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PRESYS
⏐ Instruments
Returning to factory calibration
The Stations store the factory calibration parameters in the non-volatile memory
whick can be retrieved at any time.
Should there be any suspicion that some instrument malfunction might be due to
an improper recalibration procedure use the REC option (see figure 22).
REC - this is the option allowing the retrieval of factory calibration values. This
option is valid for both the inputs and outputs.
Enter level 4 and select whether to retrieve input or output values. Select the
option REC and press ENTER to reload factory values.
4.5 - Hardware Maintenance Instructions
Prior to returning the instrument to factory check the following possible causes of
instrument malfunction.
Instrument showing display errors
After the instrument is turned on, it starts the test routine to check the RAM and
E2PROM integrity.
Should any of these components have problems the display will show the
following error codes:
Err. 1 - RAM error
Err. 2 - E2PROM error
In case of a RAM error, turn the instrument off and then turn it on again to check
whether the error message persists. If affirmative, return the instrument to factory.
In case of an E2PROM error, press ENTER and reconfigure the instrument. Turn
the instrument off and then turn it on again to check whether the error message persists.
If affirmative, return the instrument to factory.
Instrument display off
Check if power supply voltage is provided to terminals 23 and 24 of the Station.
Verify the integrity of fuse F1 of 2.0 A placed in the Power Supply Board as
shown in figure 16. Due to its package it is necessary to check the fuse continuity in
order to detect if it is broken.
Instrument malfunction
Check that if the Station is correctly configured both in terms of software and
hardware (internal jumpers).
Examine if the optional modules are connected in the right plug-in connection.
DCY-2058 and DCY-2059
Maintenance
Page 34
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