 bps, 8-bit ASCII, no parity
Definition
<STX>swhhmmssDDMMyy<LF><CR> <ETX>
Placeholder
Content
s
Clock Status (see below)
w
Day of Week (see below)
hh
hour of day: “00” – ”23”
mm
minute of day: “00” – “60”
ss
seconds: “00” – “59”
DD
day of month: “01” – “31”
MM
month of year: “01” – ”12”
yy
year: “10” – “99”
Clock Status
The s “Clock Status” is an ASCII character in the range 0-9, A-F representing a single hex digit (nibble)
Bits
3
2
1
0
0
No announcement for time change
1
Announcement for time change – active for an hour before
0
Local Standard Time (LST)
1
Daylight Saving Time (DST)
0
0
Time/date invalid – clock is out of sync
0
1
Hold-over mode – running on local Oscillator
1
0
GPS / IRIGB controlled mode
1
1
GPS / IRIGB controlled mode (high accuracy)
Day of Week
The w “Day of Week” is an ASCII character in the range 1-7, 9, A-F representing a single hex digit (nibble)
Bits
3
2
1
0
0
Local Time
1
UTC time
0
0
1
Monday
0
1
0
Tuesday
0
1
1
Wednesday
1
0
0
Thursday
1
0
1
Friday
1
1
0
Saturday
1
1
1
Sunday
Example Interpretation:
<STX>E3123456170410<LF><CR><ETX> High Accuracy Mode, DST, Wed, 12:34:56, 17/4/2010

PTP Translator Manual / December 2014 12
NMEA ZDA Time Code O/P
About
This string is defined by the NMEA-0183 standard and transmitted at 9600 bps.
Timing
Transmission is once every second. The leading edge of the “start” bit of the “$” is exactly on the
second.
Default Comms
9600 bps, 8-bit ASCII, no parity
Definition
$GPZDA,hhmmss.00,dd,mm,yyyy,s,xx,yy*CC<CR><LF>
Placeholder
Content
$GPZDA
ASCII “$GPZDA”
,
ASCII “,” (comma)
hh
UTC hour of day: “00” – ”23”
mm
UTC minute of day: “00” – “60”
ss
UTC Seconds: “00” – “59”
.00
ASCII ”.00”
dd
UTC day of month: “01” – “31” depending on which month
mm
UTC month: “01” – “12”, “01” = January
yyyy
UTC year, 4 digits.
s
Local time zone offset sign (positive means local time leads UTC)
xx
Local time zone offset from UTC in hours
yy
Local time zone offset from UTC in minutes
*
ASCII “*”
CC
2-digit hex representation of the result of XORing the 8 data bits of each character between, but
not including the "$" and "*". (00-FF)
Example Interpretation:
$GPZDA,123456.0023042010+1200* UTC time is 12:34:56, 23 April 2010, the local time offset is +12:00
NMEA RMC Time Code O/P
About
This string is defined by the NMEA-0183 standard and transmitted at 9600 bps.
Timing
Transmission is once every second. The leading edge of the “start” bit of the “$” is exactly on the
second.
Comms
9600 bps, 8-bit ASCII, no parity
Definition
$GPRMC,hhmmss.00,a,tttt.tttt,N,ggggg.gggg,W,0.0,0.0,ddmmyy,0.0,E*CC<CR><LF >
Placeholder
Content
$GPRMC
ASCII “$GPRMC”
,
ASCII “,” (comma)
hhmmss
UTC hour, minute, seconds
.
ASCII “.” (full stop)
0
ASCII “0”
a
Status: “A” = valid, “V” = invalid
tttt.tttt
Latitude : “00” – “89” degrees; “00.0000” – “59.9999” minutes
N
Latitude (north/south): “N” = north, “S” = south
ggggg,gggg
Longitude (degrees, minutes): “000” – “359” degrees; “00.0000” – “59.9999” minutes
W
Longitude (east/west): “E” = east, “W” = west
ddmmyy
UTC day of month, month & 2-digit year
E*
ASCII “E*”
CC
2-digit hex representation of the result of XORing the 8 data bits of each character between, but not
including the "$" and "*".

PTP Translator Manual / December 2014 13
10 Warranty
For terms and conditions of Tekron’s Warrantee see the Web Site
http://tekron.com/about-tekron/warranty
WARNING
This product has been designed to comply with the limits for a Class A digital device pursuant to Part 15 of FCC rules.
These limits are designed to provide reasonable protection against such interference when operating in a commercial
environment.
Notes
The information in this manual may change without notice. The manufacturer assumes no responsibility for any errors
that may appear in this manual.
Ethernet is a trademark of XEROX Corporation. Windows, Windows 95, Windows 98, Windows 2000, Windows NT,
Windows XP, Windows Vista, and Windows 7 are trademarks of Microsoft™ Corp.
Copyright ©2014 Tekron International Ltd. All rights reserved. No part of the contents of this document may be transmitted or reproduced in any form or by any
means without the written permission of Tekron International Ltd. Published in New Zealand.