Argus PiCUS Tree Motion Sensor Online User manual

PiCUS Tree Motion Sensor Online
Hardware Manual
This manual has been created for the PTMSO device system with the following component
versions:
Hardware version: 1.0.0003
Firmware version: 1.0.0000
App version: 1.0
Manual version: 19 January 2020
argus electronic gmbh
Erich-Schlesinger-Straße 49d
18059 Rostock
Germany
Phone: +49 (0) 381 - 496814 - 40
www.argus-electronic.de
email: [email protected]

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1 Table of contents
1Table of contents............................................................................................................ 2
2Abbreviations and agreements....................................................................................... 5
3General Information........................................................................................................ 7
3.1 Intended use................................................................................................................ 7
3.2 Disclaimer............................................................................................................... 7
3.3 Packing List............................................................................................................. 8
3.4 Description of the system components.................................................................... 8
3.4.1 Transport case (TMSO.Case) .......................................................................... 8
3.4.2 Central Unit (TMSO.CU) .................................................................................. 9
3.4.3 Tilt Sensors (TMSO.IM)...................................................................................11
3.4.4 Battery Charger...............................................................................................12
3.4.5 Wireless Charging Trays (TMS.Single charger)...............................................12
3.4.6 Micro USB Cable.............................................................................................12
3.4.7 Mounting Screws.............................................................................................13
3.4.8 Solar Cell ........................................................................................................13
3.4.9 Magnetic tool (TMS.magnetic pen)..................................................................13
3.5 Basic System Structure and Function.....................................................................14
3.6 Measuring Modes of the System / Typical Applications..........................................17
3.6.1 Wind Response Measurement (WRM)............................................................17
3.6.2 Wind Response Measurement with Time Slices (WRMS) ...............................19
3.6.3 Construction Site Monitoring (CSM)................................................................19
4Preparation for First Use ...............................................................................................20
4.1 Set Up Cloud Access .............................................................................................20
4.1.1 Create Dropbox...............................................................................................20
4.1.2..............................................................................................................................20
4.1.3 Account...........................................................................................................20
4.1.4 Install Dropbox on the PC................................................................................20
4.2 Set Up PC Software...............................................................................................21
4.2.1 Install TMS.Software on the PC ......................................................................21
4.2.2 Configure Directories.......................................................................................21
4.2.3 Configure Authentication Code........................................................................21
4.3 Configuring the Telephone App..............................................................................22
4.3.1 Install TMSO.App on the Mobile Phone...........................................................22
4.3.2 Configure Authentication Code........................................................................22
4.3.3 Coupling TMSO.App with the TMSO.CU.........................................................23
4.4 Setting Up the TMSO.CU.......................................................................................24
4.4.1 Insert SIM Card (optional) ...............................................................................24
4.4.2 Configure SIM PIN (optional)...........................................................................24
4.4.3 Dropbox Access Configuration........................................................................26

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5Examples of Project Implementation .............................................................................29
5.1 Generally Valid Steps.............................................................................................29
5.2 Wind reaction measurement (WRM / WRMS) ........................................................29
5.3 Construction Site Monitoring (CSM).......................................................................30
6Project Preparation........................................................................................................31
6.1 Site Visit, Visual Inspection of the Trees to be Monitored.......................................31
6.2 Selection of the Suitable Measuring Mode .............................................................31
6.3 Recording of the Ambient Conditions.....................................................................31
6.4 Planning of the System Structure...........................................................................32
6.5 Planning of the Definite Positions of the System Components ...............................37
6.5.1 Optimization of Energy Supply ........................................................................37
6.5.2 Optimization of the Radio Connection .............................................................38
6.5.3 Positioning Base Sensor.................................................................................38
6.5.4 Positioning Control Sensor..............................................................................39
6.5.5 Examples........................................................................................................39
6.6 Charging the Devices.............................................................................................40
6.6.1 TMSO.CU .......................................................................................................40
6.6.2 TMSO.IM.........................................................................................................40
7Equipment Installation and Commissioning...................................................................41
7.1 Attaching the TMSO.IM..........................................................................................41
7.2 Collection and Input of Project Data Into the TMSO. App.......................................42
7.3 Attachment of the TMSO.CU..................................................................................46
7.4 Attaching the Solar Cell..........................................................................................47
7.5 Switching on the Devices .......................................................................................48
7.6 Preparation for System Activation ..........................................................................49
7.6.1 Establish connection to the TMSO.CU............................................................49
7.6.2 (optional) WLAN Configuration........................................................................50
7.6.3 Configuration of the System............................................................................51
7.6.4 (optional) Setting a Measuring Plan.................................................................52
7.6.5 Transfer of Project Data and Configuration .....................................................53
7.6.6 System Test....................................................................................................53
7.7 System Activation...................................................................................................55
8System Control and Behavior........................................................................................56
8.1 Control Panel .........................................................................................................56
8.1.1 General...........................................................................................................56
8.1.2 Wind Reaction Measurement (WRM / WRMS)................................................56
8.1.3 Construction Site Monitoring (CSM)................................................................56
8.2 System Behavior....................................................................................................57
8.2.1 General...........................................................................................................57
8.2.2 Wind reaction measurement (WRM / WRMS) .................................................60

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8.2.3 Construction Site Monitoring (CSM)................................................................60
9Maintenance of the Active System ................................................................................61
9.1 Checking the System Status ..................................................................................61
9.1.1 Recommended Interval...................................................................................61
9.1.2 Data to be Checked.........................................................................................61
9.1.3 In the PC Software..........................................................................................62
9.1.4 In the Log File .................................................................................................62
9.2 Troubleshooting .....................................................................................................64
9.2.1 Cleaning..........................................................................................................64
9.2.2 Charging the TMSO.CU on Site ......................................................................64
9.2.3 Exchange of the TMSO. CU............................................................................65
9.2.4 Exchange of a TMSO.IM.................................................................................66
9.2.5 Changing the Position of a Device...................................................................66
10 Deactivation and Dismantling.....................................................................................67
10.1 Waking up the Devices...........................................................................................67
10.2 Deactivation of the System.....................................................................................67
10.3 Switching Off the Devices.......................................................................................68
10.4 Dismantling the Equipment.....................................................................................68
11 Application Notes / Troubleshooting...........................................................................69
11.1 Cleaning the Equipment.........................................................................................69
11.2 Locked SIM Pin or SIM Card..................................................................................69
11.3 Hardware Error.......................................................................................................70
12 Expert Settings ..........................................................................................................71
12.1 Change Authentication Code..................................................................................71
12.2 Sensor Type Research...........................................................................................71
12.3 Expert Settings in TMSO.CU..................................................................................72
12.3.1 Wind Reaction Measurement (WRM / WRMS)................................................72
12.3.2 Construction Site Monitoring (CSM)................................................................73
13 Technical Information.................................................................................................74
13.1 TMSO.CU ..............................................................................................................74
13.2 TMSO.IM................................................................................................................75
13.3 Solar Cell ...............................................................................................................75
13.4 Battery Charger......................................................................................................76
13.5 TMS.Single Charger...............................................................................................76
13.6 TMSO.Case ...........................................................................................................76
13.7 Mobile Phone Requirements..................................................................................76
13.8 Requirements PC...................................................................................................76

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2 Abbreviations and agreements
PTMSO PiCUS Tree Motion Sensor Online
the entire system
TMSO. App TMSO control software for mobile phones
TMS.Software Software for Windows PC for transferring and evaluating data acquired
with PiCUS TMS 3 or TMSO
TMSO.IM TMSO Inclination Sensor
TMSO.CU TMSO Central Unit
TMSO.Case TMSO Transport case
TMS.Single charger Wireless charging cradle (contactless energy transfer) for PiCUS TMS 3
or TMSO sensors
TMS.Magnetic pen Magnetic tool for switching on all PiCUS TMS 3 or TMSO components
BLE Bluetooth Low Energy
WLAN Wireless Local Area Network
LTE Mobile data network, used in this document as a collective term for the
mobile Internet connection over 3G, 3.9G or 4G, depending on
availability
Dropbox The cloud used by the PTMSO as Internet data storage
TMSO Radio The specialised radio link for data exchange between the TMSO.IM and
the TMSO.CU
WRM Wind reaction measurement
Measuring mode of the PTMSO for measuring the tree inclination during
wind events
WRMS Wind reaction measurement with time slices
Measuring mode of the PTMSO, similar to WRM, but with temporally
even distribution of the acquisition of inclination maxima
CSM Construction Site Monitoring
Measuring mode of the PTMSO for monitoring thevibrations and ground
movements to which a tree in the immediate vicinity of a construction
site is exposed

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Text fields displayed in an app on the mobile phone, in software on the PC, or labels on the
outside of a device are shown in this manual in gray color and bold italic letters EXAMPLE.
Data entry fields in an app on the mobile phone or in software on the PC are shown in this
manual in green and bold italic letters EXAMPLE.
Data display elements in an app on the mobile phone or in a software on the PC are shown in
this manual in blue color and bold italic letters EXAMPLE.
Cross-references to other chapters of this manual or references to external sources are written
in italics and underlined.
Potential sources of error are indicated with CAUTION, notes with the keyword NOTE,
followed by a short explanation in italics.

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3 General Information
This chapter deals with general information and provides a rough overview of the components,
structure and functions of the PTMSO.
3.1 Intended use
PiCUS tree measurement technology offers tree experts a comprehensive set of diagnostic
tools for the detection and evaluation of defects on trees. To assess the stability of a tree, the
PiCUS TreeQinetic pulling test and the PTMS 3 / PTMSO are suitable methods for measuring
the root plate inclination in in-depth tree inspections.
The PTMSO is designed to measure and monitor 2 different types of events on trees:
short term inclination movements/vibrations of trees (mainly inclination due to wind
events), which typically have a duration of a few seconds
vibrations transmitted through the ground into the tree or directly mechanically
introduced into the tree
The system is theoretically able to measure such events on other objects besides trees.
However, the hardware, the internal data filtering, as well as the analysis and evaluation of the
data in the supplied PC software is specifically designed for the application on trees. The
results can therefore not be transferred to other objects without restrictions!
Please also note 3.2 Disclaimer!
Due to the measuring technique, the system is not suitable for reliable measurement of long-
term changes in inclination.
When using the system, the permissible ambient conditions described under 13 Technical
Information must be observed. Otherwise a faultless function of the system cannot be
guaranteed.
3.2 Disclaimer
Using the PTMSO on other objects than trees may damage the PTMSO, its components or
the object. The measurement results of the PTMSO require interpretation by qualified experts.
Conclusions about the condition of the tree, derived from the measurement data and analyses
generated by the PTMSO, are the sole responsibility of the person drawing the conclusion.
Neither the manufacturer of the PTMSO nor the seller can be held liable for consequences
arising from the application of the PTMSO.
If the measurements of the PTMSO show large inclinations which suggest that the tree
is felled, other test methods (e.g. PiCUS TreeQinetic pulling test) must be used in any
case to confirm the measurement result.
All technical specifications are subject to change without notice.

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3.3 Packing List
No.
Designation
Quantity
1
Transport case
1
2
Central Unit (TMSO.CU)
1
3
Inclination Sensors (TMSO.IM) (number in starter kit)
10
4
Battery charger
1
5
Power cord
1
6
Wireless charging cups (TMS.Single charger)
4
7
USB cable for TMS.single charger
4
8
USB fast charging cable for TMSO.CU
1
9
Screw box
1
10
Mounting screws
15
11
Lashing straps
2
12
Mounting plate for solar cell with 3 carriage bolts and wing nuts
1
13
Solar cell with cable and bracket
1
14
Magnetic tool (TMS.magnetic pen)
2
Table 1 - Packing List PTMSO Transport Case
3.4 Description of the system components
3.4.1 Transport case (TMSO.Case)
The PTMSO is supplied in a practical instrument case.
It is light, very stable and waterproof.
For e.g. air travel, it is equipped with a pressure equalization valve and 2 metal eyelets,
whereby it can be secured with locks against unauthorized opening.

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3.4.2 Central Unit (TMSO.CU)
This is the central radio station and data collection unit of the PTMSO.
The primary functions are:
Establish radio communication with all TMSO.IM registered in the system via TMSO
Radio
Control of the sensors according to the measurement configuration
Collection and filtering of all measurement data from the sensors
Connect to the Internet (via WLAN or LTE) and transfer the measured data to the
Dropbox
Provision of the configuration and control interface to the user's mobile phone via BLE
Secondary functions:
Create a local data backup in case no connection to the Internet or the Dropbox can
be established
Execution of firmware updates (of the TMSO.CU itself or the TMSO.IM)
The TMSO.CU has the same sensor technology as the TMSO.IM, so it can also be
used as a control sensor if required (however, due to the mounting, larger wind-
exposed area and the external cable to the solar cell, the noise of the measured values
can be greater than with the TMSO.IM).
For power supply the TMSO.CU has a very large internal battery which can be charged via the
USB interface.
In addition, the solar cell supplied can be connected to the central unit. Under good conditions,
this provides enough energy to recharge the battery even during use.
The housing is stable and waterproof.
In order to keep it as inconspicuous as possible despite its size and to prevent external
influences, all display and operating elements are hidden behind a cover, which can only be
opened with a tool (enclosed TMS.Magnetic pens).
Figure 1 - TMSO.CU with the housing cover open, view of the front panel

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No.
Designation
Function
1
Magnetic switch
Switching on the device
Switch on BLE while the system is active
Reset of the device
2
USB interface
Data connection with a PC and the TMSO.software
Charging the battery
3
SIM card holder
SIM card for establishing the LTE connection
4
CHARGE
Charging LED *
Shows the status of the charging process via USB
Fast flashing: charging with high charge current
Slow flashing: charging with low charge current
Permanently lit: charging completed
5
MEAS
Measuring LED *
Permanently lit: the TMSO.CU is currently busy processing a task
Flashing every 2 seconds: the PTMSO is currently taking active
measurements
6
WWAN
LTE LED *
Indication of LTE module activity when connected to the Internet
7
CON
BLE and WLAN
LED *
Indication of the readiness and activity of BLE for connection to
the user's mobile phone
Indication of WLAN activity when connected to the Internet
8
TX
TMSO Radio
transmit LED *
Indication of the message transmission to the TMSO.IM
9
RX
TMSO Radio
Receive LED *
Indication of data reception from the TMSO.IM
10
Solar cell
connection
Socket to connect the solar cell cable
11
Position of the LTE
antenna
Mobile connection to the Internet through the LTE module
12
Position of the BLE
and WLAN antenna
Connection to a local wireless network with Internet access and to the
user's mobile phone
13
Position of the
TMSO Radio -
antenna jack
Socket for the radio antenna, connection of the TMSO.CU to the
TMSO.IM
14
Mounting plate
(back of the
housing)
Plate for fastening the device with screws or a lashing strap
Table 2 - TMSO.CU Operation and Display Elements
* If all LEDs are off, the device is either completely switched off or in sleep mode to save
energy.

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3.4.3 Tilt Sensors (TMSO.IM)
The sensors in the PTMSO are largely autonomous devices, which are controlled by the
TMSO.CU only for the purpose of time synchronization. There is no direct connection between
them, this is done exclusively via the TMSO Radio with the TMSO.CU.
The functions of the sensors are:
The acquisition of inclination data
Prefiltering of this data according to relevance
Transmission of the filtered data to the TMSO.CU
For power supply, the sensors have an internal rechargeable battery which is charged
contactlessly via the enclosed TMS.Single charger.
In addition, the sensors have a number of solar cells that, under good conditions, provide
enough energy to recharge the battery even during operation. This extends the already long
running time of the sensors even further.
The sensors are fully encapsulated and very stable to protect against dirt, water and
mechanical damage.
Furthermore, they were developed under the same aspects as the PiCUS TMS 3:
As small and unobtrusive as possible.
For this reason, the sensors have only 1 unobtrusive display and adjustment element each.
Figure 2 - TMSO.IM, front view

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No.
Designation
Function
1
Magnetic switch
Switching on the device
Turn on TMSO Radio while the system is active
Reset of the device
2
Status LED
Steady flashing every second: device is in standby mode and
waiting for commands via TMSO Radio
Flashing every 2 seconds: the PTMSO is currently taking active
measurements
Permanently lit: the PTMSO is active and the device has
activated its TMSO Radio to be ready for radio communication
with the TMSO.CU
Off: the device is either completely switched off or it is in sleep
mode
3
Solar cells
Supporting the power supply of the device and charging the battery in
use
4
Charge-receive coil
(rear)
Wireless charging of the device battery by means of a TMS.Single
charger
5
Screw sleeve
for mounting the sensor on a tree
6
Position of the TMSO
Radio antenna
Connection of the TMSO.CU to the TMSO.IM
Table 3 - TMSO. IM Operating and display elements
3.4.4 Battery Charger
The enclosed charger has 6 channels (USB sockets). Here you may connect the TMS.Single
charger with the included USB cables and the TMSO.CU.
CAUTION!
Connect the TMSO.CU only with the enclosed special USB fast charging cable!
3.4.5 Wireless Charging Trays (TMS.Single charger)
The charging trays act as energy transmitters for contactless charging of the battery in the
TMSO.IM.
4 pieces (with USB cables) are included with the system so that 4 sensors can be charged
simultaneously.
3.4.6 Micro USB Cable
2 different types of USB cable are
supplied.
4 cables are provided for use with the
TMS.Single chargers.
For charging the TMSO.CU with a
charger, the 5th cable is provided,
recognizable by its larger diameter. This
is a special USB fast charging cable with
reinforced strands to conduct higher
charging current.
Figure 3 - Supplied USB cables

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3.4.7 Mounting Screws
A set of wood screws is included to attach the TMSO components to trees. These are 8 cm
long, which makes it possible to attach them securely even to trees with thick, brittle bark, as
they still reach right into the wood.
For trees with thin bark it is recommended to use shorter screws to reduce damage to the tree!
The following screws should be used:
TMSO.CU and solar cell: Lens head, max. 5 mm Ø
TMSO.IM: Countersunk head without milling ribs on the head,
max. 5 mm Ø
3.4.8 Solar Cell
The external solar cell for supplying the TMSO.CU is stored in the lid of the case. The cable is
fixed to the cell. The aluminium frame of the cell also serves as a practical place to store the
cable.
When attached to a tree or other object, the bracket allows the cell to be freely oriented towards
the best position of the sun.
The cable is long enough to position the cell and the control unit as independently as possible,
so that optimum positioning is possible both for the radio antenna of the control unit and for
the power supply from the cell.
3.4.9 Magnetic tool (TMS.magnetic pen)
The TMSO.CU and TMSO.IM do not have a classic mechanical switch for switching on, but a
hidden magnetic switch.
This is operated with the TMS.Magnetic pen.
In addition, the TMSO.CU housing can be opened with the screwdriver blade on its rear side.
CAUTION!
The blade is not suitable for screwing in screws, but only for opening the TMSO.CU housing!
Figure 4 - TMS.Magnetic pen

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3.5 Basic System Structure and Function
The PTMSO is a complex system of several devices (TMSO.CU and TMSO.IM's), which
communicate with each other by radio. The control centre provides further radio connections,
via which data can be exchanged with a mobile phone and via WLAN or LTE with the Internet
and a Dropbox. An app for the mobile phone and a PC program serve as user interface.
Once installed, the system works largely autonomously, the only decision that has to be made
by the user is when measurement data is actually recorded.
The following figures show examples of the system structure in the field, as well as the basic
functional connection of the individual components.

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Figure 5 - System structure
The TMSO.CU is the central hub for all other components of the system.
Since not every TMSO.IM has a separate connection to the Internet, a TMSO.CU is required
for each group of sensors.
Each TMSO.CU can be connected to up to 20 TMSO.IMs.
In fact, thegeometrical positioning of the devices is the limiting factor, asthe radio link between
the TMSO.IM and the TMSO.CU must always be ensured! This means a direct line of sight
that is as free of obstacles as possible!
The TMSO.IMs send status information and their measurement data to the TMSO.CU via the
TMSO Radio. This collects the data in various files, which are then written to the cloud
(Dropbox). All active TMSO.CUs sort their data independently and automatically, so that only
one Dropbox account is required for any number of systems.
The TMS.Software installed on a PC with an Internet connection uses this cloud storage as a
data source and reads the files for further analysis. It automatically differentiates between
status information of the system, the configuration and the actual measurement data and
prepares them accordingly for viewing and further processing by the user.
For further details please refer to the operating instructions of the TMS.Software:
Manual TMS.Software

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To issue commands to the PTMSO, the cloud (remote access) or the TMSO.App on the mobile
phone is used. The TMS.Software automatically creates a command file in the cloud on
demand, which is downloaded and processed by the TMSO.CU the next time the cloud is
accessed.
In this way, the user has the option to send a new measurement plan from their PC to the
PTMSO for the period in which the weather forecast predicts sufficient wind conditions.
If required, such a measuring plan can be set on site when installing the PTMSO. This is done
using the TMSO.App while entering the project information and configuring the system.
The PTMSO essentially has 4 operating states, whereby the TMSO.CU and all TMSO.IM
always operate in the same state, controlled and synchronized via the central unit:
OFF
The devices are switched off.
Standby mode
The operating state after the devices have been switched on by the user. The TMS
Radio is ready to receive in all devices, in the TMSO.CU also the BLE. The devices
wait for commands from the user. If no commands are received, the TMSO.CU
switches off automatically after 5 minutes and the TMSO.IM after 15 minutes.
Sleep mode
The operating state after the system has been armed by the user. Both the TMSO.CU
and the TMSO.IM are in energy saving sleep mode most of the time. The radio is only
occasionally activated briefly to update the time synchronization of the TMSO.IM and
to exchange status information.
In addition, a connection to the Internet is established regularly to upload the current
status information and check the command file for a new measurement plan.
Measuring mode
If the user has set a measurement plan and the internal system clock indicates that the
defined time window has been reached, the system switches to this operating state.
Now inclination measurements are actively recorded and checked for relevance. These
are then transferred to the cloud.
Once the time window has expired, the system automatically returns to sleep mode.
The user can choose between several measuring modes, depending on the
application. See 3.6Measuring Modes of the System / Typical .
Figure 6 - Operating states of the system
Off
Standby
mode Sleep mode
Measuring
mode
Magnetic pen
System
activation
Deactivation
oft he system
Start of
measuring
plan
Stopp of
measuring plan
Turn off command
(TMSO.App)

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3.6 Measuring Modes of the System / Typical Applications
3.6.1 Wind Response Measurement (WRM)
The aim of wind response measurement is to measure the root plate inclination of the tree and
to put it in relation to the prevailing wind speed, especially the gusts. Knowledge of the behavior
in the wind allows experts to assess the tree, especially with regard to its stability. More details
for evaluation in the manual of the TMS.Software.
The PTMSO directly records the change in the inclination of the tree during a wind event,
similar to the older TMS 3, from which the underlying measurement method originates.
Accordingly, a tilt sensor is attached to each tree to be monitored at ground level (called the
base sensor), in order to be able to measure the inclination of the root plate directly. As with
the TMS 3, however, the sensors of the PTMSO can also be influenced by external disturbance
variables, which leads to a distortion of the measured values.
To filter these out, an additional sensor is needed as a reference, which is mounted at a height
of 2 - 2.5m (called the control sensor).
These two sensor types do not represent different hardware variants, but simply have different
behavior in the system due to the corresponding configuration. This means that each TMSO.IM
can be a base or control sensor.
In addition, the TMSO.CU can also assume the role of a control sensor if required.
In order to distinguish wind-induced inclination events from other movements or disturbances,
an event detection is carried out. This reacts to properties of the inclination measurement data:
An actual inclination event must be visible simultaneously on the readings of the base
AND control sensor and show a comparable waveform
An actual tilt event ALWAYS causes the control sensor to tilt more thanthe base sensor
To achieve this result, however, it is not absolutely necessary to use both a base and a control
sensor on each individual tree.
For a group of trees standing close together, it can be assumed that during a wind event, all
trees are hit by the same gust of wind almost simultaneously. This means that as soon as only
one of the trees has a control and base sensor, a wind inclination event can be identified on
this reference tree. Since all sensors are synchronized with each other in time, the time stamp
of the reference tree event can be compared with the recordings of the base sensors on the
other trees. If these have registered events at the sametime, then these tooare real inclination
events induced by the same gust of wind. This allows an event to be detected via criterion 1,
even if criterion 2 fails due to the lack of control sensors on the same tree.
The older TMS 3 continuously recorded the measurement data over the period of use, which
can lead to very large amounts of data, but in the end only a very small proportion of which is
actually relevant for evaluation and interpretation.
In contrast, the PTMSO already pre-filters the raw data and only records the data that are likely
to be relevant. This considerably reduces the amount of data to be transmitted and thus saves
energy and working time of the user during evaluation.
This filtering and selection of the relevant data takes place in two phases.
Phase 1 - takes place directly in the independently operating TMSO.IM:
If the system has been put into the measuring mode by a measuring plan, all TMSO.IM will
start to measure inclination values. They do this for a certain time, which is specified by the
TMSO.CU, the measurement cycle.
By default, the length of the measuring cycle is set to 1 hour (see also 12.3.1.3Relationship
Between Event Recording Time and Max. Number of Memory Slots

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A total of 32kB event memory is available in each TMSO.IM. This is where the event memory
slots are saved.
The size of each memory slot is defined by the set recording time period (sum of pre and post
recording time).
Accordingly, there is a maximum possible number of available memory slots, which limits the
value of the parameter "max. number of events per measuring cycle".
Example:
The 32kB memory is sufficient for recording a total of 273 seconds of measurement data.
With the default settings of the recording times (10 seconds pre- and post-run time) each event
memory location occupies 20 seconds. The maximum possible number of memory locations
is therefore 13.
If the recording period is reduced, e.g. to 15 seconds, by lowering the lead time from 10 to 5
seconds, there is a maximum of 18 possible memory locations.

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Length of a Measuring Cycle).

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Each TMSO.IM has a small internal memory that allows the recording of a maximum number
of pitch events (event memory locations). The default setting is 10 events (see also
12.3.1.1Max. Number of Events per Measuring Cycle) with a recording length of 10 seconds
before and 10 seconds after the maximum slope value (see also 12.3.1.2 Pre- and Post-
processing Time for Event Recording). These settings should only be changed by experienced
users!
The following diagram illustrates the recording window:
If a TMSO.IM now detects an inclination event, it will record the required curve for a total of 20
seconds and store it in one of its event memory locations. If all memory locations are already
occupied, it will replace the event with the smallest amplitude with the new one. Thus, at the
end of the measurement cycle, each TMSO.IM will have the up to 10 strongest inclination
events of this period in its memory.
The following sketch shows an example of the measuring process and the event selection of
a measuring cycle:
Once the measurement cycle is complete, all TMSO.IMs will stop their measurement
operations and activate their TMSO Radio, as well as the TMSO.CU.
Figure 7 - Data recording timeframe
t
t + 10s
t + 20s
t + 30s
Event detected
(local maximum)
Recording timeframe
Figure 8 - Event selection according to WRM, complete measurement cycle