CNX t3000
Calibration Manual
10
Calibration Adjustment
The Product features closed-case calibration adjustment and uses known reference
sources. The Product measures the applied reference source, calculates correction factors,
and stores the correction factors in nonvolatile memory.
Should the Product fail any of the performance tests, do the calibration adjustment
procedure.
When “
C-01
” is shown on the display, apply the correct input signal shown in Table 4 to
the Product. Then push
to confirm the calibration step. If the input signal does not
satisfy the calibration requirement, “
Err
” is shown. If the signal is not stable, it can be
necessary to push
several times to confirm the calibration.
After confirmation, the Product goes to the subsequent calibration step.
Note
After you push
, wait until the calibration step number advances before
you change the Calibrator source. Some adjustment steps can take several
seconds to execute before the Product goes to the subsequent step.
Set the calibrator to Standby after you complete adjustment of each
function.
Input each signal to the Product in the sequence shown in Table 4. When the last
calibration point is recorded, “
End
” shows on the display.
Note
While the calibration adjustment points are shown in Table 4, the Product
also can show the necessary inputs. For each step, push
to see the
necessary voltage input.
Note
To source 30 mV dc from the 5500A Calibrator thermocouple output, it is
necessary to select the
10
µ
V/
°
C Type
from the softkey menu of the 5500A.
Then source 3000
°
C. The connections are the same as in Figure 2 but it is
necessary to use the thermocouple and wire specified for calibration that is
shown in Table 2. Do not use the thermocouple and wire specified for the
performance test.
Table 4. Calibration Adjustment
Calibration Step
Calibrator Output Signal
C-01
30 mV dc
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