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Calibration Frequencies

How do the different calibration frequencies work?

Calibration Frequency is the interval of time between required calibrations of any given piece of test equipment.  Set the Calibration Frequency of Equipment in the Calibrations tab of the Equipment dialog (below).

Equipment Calibration Frequency

Calibration Fields

There are four fields involved in the Calibration Frequency function.  They are:

  • Last [Calibration]:  Date of the last calibration.
  • [Calibration] Frequency:  How often the Equipment is calibrated.
  • Units:  Calculates the frequency automatically based on the unit selected.  The Unit field is disabled with Frequencies like Yearly or Monthly because they have an inherent Unit value.
  • Next [Calibration]:  Due date of the next required Calibration.

Calibration Frequencies

The following are all the Calibration Frequencies in Calibration Control where 'n' is the number value in the Units field.

Frequency Name Frequency Description
Biennial Every 2 years
Bi-Monthly Every 2 Months
Bi-Weekly Every 2 Weeks
Cal Not Required No Due Date . . . Not Calibrated
Daily Every Day
Days Every n Days
Manual Set the Next Calibration (Due Date) manually
Month End Every n Months due on the last day of the month
Month of Every n Months due at any day within the calculated month
Month Start Every n Months due on the first day of the month
Monthly Every Month
Months Every n Months
Next Use No Due Date . . . Next Use
Not Calibrated No Due Date . . . Not Calibrated
Quarterly Every 3 Months
Reference Only No Due Date . . . Reference Only
Semi-Annual Every 6 Months
Undefined No Frequency Defined
Use Count Calibrate every n uses where n = Units.  Use the Check In/Out dialog to automatically increment uses.
Use Days Calibrate every n days where n = Units.  Use the Check In/Out dialog to automatically increment uses.
Week of Every n Weeks due at any day within the calculated week
Weekly Every Week
Weeks Every n Weeks
Yearly Every Year
Years Every n Years

“Month of” and “Week of” Frequencies

Unlike the other Frequencies that calculate due dates on specific days, the "Month of" and "Week of" are special Frequencies that calculate the month or week a calibration is due.  These Frequencies are also affected by two settings in the Options dialog for "First Day of Week" and "Due Date 'Week/Month of' Offset".  By default, the "First Day of Week" is set to whatever is standard on your operating system.  The default for the Offset is the Next Month or Week after the calculated due date.

Special Frequencies

"Month of" Example

  • Frequency:  Month of
  • Last Calibration:  5/16/2013
  • Units:  12
  • Offset:  Next
  • Calibration Due:  6/1/2014
  • Label Display:  Due Month of Jun-2014 *

How the math works . . .

  1. Calculate 12 Months after Last Calibration, which yields 5/16/2014
  2. The Offset is set to Next [Month] so the Due Month jumps to the next Month, which yields 6/1/2014

"Week of" Example

  • Frequency:  Week of
  • Last Calibration:  6/5/2013
  • Units:  30
  • Offset:  Next
  • First Day of Week:  Monday
  • Calibration Due:  7/1/2013
  • Label Display:  Due Week of 7/1/13 *

How the math works . . .

  1. Calculate 4 Weeks after the Last Calibration, which results in 7/3/2013.
  2. Since the Offset is set to Current [Week] and the First Day of Week is set to Monday, the Monday of the current week results in a due week starting on 7/1/2013.

* “Month of” and “Week of” Date Masks

Use the Date Masks tab of the Options dialog to modify how Due Dates display on Due Cal labels.  For instance, the default “Month of” mask is MMM-yyyy, which results in "Month of Jun 2014".  The default "Week of" mask is MM/dd/yy, which yields "Week of 07/01/13".  Use the combo boxes to select other pre-defined date masks or create your own.

Note that placing the letter 'u' at the end of any date mask will cause all letters in the mask to display in upper case.

Date Masks

Last updated:  4 Jan 2017

Compatibility:  Calibration Control versions 7.x and later

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