GPS timing-based network synchronization clock Beidou Instructions Comments

 GPS timing-based network synchronization clock Beidou Instructions Comments

GPS timing-based network synchronization clock Beidou Instructions Comments

 This article is provided by the Anhui Beijing-Technology More Information Request + micro ♥ ahjzsz

A first portion of the satellite clock server on   

 

First, the product features

Satellite clock server is a use of GPS or Beidou satellite to provide products with high precision network time services. Easy to install satellite antenna (prompted by the release position according to the number of pieces real-time satellite antenna), the interface may support Ethernet 10 / 100Mbps and serial (baud rate can be set), 1PPS \ PPM \ PPH, IRIG-B code or the like, the accuracy of Network Time 1 ~ 10mS (second service capability 2000 times / sec), the time serial 8.33uS accuracy time information may be provided to the computer network and instrumentation equipment.

This product has a strong running stability, a period when the module fails or an antenna failure, the system can automatically timekeeping mechanism (1 year little influence accuracy) is enabled, the NTP server to ensure continuous and reliable operation when timing. When the antenna module or to normal timing, the system can self-recovery time synchronization accuracy.

 

Second, the appearance of the product

2.1 Front Panel

 

 

2.2 Rear Panel

 

 

 

Third, the product installation

3.1 Connect the antenna

Connected to the antenna "ANT" port.

 

3.2 Connect the power

220V power cable to the base or AC220V power adapter (7.5V ~ 12V) to the DC port. Can also be connected at the same time, improve the reliability of power supply.

 

3.3 LAN network interface

    Network cable connected to NTP1-NTP4 Ethernet ports, support 10 / 100Mbps Ethernet, NTP follow SNTP4.0 agreement, in line with RFC2030 requirements.

 

Fourth, the boot

 

4.1   plus power

Turn on the power switch, the LCD will display "Please wait ... Star Search", depending on how much the number of satellites, the acquisition time, position the antenna, to ensure the best number of visible satellites 4 or more.

 

4.2 indicators

Power - power connection Always ON indicates normal, power is not connected Off

Pulse - flashing indicates second timing pulse to provide the service module, is off when no pulse signal

Lock - If the indicator lock time service and the satellite, the satellite is off when no effective number of pieces

When the pulse, the locking indicator is flashing, steady when the device board is running normally

4.3 LCD screen instructions

   Most of the time left is displayed, in strict accordance with second burst synchronization (error less than 10uS).

   System status indication for the upper right corner, the first character represents the time zone (B- Beijing, G-GMT, U- another time zone), but when "L", means that when the gatekeeper enters NTP state occurs; the first 2 characters represent the serial radio interface and timing synchronization (per the R-, S- synchronization instant 5 minutes, F- 8 minutes late start synchronization 2:00); the third character represents the NTP network port is provided or not (N- NTP network ports open, blank -NTP net mouth closed). The default display mode "BRN".

   Bottom right indicates a synchronized manner and time accuracy correction value, the first character represents a synchronous (sync T-tail, head H-sync); 2-4 characters expressed in 10ms, 1ms, us is the accuracy of the correction value unit. The default setting is "T000".

Fifth, the device parameter settings

On parameter settings, in accordance with the display prompts, implemented by the function key operation. When the information presentation screen, if the time "press" button indicates that the function is not selected; does not press the "function key", if the current default parameters selected within 2 seconds. First press the function key, first display "Calibration time:."

5.1 Calibration time (skip)

This option buttons to skip turn 5 .2 , or enter the sub-item selection, followed by an optional "real-time calibration", "real-time calibration", "time alignment", "participation calibration punctuality", "no calibration."

Note: The "real-time" refers to, UART transmission time per second;

   "Instant" refers to, UART starts from the current time, over 5 minutes, every second transmission time;

   "Time" refers to, UART period from 2:00 to 2:08, the transmission time per second;

   "Punctual" means, once the timing module exception, until the time keeping unit is a substituted normal timing module;

   "No calibration" means, UART not send time.

5.2 synchronous mode (skip)

　　"Tail" synchronous, meaning that the client receives complete packet GPRPC moment happens to be the second time synchronization of; "head" synchronous, meaning that the moment the client receives the packet first character "$" is exactly synchronized seconds time. The default configuration is referred to as "tail" synchronization.

5.3 accuracy selector (skip)

   The default configuration is not precision correction.

5.4 NTP server setting selection (skip)

This option buttons to skip turn 5 .5 , or enter the sub-item selection, optional "NTP start" or "NTP prohibited." The default configuration is "NTP start."

5.5 serial baud rate setting (skip)

This option skip button switch. 5 .6 , otherwise go to the sub-item selection, or alternatively 115200bps 9600bps. The default configuration is 9600bps.

5.6 the position of the & timezone

This option skip button switch. 5 .7 , or antenna position (latitude and longitude), the time zone, the number of visible satellites are sequentially displayed.

5.7 Setting Time Zone

This option buttons to skip turn 5 .8 , or enter the sub-item selection, followed by an optional "Beijing?", "Greenwich Mean Time?" And other time zone (in hours). The default setting is "Beijing."

5.8 Time synchronization cycle

    This option skip button switch. 5 .9 , otherwise go to the sub-item selection, an optional order, "second sync", "1 minute synchronization", "10 minutes sync", "1 hour sync", "4 hours sync." The default setting is "second sync."

5.9 restore the default configuration

Button to skip this option turn 5.10 , or restore the factory into the initial configuration.

5.10 Configuration End

Exit configuration operations.

 

Sixth, Frequently Asked Questions

Sequence of questions	Now like	Row so	Preparation Note
1	Black Pingtung	Check the power line, a switching state
2	The number of satellites is always "00"	The antenna is not connected or bad
3	The number of satellites changes very slowly (3 minutes)	Check antenna position and adjust
4	Misuse	Press function keys, enter parameter configuration page; or reboot
5	Suspect redundancy	The main antenna is removed, to see whether the device is working properly, if the normal functioning redundant description

 

 

 

 

 A second portion of the network interface configuration described  

1. The NTP1-4 network interface through the network cable is connected to the LAN

2. The configuration package is installed within any network computer (or server)

    Forever_NTP client .zip, need to decompress.

3. Run SNTPManager.exe, pop up the following figure:

 

 

 

 

 

 

 

4. configure the IP address of NTP

 

 

 

 

 

 

Double-click the online status (if not, click on "Local Search"), pop-up shown on the left; Second, choose "Network Parameters" attribute, as shown in the pop-up on the right; then configure or modify LAN IP, subnet mask, gateway, according to user IP; and finally click "OK" to complete the configuration work Compass NTP network time server.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The remote login module NTP NTP view setting status (skippable)

   An input device in the browser, IP address (factory default: 192.168.1.133), will pop up the following screen:

 

 

 

 

 

 

 

 

 

 

Then click "Login" to enter the following picture:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

    With this menu, the system administrator can modify the IP address of the NTP server. You can set a password for security reasons, but be sure to remember your password. Otherwise remote could no longer log in, be returned for repair.

6. Client Software Installation

6.1 is compatible with existing client software

    NTP server NTP strictly follow the protocol, you can not install the client software provided with the product, the use of other existing client software. As windowXP interface, click on the lower the time, the pop-up below:

 

Need to choose "Internet time" property, followed by modification

Server IP address, then "Update Now"

Wait a moment, it will display the synchronization was successful.

Note: The default update period is seven days.

 

To change the update cycle, please do the following:

 1) Click the Start menu;

 2) Click on "Run", type in the command line

regedit.exe (registry program),

 3) Modify HKEY_LOCAL_MACHINE \

SYSTEM\ CurrentControlSet\ Services\

W32Time \ TimeProviders \ NtpClient \ SpecialPollInterval value,

 

In seconds, select Decimal. Reference values ​​are as follows:

 1 minute: 60; 5 minutes: 300;

30 minutes: 1800; 1 hour: 3600;

 6 hours: 21600; 12 hours: 43200;

   1 day: 86400; 7 days: 604 800.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

After entering synchronous interval time value, press "OK" button.

6.2  install the client software product

  Install the client software product (Widows or Linux), run Forever_NTP_XP.exe or Forever_NTP_Linux.sh, pop bottom left (Linux is similar):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1) Enter the server address: The 10.2.2.210, and then select the "automatic setting" pop top right:

 

2) pull-down "Select", selected from the cycle sync client (client synchronization interval), such as "1 hour", and then

    Click on the "Settings" will appear next chart information:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3) Click the icon in the upper right corner "-" hidden backstage.

7, satellite antenna installation

Satellite clock with an easy to install the antenna. As shown below, the active antenna housed within the first plastic disc, the antenna length is 30 meters, 50 meters, 80 meters, 100 meters several specifications, such as the 100 m length of the antenna can not meet the requirements, optional GPS signal repeaters is GPS-ZH, the antenna device is configured as a standard 30 m.

 

To install the antenna head outdoors, installation location should unobscured, installed on the roof as far as possible, in principle, antenna head down looking up to see the 360 ​​° of the sky, the cable length is based on the strict design the antenna gain, not cut, extend , shorten or add joints, otherwise it will seriously affect the reception or even no signal. The antenna should be avoided hillside, woods, high-rise buildings, towers, and other barrier for high voltage transmission lines of antenna beams. Should have sufficient field of view on the main beam direction of the antenna, the antenna should be as wide as possible in front of the viewing angle. General requirements for the antenna as a reference point, the highest point of the obstacle to an angle less than 10 degrees, the antenna may be set up to avoid the air to reduce the wind load of the antenna. In thunderstorm areas, erect position of the antenna should avoid lightning-prone locations, antenna head should be placed in the field lightning arrester range. When the antenna installed on the roof, as long as sufficient field of vision, from the roof above the smaller the better. Meanwhile, a dedicated antenna should be installed lightning, a lightning grounding system must be carefully checked whether the well (optional lightning protection device is a device) before thunder season comes, as indicated below the antenna installation diagram;