Precisa 490 IB Series, Operating Instructions Manual, Page: 22 / 46

■ 8 Operation
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8.3.10 Key tone
If the key tone is switched on, a short audio signal sounds each time a key is pressed.
8.3.11 Contrast
The display contrast can only be set in instruments with an LCD display.
8.4 Special operating keys
8.4.1 The tare key
• Activating taring
– Ensure that the balance is in the Weighing mode
– Briefly press « T »
– The balance performs a tare operation.
• Range selection
(This option is only available on dual range or floating range balances)
– Ensure that the balance is in the Weighing mode
– Hold down « T » until „RANGE FINE ON” or „RANGE FINE OFF” is displayed
– Release « T »
– If „RANGE FINE OFF” is selected the balance is working only in the coarse range and therefore the read-
ability is 10 times lower than in the fine range.
• Activating calibration
– Ensure that the balance is in the Weighing mode
– Hold down « T » until „CALIBRATION” is displayed
– Release « T »
– The balance carries out a calibration sequence in accordance with the settings in the configuration menu
(see chapter 8.3.5 "Calibration functions") and reports these by means of a print-out.
• Activating an automatic repeatability test (ART)
– Ensure that the balance is in the Weighing mode
– Hold down « T » until „REPEATABILITY TEST” is displayed
– Release « T »
– The balance carries out an automatic repeatability test and the results is printed out (see chapter 14.4
"Automatic Repeatability Test (ART)").
8.4.2 The print key
• Print out an individual value or a report
– Ensure that the balance is in the Weighing mode
– Briefly press « PRINT »
– The individual value or report will be printed out.
• Reset product counter to 1
– Ensure that the balance is in the Weighing mode
– Hold down « PRINT » until „RESET PROD.-COUNTER” is displayed
– Release « PRINT »
– The product counter will be reset to 1.
• Print out a balance status
– Ensure that the balance is in the Weighing mode
– Hold down « PRINT » until „PRINT STATUS” is displayed
• KEY TONE
KEY TONE ON /OFF Switch key tone on and off
• CONTRAST
CONTRAST 6 Set the contrast, only in LCD displays
NOTE
The calibration can be interrupted with the « ON/OFF » key.