PTP client implementation on Windows 10 and Server 2019: Requirements Implementation procedure Troubleshooting How to check if PTP is working? How to check if NTS-pico3 sends PTP messages? 1) PTP L2 (Ethernet) 2) PTP L4 (UDP) APPENDIX Technical Specification Additional notes...
Safety instructions Except external power supply (230VAC), this equipment contains DC (9-30VDC) voltages. Do not handle any metallic part until the 230VAC power supply has been disconnected! Do not assemble, disassemble set when the power reminds switched ON. Making wiring and touching cables is strongly prohibited when power is ON.
Release notes and firmware The latest “Release notes” document and the current firmware version can be found here: https://cloud.elpromaelectronics.com/index.php/s/m7beaxAZzDQ3m5L...
Referential UTC is drawn from GPS & Glonass via built-in GNSS receiver, using NMEA183 frame. NTS-pico3 can also act as an 1PPS frequency reference clock. It can distribute 1PPS using NTP or PTP IEE1588 protocol. It has also 1 SMA 1PPS output.
Mast antenna suspension (H=0.5m) is not included but it is available as separate products from Elproma. Following figure shows an example of how mounting antenna might be achieved.
Note: When the NTS-pico3 is operational, the GNSS antenna assembly may be disconnected for short periods (e.g. maintenance or repair) without interruption to the unit synchronization LAN output.
Page 10
Failure to do so is almost certain to result in destruction of NTS-pico3 and connected into it equipment in the event of the antenna receiving a near lightning strike.
Serial port, either RS232/RS485 Serial RS232/RS485 (RJ-45 connector marked as “RS232/485”) is placed on front panel of router. Serial connector pinout is described in a tables below.
First start and usage Powering up 1. Connect GNSS antenna to SMA connector in NTS-pico3 2. Connect Ethernet LAN cable to RJ45 connector 3. Plug-in DC power supply to power input and turn power ON. Power supply connector pinout: LED indicators The device has four LEDs that indicates its operation.
Minimum configuration requires setup IPv4 IMPORTANT NOTE! For time synchronization purpose please do not use DHCP/DNS. You will need to keep SSH communication ON for GNSS signals tracing. Also, devices synchronizing to NTS-pico3 may assume it has statis IP address.
SSH access control Enable SSH access for easier device GNSS & PTP monitoring if needed. SSH enable (ON) and password is necessary for tracing on-line GNSS signals...
Monitoring GNSS satellite signals ON-LINE SSH communication must be enabled first. Please execute the following commands from terminal: ssh root@192.168.1.234 -p 65535 root@192.168.1.139's password: 12345 [root@rbmtx ~]# TERM=vt220 [root@rbmtx ~]# gpsmon GPSmon tool let you trace satellite signals on-line This screen is the tool to monitor GNSS (GPS & Glonass) satellite signal performance. You should be able to receive signals from at least not less than 4 satellites.
Running NTP (Network Time Protocol) Configuring NTP NTS-pico3 firmware starts NTP server and synchronizes to UTC time received from GPS by default. You can add backup NTP servers in NTP Peer 1...3 fields.
Monitoring NTP on-line SSH communication must be enabled first. Please execute the following commands from terminal: ssh root@192.168.1.234 -p 65535 root@192.168.1.139's password: 12345 [root@rbmtx ~]# ntpq You can use full spectrum of std. NTP monitoring tools incl. ntpq and ntpdc to trace and monitor Network Time Protocol.
Synchronizing Microsoft Windows clock You can simply synchronize any version of Microsoft Windows system by selecting “Time from Internet” and providing NTS-pico3 IPv4 address. Below is an example for Windows 10 system. Using NTS-pico3 as primary source of NTP time for Microsoft Windows Synchronizing Linux &...
Serial ports configuration Available modes for RS232: • None. • Forwarding. • Terminal – Unlocks standard SSH like console on serial port. • ModBus gateway. • GPS NMEA – copies NMEA output from GNSS module and sends it to serial port. Included messages are: RMC, GSV, GSA, GGA.
PTP options: Option name Value type/possible values Description Disabled/Grandmaster/Slave Enabled PTP as Master/Slave. PTP Options Domain Number [0...255] A domain does define the scope of PTP message number communication, state, operations, data sets, and timescale. Devices synchronize only to PTP devices within same domain.
Sync receipt Number (log2) Timeout value of PTP Sync messages. Defines for how timeout long obtained time is marked as valid. PTP Grandmaster dataset Grandmaster Auto/Manual Allows selection between constant UTC-TAI offset and dataset mode automatically calculated measured one. Usage of this (manual) is for testing purposes mostly.
Change the registry keys to configure PTP and disable other client providers (NTP, VMIC etc.). Please modify the below root keys manually: HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\PtpClient Name Value PtPMasters IP of NTS-pico3, default: 192.168.1.234 EnableMulticastRx HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient Name Value Enabled HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\VMICTimeProvider Name...
Page 26
PTP General In PTP General Out Verify if PTP Time Provider is enabled using w32tm /query /configuration command. Then verify that the system is synchronizing with PTP Source Server using w32tm /query /status /verbose command. The output should be as below: ReferenceId: 0x4D505450 indicates that the PTP provider is in use.
SSH. How to check if PTP is working? From NTS-pico3 console you can check if ptp process is running. If everything is fine, you shall get 1 in return: If there is no ptp process you will get 0 (make sure, that you have enabled PTP in web...
APPENDIX Technical Specification Holdover OSC TCXO Supported synchronization protocols NTP, PTP IEEE1588 RFC5905, RFC1305, RFC5906, RFC5907, RFC5908, RFC5909 SNTP RFC4330, RFC2030, RFC1769 IEEE1588: 2008 1PPS output 1x SMA* 1PPS specification PPS out - 3.3 VDC (50 Ohm) Pulse width - 1ms The PPS-out either directly from GNSS module or PTP.
Page 29
Operating temperature (-20°C…+70°C) Storage temperature (-40°C…+85°C) Humidity up to 95% Power 9-30 VDC • Typical: 1.2-1.6W Power consumption • Max typical: < 2W (Peak when active GNSS antenna is not shorted and USB not connected) • Max. possible: < 8W (info for safety, when short-circuit on internal 5V) * extra feature...
NTP or PTP internal clocks of NTS-pico3. The old version NTS-pico (manufactured 2016-2019) does not support above. This version of product cannot be hardware & software update to new NTS-pico3 and it is required to purchase new one.
Need help?
Do you have a question about the NTS-pico3 and is the answer not in the manual?
Questions and answers