Meinberg IMS-FDM User manual

MANUAL
IMS-FDM Setup Guide
Hot-Plug Module
March 15, 2022
Meinberg Funkuhren GmbH & Co. KG

Table of Contents
1 Imprint 1
2 Important Safety Information 2
2.1 AdditionalSafetyInformation........................................ 2
2.2 PreventionofESDDamage......................................... 3
2.3 PowerSupply................................................. 4
2.4 Cabling..................................................... 4
3 Replacement or Installation of a Hot-pluggable IMS Module 5
3.1 Important Information Regarding Hot-Pluggable IMS Modules . . . . . . . . . . . . . . . . . . . . 6
4 FDM - Frequency Deviation Monitoring 7
4.1 FDM Configuration via Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.1 FDMConfiguration ......................................... 9
4.1.2 FDMStatus ............................................. 15
4.1.3 FDMInformation .......................................... 16
4.1.4 SerialFDMTelegrams ....................................... 17
4.1.5 Error-Bits............................................... 22
Date: March 15, 2022 IMS-FDM Setup Guide

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 15, 2022
IMS-FDM Setup Guide Date: March 15, 2022 1

2 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".
2.1 Additional Safety Information
This manual contains important safety information regarding the installation and use of the device. Please read
it through fully before setting up the device for use.
This device may only be used for the purpose described in this manual. In particular, the specified operat-
ing 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 and accessible place.
Target Readership
This manual is only intended to be used by qualified electricians, or by persons who have been appropriately
instructed by qualified electricians and who are familiar with applicable national standards and safety rules &
regulations, especially in relation to the installation of low-voltage (< 1000 V) installations.
2 Date: March 15, 2022 IMS-FDM Setup Guide

2 Important Safety Information
2.2 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-FDM Setup Guide Date: March 15, 2022 3

2.3 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.
2.4 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!
4 Date: March 15, 2022 IMS-FDM Setup Guide

3 Replacement or Installation of a Hot-pluggable IMS Module
3 Replacement or Installation of a Hot-pluggable
IMS Module
If the system is supplied with an antenna and antenna cable, it is advisable to first mount the antenna in a
suitable location (see chapter Antenna Mounting) and lay the antenna cable.
Please use a Torx screwdriver (T8 x 60) for removal and installation of the module.
1. Follow the safety instructions at the beginning
of this manual!
2. Remove the two marked Torx screws from the
module holder plate or the cover plate of
the empty slot.
3. Note when removing!
Pull the module carefully out of the guide
rail. Note that the module is firmly anchored
in the connector block of the housing. You need
a certain amount of force to release the module
from this link. Once the connection to the
connector block of the system’s backplane is
loosened, the module can be easily pulled out.
4. Note during installation!
Please ensure that the module is correctly inserted into the two guide rails of the system housing
as otherwise damage to the module and the housing could be caused. Make sure that the module is
securely locked into the connector block before you fasten the two screws.
5. Now you can put the installed module into operation.
Attachment points of an 1U IMS system
IMS-FDM Setup Guide Date: March 15, 2022 5

3.1 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.
6 Date: March 15, 2022 IMS-FDM Setup Guide

4 FDM - Frequency Deviation Monitoring
4 FDM - Frequency Deviation Monitoring
The module FDM180 was designed to calculate and
monitor the frequency and its deviation in 50/60Hz
power line networks.
A preconnected reference is necessary that provides a
serial time string and a PPS (pulse per second). The
accuracy of the measurements is derived from these
signals. The module calculates the frequency as well
as the time, based on the mains frequency. The time
deviation (TD) is the difference of this calculated time
(PLT) to the reference time (REF). This time deviation
as well as the frequency itself is sent out via serial
interface or is beeing converted to an analog voltage
output provided by a DAC.
Pin Assignement: 16-pin DMC Phoenix Connector
Pin Signal
——————————————————-
Pin 1 A0
Pin 2 A1
Pin 3 GND
Pin 4 n.c.
Pin 5 n.c.
Pin 6 GND
Pin 7 COM 0 RxD in
Pin 8 COM 0 TxD out
Pin 9 - Pin 14 GND
Pin 15 COM 1 RxD in
Pin 16 COM 1 TxD out
——————————————————-
LED Indicator
LED St: Init blue during inintialisation
green - normal operation
LED In: shows the state after initialisation
red ref not connected / FDM not sync
yellow ref. signal not useable
green blinking Timesync
green Accurate (≤200 ns to reference)
LED A: green FD (Frequency Deviation) within the configured limits
red FD Overflow
LED B: green TD (Time Deviation) within the configured limits
red TD Overflow
IMS-FDM Setup Guide Date: March 15, 2022 7

Input signal: Serial time string, PPS
mains frequency, 70 - 270 V AC, 50 Hz or 60 Hz
Interface: Two asynchronous serial RS-232 ports, COM0 and COM1
Baudrate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 Baud
Framing: 7N2, 7E1, 7E2, 8N1, 8N2, 8E1, 7O2
output and average: once per second or 100ms
Output string: The frequency, frequency deviation, reference time, power line time
and the time deviation are send out in different available formats.
The formats are:
STANDARD FDM String:
F:49.984 FD:-00.016 REF:15:03:30 PLT:15:03:30.368 TD:+00.368[CR][LF]
SHORT FDM String:
FD:-00.016 TD:+00.368[CR][LF]
AREVA FDM String:
[STX]
02049.984[CR][LF]
021-00.016[CR][LF]
022+00.378[CR][LF]
02315 03 30.368[CR][LF]
024068 15 03 30 [CR][LF]
[ETX]
Resolution of
Measurement: frequency: accuracy the oscillator (10 MHz) +-100 µHz
time deviation: accuracy of reference (PPS) +- 1 ms
Analog outputs: 2 analog outputs for longtime-recording (time deviation and/or frequency deviation),
range: -2.5 V ... +2.5 V, resolution: 16 Bit
Electrical connectors: 96-pin VG-rail DIN 41612
Power supply: +5 V DC
Current consumption: 0.4A-1A
Ambient temperature: 0 ... 50 ◦C / 32 ... 122 ◦F
Humidity: Max. 85%
8 Date: March 15, 2022 IMS-FDM Setup Guide

4 FDM - Frequency Deviation Monitoring
4.1 FDM Configuration via Web Interface
4.1.1 FDM Configuration
Automatic Monitoring of Powerline Frequency
It is possible to define an upper and lower limit for the powerline frequency and receive alarm messages (email,
syslog, SNMP traps) when a LANTIME detects that the frequency measurement value is outside the acceptable
range.
With the FDM configuration menu the following parameters can be set:
Line Frequency: Configure frequency of the observed power line
Min Frequency: An error occurs if the frequency reaches the min constraint
Max Frequency: An error occurs if the frequency reaches the max constraint
Max Negative Time Deviation: An error occurs if the frequency reaches the max negative constraint
Max Positive Time Deviation: An error occurs if the frequency reaches the max positive constraint
Timezone: Used local timezone for reference time and powerline time
Activate Logging: Activate logging for FDM in XtraStats
Reset FDM To restart the device
IMS-FDM Setup Guide Date: March 15, 2022 9

Configuration of serial ports
Baud Rate For the transmission of serial time telegrams
600, 1200, 2400, 4800, 9600, 19200
Framing 7N2, 7E1, 7E2, 7E2, 8N1 ,8N2, 8E1, 7O2 ,8O1
String Type Type of generated serial time telegram:
Standard, Short, Areva (TTM1), TPC (TTM2),
Standard 2, Computime, Fingrid, FDM III
The standard FDM telegram format contains the following values:
mains frequency (FF.xxx Hz)
frequency deviation (+-FF.xxx Hz)
reference time (HH:MM:SS)
power line time (HH:MM:SS.mmm)
time deviation (+-SS.mmm) - as of 99,999 ms (+-SSS.mmm)
Mode Per second, per minute or on request
10 Date: March 15, 2022 IMS-FDM Setup Guide

4 FDM - Frequency Deviation Monitoring
Analog Outputs
The FDM180 provides two analog outputs (A1/A2), which are provided via a DFK-3 socket, depending on
the system. These outputs have a voltage range of -2.5V ... + 2.5V, divided into 65,536 steps (16-bit resolution).
Either the frequency deviation or the difference time of each analog output can be selected as display-value.
Mode:
Time deviation: Depending on the defined limits for min. and max. time deviation.
Example: min: -100 s and max: +100 s. If a time deviation of -100 s is reached,
the analog output delivers a voltage of -2.5 V and with a deviation of +100 s,
+2.5 V with a resolution of 16bit DAC.
Frequency deviation: Depending on the defined limits for min. and max. frequency deviation.
Example: min: 45 Hz and max: 55 Hz at 50 Hz mains frequency. If a frequency
deviation of 45 Hz is reached, the analog output supplies a voltage of -2.5 V
and at 55 Hz, +2.5 V with a resolution of 16bit DAC.
IMS-FDM Setup Guide Date: March 15, 2022 11

Submenu Set TDEV
Time Deviation Enter a value to preconfigure the time deviation "0" for the reset.
(Example: In an M3000 system you add another FDM module to an existing
FDM module and want both modules to have the same time deviation value).
12 Date: March 15, 2022 IMS-FDM Setup Guide

4 FDM - Frequency Deviation Monitoring
Submenu New Receiver
In this section, the user can add a new receiver for FDM telegrams. Any number of receivers (network displays
and/or PCs for analysis and display of status messages or frequencies), which are connected to the same net-
work, can be configured here.
Receiver Type Type of telegram for the network transmission
Standard: Standard FDM time telegram
Sent once per second
i.e. "F:50.016 FD:+00.016 REF:15:17:57 PLT:15:17:57.056 TD:+00.056"
Extended: Extended FDM time telegram with intermediate measurements and sequence ID
Sent once per second
i.e. "F:50.006 F:50.004 F:50.013 F:50.012 F:50.010 F:50.010 F:50.006 F:50.012 F:50.020"
or "F:50.013 FD:+00.013 REF:15:19:10 PLT:15:19:10.071 TD:+00.071 SEQ:0000000004"
Intermediate: Truncated FDM time telegram with intermediate measurements
Sent once per 100ms
M1:49.997 SEQ:0000000053
M2:49.996 SEQ:0000000054
M3:50.000 SEQ:0000000055
M4:49.999 SEQ:0000000056
M5:49.996 SEQ:0000000057
M6:49.996 SEQ:0000000058
M7:49.997 SEQ:0000000059
M8:49.995 SEQ:0000000060
M9:49.996 SEQ:0000000061
M9:49.996 SEQ:0000000062
Custom: Customized FDM time telegram, which consists of prefix, string and suffix
Sent once per second
Address: Address or host name of the message recipient (display or computer)
Port: Used TCP/UDP port for telegram transmission
Transport
Protocol: Used protocol for telegram transmission (TCP/UDP)
IMS-FDM Setup Guide Date: March 15, 2022 13

Only if receiver type "Custom" is selected
Prefix: Prefix of customized strings, control characters can be specified
by their hex value (ASCII), for example:
"\x01" for SOH (Start of Header) or "\x02" for SOT (Start of Text)
String: Customized time telegram, which can be composed of arbitrary text
and the following variables (identified by the prefix ’%’):
PLFRQ Power Line Frequency (i.e. 50.023)
FRQDEV Frequency Deviation (i.e. +00.023)
REFTIME Referenc Time (i.e. 15:17:23)
POWERLNTIME Power Line Time (i.e.. 15:17:22.550)
PLTDEV Power Line Time Deviation (i.e. -00.450)
IDX Intermediate Measurement Index (i.e. 1)
IMMFRQ1 Intermediate Measurement Frequency with Index 1 (i.e. 50.034)
IMMFRQ2 Intermediate Measurement Frequency with Index 2 (i.e. 50.034)
...
SEQID Sequence ID (i.e. 0000000061)
SYSTIME System Time (i.e. 15:17:23)
SYNCSTATE Synchronization Status (’ ’ = synchronized, ’*’ = unsynchronized)
SYNCTEXT Synchronization Text („OK“ = synchronized, „NO“ = unsynchronized)
TIMESTAMP Current Timestamp (i.e. 2016-03-15 16:03:10.042)
TIMESTRING Time string to set the display time (i.e. S16:04:37;15.03.16S)
An auto-toggle feature allows to define a sequence of formats by setting up comma-
separated format strings. Additionally, the duration of a format string can be defined
using the FORMATSTR@DURATION format.
The following example will show the Powerline Frequency for 20 seconds, then the
Reference Time for 30 seconds, then the Frequency Deviation for 10 seconds. Afterwards,
it will start over with the PLF display:
PLF %PLFRQ Hz@20,REF %REFTIME@30,FDV %FRQDEV@10
Suffix: Suffix of customized strings, control characters can be specified
by their hex value (ASCII), for example:
"\x0A" for LF (Line Feed) or "\x0D" for CR (Carriage Return)
Append
Timestamps: Indicates, whether a timestamp shall be appended to the message
14 Date: March 15, 2022 IMS-FDM Setup Guide

4 FDM - Frequency Deviation Monitoring
4.1.2 FDM Status
This menu shows the following values:
Current Frequency: The current frequency of the monitored power network
Reference Time: REF - the time of the reference clock (i.e. GPS)
Power Line Time: PLT - the time of the monitored power line
Line Frequency: 50 Hz or 60 Hz
Flags: Transmitted Flags by FDM (Error Bits)
Receiver State
All receivers previously added in the FDM configuration are displayed in the TAB "Receiver".
IMS-FDM Setup Guide Date: March 15, 2022 15

4.1.3 FDM Information
16 Date: March 15, 2022 IMS-FDM Setup Guide

4 FDM - Frequency Deviation Monitoring
4.1.4 Serial FDM Telegrams
4.1.4.1 Standard FDM String
The STANDARD string is a sequence of 62 ASCII characters containing the frequency F, the frequency devi-
ation FD, the REF time, the power line time PLT and the timedeviation TD, each item seperated by a space
character. The string is send out at the beginning of every new REF time second and ends with the characters
Carriage-Return (Hex code 0Dh) and Line-Feed (Hex code 0Ah). The letters displayed in italics are replaced
by the calculated values whereas the other characters are part of the string:
F:49.984_FD:-00.016_REF:15:03:30_PLT:15:03:30.378_TD:+00.378<CR><LF>
The meaning of the several values is described below:
F:49.984 The measured power line frequency with a resolution of 1 mHz
FD:-00.016 The frequency deviation between calculated and nominal frequency,
with sign character (+/-), resolution: 1 mHz, maximum: +-09.999 Hz
REF:15:03:30 The reference time from the preconnected clock
(hours:minutes:seconds)
PLT:15:03:30.378 The power line time, based on the mains frequency,
(hours:minutes:seconds.milliseconds) Time jumps, like changeover
in daylight saving or leap seconds will not be executed by the PL time!
TD:+00.378 The time deviation between REF time and PL time, with sign character
(+/-), resolution: 1ms, maximum: +-99.999s
4.1.4.2 FDM Standard 2 Telegramm:
Like FDM standard, but it sends every 500 ms instead of 1 per second.
4.1.4.3 Short FDM String
The SHORT string is a sequence of 23 ASCII characters containing simply information about frequency devi-
ation FD and time deviation TD, seperated by a space character. The string is send out at the beginning of
every new REF time second and ends with the characters Carriage-Return (Hex code 0Dh) and Line-Feed (Hex
code 0Ah). The letters displayed in italics are replaced by the calculated values whereas the other characters
are part of the string:
FD:-00.016_TD:+00.378<CR><LF>
The meaning of the several values is described below:
FD:-00.016 The frequency deviation between calculated and nominal frequency,
with sign character (+/-), resolution: 1 mHz
TD:+00.378 The time deviation between REF time and PL time„
with sign character (+/-), resolution: 1 ms
IMS-FDM Setup Guide Date: March 15, 2022 17