Updating The Internal Software - Chauvin Arnoux C.A 6250 Manual De Instrucciones

This operation must be performed under the following stable climatic conditions:
Temperature: 23°C ± 5°C.
Humidity: 45% to 75%.
Warm-up time: 1 hour.
The temperature of the instrument must be stabilized, as well as the temperatures of the standards. If
these conditions cannot be met, returning the instrument to the factory is preferable.
To adjust the instrument, it is necessary to have resistances calibrated with an uncertainty less than or
equal to 1x10 . The standards must be able to withstand the currents of the corresponding ranges.
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The following ranges must be adjusted: Pt100, 5 mΩ, 25 mΩ, 250 mΩ, 2,500 mΩ, 25 Ω, 250 Ω, 2,500 Ω.
The measurement ranges are adjusted at one point.
We recommend standards having values greater than 80 % of full scale of the ranges.
The Pt100 range is not a measurement range; it is used for temperature compensation measurements;
it must therefore also be adjusted, at two points, a low point and a high point.
We recommend using standards close to 100 Ω for the low point and 115 Ω for the high point, the lower
and upper limits being 98 Ω and 120 Ω.
For the adjustments of the ranges, connect the standards using the measurement connectors.
For the adjustment of the Pt100 range, connect the standards to the connector of the probe.
Reminder: The maintenance menu is password-protected.
Adjusting the 5 mΩ, 25 mΩ, 250 mΩ, 2500 mΩ, 25 Ω, 250 Ω and 2,500 mΩ ranges:
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- in the SEt maintenance menu, select the AdJ command,
- select the range to be adjusted and check that the standard is in fact connected,
- select AdJH and enter the value of the standard,
- select MEASH: the adjustment is then performed,
- the -AdJ- message indicates that the adjustment is over and was successful.
Adjustment of the Pt100 measurement:
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- in the Set maintenance menu, choose the AdJ command,
- in the submenu, choose the Pt100 range and check that the standard is in fact connected,
- select AdJ L and enter the value of the standard,
- select MEAS L: the low point is then adjusted,
- select AdJ H and enter the value of the standard,
- select MEAS H: the high point is then adjusted,
- the -AdJ- message indicates that the adjustment is over and was successful.
Note: the error messages Err10, Err21, or Err22 may be displayed.
5.2.2 Updating the internal sofware
If there are upgrades of the instrument, the updates of the internal software will be available on Chauvin
Arnoux's Web site: http://www.chauvin-ar noux.com with the procedure to be followed.
The update will be performed using the UP9 command of the SEt maintenance menu.
Once this command has been validated, 5 lines appear, indicating that the instrument is ready to
communicate with the computer for the downloading of the new version of the program.
Then observe all indications and recommendations displayed on your computer.
Once the update is over, the instrument reboots as during a normal start-up.
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