Meinberg IMS-MRI User manual

SETUP GUIDE
IMS-MRI
Hot-Plug Module
March 21, 2022
Meinberg Funkuhren GmbH & Co. KG

Table of Contents
1 Imprint 1
2 Change Log 2
3 Introduction 3
4 Important Safety Information 4
4.1 ProductDocumentation ........................................... 4
4.2 PreventionofESDDamage......................................... 5
4.3 PowerSupply................................................. 6
4.4 Cabling..................................................... 6
5 MRI Variants 7
6 Front Connectors IMS-MRI 8
6.1 IMS-MRI-StatusLEDs .......................................... 9
6.2 AMTimeCode(Modulated)Input ..................................... 10
6.3 DCLS Time Code (Unmodulated) Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.4 10MHzFrequencyInput .......................................... 11
6.5 PulseperSecondInput ........................................... 11
7 Front Connectors IMS MRI-FO 12
7.1 IMS-MRI-StatusLEDs .......................................... 13
7.2 AMTimeCode(Modulated)Input ..................................... 14
7.3 Time Code DCLS (unmodulated) Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.4 10MHzFiberOpticInput.......................................... 15
7.5 PPSFiberOpticInput............................................ 15
8 Before You Start 16
8.1 ContentsofDelivery............................................. 16
8.2 DisposalofPackagingMaterials...................................... 16
9 System Installation 17
9.1 Important Information Regarding Hot-Pluggable IMS Modules . . . . . . . . . . . . . . . . . . . . 17
9.2 Installation of Hot-Pluggable IMS Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10 Configuration and Status Monitoring 19
10.1ConfigurationofInputSignals ....................................... 19
10.2 Status Monitoring of the Input Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
11 Troubleshooting 21
12 Your Opinion Matters to Us 22
13 RoHS and WEEE 23
14 List of Abbreviations 24
Date: March 21, 2022 IMS-MRI

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: March 18, 2022
Manual
Version: 1.0
IMS-MRI Date: March 21, 2022 1

2 Change Log
Version Date Revision Notes
0.9 02/14/2020 Initial version
1.0 03/17/2022 Chap. 2, 5, 10, 11, 13 added
2 Date: March 21, 2022 IMS-MRI

3 Introduction
3 Introduction
This Setup Guide is a systematically structured guideline which supports you during the set-up of your Mein-
berg product.
The IMS-MRI (MRI=Multi Reference Input) provides four signal inputs: 1x Time Code AM, 1x Time Code
DCLS, 1x 10 MHz as well as 1x PPS. These input signals are made available to the IMS system as additional
reference signals. The signals can be monitored and selected in the "Clock" menu of the assigned clock module
after successful initialization.
Features.
As already mentioned above, an MRI module is assigned to a clock module and provides it with additional
reference signals. If additional reference signals should also be available for the second clock module in re-
dundant operation, it is necessary to add another MRI module for this purpose.
Example:
1x GPS Clock on CLK1 requires 1x MRI on MRI1
1x GPS Clock on CLK1 and 1x GNS Clock on CLK2 requires 1x MRI on MRI1 and 1x MRI on MRI2
The LTOS manual provides a complete description of all configurations and status monitoring options of your
Meinberg product.
Download LTOS7 Firmware manual:
http://www.mbg.link/doce-fw-ltos
Compatibility
The IMS-MRI is an IMS module that is compatible with the following systems of the IMS family and can
be used in the slots shown in the table down below.
PWR
CLK
CPU
MRI
ESI
I/O
M500
M1000
M1000 S
M2000 S
M3000
M3000 S
M4000
System Compatibility - IMS MRI
IMS System
Compatible
Compatible
IMS Slot
Slot Compatibility - IMS MRI
IMS-MRI Date: March 21, 2022 3

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:
•We recommend making a backup of any stored configurations (e.g. using a USB flash drive or from the
Web UI)
•Take note of the chapter "Prevention of ESD Damage".
•Take note of the chapter "Power Supply".
4.1 Product Documentation
Detailed product documentation is provided on a USB flash drive delivered with the Meinbeg 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 audience
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.
4 Date: March 21, 2022 IMS-MRI

4 Important Safety Information
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.
IMS-MRI Date: March 21, 2022 5

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 disconnec-
tion 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.
4.4 Cabling
WARNING!
Danger of death from electric shock! Never work on the system 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!
6 Date: March 21, 2022 IMS-MRI

5 MRI Variants
5 MRI Variants
The MRI module (MRI = Multi-Reference Input) is available in a number of different models. The standard
MRI modules provide the following signal input connectors, depending on the model in question:
MRI 4x BNC TC AM, TC DCLS, 10 MHz, PPS
MRI-FO 4x ST TC AM, TC DCLS, 10 MHz, PPS
MRI-FO-T 2x ST, 2x BNC TC AM, TC DCLS (ST) / 10 MHz, PPS (BNC)
The MRI-FO model is especially well-suited to transmission of MRS signals over long distances, with the
transmission of MRS signals over fiber-optic cable also making it much less susceptible to interference.
Before the amplitude-modulated IRIG AM signal can be fed into the FO input, it must first be
generated using a Meinberg "CON/TCM/FO" converter.
MRI MRI-FO MRI-FO-T
Technical Specifications of the MRI Module
Electrical Connector: DIN 41612 96-Pin Connector
Operating Voltage: +5 V DC
Current Draw: 100 mA
Temperature Range: 0–50 ◦C / 32–122 ◦F
Relative Humidity: Max. 85%
IMS-MRI Date: March 21, 2022 7

6 Front Connectors IMS-MRI
1
2
3
4
5
The numbering in the drawing above relates to the relevant subsection in this chapter.
8 Date: March 21, 2022 IMS-MRI

6 Front Connectors IMS-MRI
6.1 IMS-MRI - Status LEDs
Status display
LED St: Status of MRI in IMS-System
LED In: Synchronization status
LED A: Status of the input signals (TC-AM/DCLS)
LED B: Status of the input signals (10 MHz/PPS)
St In A B
The status messages of the LED’s are as follows:
LED St:
Blue During initialization
Green During operation
LED In.
Shows the state after initialisation
Green MRI successfully initialized
LED A - Status TC-AM and TC-DCLS
This LED will usually display the following color pattern when the IMS system is booted:
1 sec red -> 1 sec yellow -> 1 sec green -> 1 sec off
Green light TC-AM and/or TC-DCLS signal is available
Yellow light TC-AM and/or TC-DCLS signal is not available
LED B - Status 10 MHz and PPS
This LED will usually display the following color pattern when the IMS system is booted:
1 sec Red -> 1 sec Yellow -> 1 sec Green -> 1 sec Off
Green light 10 MHz and/or PPS signal is available
Yellow light 10 MHz and/or PPS signal is not available
IMS-MRI Date: March 21, 2022 9

6.2 AM Time Code (Modulated) Input
Input Signal: Unbalanced Sine Wave Signal
Signal Level: 800 mVpp /8Vpp (MARK/SPACE)
600 ΩTermination
Time Code Signale: B122/123, B126/127
IEEE1344
C37.118
AFNOR NFS 87-500
Insulation Voltage: 3000 V DC
Connector Type: BNC Female, Insulated
Cable: Coaxial Cable, Shielded
TC AM In
6.3 DCLS Time Code (Unmodulated) Input
Input Signal: DCLS Time Code, Pulse-Width
Modulated (e.g., IRIG-B00x)
Time Code Signale: B002/003, B006/007
IEEE1344
C37.118
AFNOR NFS 87-500
Insulation Voltage: 3750 Vrms
Typ. Input voltage: 5 V DC
Max. Input Current: 60 mA
Internal Resistor: 220 Ω
Connector Type: BNC Female, Insulated
Cable: Coaxial Cable, Shielded
TC DCLS In
10 Date: March 21, 2022 IMS-MRI

6 Front Connectors IMS-MRI
6.4 10 MHz Frequency Input
Input Signal: 10MHz Frequency
Signal Level: Sine Wave (1.5 Vpp -5Vpp) or TTL
Connector Type: BNC Female
Cable: Coaxial Cable, Shielded
Freq. In
6.5 Pulse per Second Input
Input Signal: PPS (Pulse per Second)
Signal Level: TTL
Pulse Length: ≥5µs, Active High
Connector Type: BNC Female
Cable: Coaxial Cable, Shielded
PPS In
IMS-MRI Date: March 21, 2022 11

7 Front Connectors IMS MRI-FO
1
2
3
4
5
12 Date: March 21, 2022 IMS-MRI

7 Front Connectors IMS MRI-FO
7.1 IMS-MRI - Status LEDs
Status display
LED St: Status of MRI in IMS-System
LED In: Synchronization status
LED A: Status of the input signals (TC-AM/DCLS)
LED B: Status of the input signals (10 MHz/PPS)
St In A B
The status messages of the LED’s are as follows:
LED St:
Blue During initialization
Green During operation
LED In.
Shows the state after initialisation
Green MRI successfully initialized
LED A - Status TC-AM and TC-DCLS
This LED will usually display the following color pattern when the IMS system is booted:
1 sec red -> 1 sec yellow -> 1 sec green -> 1 sec off
Green light TC-AM and/or TC-DCLS signal is available
Yellow light TC-AM and/or TC-DCLS signal is not available
LED B - Status 10 MHz and PPS
This LED will usually display the following color pattern when the IMS system is booted:
1 sec Red -> 1 sec Yellow -> 1 sec Green -> 1 sec Off
Green light 10 MHz and/or PPS signal is available
Yellow light 10 MHz and/or PPS signal is not available
IMS-MRI Date: March 21, 2022 13

7.2 AM Time Code (Modulated) Input
Input Signal: Unbalanced Sine Wave Signal
Input Type Fiber optic (FO), Multi mode
Time Code Signals: B122/123, B126/127
IEEE1344
C37.118
AFNOR NFS 87-500
Wave lenght 850 nm
Min. Input Power: 3µW
To ensure reliable signal detection, the input signal
should not fall below the specified value.
Connector Type: ST Connector
Type of fiber: GI 50/125µm or
62,5µm gradient fibre
7.3 Time Code DCLS (unmodulated) Input
Input Signal: Time code DCLS, pulse width modulated.
(e.g. IRIG-B00x)
Input Type: Fiber Optic (FO), Multimode
Time code signals: B002/003, B006/007
IEEE1344
C37.118
AFNOR NFS 87-500
Wave length: 850 nm
Min. input power: 3µW
To ensure reliable signal detection, the input signal
should not fall below the specified value.
Connection type: ST connector.
Fiber type: GI 50/125 µm or
62.5/125 µm gradient fiber
14 Date: March 21, 2022 IMS-MRI

7 Front Connectors IMS MRI-FO
7.4 10 MHz Fiber Optic Input
Input Signal: 10 MHz Frequency
Input Type: Fiber Optic (FO), Multimode
Wave Lenght: 850 nm
Min. Input Power: 3µW
To ensure reliable signal detection, the input signal
should not fall below the specified value.
Connection Type: ST Connector
Fiber Type: GI 50/125 µm oder
62,5/125 µm gradient fiber
7.5 PPS Fiber Optic Input
Input Signal: PPS (Pulse per Second)
pulse length: ≥5µs, active high
Input Type: Fiber Optic (FO), Multimode
Wave Lenght: 850 nm
Min. Input Power: 3µW
To ensure reliable signal detection, the input signal
should not fall below the specified value.
Connection Type: ST Connector
Fiber Type: GI 50/125 µm oder
62,5/125 µm gradient fiber
IMS-MRI Date: March 21, 2022 15

8 Before You Start
8.1 Contents of Delivery
Unpack the IMS-MRI 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.
8.2 Disposal of Packaging Materials
The packaging materials we use are fully recyclable:
Material Use for Disposal
————————————————————————————————————————
Cardboard Shipping, Paper recycling
packaging of accessories
Plastic Wrapping Shipping, Household waste or
packaging of accessories recycling depot
————————————————————————————————————————
16 Date: March 21, 2022 IMS-MRI

9 System Installation
9 System Installation
9.1 Important Information Regarding Hot-Pluggable IMS Modules
The following information should be strictly observed when replacing IMS modules during operation. Not all
IMS modules are fully hot-pluggable. For example, it is naturally not possible to replace a power supply unit in
a system without PSU redundancy without first having installed a second power supply unit while the system
is in operation.
The following rules apply for the individual IMS slots:
PWR Slot: "Hot-Swappable" If you operate your system with only one power supply unit,
a second power supply unit must be installed before removing
or replacing it in order to keep your system on.
I/O, ESI and
MRI Slots: "Hot-Pluggable".
CLK1/CLK2 "Hot-Pluggable" When a clock module is replaced or installed, it is important to rescan
Slots: the reference clocks ("Rescan Refclocks") in the "System" menu
of the Web Interface.
RSC/SPT Slots: "Hot-Pluggable" It will not be possible for your IMS system to switch between signal
generators while the RSC/SPT is not installed.
——————————————————————————————————————————————
CPU Slot: "Not Hot-Pluggable" Before the CPU is removed, the IMS system must be powered down.
Please note that after powering on and rebooting the LANTIME
Operating System, the configuration of some IMS modules may be reset
to factory defaults!
The NTP service and access to the web interface will be unavailable while the CPU
is not installed. Management and monitoring functions will also be disabled.
IMS-MRI Date: March 21, 2022 17