Cardinal 825 - Setup and Calibration Procedures; Calibration Jumper Configuration

8545-M838-O1 Rev D  825 Installation & Technical
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SETUP AND CALIBRATION
Your 825 indicator has been thoroughly tested and calibrated before being shipped to you. If
you received the indicator attached to a scale, calibration is not necessary. If the indicator is
being connected to a scale for the first time or recalibration is necessary for other reasons,
proceed as indicated.
Calibration and Setup of the indicator is accomplished entirely by the keypad. However, it may
require changing the position of the calibration jumper depending on the method of sealing
required by your local metrology laws.
Calibration Jumper (J10 – CAL INHIBIT)
The calibration jumper J10 (CAL INHIBIT) is located on the edge of the 825 circuit board and
can only be accessed by removing the rear panel of the indicator. See Figure No. 22 for the
location of the calibration jumper. Refer to the table below and Figure No. 22 for the jumper
settings.
When the calibration jumper is removed (off or on one pin), the word CAL will be illuminated
to the right of the main screen and calibration can take place. When the calibration mode is
selected, the indicator will display:
Hardware calibration enabled
Note that on an indicator with the jumper in this position, the Category 1 event counter
security seal is used as the sealing method.
When the calibration jumper is installed (on both pins), the word CAL will NOT be
illuminated to the right of the main screen and calibration is NOT permitted. With the jumper
installed, the calibration screens are “read only”. When the calibration mode is selected, the
indicator will display:
Hardware calibration disabled
Note that on an indicator with the jumper in this position and a lead-wire seal, you cannot
perform the calibration unless you break the lead-wire security seal to access the calibration
jumper and remove it to enable the hardware calibration. Refer to the table below:
Table of Calibration Switch Settings
Calibration
Jumper
Position
Sealing Method
Used
Calibration
Enabled?
Display when calibration
mode is accessed
OFF
Category 1
Event Counters
Yes
Hardware calibration enabled
ON
Category 1
Lead-Wire Seal
No
Hardware calibration disabled