Super Systems 7EK 31080 Calibration Manual - Manual (Page 5)

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3) Set calibrator to 0.000 V.
4) Push ▲ or ▼ pushbutton, the upper display will change to "On".
5) After a few seconds, start the calibration by pushing FUNC
pushbutton. At the end of this calibration routine, the instrument
will go to the next step.
F.2) "10UH" - FINAL SCALE VALUE
The lower display will show "10UH" while the upper display will
show "OFF"
1) Set the calibrator to 10.000 V.
2) Push ▲ or ▼ pushbutton, the upper display will change to "On".
3) After a few seconds, start the calibration by pushing FUNC
pushbutton. At the end of this calibration routine, the instrument
will go to the next step.
F.3) "10U." - 10 V INPUT CHECK
The upper and the lower displays show "10U." followed by the
measured value in counts.
The "10U." calibration is correct if the indication is equal to "10U.3
0000" + 10 counts.
1) Check the zero calibration, by setting the calibrator to 0.000 V,
the read-out must be equal to "10U.0 0000" + 10 counts.
2) Check the linearity by setting the calibrator to 5.000 V The read-
out must be "10U.1 5000" + 10 counts.
NOTE: when it is desired to use a different check point, the
following formula describes the ratio between the signal input
and the instrument read-out (in counts).
Instrument readout (in counts) = input value
10 (V)
30000 •
3) Push FUNC pushbutton, the instrument will go to the next
calibration group.
G) CURRENT TRANSFORMER INPUT CALIBRATION
G.1) "ct.L" - INITIAL SCALE VALUE
The lower display will show "ct.L" while the upper display will show
"OFF"
1) Made the specific hardware setting as described at paragraph 2.
2) Connect the instrument under test to the calibrator as shown in
Fig. 9.
Fig.9
3) Set calibrator to 0.00 mA AC.
4) Push ▲ or ▼ pushbutton, the upper display will change to "On".
5) After a few seconds, start the calibration by pushing FUNC
pushbutton. At the end of this calibration routine, the instrument
will go to the next step.
G.2) "ct.H" - FINAL SCALE VALUE
The lower display will show "ct.H" while the upper display will show
"OFF"
1) Set the calibrator to 50.00 mA AC.
2) Push ▲ or ▼ pushbutton, the upper display will change to "On".
3) After a few seconds, start the calibration by pushing FUNC
pushbutton. At the end of this calibration routine, the instrument
will go to the next step.
Check symbol
Measured or generated
value (in counts)
6
5
mA AC
Generator
Check symbol
Measured or generated
value (in counts)
G.3) "ct." - CURRENT TRANSFORMER INPUT CHECK
The upper and the lower displays show "Ct." followed by the
measured value in counts.
The "ct.H" calibration is correct if the indication is equal to "ct. 0
1000" + 10 counts.
1) Check the zero calibration, by setting the calibrator to 0.00 mA
AC, the read-out must be equal to "ct. 0 0000" + 10 counts.
2) Check the linearity by setting the calibrator to 25.00 mA AC. The
read-out must be "ct. 0 0500" + 10 counts.
NOTE: when it is desired to use a different check point, the
following formula describes the ratio between the signal input
and the instrument read-out (in counts).
Instrument readout (in counts) = input value
50 (mA AC)
1000 •
3) Push FUNC pushbutton, the instrument will go to the next
calibration group.
H) DEFAULT CALIBRATION PARAMETER LOADING.
A complete and consistent set of calibration parameters is memorized
in the instrument. These data are theoretical data and are used only
to clear all calibration memory but after a default calibration data
loading it is necessary to make all calibrations.
When is desired to clear all calibration memory proceed as follows:
a) The upper display will show "CAL" while the lower display is blank.
b) Push the▼ push-button, the lower display will show the firmware
version.
c) Push and keep depressed the ▼ push-button again and push the
▲ push-button, the lower display will show "dFLt".
d) Push ▲ or ▼ pushbutton, the upper display will change to "On".
e) Push the FUNC push-button, the upper display will show:
Then the upper display will show CAL again and the default calibra-
tion parameter loading procedure is ended.
WARNING: After default calibration data loading, it is
necessary to remake all instrument calibrations.