Hotline Berlin

+49 - 30 - 46 70 90 26

Hotline Frankfurt

+49 - 6172 - 59 67 240

FAQ - Frequently Asked Questions


Structural Analyzer - Why does my experiment no longer work after downloading?

imc WAVE Structural Analyzer

After loading my experiment, the channel configuration is no longer correct. The "Input" and "Roving" parameters are now activated for all channels marked as "Output". Therefore the experiment does not work any more!

In order to avoid this problem when loading the experiment, the checked boxes must be manually deactivated once. From this moment on, the settings will be set correctly even for subsequent loadings.

Set the "Input" parameter (logical value) for all "Output" channels one time to "True" and then back to "False".

The same applies to the "Roving" parameter.

The experiment can then be saved. No "wrong" check boxes will be checked during subsequent loadings.


Category: SW--WAVE, SW

Automobile manufacturers and their suppliers, in particular, have been demanding that calibration service providers be accredited in accordance with ISO 17025.

Fundamentally, however, what is required is proof of competence: accredited laboratories are such which have proven their capabilities to an independent assessor.
imc is not an accredited calibration service provider. However, by definition we possess the capabilities and the regulations pursuant to TS16949 / QS 9000 do not apply to us.

imc performs calibration with instruments calibrated to the national standards in accordance with ISO 9001. Our service comes standard with a (manufacturer’s) calibration certificate.

The optional calibration reports which include records of measured values conform to the requirements of ISO 17025.

DIN EN ISO 9001 only requires a declaration (manufacturer’s calibration certificate) of traceability of the reference equipment used to national standards.

By default, we pass the benefit of lower costs to our customers as price savings (extra charge for optional "Certificate with Protocol as per ISO 17025"). The traceability of equipment, archiving of measurement values etc. are governed by ISO 9001:2008, and are regularly monitored by TÜV TÜV Cert Rheinland GmbH.

All calibration reports along with measurement values are automatically archived at imc and are optionally available for release (up to 10 years later).

According to what standards do you calibrate your instruments?


At the moment, adjustment and calibration operations by imc are steps within an overall production process or a service; this means we have no separate inspection laboratory but rather so-called adjustment and inspection stations. The processes and procedures are set out in a protocol in the test instructions and test planning as elements of our Integrated Management System. All the processes are procedures developed by imc itself.

All calibration and adjustment procedures used at imc within the framework of our type testing are developed, validated and optimized for serial inspection with the goal of achieving the greatest precision economically justifiable. In this context, the reports of measurement values are at the same time a certificate and an inspection plan (manufacturer’s specification). It is easy to develop customer-specific inspection plans on this basis; imc is happy to provide support in doing so.

In designing the measuring amplifier, the procedures for its adjustment and calibration are also developed at the same time and verified in the type inspection. One part of the procedure is to adjust various parameters due to their dependence on properties of components and on the running temperature; additional parameters such as the sampling rate selected or the selected filtering may not affect the measurement precision according to design targets.

The resulting acceptance tests include procedures for the serial production and servicing, which reflect an optimum balance of test precision, standards conformity and economic viability.

In our “Calibration” type test, we use the following standards, among others:
The series of standards VDI/VDE/DGQ/DKD 2622: Calibration of measurement equipment for electrical quantities, describes fundamental calibration procedures.

DKD 2622 Blatt 5 describes calibration of function generators
DKD 2622 Blatt 11: Calibration guidelines for spectrum analyzers
DKD 2622 Blatt 20 describes the calibration of DC voltage measuring amplifiers

Additional standards and guidelines:

DKD-R 5-5 regulates the calibration of temperature indicator devices
DKD-R 6-1 regulates the calibration of pressure measurement modules
Power network quality, voltage quality: EN 50160 and DIN 61000-4-30

How do I find the network name of my device as well as its MAC address?

Network device designation and MAC address

Registration of the devices on the network (device designation and MAC address)

Find out how to determine the network name of the device as well as the MAC address of TCP/IP devices.

1. Determining the network name of the device

The devices are registered with the device designation per nameplate on the network.

2. Determining the MAC address of a TCP/IP device

To determine the MAC address, a ping must first be sent to the IP address of the measurement device, then use the command "arp –a".

The IP address can be determined by using the program IF Config for devices with the serial number 12xxx with 400kHz total sampling rate and serial number 13xxxx and 14xxxx. For all other devices, use the program TCP/IP Config. The accompanying notes will work for both programs.

Start the program imc DEVICES IF-Config, it is located in the Start folder of imc DEVICES.

Find your measuring device in the network, then go to the "LAN configuration". The current IP address can be read here.


Go to "Start," then "Run" and in Windows NT, 2000, XP and Vista enter "cmd" and in Windows 95, 98, Millennium, "command".


In the DOS shell (MS-DOS input form), manually enter "ping" followed by the IP address (e.g., ping and press "Enter". Next, type "arp a" and again press "Enter". Now the MAC address is determined. It is listed after the IP address in the "Physical. address" that you used to "ping".



Download this article as PDF

Category: HW--CRONOS, HW
How does imc perform on-site service?

We come with 1 - 2 technicians with 2 - 3 calibration stations. We need an on-site air-conditioned room (doors and passages > 1.20 m) and a work space with a footprint of approximately 2 x 3 m for each calibration station.

At a second work station, in parallel with the function testing, we will carry out firmware updates and other agreed work which might be necessary.

The calibration certificates and measurement reports will be presented as a pdf. If a printed copy is required, we will deliver this after the work is finished.

For receiving a quote, the following information is required:

  • Serial numbers of the devices, and any other individual modules
  • On-site contact
  • A specific date you would like (for staff planning, we'd like 4 weeks lead time)
  • What services are wanted? (calibration, adjustment, system inspection, maintenance, software updates, etc.)?
  • What time you can work? Early or late shift, Saturday work possible?
Category: Service--On-Site
What does calibration entail?

In calibration, the relationship between the measured value of an output quantity and the corresponding value of the measured input quantity is determined under specified conditions. Simply put: comparison with a reference having the same units, which in measurement engineering means determining the measurement deviation returned by measurement equipment. Calibration does not entail technical intervention – such as adjustment – in the measurement equipment. With indicator measurement equipment, calibration determines the deviation between the measured value indicated and the correct value – or the reference value considered correct.

Calibrations are performed in order to ensure that the measurement equipment used indicates values having a known and documented proportionality to an internationally accepted standard for the quantity measured. The goal is that when measurements of the same quantities are performed by different parties, e.g., customer and supplier, comparable results are obtained. The prerequisite for this is that the measurement uncertainty—which is inherent in any measurement—must be known.

Performing calibration leads to results and findings which provide a guide in better understanding and assessing the tolerances of measurement equipment.

How can I tell if the UPS in my measurement device is defective?

Turn on the imc measurement device and simulate a power failure.

If the function of the UPS shuts down after the set UPS time +5 seconds, then the UPS is functioning.

f the device shuts down before this amount of time, then either the UPS battery has not had enough time to charge or the UPS is defective.

To charge the device, plug the device into a power supply for six hours in the ON position. Then, the power failure can be re-simulated.

Category: HW--CRONOS, HW
In imc Online FAMOS, how can I create a “fast” GPS channel?

To create a "fast" GPS channel, simply use an appropriate, quick reference channel and use this with the "CreateVChannelInt". To use this feature, the control constructs must be enabled in Online FAMOS.

Geben sie folgende Zeilen in Online FAMOS mit Steuerkonstrukten ein:

VC_Satellites = CreateVChannelInt (Channel_001, pv.GPS.satellites)

VC_Longitude = CreateVChannelInt (Channel_001, pv.GPS.longitude)

VC_Latitude = CreateVChannelInt (Channel_001, pv.GPS.latitude)

VC_Speed = CreateVChannelInt (Channel_001, pv.GPS.speed)

The Channel_001 is the quick reference channel, thus providing the "time track" for the virtual channel "VC_Satellites". For each value the GPS Mouse delivers, there is a corresponding process vector variable.

Experimente mit anderen Geräten öffnen?

Wählen Sie ein Experiment und suchen Sie für dieses Experiment das passende Messgerät:

1) imcDevices starten! (es muss kein Gerät verbunden sein)
2) Laden Sie das Experiment über Datei -> ‚Öffnen für Gerät’

3) Im folgenden Fenster können Sie das Experiment einem passenden Gerät zuweisen (über die ‚>>’-Buttons). Es werden alle eingetragenen Geräte aufgelistet.
Die Farbcodierung hat folgende Bedeutung:
grüner Punkt: Das Gerät verfügt über die gleiche Ausstattung. Das Experiment kann genutzt werden.
gelber Punkt: Das Gerät verfügt über eine ähnliche Hardware. Es werden nur die passenden Einstellungen geladen. Bitte überprüfen Sie die Verstärkereinstellungen!
roter Punkt: Die Hardware unterscheidet sich. Das Experiment kann nicht geladen werden.

4) Nach der Zuweisung des Experimentes mit dem ‚>>’-Button zum Gerät betätigen Sie den ‚OK’-Button. Jetzt können Sie das Experiment starten und ggf. unter einem anderen Namen abspeichern.

Category: SW--DEVICES
Why does the importing of TEDS information not work with imc CRONOSflex ISO2-8?

At this time importing of TEDS information for this module is only supported without "preparation":

turn on device -> connect with software -> activate all channels -> import TEDS


Category: HW--CRONOS
Does the complete measurement chain of our teststation always need to be calibrated?


The process of calibrating a piece of measurement equipment using equipment conformant to higher  standards, which in turn is calibrated using equipment conformant to yet higher standards, is known as the calibration chain.

The purpose of this calibration chain is to trace the measurement instruments’ accuracy back to national standard reference equipment. This determines a calibration hierarchy.

In principle, you could calibrate every individual component and find the total test station measurement chain’s uncertainty in this way; there are mathematical techniques for this purpose.

Or you could calibrate the entire measurement chain by replacing your sensor signal with a calibration signal.

If the measurement uncertainty of one or more components within the test station’s measurement chain is unknown, the calibration chain to the sensor is interrupted; in this case, it would not be possible to make a reliable statement of the measurement results’ accuracy.

Category: Service--On-Site
Can imc calibrate the complete test station measurement chain?


In collaboration with you or with your calibration service provider on location, we can also calibrate the entire test station measurement chain. For test stations provided by imc itself, methods for on-site adjustment of offsets or correction of characteristic curves have generally already been arranged.

Upkeep, repair and system maintenance of imc measurement devices, however, can most effectively be performed at imc. For this reason, we recommend that you create maintenance and calibration plans for your test station. When making such plans, please be sure to take any resulting costs into account, for example due to downtime caused by failure, or costs for keeping replacement parts in reserve. We will gladly provide support, both actively and with advice.

Category: Service--On-Site
Why can't I find my imc CANSAS module on the CAN-bus?

Module not found

I can't find my imc CANSAS module on the CAN-bus

1.) Is the CAN-bus is terminated correctly?

Both ends must be terminated with a terminator (124 ohms according to CiA). (See Figure 1) If the module or instrument has only a CAN-bus connection, e.g., imc CRONOS-PL, then the termination should be made via a Y-cable and a terminator.

2.) Is each module set to the same transfer speed/baud rate?

All CAN-bus participants/modules being operated at a given node must be set to the same baud rate or else communication between the participants in the bus is not possible.

3.) Does the set baud rate and cable cross-section size match the cable length?

The transfer rate on the bus is dependent on the cable length, the cable cross-section and the number of nodes. The greater the cable length, the lower the possible transmission rate will be and a larger cable cross-section must be selected. (see Figure 2)

For more information, see the current imc CANSAS Manual


Category: HW--CANSAS
How can I add my measurement device in Explorer?


Even if you've already connected the imc DEVICES/STUDIO software with the device, it is not yet listed in Explorer. By clicking on the Data (Device) button in imc STUDIO, you can open it in Explorer. Or via Tools -> File Manager in imc Devices.


It will open the following dialog box. Under imc Systems, click on the Devices icon.

Next, using the right mouse button, click anywhere on an open space, then under context menu, choose new. This will open the Add Device interface dialog box. Now click on Search Network.


Select the desired device and confirm with OK. The device is now available in Explorer under Devices.


Why is my NetBEUI measurement system not displayed in the network search with MS Windows XP?

In contrast to other MS Windows versions, under MS Windows XP you must follow different instructions for installation of the NetBEUI protocol. If you already have NetBEUI on your PC, uninstall it before the new installation process and restart the PC.

1.    Insert the Windows XP CD-ROM and go to the folder Valueadd\MSFT \Net\NetBEUI.
2.    Copy Nbf.sys to %SYSTEMROOT%\System32\Drivers.
3.    Copy Netnbf.inf to the %SYSTEMROOT%\Inf.
4.    Click on Start, then Settings, then Control Panel, then double-click on Network and Dial-up connections.
5.    Right-click on the entry for "Local Area Connection" and select "Properties" from the context menu which appears.
6.    On the index card "General", click on the button "Install...".
7.    In the dialog which then appears, select "Protocol" and then "Add...".
8.    It should now be possible to select the NetBEUI protocol in the list. Select NetBEUI and click on OK.
9.    Restart the computer.

Note: Administrator rights for your PC are required.

Category: HW
Which version of imc CANSAS supports Kvaser Leaf SemiPro HS?

The interface is supported by the imc CANSAS Version 1.9 R4.

My measurement data are incomplete. How can I repair this?

Among other things, incomplete measurement data occur if the UPS in the device is defective and, is therefor, not allowing the device to shut down correctly.

To repair the incomplete measurement data, follow these steps: First, download the following file:

Then, simply copy Repair.exe and dirrepair.bat into the folder with the defective files (Make a Back-up first!) and execute dirrepair.bat. After this, you should now have access to the defective data.

Unfortunately, this doesn’t work in all cases. Always make sure that you make a back-up copy of your data. If this solution hasn’t worked, please contact the imc Hotline.

Why doesn't the shunt calibration in my CANSAS module function correctly?

CANSAS and shunt calibration

The shunt calibration in my CANSAS module doesn't function correctly.

When performing a shunt calibration, channels that are set for half or quarter bridge measurement, cannot be open. Otherwise, during shunt calibration, incorrect readings will occur.

We therefore recommend to not set wired channels on the voltage measurement with maximum range or to not transmit over these channels (change CANSAS software to "without CAN message")

Category: HW--CANSAS
I am unable to uninstall my devices in order to ship them: what should I do?


Contact our hotline, and we will find a solution!

We can offer rental systems as interim solutions, for instance, or we can use your planned downtimes, such as company vacations or maintenance periods, to perform service work, including adjustment, system maintenance, and upkeep. We also offer an express version of all service work.

We are happy to assist you in composing inspection plans optimized for your circumstances.

Category: Service--On-Site
How do I install my Kvaser interface (supplied by imc) so I can use it with imc CANSAS?

Insert the supplied driver CD and follow the installation instructions. Alternatively, you can also download the driver at the following link:

Only after the driver is installed should you connect the interface to the PC.

After the connection to the PC, the Windows Wizard will appear and display “Found New Hardware”. Since you have already installed all the necessary driver data, you need only click through the menu. Windows detects and connects the driver data in this step automatically.

In the last step, the interface in the imc CANSAS software can be found under Extras -> Interface Activate. Then, click on “board”:


Then, check the box next to “(re)activate interface”

Why does the Diskstart not work, as soon as I measure with a digital imc CRONOSflex module?

The Diskstart with digital CRFX modules(See manual of imc CRONOS system family) is not supported at this time. The Diskstart with those modules is supported with imc software version as of 2014-03-19.

(ref. IT#19394)

Category: HW--CRONOS
What is an adjustment?

Adjustment refers to the process of adjusting measurement instruments to compensate for known systematic measurement discrepancies. In contrast, then, to calibration, this means manipulating the instrument in a way which produces lasting effects. Note that this renders any previous calibration and its traceability pedigree obsolete! It is then also no longer possible to reconstruct any changes in the instrument's measurement properties.

How do I change the physical units of virtual channels in imc Online FAMOS?

In imc Online FAMOS, go to the “i” button.


On the right side of the screen , choose the virtual channel. Then on the left side column, choose the term “Y-Units”.  In the bottom left drop-down, choose “user defined”, then fill in your desired unit.

For Y units, you can also enter them as SI units, which are then calculated as such, e.g., Volt with Ampere would arise as Watts. Other units in SI require quotation marks in the box. Units other than SI units require quotation marks to be entered and are therefore passed off as text, for example, "mV/V".

What is a second activation?

A second activation is a license for using imc software on a second computer of a person, for example, a laptop.

It should be noted that the software must never be running on both computers at the same time.

The second activation behaves as a single-user license and is tied to a computer.
When you uninstall the software or change computers, the second activation must be disabled in the License Manager. Then it will be ready for a use on another computer.

If the second activation could not be disabled, please contact the imc hotline.

Second activations are always bound to single-user or network licenses.

Category: SW--Licensing
I installed the driver for the imc CAN/USB adapter, but my interface is not detected! Why?

Up to the end of 2014, the imc CAN/USB adapter was supplied. At the end of the imc CANSAS installation, the dialog refers to the driver of this interface.

How you set up the Kvaser Leaf SemiPro HS interface for the imc CANSAS is described in the FAQ below.

I just switched a channel in the Set-up plug-in to active, but it isn't showing up in the Data Browser. What's wrong?

Channel not showing up in the Data Browser

I just switched a channel in the Set-up plug-in to active, but it isn't showing up in the Data Browser. What's wrong?

To increase performance, configurations are not automatically refreshed after every change in the Set-up. To refresh the configuration manually, click on "Process" button under the Devices tab in the ribbon controls.
The same command can also be found in the toolbar of imc STUDIO.

Category: SW--STUDIO, SW
When working with multiple FAMOS entities, how will they be shared among the available cores?

The distribution of the entities among the existing cores is carried out by the system.  Here, imc FAMOS itself doesn’t have any specifications.

Category: SW--FAMOS
Why am I receiving implausible measurement values from my test system?

Implausible measurement values

I am receiving implausible measurement values from my test system.

Often times the problem can be traced to inadequate grounding of the device or the shielding on the signal wires. Through potential differences between the modules, and other connected devices, such as a laptop, BUSDAQ, etc., there can be compensation currents that can cause disturbances, and in the worst case, could destroy the module.

1. Grounding of the CANSAS module

Because it is anodized, the aluminum case itself is, generally, poorly conductive. Therefore, the locking bolts of the DSUB connector sockets should be used for grounding the device.

2. Shielding on the signal wires

Basically, to stay within the limits with respect to EMC and EMI, the use of shielded and grounded cables are necessary. In many cases, the use of a cost-effective, multi-conductor and simple shielded cable (also for multiple channels) is sufficient. (see Figure 1)

However, it may be necessary in other cases, to use double shielded cable. That is, common grounded (CHASSIS) and jacketed, within which individual (also more) coaxial cables are placed.

In particular, to avoid increased interference (noise), this process may be necessary if under the following conditions:
- "Higher" internal resistance of the signal source (> 100 Ohms)
- Signal sources not grounded (isolated or high impedance over CHASSIS and/or ground reference of the supply)
(see Figure 2)

3. Grounding from the CAN-Bus

Long CAN bus wires between the grounded module and the CAN data logger (device) can cause compensation currents on the bus. Therefore the CAN-bus shielding  should only be opened at one end.

For more information, see the CANSAS Manual Version 1.6, section 5.4

Category: HW--CANSAS
What is a network license?

Network licenses are not tied to a specific PC. The network license allows imc software to be used on all computers assigned to the license server.

The license server has a pool of licenses. All computers that access the server work dynamically through the same license and give it back when not in use. Thus, e.g., 30 computers can be connected to the license server, and with only 15 network access licenses, only 15 computers can use the imc software simultaneously.

The network licenses are activated on the license server and must be disabled when changing the license server again.

If a network license could not be disabled, please contact the imc hotline. Each network license also contains a second activation, for example, for use on a second Laptop.

Category: SW--Licensing
Why does my imc CRONOSflex ISO2-16-2T not measure?

At the moment the Module imc CRONOSflex ISO2-16-2T is only supported with the following software versions:

  • imc DEVICES 2.8 R3 SP9 (13.12.2013) + AddOn 04.02.2014
  • imc DEVICES 2.8 R5 SP1 (13.11.2013)

(ref. IT#19404)

Category: HW--CRONOS
My mobile measurement device runs with a variety of sensors and cable connections; what does that mean for calibration?


In accordance with manufacturer’s specifications, we perform the function test and calibration with imc terminal connectors. Additionally, within the framework of the System Inspection we perform an "all-round" function test "of everything" with any available interconnections specific to the customer, and upon request, if provided by the customer with the pertinent interconnections, we perform "all-round" calibration.
Under some circumstances, the measurement uncertainty is altered by the use of sensor and cabling types not available for calibration of the measurement system.

In light of this, you should consider what tolerances are acceptable for your measurement purposes.

Category: Service--On-Site
How can I export the Curve Window in imc FAMOS? (PDF, JPG, PNG, BMP)?

When exporting the Curve Window, it will be displayed without a frame. It is possible to export it in PDF-format, JPEG-format, Portable Network Graphics or Windows Bitmap.

To export data, first, in the menu go under “Edit“, then click on “Graphic export”. Under the menu “Edit”, it is possible to make a copy of the graphic to a clipboard, then transfer it to another program or page via the command “insert”.

The settings for the graphics export can be accessed via "Settings" menu then "handling". Under the item "Graphics Export" you can set the resolution, append pages to an existing pdf file or change the orientation of the PDF page and the file format. With the storage format "exact screen display when copying and exporting" the representation of the curve window will be exported exactly as it is shown on the screen.

Category: SW--FAMOS
What is a legally secure calibration chain?

The process of calibrating a piece of measurement equipment using equipment conformant to a higher  standards, which in turn is calibrated using equipment conformant to yet higher standards, is known as the calibration chain.

The purpose of this calibration chain is to trace a piece of equipment’s calibration to the national standard.

What is a single-user license?

A single-user license authorizes the licensed imc software product on a single PC. It is then bound to this PC.
A single-user license includes a second activation, e.g., for use on a laptop computer.
When you uninstall the imc software or change computers, the single-user license must be disabled through the License Manager.
Then it is ready for a use on another PC. If a single-user license could not be disabled, please contact the imc hotline.

Category: SW--Licensing
I ordered an imc USB Interface and I received a Kvaser Leaf SemiPro HS Interface for my imc CANSAS. Is this a mistake?

No. At the end of 2014, the imc CAN/USB interface was replaced by the Kvaser Leaf SemiPro HS Interface, which is currently the best on the market.

In imc FAMOS, how can I change the Curve Window from black & white to color?

Once you have opened the Curve Window, click in the menu on “options”, the “colors”.

On the right side, under “properties”, then “colors for display / printer”, you have the option to change the colors for display and for printing. The display for printing is also responsible when copying to the clipboard.

With a right mouse click, open the context menu. In the context menu, under “set colors to default values”, click on the “gray” selection, because the default setting of the Curve Window is “gray”. On the context menu item "Copy: Printers -> Screen", the selection can also be transferred to the screen.

Category: SW--FAMOS
What licenses are there?

There are two ways to license imc software: As a single-user license or as a network license.
Both single-user licenses and network licenses come with a second activation.
Single-user licenses can also be used with the imc dongle. In this situation, the second activation is not necessary.
Network licenses require a license server and cannot be used with the imc dongle.

Category: SW--Licensing
How can I change the colors in imc FAMOS for printing or filing?

Once you have opened the Curve Window, click in the menu on “options”, the “colors”.

On the right side, under “properties”, then “colors for display / printer”, you have the option to change the colors for display and for printing.

On the left side, you will see a preview of the selected colors.

Category: SW--FAMOS
My computer doesn’t have internet access, how can I activate the license anyway?

In this situation, the Activation can occur by following the next three steps:

Step 1:

Export Activation File: The computer, even without internet access, exports (saves) an activation file. This file contains information specific to the PC and to the license.

Step 2:

Activation with activation file: The computer with internet access, opens the activation file and follows the activation assistance in a manner analogous to activation “with the internet”. The activated licenses are included in the same activation file. If you do not have a PC available where activation can take place, you can send the activation file by e-mail to the imc hotline.

Step 3:

Import Activation File: The activated Activation Files by the computer with internet access opens the activation file again. The Activation Files from the computer without internet access are transferred over. It is transferred There is the assumption of the activated licenses on the computer without Internet access. It will only accept the licenses that the computer data is in agreement with. An import on a 3rd computer is not possible.

Category: SW--Licensing
How often is calibration necessary?

To get correct measurements in the long term, the test equipment used has to be monitored regularly and calibrated, if appropriate. The time between such calibration treatments is called the calibration interval. We frequently receive questions about the necessary calibration interval for measurement and test equipment.

However, there is no unambiguous answer to this question, since a device's state of calibration is dynamic and depends upon the following factors, to name a few: the input quantity and its permissible tolerances, wear and tear on the equipment, stability of previous calibration procedures, measurement precision required and last but not least a company's quality assurance system policies.

As a matter of principle, a calibration is valid only at the moment it is performed. Setting deadlines for re-calibration is the responsibility of the equipment user. As a rule, the calibration interval should be designed to optimize the balance between risks and costs.

This means that the calibration interval is ultimately the user's own responsibility to determine and monitor. Our recommendation is from 1 up to 3 years. In order to support our customers in determining the calibration interval, we offer consultation from our employees. Our standard statement in our spec sheets is for 1 year.

Does imc STUDIO require an unlock code?

imc STUDIO requires an unlock code

An imc DEVICES version always belongs with an imc STUDIO version. Here you can find out why an unlock code is required and how you get it.

An imc DEVICES version always belongs with an imc STUDIO version. The imc STUDIO software that uses imc DEVICE version ≥ 2.7 devices requires an unlock code. An update of imc DEVICES version 2.7 is not free of charge. Please make inquiries to your local distributor to submit a quote. Please note that only certain groups of devices are supported by imc STUDIO. For more information, refer to the technical data sheet and to imc STUDIO.

For questions, your local distributor will be happy to assist you or you can directly contact our hotline.

In imc FAMOS, how do I change the colors on the screen in the Curve Window?

Once you have opened the Curve Window, click in the menu on “options”, the “colors”.

On the right side, under “properties”, then “colors for display / printer”, you have the option to change the colors for display and for printing.

On the left side, you will see a preview of the selected colors.

Category: SW--FAMOS
My PC is broken. How can I activate my new license on my new PC?

In this situation, please send an e-mail to the imc hotline with the following information:


  • Due to a defect (e.g., possibly theft, or reinstalling the operating system), I cannot deactivate my license. I would therefore like the following license to be deactivated by imc:
    • License key
    • Which license should be deactivated? (imc STUDIO, imc FAMOS, imc LINK,…)
    • PC name
    • User information (if any): user name, e-mail address, company name (will be specified during the activation in the imc LICENSE Manager)


Category: SW--Licensing
Does calibration also include adjustment/balancing?


Yes. Calibration by imc includes calibration upon receipt (determining actual values, deviations beyond tolerances are noted), a brief function check, adjustment and calibration for release.

You receive a manufacturer’s calibration certificate without measurement values (lab reports optionally available).

The imc system inspection includes a total functionality inspection from the manufacturing perspective, which is able to reveal certain latent errors. As a customer, you receive a service report.

Upon request, the service “only calibration” is available (no adjustment, no subsequent function testing) or only function testing (system inspection). Since 2005, we have included the following items in our price list:

  • Calibration (includes: calibration upon receipt, manufacturer’s calibration certificate as per ISO 9001)
  • Adjustment (includes: calibration upon receipt, adjustment, calibration for release, manufacturer’s calibration certificate as per ISO 9001)
  • System Inspection (includes: system inspection, function checkup, service report)

The imc calibration package which we recommend and which enjoys our customers’ approval consists of the combination of Adjustment and System Inspection .

How do I find out if a device has a CAN1 or CAN2 interface?
  1. Connect your measurement device to the PC
  2. Open imc DEVICES and connect to the device
  3. Now go to: Devices -> Properties...
  4. After saving, open the window Device Configuration
  5. In the table, find the entry MFBus-Module
  6. Click on the "+" on the left side of the column, a new row("Type") will become visible
  7. On the right side of the row, you can now read the type of fieldbus interface
  8. If it has the label CAN (MCAN), then it is always a CAN 1 Interface
  9. If it has the label CAN (MBUS_X), then it is always a CAN 2 Interface

Category: HW
Is imc an accredited/certified test laboratory?


imc does not operate an accredited calibration laboratory, but we rigorously implement the requirements of ISO 17025 in our own QM system. imc is certified according to DIN EN ISO 9001 since May 1995.

What does monitoring of measurement equipment entail?

The goal of a test equipment management system is to ensure the quality of measurements of products and processes. Toward this end, two major issues must be observed:

  1. The quality of the measurement processes, i.e. how well the measurements are performed,
  2. The quality of the test equipment, i.e. how well the test equipment is adapted to the measurement task.

To ensure the quality of test equipment, the following must apply:

  • Test equipment is clearly labeled
  • Equipment performance requirements are stated
  • Test equipment is regularly inspected for compliance with defined requirements, i.e. it is calibrated regularly (and adjusted if necessary), (see also Calibration Interval)
  • Test equipment used for calibration can be traced to national or international standards (or to documented calibration foundations if no such standards apply)
  • Test equipment is treated in such a way as not to compromise its functional properties.

To meet these requirements, a test equipment management system must be introduced which is also compatible with other company goals.
Companies must have test equipment at their disposal for every measurement required, i.e. for every physical unit of relevance. Toward this end, an overview of all test equipment available to the company is needed.
Correct performance of measurements is conditional on all test equipment used being properly calibrated.

Can only individual channels be calibrated?

Upon request, we can calibrate only individual channels according to a customer’s inspection plan.

The imc DEVICES or imc CANSAS user’s interface allows correction values for the offset or for calculation of special characteristics to be saved for subsequent use in particular applications. We use this capability in our own test station applications, for example.

Adjustment of individual channels with permanent recording of correction values in the module storage is generally either not possible or very costly, so only whole systems or modules can be adjusted as a whole.

Furthermore, the elaborate test equipment administration for complex measurement systems, in which only individual functions are adjusted or calibrated, deserves mentioning.

If you have any special wishes, please feel free to communicate these to our hotline.

Is monitoring of measurement equipment really necessary?

Management and monitoring of the equipment used serves the following purposes:

  • Ensuring the maintenance of measurement equipment
  • Use of only appropriate test equipment for the inspection of the conformity of products and processes to requirements
  • Ensuring the required precision of test equipment (including of the reference instruments)
  • Ensuring the traceability to higher-level calibration standards
  • Avoidance of customer complaints due to incorrect measurement results
  • Avoidance of rejection of functional products, or of acceptance of defective products for further processing or shipping
  • Proof to customers and certification authorities of the conformity of test equipment monitoring systems to requirements
  • Overview of all test equipment available/used
  • Improvement of employee awareness with regard to performing tests and to treatment of equipment.
What should I consider when using Li-Ion batteries?


Because of the unavoidable self-discharge of Li-Ion batteries (smart batteries), it  is recommended that the device be reconnected to a power supply no later than after 3 months of operation to fully charge the internal Li-Ion batteries.

  • The batteries recharge automatic when the device is connected to a power supply.
  • Charge time per Li-Ion battery: up to 3 hours
  • The storage of discharged smart batteries is not recommended and can possibly render them (the battery pack) unusable!
  • Capacity per Li-Ion battery:
    • 69 Wh (small, CRFX/HANDLE-LI-IO-L)
    • 95 Wh (large, CRC/B-Li-IO-1 and -2)

* pertains to imc CRONOScompact (CRC/B-Li-IO-1 und -2) and imc CRONOSflex (Power Handle: CRFX/HANDLE-LI-IO-L)

You can find the handbook and technical data in our Dowload-Center

Category: HW--CRONOS, HW
Can my measurement device be retrofitted with a SSD hard disk?

SSD hard disk

Can my measurement device be retrofitted with a SSD hard disk?

Yes it can!

An internal 128 GB SSD hard disk (SATA) is available for imc CRONOSflex (CRFX-400,CRFX-2000) and for imc CRONOScompact.
An SSD hard disk offers the significant advantage over IDE disks by having improved vibration resistance.
An additional advantage over the IDE is also an increased temperature range. The IDE functions between 0°C to +50°C. The SSD hard disk is specified for a temperature range between 10°C to +70°C.

Notice: Not every comercially available SSD hard disk is compatible with imc devices. The SSD hard disks that we offer were specifically chosen and tested by us.

For additional questions, please contact your local imc partner, or contact us via the  Hotline.

Category: HW--CRONOS, HW
Is a function test always performed?


The best function test is the system inspection recommended by imc:

A function test of the entire device is conducted (e.g., digital input/output, current supply, analog outputs, depending on device configuration).

Additionally, each device is subjected to an individual final inspection (function test and a measurement check of individual channels using other calibrators); this final inspection can be made to take account of customer-specific or device-specific prerequisites or conditions (for instance, the characteristics of a special MIC-channel can be checked at this stage). The final inspection is documented internally by imc; the customer receives a service report.

May only accredited laboratories be commissioned, as required in TS16949/QS 9000?


The requirements stated in QS 9000, ISO/TS16949 and other management systems for accreditation pertain to testing and calibration laboratories commissioned by suppliers in the automobile industry. Accreditation of calibration procedures according to DIN EN ISO/IEC 17025 (general requirements for competence of testing and calibration laboratories), for example, is meant to demonstrate competence, for which accreditation by an independent third party is a (very transparent) method.

Alternatively, QS 9000 offers these very suppliers the ability to rely on the manufacturers of test equipment for its calibration. However, these manufacturers need not necessarily be accredited, but can demonstrate their competence in other ways, e.g. by self-declaration, quality assurance agreements or audits. Naturally, the regulation (QS 9000) states this explicitly (QS 9000 3rd edition, 4.10.6 Requirements of Supplier Laboratories).
Note that the applicable standard DIN EN ISO/IEC 17025 does not require accreditation as a test or calibration laboratory.

What is there to consider about flash disks?

Flash disks: What is there to consider?

Which brand of flash disk do we recommend? What is there to consider?

In principle, any commercially available PCMCIA flash disk or CF memory card can be used. However, the cards on the market differ in writing/reading rates, timing and power consumption. In the "worst-case" this could lead to data loss.

Please take note of our white paper "How to use removable media".

Caution: We recommend using factory tested flash disks, since data overflow means loss of test data!

Category: HW--CRONOS, HW
Why is imc actually equally well qualified as an accredited test laboratory?


This is expressed in, for instance, DAR-4-EM-03, “Guideline for Traceability in Testing”, in section 3 “Tools for Traceability in Testing – Demonstration of Competence – Measurement Traceability to SI-Units” (excerpt):
The respective requirements set out in EN ISO/IEC 17025 can be considered as fulfilled, if
(3.1.3) calibration or test certificate of the manufacturer of measuring or test equipment is available that demonstrates calibration and traceability to SI Units by means of documented traceable reference standards in line with para. 3.1.5 and using generally recognized methods or demonstrates calibration and traceability to SI Units by a competent calibration laboratory;
(3.1.5) the calibration in the testing laboratory is carried out by generally recognized and specified procedures and appropriate reference standards available that have been calibrated by a competent calibration laboratory outside or inside the testing laboratory;

Items 3.1.3 and 3.1.5 are ensured by imc’s test equipment management.

Can I only have imc measurement devices calibrated by imc? Can I calibrate an imc measurement device myself? Who may calibrate imc measurement devices?


Naturally, you may commission any accredited calibration laboratory with the calibration. Some equipment users are able to calibrate measurement channels themselves by virtue of their own calibration laboratory, or in some cases, calibration of the entire measuring sequence is carried out prior to each measurement. In such cases we recommend maintenance checkup of the measurement systems every 24 to 60 months, depending on the model and the application. We would be happy to help you with creating inspection plans.

Adjustment and total function testing for imc measurement devices are currently only possible at imc.

Does imc work with any accredited calibration laboratory? Which accredited calibration laboratory would imc recommend?


The reference equipment used by imc is regularly calibrated and, if appropriate, adjusted by accredited calibration laboratories within the framework of our equipment monitoring efforts.

Many of our customers have commissioned accredited calibration laboratories with the monitoring of their test equipment. These in turn commission us, as competent manufacturers, with all service work going beyond calibration, such as adjustment, complete function testing, system maintenance, repairs, rental devices etc. Thus we have already been working in a close and cooperative relationship with all of the companies’ calibration providers for many years. Since the competence of all of the accredited calibration laboratories is regularly verified by independent assessors, we are not able to recommend any particular one.

Why should there be a system inspection in conjunction with every repair or calibration?


The device is returned to the user completely tested (and having been repaired, if necessary)!

The imc System Inspection is the best and most reliable 100% function test, which is also able to reveal latent errors.

In the course of repairs, re-adjustment is often necessary due to an error found or to a replaced component.

Example: power supply unit reported as defective.
Error profile: defective input channels strain the power supply unit.
Plus: DAC (analog output) channel 2 defective.

Where can I buy the equipment for calibration or adjustment?


We are happy to offer the appropriate accessories: calibration requires device-specific connection terminals; probably template protocols and an inspection plan. We are also happy to assist you in composing inspection plans and training programs for your personnel.

However, purchase of the necessary equipment for adjustment / overall testing in accordance with manufacturer specifications, and of the associated “know-how” is only economical if you must test very many (> 100) identical systems regularly, or if you have very high logistical costs, for shipping. Typical service work (repair, system maintenance, updating, remodeling, upkeep), however, is still only possible at imc.

Why does an imc calibration take so long?

Typically, imc’s processing time for calibration / adjustment, or System Inspection is 7 to 10 business days, due to the high precision of the inspection and to warm-up times. Additionally, shipping paperwork, consultations about any unanticipated repair work etc. all take time. To avoid downtime, it is important that service orders be determined clearly before the equipment arrives at imc.

If you suspect that your device is defective, or if you need calibration or a system update or reconfiguration, it is necessary in any case to contact our hotline prior to shipping.

The hotline will provide you with an RMA (return merchandise authorization) number.
To make this procedure easier, you can download a form from the Internet to send us by fax or email. Or simply give us a call!

Please do not ship any device without previously contacting us and receiving an RMA number.

Within the framework of a service contract, definite delivery dates or express service can be arranged!

Can the report of measured values be provided in electronic format?


Upon request, we can also generate a report as a PDF file. Please note that a complete device report can consist of over 300 pages.

Pursuant to a service contract, we can place the report in the Internet for downloading. Toward this end, we will naturally set up a password-protected location.

I received two calibration certificates, which one is correct?

The imc calibration includes an input calibration (determination of the actual values, for deviations outside the tolerance you will be informed), a short functions test, a renewed balance and a subsequent output calibration.

The log record of the initial calibration is marked with "[Calibration certificate number] _C". The log record after the adjustment and recalibration is marked only with the “[Calibration certificate number]".

Why is calibration by imc so expensive?


All of our customers face cost pressures and for this reason the running operating costs for service and system maintenance are an issue. There is often some confusion for the user (whose boss administers the budget) and for the internal or external calibration laboratory. Until 2003 there actually was some confusion affecting our statements and ambiguity in the terminology used (e.g., calibration... what does it mean?)

In response to this situation, we have overhauled our price list and the terminology used in it:
-    System calibration = System Inspection + calibration (upon receipt) + Adjustment
-    System Revision = Inspection plus maintenance plus update
-    System modification = includes System Revision

We also have adopted new service items into our program such as system maintenance, express service, warranty extension and personalized service contracts, and in consequence the whole program has been up and running smoothly for three years, as attested by very positive feedback.

Calibration by imc is no more expensive than by a calibration laboratory, for example. Quite the opposite: by offering the total spectrum of service from one source, we can save you time, money and trouble!

We challenge you to compute the ratio of the last three years of service costs to the purchase costs!
“We protect your investment!” is our proud motto. Test us out!

Certification (manufacturer’s calibration certificate): Why are no measurement values stated by channel in the standard package?


In general, a manufacturer's calibration certificate from imc for 1 device as per DIN EN ISO 9001 is adequate for our customers. The calibration process entails calibration upon receipt (determining actual values; the owner is informed of deviations beyond tolerances), a complete function check, balancing, and calibration for release. The owner receives a manufacturer's calibration certificate without measurement values.
The manufacturer's calibration certificate certifies the validity of the calibration in reference to the serial numbers listed (identification of the test object); the serial numbers of the system and of the measurement module are unambiguously correlated to the reports and measured values; the report file headers state the test equipment used along with their imc equipment ID numbers.

Optionally, a complete set of reports with measured values and a list of the measurement equipment used can be ordered (measurement values "as received" + "after balancing"). A complete set of reports of this type is needed for trend analysis or for determining calibration intervals, or in the framework of QS-audits, but is not required for a traceable calibration certificate according to ISO 9001ff, for example. We do not include this complete report set as a standard, thus reducing costs for us and our customers. However, the calibration reports with the readings are always archived automatically and are available on file for 10 years.

If equipment arrives at our facilities for service work, such as inspections, maintenance or repairing, we additionally provide a service report stating all work performed.

What does the calibration certificate which comes with new devices mean?


By default, we provide along with every measurement device a manufacturer's calibration certificate with a list of device modules and their associated serial numbers. This certificate is practically a declaration that we have performed calibration traceable back to national standards. The calibration reports with their measurement values are automatically archived and are optionally available (up to 10 years afterwards). The report header states all test equipment used and its respective internal imc ID numbers. Furthermore, our test equipment management conformant to ISO 9001:2008 ensures traceability.

Sometimes imc provides a test certificate and no calibration certificate; what is the difference?

With purely digital modules (e.g. DI, DO, ENC, INC, busDAQ ...) or after the test of devices in servicing, for which calibration was not ordered, we certify the function test with a test certificate. This is a voluntary extra service provided by imc, for which there is no legal entitlement.
Measurement values generated in this procedure are generally not archived, but can be recorded for an extra charge; however, no retroactive order of measurement values is possible.

The manual states the amplifier uncertainty as <0.05% "of value read from the display"; does this really mean "of the gain range"?


< 0.05% of value read from the display is in this case the correct formulation of the gain error; it refers to the value indicated, not to the input range end value.

This means the absolute error is smaller for small values and larger for large values (gain error).

The offset error is stated in % of the input range end value. The total error consists of, among other things, the offset- and gain errors.

Sometimes there is "latitude for interpretation" which raises questions in audits about the statements of the issuance date and the calibration date on the calibration certificate. How are these explained?


An explanation has been provided as a footnote on the calibration certificate since 09/2006:

Issue date:
The day on which the calibration certificate is issued. Unless stated otherwise, the issue date is also the date of the last calibration by imc. A duplicate (certified copy) of the calibration certificate is denoted accordingly.

Last calibration on:
If the date of issuance is different from the date of the last calibration, then we additionally state this date on the calibration certificate.
For technical reasons, the set of reports for a measurement system may under certain circumstances consist of multiple reports with differing dates for the respective calibration. The date of the last calibration then corresponds to the issuance date of the last calibration report belonging to the measurement system.

Can imc also conduct a DKD calibration?


We cannot provide DKD calibration for measurement devices we supply. However, upon request we can exclusively use calibrators having DKD calibration certificates. Naturally, such a requirement must be expressed when placing an order. When developing our calibration procedures, we give regard to the procedures as described in the DKD, for example.

Question: Calibration report with "fail" rating

The “input calibration” is a "fail" rating if a channel exceeds a limit value. The “input calibration” describes the current state before adjustment. Then all input channels will be adjusted and checked with the “output calibration”. On the output calibration no "fail" rating should occur, because it describes the current state after the adjustment.

The tolerance values for a channel during the calibration are much more sensitive defined than the tolerance values in the technical data sheet.

imc Test & Measurement is an Axiometrix Solutions company.