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Huahuan Electronics HX.PTP-GM02 User Manual

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HX.PTP-GM02
Suction-window-mount
GNSS based
Indoor PTP Grandmaster

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Summary of Contents for Huahuan Electronics HX.PTP-GM02

  • Page 1 HX.PTP-GM02 Suction-window-mount GNSS based Indoor PTP Grandmaster...
  • Page 2 HX.PTP-GM02 Suction-window-mount GNSS based Indoor PTP Grandmaster User’s Manual Beijing Huahuan Electronics Co., Ltd. Version 1.0 (Sept. 2018)
  • Page 3 The information in this document, including product specifications and information, is subject to change without notice. For information related, please consult Beijing Huahuan. Copyright © Beijing Huahuan Electronics Co., Ltd. 2013 All rights reserved Model: HX.PTP-GM02 Product Name: GeckoSynco Description: Suction-window-mount GNSS based Indoor PTP Grandmaster Manual Version: 1.0...

  • Page 4: Table Of Contents

    Contents  OVERVIEW ................. 1 1.1. Features ................... 1 1.2. Ordering Information ..............2  TYPICAL APPLICATION ............. 2 2.1. IEEE-1588V2 Grandmaster Clock ..........3 2.2. 1PPS+ToD Scenario ............... 6 2.3. GeckoSynco as NTP Server ............7  ARCHITECTURE AND INSTRUCTIONS ......8 3.1.
  • Page 5 3.3.3. PTP Grandmaster Clock ............17 3.3.4. SNMP Agent ................18  INSTALLATION AND OPERATION ........18 4.1. Location Selection ................ 18 4.2. Installation ..................20 4.2.1. Mounting Procedure .............. 20 4.2.2. Connecting the Ethernet and PoE Adaptor ......21 4.2.3.
  • Page 6 6.2.2. Version Check................ 31 6.2.3. IP Related Settings ..............31 6.2.4. Check 1PPS Settings .............. 31 6.2.5. Setting 1PPS Duty Cycle ............31 6.2.6. Setting 1PPS Delay ..............32 6.2.7. Restore Factory Settings ............32  TROUBLE SHOOTING ............32 ...
  • Page 7 List of Figures Figure 2-1 Enterprise smallcell synchronization scheme ..... 5 Figure 3-1 HX.PTP-GM02 diagram ............. 8 Figure 3-2 HX.PTP-GM02 bottom panel ..........9 Figure 3-3 RJ45 connector diagram ............ 10 Figure 3-4 RJ-11 Pin numbering order ..........13 Figure 3-5 Front and rear panel of the PoE adaptor ......15 Figure 4-1 Sky view clearance............
  • Page 9 List of Tables Table 1-1 HX.PTP-GM02 ordering information ........2 Table 3-1 Color code of the SYS LED ..........9 Table 3-2 Color code of the L/A and LOS LEDs ....... 10 Table 3-3 RJ-45 pin definition ............10 Table 3-4 1PPS+ToD port pin definition ..........13 Table 3-5 Dip switch functions ............

  • Page 11: Overview

    Apart from being a PTP grandmaster, HX.PTP-GM02 also has a built-in NTP server, as well as an output port for 1 pulse-per-second and time-of-day (1PPS+ToD) signals used by different end equipment for timing reference.

  • Page 12: Ordering Information

    (specify power cord for your country), RJ45 plug×3, 6-pin RJ12 plug×1, suction cup×4 (screwed onto the main device)   The HX.PTP-GM02 device receives satellite signals from various GNSS systems, acquires time synchronization to International Atomic Time (TAI) HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 13: Ieee-1588V2 Grandmaster Clock

    Grandmaster clocks compliant to these profile standards are called telecom grandmasters, or T-GM. Supported by hardware and software code sign, the HX.PTP-GM02 can operate under a set of pre-defined profiles, so that it can be readily used as a GM in a number of applications.
  • Page 14 One of the key requirements for this arrangement is the availability of high quality, low cost, easy to install GM devices. The HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 15: Figure 2-1 Enterprise Smallcell Synchronization Scheme

    Beijing Huahuan Electronics Co., Ltd GeckoSynco is particularly suited in this regard. In the scenario shown in Figure 2-1, a HX.PTP-GM02 is running the ITU-T G.8275.1 profile. It is installed within an enterprise building as the local T-GM, constitutes a PTP domain with all the smallcells and the enterprise LAN devices.

  • Page 16: 1Pps+Tod Scenario

    100 meters limit of Ethernet. When distance budgt exceeds 100 meters, this configuration may be considered. The 1PPS+ToD cable is usually also made with CAT5 cable just like the Ethernet cable, but the plug used HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 17: Geckosynco As Ntp Server

    The GeckoSynco can be used as the local NTP server in such networks. GeckoSynco synchronizes to the TAI/UTC international standard time through GNSS satellites, with sub-microsecond accuracy. The built-in NTP service makes it an ideal stratum-1 NTP server. Without congestions and the resulting packet HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 18: Architecture And Instructions

    GeckoSynco also a good choice for networks requiring better timing even if it does have access to the internet.   3.1. Structure HX.PTP-GM02 is depicted in the following diagram: Suction SYS LED GeckoSynco Figure 3-1 HX.PTP-GM02 diagram On the front surface, a 3-color LED is used to indicate the operational status of the device, as described in Table 3-1.

  • Page 19: System Led

    3.1.2 through 3.1.5. 1 PPS+TOD Figure 3-2 HX.PTP-GM02 bottom panel Note: As a PoE powered device (PD), DC 48V power is provided to HX.PTP- GM02 through the Ethernet port. There is no separate power input.

  • Page 20: Electrical Eth Port

    RJ45 connector diagram is shown in Figure 3-3 and pin definition for the RJ45 is given in Table 3-3. Note that it is compatible with PoE standard. Figure 3-3 RJ45 connector diagram Table 3-3 RJ-45 pin definition Eth. Sig. ring ring ring ring HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...
  • Page 21 2. Power Over Ethernet HX.PTP-GM02 is powered through its Ethernet port. As a PoE powered device (PD), it accepts DC 48V voltage from any set of pairs shown inTable 3-2. If the link partner, such as an Ethernet switch, is a PoE power sourcing equipment (PSE), power will be provided by that PSE through the Ethernet cable connecting them.

  • Page 22: Optical Port

    IP temporally. 3.1.3. Optical Port The socket marked GX on HX.PTP-GM02 is the 100/1000M Ethernet optical port, supporting auto-negotiation and forced 1000M full duplex mode. A hot swapable SFP optical module is required to use the optical Ethernet. When using single-fiber transceiver module, there is only one optical fiber port.

  • Page 23: 1Pps+Tod Port

    3.1.4. 1PPS+TOD Port The 6-pin RJ12 socket marked 1PPS+TOD on the bottom panel of the HX.PTP-GM02 is used for 1 pulse-per-second and time-of-day signal output. The pin numbering of the RJ12 connector is shown in Figure 3-4. Please note that ordinary RJ12 connectors widely used for telephones only have 4 pins, and therefore is not suitable for the 1PPS+ToD port.

  • Page 24: The Dip Switches

    IP and Mask. 3.2. Power Supply As a PoE PD device, HX.PTP-GM02 gets its power from the connected Ethernet cable. Power dissipation is about 5 watts, and PoE voltage range is DC 36V~57V. An optional Class-2 PoE adaptor is available which converts wall voltage of AC 100V~240V to the PoE voltage.

  • Page 25: Functional Descriptions

    1 satellite can provide good synchronization. If precise 3D coordinates are not known, the GeckoSynco should be put in ‘3D Search’ mode, and given enough time, from 24 hours to 72 hours, the device will HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 26: Synchronous Ethernet (Synce)

    : If mounted on a mobile platform, the <100ns accuracy may be compromised. 3.3.2. Synchronous Ethernet (SyncE) Synchronous Ethernet (SyncE) provides frequency reference at the physical level of the Ethernet signal. Device supports two SyncE modes: HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 27: Ptp Grandmaster Clock

    Provide Ethernet frequency extracted from GNSS or internal holdover signal. As the GM in a domain, the HX.PTP-GM02 is most likely to be a SyncE master, providing frequency as well as time reference to the rest of the network. But sometimes, a domain may wish to receive its frequency from a connected SyncE network while get accurate time from the local GM.

  • Page 28: Snmp Agent

    Beijing Huahuan Electronics Co., Ltd 3.3.4. SNMP Agent As a networked device, HX.PTP-GM02 can be managed remotely by a SNMP manager through its built-in SNMPv2 agent. The default community name is ‘public’ for retrieval of the read-only status information and ‘private’ for configurable parameters stored in the MIB of the managed device.

  • Page 29: Figure 4-1 Sky View Clearance

    60 degrees vertically and horizontally, as depicted in Figure 4-1. When installed, the satellite info web page can be consulted to verify that at least 4 satellites are in sight, given by the ‘Num SV’ parameter in Figure 6-6. HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 30: Installation

    Ethernet link partner is a PSE that can supply the PoE power directly, the adaptor in the schematic is not needed. The use of the 1PPS+PoD and/or the optical cable is optional, depends on the use case, but the PoE Ethernet cable is always needed HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 31: Connecting The Ethernet And Poe Adaptor

    Step 1 Prepare a CAT5 cable of appropriate length, crimping the supplied 6-pin RJ12 plug on one end according to Table 3-4. Take note of the cable length in meters for later delay calculation. Note that common 4-pin RJ12 plug is not suitable. HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 32: Setting Operating Parameters

    See Section 6  Software Usage for details.   HX.PTP-GM02 can be managed through CLI commands, a web browser, or a SNMP manager. All three methods use the Ethernet port to communicate with the device. To manage the device, a valid unique local IP must be allocated to it first.

  • Page 33: Software Usage

    Beijing Huahuan Electronics Co., Ltd   6.1. Web Server Interface This chapter describes web pages used to manage the HX.PTP-GM02. 6.1.1. Web Server Login Type in the IP address in the address field of the web browser, for example: http:// 192.168.1.2 to connect to the built-in web server of the GeckoSynco.

  • Page 34: Online Upgrade

    After correctly uploaded the necessary files into the /home directory, open the upgrade web page by click “System->Upgrade” in the navigation tree, as shown in Figure 6-3. Tick the boxes for items to be upgraded, click Apply to start upgrading. HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 35: Configuring The Time Mode

    6.1.4. Configuring the Time Mode HX.PTP-GM02 can operate under two different time modes, i.e. ‘3D Search’ mode and ‘Fixed’ mode. Although the device is designed to provide time reference rather than navigation, the absolute position and the time are tightly coupled variables.

  • Page 36: Figure 6-4 Fixed Time Mode

    It is not always practical to know the 3D coordinates precisely in advance. The GeckoSynco can calculate its exact position by longtime averaging. Set the Time Mode to ‘3D Search’ and click Apply as in Figure 6-5. HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 37: Gnss Info Enquiry

    Every meter-off results in a phase error of about 3ns. 6.1.5. GNSS Info Enquiry Click “GNSS->Information” in the navigation tree, bring up the GNSS Info page as shown in Figure 6-6. HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 38: Ptp Parameter Setting

    Note: when move the device to new positions, new 3D coordinates must be entered, or change the time mode back to ‘3D Search’ to re-initiate location acquisition. 6.1.6. PTP Parameter Setting Click “PTP Setting” on the navigation tab into the PTP setting page. HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 39: 1Pps+Tod Setting

    Apply button to apply the changes. 6.1.7. 1PPS+ToD Setting Click the “1PPS+ToD” on the navigation tab, enter 1PPS+ToD setting page. This page is used to set two parameters: 1PPS cable delay compensation, and ToD format selection. HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 40: Figure 6-8 1Pps+Tod Settings

    GeckoSynco has two built-in formats to choose from, namely the CMCC standard by China Mobile Communications Corporation, and G.8271 recommended by ITU-T. Do not forget to click the Apply button for new settings to take effect. HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 41: Cli Description

    192.168.1.10 netmask 255.255.255.0 gateway 192.168.1.1 to set other info. 6.2.4. Check 1PPS Settings CLI> show out_1pps 1PPS Output Duty : 10% 1PPS Output Delay(ns) : 0 6.2.5. Setting 1PPS Duty Cycle CLI> out_1pps duty 20 HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 42: Setting 1Pps Delay

    Satellite signal fail (newly Remove obstacles, find new appeared obstacles, SYS LED red installation location, wait for interference sources, GNSS GNSS recovery malfunction) Fiber cut Check the fiber LOS LED on Excessive line attenuation Clean optical connector HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 43: Specifications

    If failure persists, contact Huahuan for technical support.   8.1. Satellite Item Description GNSS options GPS, Beidou, Glonass Antenna Internal Time mode 3D search, Fixed Phase accuracy <100ns (locked to GPS) Frequency stability <1ppb (GPS lost, holdover state, 72 hours) HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 44: Protocols

    Mode Auto, or forced 10/100/1000M full duplex, 10M/100M half-duplex Connector RJ45 8.4. Ethernet Optical Interface Item Description Speed 100/1000M Optical interface technical Determined by SFP optical module parameters Mode Auto, or forced 100/1000M full duplex HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

  • Page 45: 1Pps+Tod Interface

    8.7. Physical/Electrical/Environment Item Description Size 120mm x 145mm x 38mm (W×H×D) ≤350g Weight ～240V Power supply Class 2 PoE, AC 100 ≤5W Dissipation ℃~ 50℃ Operating temp ℃~ 70℃ Storage temp Humidity 5-90% RH (non-condensing) HX.PTP-GM02 IEEE-1588 Grandmaster Clock V1.0...

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