Meinberg IMS-GNS182 User manual

SETUP GUIDE
IMS-GNS182
Hot-Plug Module
July 27, 2022
Meinberg Funkuhren GmbH & Co. KG

Table of Contents
1 Imprint 1
2 Change Log 2
3 Introduction 3
4 Important Safety Information 5
4.1 ProductDocumentation ........................................... 5
4.2 PreventionofESDDamage......................................... 6
4.3 PowerSupply................................................. 7
4.4 HandlingofBatteries ............................................ 8
4.5 Cabling..................................................... 9
5 IMS-GNS182 Variants 10
6 IMS-GNS182 Module Connectors and LEDs 12
6.1 Status-LEDs ................................................. 13
6.2 COMxTimeString:RS-232 ........................................ 14
6.3 XHE-SPI ................................................... 14
6.4 GNSSAntenna................................................ 15
7 Before You Start 16
7.1 ContentsofDelivery............................................. 16
7.2 DisposalofPackagingMaterials...................................... 16
8 Installation of the Multi-GNSS Antenna 17
8.1 AntennaShortCircuit ............................................ 22
9 Installation of the Module 23
9.1 Important Information Regarding Hot-Pluggable IMS Modules . . . . . . . . . . . . . . . . . . . . 23
9.2 Installation and Removal of Hot-Pluggable IMS Modules . . . . . . . . . . . . . . . . . . . . . . . 24
9.3 DataandSignalCables........................................... 26
10 Initial Configuration 27
10.1RequiredConfiguration ........................................... 27
11 Troubleshooting 30
12 Technical Appendix 31
12.1 Technical Specifications: GNSS Multi-Band Antenna . . . . . . . . . . . . . . . . . . . . . . . . . 31
12.2 Technical Specifications: RV-76G GPS/GLONASS Antenna for Mobile Applications . . . . . . . 33
12.3 Technical Specifications: MBG S-PRO Surge Protection . . . . . . . . . . . . . . . . . . . . . . . 35
12.3.1 MBG S-PRO: Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
12.3.2 InstallationandGrounding..................................... 37
12.4 Technical Specifications: Antenna Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
12.5HowSatelliteNavigationWorks...................................... 37
12.5.1 Time Zones and Daylight Saving Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
13 Your Opinion Matters to Us 39
14 RoHS and WEEE 40
15 List of Abbreviations 41
Date: July 27, 2022 IMS-GNS182

1 Imprint
1 Imprint
Meinberg Funkuhren GmbH & Co. KG
Lange Wand 9, 31812 Bad Pyrmont, Germany
Phone: + 49 (0) 52 81 / 93 09 - 0
Fax: + 49 (0) 52 81 / 93 09 - 230
Website: https://www.meinbergglobal.com
Email: [email protected]
Date: July 26, 2022
Manual
Version: 1.0
IMS-GNS182 Date: July 27, 2022 1

2 Change Log
Version Date Revision Notes
———————————————————————————————————————————————
1.0 07/26/2022 Initial version
———————————————————————————————————————————————
2 Date: July 27, 2022 IMS-GNS182

3 Introduction
3 Introduction
This Setup Guide is a systematically structured guideline to assist you with the set-up of your Meinberg product.
The IMS-GNS182 is a 72-channel satellite clock module with GNSS technology that has been developed
from the ground up specifically for time and frequency synchronization purposes. The IMS-GNS182 provides
a high-precision, high-accuracy time and frequency reference for your Meinberg IMS system and is designed
to receive signals from the U.S. Global Positioning System (GPS), European Galileo, Chinese BeiDou, and
Russian GLONASS systems, allowing your Meinberg system to be used anywhere in the world.
How It Works
Once the IMS-GPS182 is successfully initialized and synchronized, it distributes a 1PPS (pulse per sec-
ond) reference clock signal and a 10 MHz reference frequency. These are then used by the IMS output modules
to generate a wide variety of specific output signals used in a diverse range of applications. The precision and
accuracy of the two aforementioned reference signals are critical in determining the corresponding precision
and accuracy of the output signals.
Use of Two IMS Receiver Modules
In systems equipped with two redundant IMS receiver modules, an RSC switchover module is used to switch
between the two reference sources. The RSC serves to switch over the pulse and frequency outputs and serial
interfaces of the connected reference clocks.
Compatibility
The IMS-GNS182 is an IMS module that is compatible with all of the current systems in the IMS family:
M500
M1000
M1000S
M2000S
M3000
M3000S
M4000
System Compatibility - IMS-GNS182
IMS System
Compatible
The module can only be used in the CLK slot of your IMS system:
PWR
CLK
CPU
MRI
ESI
I/O
Compatible
IMS Slot
Slot Compatibility - IMS-GNS182
To eliminate any risk of compatibility problems, your IMS system should have at least LANTIME OS Version
7.06 installed.
IMS-GNS182 Date: July 27, 2022 3

Manual Revisions
Meinberg products are subject to ongoing development even after their market release, with new features
and enhancements added on a regular basis via firmware and software updates. Meinberg also revises its
product manuals to account for these feature updates.
This version of the manual has been prepared based on the feature set provided by Firmware Version 2.76 of
your IMS-GNS182 as well as LANTIME OS Version 7.06. When using a LANTIME system or IMS module
with different versions, there may be noticeable differences, for example in the presentation and availability of
options in the Web Interface as shown in Chapter 10 ("Initial Configuration").
Further Reading
This brief Setup Guide only provides the information required to quickly set up your module in your IMS
system with a minimum of problems. We recommend also carefully studying the following manuals alongside
this Setup Guide for the use of your IMS-GNS182:
Meinberg IMS System Manuals http://www.mbg.link/doc-en
LANTIME OS Version 7 Firmware Manual http://www.mbg.link/docg-fw-ltos
The LANTIME OS firmware manual in particular provides a detailed description of all configuration and status
monitoring options available for your Meinberg product.
4 Date: July 27, 2022 IMS-GNS182

4 Important Safety Information
4 Important Safety Information
Please ensure that IMS modules designed for "hot-plugging" (modules that are removable and insertable while
a system is in operation) are always handled with the utmost care.
Before performing any maintenance work on the system, Meinberg recommends:
•backing up stored configurations (e.g., via USB flash drive or the Web Interface)
•taking note of the chapter "Prevention of ESD Damage".
•taking note of the chapter "Power Supply".
4.1 Product Documentation
Detailed product documentation is provided on a USB flash drive delivered with the Meinberg system. The
manuals can also be downloaded from the Meinberg website at https://www.meinbergglobal.com, where you can
enter your system name into the search box at the top of the page to find the relevant manual. Alternatively,
contact Meinberg Support for further assistance.
The "Docs & Support" menu on the Web Interface also provides user manuals for time server administrators.
This manual contains important safety instructions for the installation and operation of the
device. Please read this manual thoroughly before using the device.
This device may only be used for the purpose described in this manual. In particular, the
specified operating limits of the device must be heeded. The person setting up the device is
responsible for safety matters in relation to any larger system in which the device is
installed!
Failure to observe these instructions may have an adverse impact on device safety!
Please keep this manual in a safe place.
Target Readership
This manual is only intended to be used by qualified electricians, or by persons who have been appropri-
ately instructed by a qualified electrician and who are familiar with applicable national standards and with
safety rules & regulations. This device may only be installed, set up, and operated by qualified personnel.
IMS-GNS182 Date: July 27, 2022 5

4.2 Prevention of ESD Damage
ATTENTION!
An ESDS device (electrostatic discharge-sensitive device) is any device at risk of damage or
malfunction due to electrostatic discharges (ESD) and thus requires special measures to prevent
such damage or malfunction. Systems and modules with ESDS devices usually bear the following
symbol:
Symbol Indicating Devices with ESDS Components
The following measures will help to protect ESDS components from damage and malfunction.
When preparing to dismantle or install devices:
Ground your body (for example, by touching a grounded object) before touching sensitive devices.
Ensure that you wear a grounding strap on your wrist when handling such devices. These straps must
in turn be attached to an uncoated, non-conductive metal part of the system.
Use only tools and devices that are free of static electricity.
When transporting devices:
Devices must only be touched or held by the edges. Never touch any pins or conductors on the device.
When dismantling or installing devices:
Avoid coming into contact with persons who are not grounded. Such contact may compromise your
connection with the earth conductor and thus also compromise the device’s protection from any
static charges you may be carrying.
When storing devices:
Always store devices in ESD-proof ("antistatic") bags. These bags must not be damaged in any way.
ESD-proof bags that are crumpled or have holes cannot provide effective protection against
electrostatic discharges.
ESD-proof bags must have a sufficient electrical resistance and must not be made of conductive
metals if the device has a lithium battery fitted on it.
6 Date: July 27, 2022 IMS-GNS182

4 Important Safety Information
4.3 Power Supply
WARNING!
The IMS system in which the module is used is operated at a dangerous voltage. Please
refer to your IMS Manual for more information about safety.
When removing a hot-pluggable power supply unit, always disconnect its power cable before
removing it from the IMS system.
Never open a power supply unit—there may still be hazardous residual voltages
present even after disconnection from the mains supply. In the event that a power supply
unit is no longer working (e.g. defective), please return it to Meinberg for repair.
Failure to observe these safety instructions may result in serious injury and/or property
damage. The IMS system must only be installed, set up, and operated by qualified
personnel.
IMS-GNS182 Date: July 27, 2022 7

4.4 Handling of Batteries
WARNING!
The lithium battery on the receiver modules has a life of at least ten years. Should it be
necessary to replace it, please note the following:
Improper handling of the battery can lead to an explosion or to a leakage of flammable liquids or
gases.
•Never short-circuit the battery.
•Never attempt to recharge the battery.
•Never throw the battery into a fire.
•The battery must only be exposed to the barometric pressure range specified by the battery
manufacturer.
•The battery must only ever be replaced with one of the same type or a comparable type
recommended by the manufacturer. The battery must only be replaced by the manufacturer or
an authorized technician.
•Never dispose of the battery in a mechanical crusher or shredder, or in an open fire or
furnace.
Please consult your local waste disposal regulations for information on how to dispose of
hazardous waste.
IMPORTANT!
The battery is used to power components such as the RAM and the reserve real-time backup
clock for the reference clock.
If the battery voltage drops below 3 V DC, Meinberg recommends having the battery replaced.
If the battery voltage drops below the specified minimum, the following behavior may be
observed in the reference clock:
•The reference clock may have the wrong date or wrong date upon power-up
•The reference clock repeatedly starts in Cold Boot mode
•Some of the configurations saved for the reference clock may be lost
8 Date: July 27, 2022 IMS-GNS182

4 Important Safety Information
4.5 Cabling
WARNING!
Danger of death from electric shock! Never work on cables while the power is live!
Always disconnect the cables from the devices at both ends before working on
the plugs and terminals of connected cables!
IMS-GNS182 Date: July 27, 2022 9

5 IMS-GNS182 Variants
There are several models of the IMS-GNS182 that each vary in terms of the connectors and interfaces provided
as follows:
Module Size Connectors/Interfaces
IMS-GNS182 4 HP 1x SMA antenna connector, 1x COM (standard)
IMS-GNS182 4 HP 1x SMA antenna connector, 1x XHE-SPI interface
(for connection to XHERb)
IMS-GNS182 8 HP 1x SMA antenna connector, 1x COM, 1x XHE-SPI interface
(for connection to XHERb)
IMS-GNS182 8 HP 1x SMA antenna connector, 1x COM, DHQ oscillator
The models with XHE-SPI interfaces are used in applications where the IMS system is to be integrated with
an XHERb system for high-accuracy holdover synchronization performance.
Left to right: IMS-GNS182 4 HP standard model, IMS-GNS182 4 HP with XHE-SPI, IMS-GNS182 8 HP
with COM + XHE-SPI, IMS-GNS182 8 HP with DHQ oscillator (without XHE-SPI)(
Important!
Installing an IMS-GNS182 module with an 8 HP faceplate in an M500, M1000, or M1000S IMS
system will result in the adjacent slot (I/O, MRI, or Clock) being obscured and thus unavailable
for another IMS module. Please note this when ordering a new IMS system or additional modules
for your IMS system.
10 Date: July 27, 2022 IMS-GNS182

5 IMS-GNS182 Variants
IMS-GNS182 Module Technical Specifications
Electrical Connector: 96-Pin DIN 41612 Connector
Operating Voltage: +5 V DC
Current Draw: Approx. 450 mA (depending on the used oscillator)
Temperature Range: 0–50 ◦C
Relative Humidity: Max. 85 %
IMS-GNS182 Date: July 27, 2022 11

6 IMS-GNS182 Module Connectors and LEDs
1
2
4
3
Information:
The numbering in the drawing above relates to the relevant subsection in this chapter.
12 Date: July 27, 2022 IMS-GNS182

6 IMS-GNS182 Module Connectors and LEDs
6.1 Status-LEDs
Statusanzeige
LED "In": Initialization status of clock
in operating system
LED "Nav": Geolocation status
LED "Ant": Antenna status
LED "Fail": Synchronization status
Fail Ant. Nav. Init.
The LEDs show the following colors to indicate the following states:
"In" LED - System Status
Blue Internal operating system is initializing clock
Grün Internal operating system has initialized the clock
and the oscillator is warmed up
———————————————————————————————————————————————–
"Nav." LED - Navigation Status
Shows the status after initialization by the operating system
Green, not flashing Position determination using GNSS satellites successful
———————————————————————————————————————————————–
"Ant." LED - Antenna Status
Red, not flashing The antenna has a fault or is not correctly connected
Yellow, not flashing The receiver is synchronized via an external signal in
MRS mode (PPS, IRIG, etc.)
———————————————————————————————————————————————–
"Fail" LED - IMS-GNS182 Status
Red, not flashing The clock is in free-run mode and is running solely
off the oscillator (holdover state)
IMS-GNS182 Date: July 27, 2022 13

6.2 COMx Time String: RS-232
Data Transfer: Serial
Baud Rate/Framing: 19200 / 8N1 (Default)
Time String: Meinberg Standard (Default)
Assignment:
Pin 2: RxD (Receive)
Pin 3: TxD (Transmit)
Pin 5: GND (Ground)
Connection Type: D-Sub Male 9-Pin
Cable: RS-232 Cable (Shielded)
15
6 9
6.3 XHE-SPI
Pin Assignment of the optional XHE-SPI Connector:
A1: PPS In
A2: PPS Out
Pin 1: SCL_Out (SPI Clock)
Pin 2: CS (Chip Select)
Pin 3: MOSI (Master Out, Slave In)
Pin 4: MISO (Master In, Slave Out)
Pin 5: GND
1
3
5
A1
A2
PPS Out
PPS In
GND
CS
MISO
SCL
MOSI
Important!
This connector must only be used to connect a Meinberg IMS-XHERb Rubidium expansion chassis.
14 Date: July 27, 2022 IMS-GNS182

6 IMS-GNS182 Module Connectors and LEDs
6.4 GNSS Antenna
Antenna Type: Multi GNSS L1 Antenna with
Integrated Lightning Protection
Receiver Type: 72-Channel Receiver
GPS/GLONASS/Galileo/BeiDou
Signal Support: GPS: L1 C/A (1575.42 MHz)
Galileo: E1-B/C (1575.42 MHz)
BeiDou: B1I (1561.098 MHz)
GLONASS: L1OF (1602 MHz +
k*562.5 kHz)
where krepresents the channel number
(in the range -7 to 6) within the
corresponding GLONASS frequency band
Signal Gain: 40 dB
Antenna Gain: ≥3.5 dBic / ≥3 dBic
DC Voltage: 5 V (Power Supply via Antenna Cable)
DC Current: Max. 100 mA
Rated Impedance: 50 Ohm
Connection Type: SMA Female
Cable: Coaxial Cable, Shielded
Cable Length: Max. 70 m with Belden H155 Coaxial Cable
Danger!
Do not work on the antenna system during thunderstorms!
Danger of death from electric shock!
•Do not carry out any work on the antenna system or the antenna cable if there is a risk of
lightning strike.
•Do not carry out any work on the antenna system if it is not possible to maintain the
prescribed safe distance to exposed lines and electrical substations.
IMS-GNS182 Date: July 27, 2022 15

7 Before You Start
7.1 Contents of Delivery
Unpack the IMS-GNS182 carefully and check the contents of the delivery against the enclosed packing list to
ensure that no parts are missing. If any of the listed items are missing, please contact our sales department:
[email protected]
Check that the product has not been damaged in transit. If the product is damaged or fails to operate upon
installation, please contact Meinberg immediately. Only the recipient (the person or company receiving the
system) may file claims or complaints against the forwarder for damage caused in transit.
Meinberg recommends that you keep the original packaging materials in case the product needs to be shipped
or transported again at a later date.
7.2 Disposal of Packaging Materials
The packaging materials we use are fully recyclable:
Material Used for Disposal
————————————————————————————————————————
Cardboard Shipping, Paper recycling
packaging of accessories
Plastic Wrapping Shipping, Household waste or
packaging of accessories recycling depot
————————————————————————————————————————
16 Date: July 27, 2022 IMS-GNS182

8 Installation of the Multi-GNSS Antenna
8 Installation of the Multi-GNSS Antenna
Danger!
Do not mount the antenna without an effective fall arrester!
Danger of death from falling!
•Ensure that all necessary safety measures are taken when installing an antenna!
•In particular, never work without an effective fall arrester!
Danger!
Do not work on the antenna system during thunderstorms!
Danger of death from electric shock!
•Do not carry out any work on the antenna system or the antenna cable if there is a risk of
lightning strike.
•Do not carry out any work on the antenna system if it is not possible to maintain the
prescribed safe distance to exposed lines and electrical substations.
Selecting the Antenna Location
To avoid difficulties with synchronization, select a location that allows for an unobstructed view of the sky
so as to ensure that enough satellites can be found. The line of sight between the antenna and satellites should
not be obstructed in any way. The antenna must also not be installed under power lines or other electrical
lighting or power circuits.
Installation Conditions for Optimum Operation:
•clear view of 8◦above the horizon or
•clear view towards equator (if clear view of 8◦not possible) or
•clear view between 55th north and 55th south parallels (satellite orbits).
Information:
Problems may arise if all of these views are obstructed, as four satellites must be located to
calculate a new position.
IMS-GNS182 Date: July 27, 2022 17