Difference between revisions of "Calibration of the Ergometer"

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|de=Kalibrierung des Ergometers
 
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|en=Calibration of the Ergometer
 
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|cn=Calibration of the Ergometer
 
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In order to get precise test data, it is absolute necessary that the SRM – High Performance Ergometer is calibrated. We recommend conducting this calibration before every measurement.
 
In order to get precise test data, it is absolute necessary that the SRM – High Performance Ergometer is calibrated. We recommend conducting this calibration before every measurement.
  
 
<gallery>
 
<gallery>
 
  File:02-Steigung-u.-Seriennummer.jpg|Reading slope and serial number
 
  File:02-Steigung-u.-Seriennummer.jpg|Reading slope and serial number
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  File:01-Einstellung-PCIV.jpg|Setting PC IV in the drop-down menu
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  File:01-Slope-Sign-frontview.jpg|Reading slope at the front
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  File:Options-System-ActivePort.jpg|Setting USB/serial adapter in the active port
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  File:02-Slope-Sign-Handlebar.JPG|Reading slope on the handlebar
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  File:Setup-PowerControl.jpg|Setup PowerControl
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  File:03-Slope-Sign-Crank.JPG|Reading slope at the crank
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  File:Special.jpg|Special
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  File:Settings SRM Ergometer Software - Ergometer.png|Ergometer Settings
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File:Nullstelllen-Kalibrierung.jpg|Zero offset calibration of the PowerMeter
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</gallery>
 
</gallery>
  
 
== PowerMeter Slope ==
 
== PowerMeter Slope ==
  
−
Please check the slope on the PowerMeter and also on the SRMWin – Software before every test day. The proper setting is crucial for the measuring accuracy.  
+
The slope in the ergometer software must be correspond to the slope of the PowerMeter and the PowerControl.
 +
We recommend to verify and control the slope of the PowerMeter before every test day. You can find the correct PowerMeter slope on small labels located-at
 +
:*the rear of the PowerMeter,
 +
:*the front of the ergometer,
 +
:*the right crankarm,
 +
:*the handlebar.
  
−
The slope is programmed into the PowerMeter and can be read from the back of the lid or the invoice and the delivery note. 
 
−
 
−
If you are not able to read the slope anymore and you cannot find it somewhere else, please contact us under info@srm.de or by telephone and we will tell you the slope. We just need to know the serial number of your PowerMeter. This serial number is engraved on the front or back of the PowerMeter.
 
  
 
<gallery>
 
<gallery>
Line 31: Line 26:
 
</gallery>
 
</gallery>
  
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== SRMWin – Software: Setting PC IV in the drop-down menu ==
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== Zero Offset ==
  
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[[File:01-Einstellung-PCIV.jpg|thumb|Setting PC IV in the drop-down menu]]
+
[[File:PC Ergometer 1.jpg|thumb|PC Ergometer]]
 +
[[File:Settings SRM Ergometer Software - Ergometer.png|thumb|Ergometer Settings]]
  
−
The condition for the communication of the PowerControl IV (PC IV) with the installed SRMWin-software is the setting of the PC IV in the drop-down menu on the SRMWin surface.  
+
The PowerMeter delivers a certain frequency which is proportional to the torque of the pedal force on the crank. If there is no load on the crank, the PowerMeter is sending a base frequency which must be communicated to the ergometer software and to the PowerControl as a reference value. This procedure is called zero offset calibration (offset adjustment).
  
 +
The zero offset calibration has to be done before every new assembly of the PowerMeter and also before every measurement resp. every training on the Ergometer. A wrong zero offset calibration can result in an internal miscalculation of the power.
  
 +
Please perform the zero offset calibration as it is described below:
 +
:*For a manual comparison, please turn the right unloaded crank clockwise to activate the PowerMeter.
 +
:*By simultaneously pressing MODE and SET, the PowerControl turns into calibration mode.
 +
:*Wait a few seconds until the value on the right-hand side of the display stabilized itself.
 +
:*Press SET to apply the zero offset.
 +
:*The number on the right-hand side of the display is the current frequency of the PowerMeter (SET).
 +
:*The number on the left-hand side of the display is the frequency which is used for the power measurement.
 +
:*By pressing the [[Calibration of the Ergometer#Read Settings|'''Read Settings''']] button in the software, the zero offset will be displayed in the white background field.
 +
:*Press the [[Calibration of the Ergometer#Write Settings|'''Write Settings''']] button, so that the zero offset will be saved in the software.
  
 +
See also: [[SRM-Online represented practically#Zero offset calibration of the PC Ergometer|Zero offset calibration of the PowerControl Ergometer]]
  
 +
== Circumference ==
  
 +
The circumference only influence the displayed speed and is not important for the calculation of the data. We recommend to insert a value of 1.000 mm.
  
 +
The following points show the current state of the ergometer. They are important for the identification and the service.
  
 +
== Firmware ==
  
 +
[[File:Firmware.png|thumb]]
  
 +
The firmware can be updated if you drop the latest “SRM Firmware Image” file (*.sfi) in the box on the lower left corner of the screen: Drop file here to import.
 +
The current firmware incl. date is displayed (e.g. V 1.1.5, 20.02.2017).
  
 +
== Hardware ==
  
 +
Automatically adjusted!
  
−
<br />
+
== Product Code ==
  
−
== SRMWin – Software: Setting USB/serial adapter in the active port ==
+
Automatically adjusted!
  
−
[[File:Options-System-ActivePort.jpg|thumb|Setting USB/serial adapter in the active port]]
+
== Serial Number ==
  
−
Please check if the accurate USB/serial adapter is installed correctly and also displayed on the screen. The installation and application of the provided adapter is necessary to guarantee correct data transfer to the connected computer. Furthermore, it is important that you install the matching adapter for the Windows version you are using.
+
Automatically adjusted!
  
−
If a compatible adapter is installed you can see it as “SRM Downloadcable USB” in the active port.
+
== Operation time ==
−
 
+
−
*Our tested recommendations are:
+
−
:ATEN USB-to-Serial-(RS 232) Converter, (Model: UC-232A), (for Windows 7)
+
−
:Plugable USB to RS-232 D89 Serial Adapter (for Windows 8)
+
−
 
+
−
 
+
−
<br />
+
−
 
+
−
== SRMWin – Software: PowerControl Setup ==
+
−
 
+
−
[[File:Setup-PowerControl.jpg|thumb|PowerControl Setup]]
+
−
 
+
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Check the setup of the PowerControl by calling up the point PowerControl -> “Setup” in the SRMWin – Software.
+
−
 
+
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* '''Initials'''
+
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:Here you can define and enter for example the initials of your Ergometer. These initials determine the register on the harddrive of your computer in which the data will be saved (e.g.: _data.srm/_USA.srm). You can change the initials of already saved SRM files under Properties.
+
−
 
+
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*'''Interval of storage'''
+
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:The recommended storage interval in the PowerControl is 1sec. It will save an average value during the adjusted interval.
+
−
:The data of the PowerControl can also be saved in intervals of 0.10s, 0.20s, 0.50s, 1s, 2s, 5s, 10s, 15s, 30s, 60s, 120s and 240sec [[Media:PCIV-Setup-Interval-of-storage.jpg|(Interval of storage)]]. If you want to readout the data and transfer it to a connected computer, you can only do that via the SRMWin-Software over [[Media:PCIV-Powercontrol-Save-Data-F11.jpg|Save Data F11]].
+
−
 
+
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* '''Slope of Powermeter'''
+
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:Here you can adjust the slope of your PowerMeter [[Calibration of the Ergometer#PowerMeter Slope|(Reading the slope)]]. In the images on the right hand side the PowerMeter has a slope of 15.85 Hz/Nm. The setting of the right PowerMeter slope is crucial for the measurement accuracy. A wrong setting of the slope results in incorrect power display.
+
−
 
+
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*'''Circumference of tire'''
+
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:The circumference of the tire for the Ergometer is set to “1000 millimeters”. This predetermined value of 1000 mm has to be maintained to guarantee the precise measurement of your power data.
+
−
 
+
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*'''Total distance'''
+
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:The overall distance which you have ridden with the PowerControl until now.
+
−
 
+
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*'''Training zones'''
+
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[[File:Trainingzones.jpg|thumb|Training zones]]
+
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:In this window you can set your personal training zones. These zones are independent from the analyzing of the training-zones which were set in the software. They just apply for the PowerControl and are recalled during training.
+
−
 
+
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*'''Date and time'''
+
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[[File:Date_and_Time.jpg|thumb|Date and Time]]
+
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:With this button you can set date and time of the PowerControl. It is important to check these settings because the date is simultaneously a part of the file name and enables the assignment to a register in the database.
+
−
 
+
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*'''Special'''
+
−
[[File:Special.jpg|thumb|Special]]
+
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::'''Interval of storage for temperature'''
+
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::This setting has the purpose of saving the temperature over a certain time interval in the PowerControl. The time interval is shown in min.
+
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::Advisable would be an interval of 10 min. A shorter interval is not to recommend because the temperature sensor in the case of the PowerControl accommodates itself with a certain delay onto the ambient temperature.
+
−
 
+
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::'''Powercontrol display data'''
+
−
 
+
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:::'''Update every''': Tells you in which time interval the data will be updated on the display..
+
−
 
+
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:::'''Smooth over''': Tells you in which time interval the data will be smoothed on the display.
+
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:::Example: The setting of 1 [s] at “Update every POW” (Power) and smoothed (Smooth over) over 3 [s], means that your PowerControl shows you every second the average power value over the last three seconds. These setting are independent of the interval of storage ones.
+
−
:::The label/time units are shown in seconds (s).
+
−
 
+
−
::'''Measure heartrate also without other data'''
+
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::Usually, the PowerControl switches off if the speed and the cadence fall to zero. But you can choose the option that the PowerControl stays on to display the heart rate.
+
−
 
+
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::'''Powercontrol will not switch off'''
+
−
 
+
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::The PowerControl will not switch off and stays on until the batteries show not enough capacity anymore.
+
−
 
+
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::'''Highest change of heart rate'''
+
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+
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::Highest change of heart rate per minute. If there are higher heart rates as the set ones they will be ignored.
+
−
 
+
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::'''Shortest heart rate transmitter signal'''
+
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+
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::Shortest heart rat transmitter signal given in milliseconds.
+
−
 
+
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*'''Clear Memory'''
+
−
 
+
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:Please check in regular intervals the storage capacity (remaining memory) and the state of charge of the PowerControl via pressing the buttons MODE and PRO on the PowerControl simultaneously. The remaining memory is shown in percentage. If the memory is full, you should delete the data via [[Media:Clear_memory.jpg|"Clear memory"]].
+
−
 
+
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:All files will be irrevocably deleted.
+
−
 
+
−
== Zero offset calibration of the PowerMeter ==
+
−
 
+
−
[[File:Nullstelllen-Kalibrierung.jpg|thumb|Zero offset calibration of the PowerMeter]]
+
−
 
+
−
The PowerMeter delivers a certain frequency which is proportional to the torque of the pedal force on the crank. If there is no load on the crank, the PowerMeter is sending a base frequency which must be communicated to the PowerControl as a reference value. This procedure is called zero offset calibration (offset adjustment).
+
−
 
+
−
The zero offset calibration has to be done before every new assembly of the PowerMeter and also before every measurement resp. every training on the Ergometer. A wrong zero offset calibration can result in an internal miscalculation of the power.
+
−
 
+
−
Please perform the zero offset calibration as it is described below:
+
  
−
* For a manual comparison, please turn the right unloaded crank clockwise to activate the PowerMeter.
+
Automatically adjusted!
−
* By simultaneously pressing MODE and SET, the PowerControl turns into calibration mode.
+
−
* Wait a few seconds until the value on the right-hand side of the display stabilized itself.
+
−
* Press SET to apply the zero offset.
+
−
* The number on the right-hand side of the display is the current frequency of the PowerMeter (SET).
+
−
* The number on the left-hand side of the display is the frequency which is used for the power measurement (MANU).
+
  
 +
== Read Settings ==
  
 +
Read the current settings of the ergometer incl. the zero offset and the Slope.
  
 +
== Write Settings ==
  
 +
Here it is possible to insert the slope and to save/to write it for the correct data. Please note that the must be correspond to the slope of the PowerMeter.
  
  
  
−
[[Kategorie:Ergometer]]
+
For a more detailed overview of the settings see [[Ergometer Software Installation and Settings| Settings]]

Latest revision as of 19:32, 2 February 2018

In order to get precise test data, it is absolute necessary that the SRM – High Performance Ergometer is calibrated. We recommend conducting this calibration before every measurement.

  • Reading slope and serial number

  • Reading slope at the front

  • Reading slope on the handlebar

  • Reading slope at the crank

  • Ergometer Settings

PowerMeter Slope

The slope in the ergometer software must be correspond to the slope of the PowerMeter and the PowerControl. We recommend to verify and control the slope of the PowerMeter before every test day. You can find the correct PowerMeter slope on small labels located-at

  • the rear of the PowerMeter,
  • the front of the ergometer,
  • the right crankarm,
  • the handlebar.


  • Reading slope and serial number

  • Reading slope at the front

  • Reading slope on the handlebar

  • Reading slope at the crank

Zero Offset

PC Ergometer
Ergometer Settings

The PowerMeter delivers a certain frequency which is proportional to the torque of the pedal force on the crank. If there is no load on the crank, the PowerMeter is sending a base frequency which must be communicated to the ergometer software and to the PowerControl as a reference value. This procedure is called zero offset calibration (offset adjustment).

The zero offset calibration has to be done before every new assembly of the PowerMeter and also before every measurement resp. every training on the Ergometer. A wrong zero offset calibration can result in an internal miscalculation of the power.

Please perform the zero offset calibration as it is described below:

  • For a manual comparison, please turn the right unloaded crank clockwise to activate the PowerMeter.
  • By simultaneously pressing MODE and SET, the PowerControl turns into calibration mode.
  • Wait a few seconds until the value on the right-hand side of the display stabilized itself.
  • Press SET to apply the zero offset.
  • The number on the right-hand side of the display is the current frequency of the PowerMeter (SET).
  • The number on the left-hand side of the display is the frequency which is used for the power measurement.
  • By pressing the Read Settings button in the software, the zero offset will be displayed in the white background field.
  • Press the Write Settings button, so that the zero offset will be saved in the software.

See also: Zero offset calibration of the PowerControl Ergometer

Circumference

The circumference only influence the displayed speed and is not important for the calculation of the data. We recommend to insert a value of 1.000 mm.

The following points show the current state of the ergometer. They are important for the identification and the service.

Firmware

Firmware.png

The firmware can be updated if you drop the latest “SRM Firmware Image” file (*.sfi) in the box on the lower left corner of the screen: Drop file here to import. The current firmware incl. date is displayed (e.g. V 1.1.5, 20.02.2017).

Hardware

Automatically adjusted!

Product Code

Automatically adjusted!

Serial Number

Automatically adjusted!

Operation time

Automatically adjusted!

Read Settings

Read the current settings of the ergometer incl. the zero offset and the Slope.

Write Settings

Here it is possible to insert the slope and to save/to write it for the correct data. Please note that the must be correspond to the slope of the PowerMeter.


For a more detailed overview of the settings see Settings

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