KEPCO BOP-MG, Operator'S Manual

Page: 136 / 194

4-4
BOP-1K 031912
4.3 CALIBRATION USING REMOTE SCPI COMMANDS VIA GPIB OR RS 232 INTERFACE
The primary means of adjustment are the
CAL:DATA
commands. Basically these commands
are fine and coarse adjustments, however there are slight differences in how they work for dif-
ferent types of calibrations.
a. ZERO Calibrations (always done first). The only means of adjustment is the
CAL:DATA <VALUE>
command which provides a total of 4095 increments of adjustment start-
ing at 0, with 2047 increments in either direction to achieve maximum output levels of ±2.5% of
E
Onom
. Adjust the output to obtain the closest value to zero.
TABLE 4-4. CURRENT CALIBRATION MEASUREMENTS AND TOLERANCES
MODEL
SENSE
RESISTOR
VALUE
(SEE NOTE
AND TABLE 4-2)
CURRENT
ZERO
(TOLERANCE)
±FULL SCALE
CURRENT
±FULL SCALE
CPR LIMIT
MAX. MIN. TOLERANCE MAX. MIN. TOLERANCE
BOP 6-125MG
0.001 Ohm
0V
(±0.0013mV)
0.125V –0.125V ±0.013mV 0.125V –0.125V ±0.063mV
BOP 10-75MG
0.001 Ohm
0V
(±0.008mV)
0.075V –0.075V ±0.008mV 0.075V –0.075V ±0.038mV
BOP 20-50MG
0.001 Ohm
0V
(±0.005mV)
0.05V –0.05V ±0.005mV 0.05V –0.05V ±0.025mV
BOP 25-40MG
0.001 Ohm
0V
(±0.004mV)
0.04V –0.04V ±0.004mV 0.04V –0.04V ±0.02mV
BOP 36-28MG
0.001 Ohm
0V
(±0.003mV)
0.028V –0.028V ±0.003mV 0.028V –0.028V ±0.014mV
BOP 50-20MG
0.01 Ohm
0V
(±0.02mV)
0.2V –0.2V ±0.02mV 0.2V –0.2V ±0.10mV
BOP 72-14MG
0.01 Ohm
0V
(±0.014mV)
0.14V –0.14V ±0.014mV 0.14V –0.14V ±0.07mV
BOP 100-10MG
0.01 Ohm
0V
(±0.01mV)
0.1V –0.1V ±0.01mV 0.1V –0.1V ±0.05mV
REFER TO NOTES
FOR SENSE
RESISTOR VALUE
OTHER THAN
LISTED HERE
R
SENSE
SEE
NOTE.
SEE
NOTE A.
SEE
NOTE
B.
SEE
NOTE
B.
SEE
NOTE
B.
SEE
NOTE
C.
SEE
NOTE
C.
SEE
NOTE
C.
USE SPACE
PROVIDED AT
RIGHT FOR
CALCULATED
VALUES.
NOTES: The following formulas are used to calculate proper calibration values for Sense Resistors other than those
recommended.
R
SENSE
=
the measured value of the sense resistor in ohms (0.001% accuracy).
I
Onom
=
Nominal (rated) current output of BOP in Amperes (e.g., for BOP 50-20M,
I = 20A)
A. 0V, Tolerance = ±
(
R
SENSE
) x (0.1) x (
I
Onom
)--
result in mV.
B. (
R
SENSE
)
x (
I
Onom
)--
result in V, Tolerance =
±(
R
SENSE
) x (0.1) x (
I
Onom
)--
result in mV.
C. (
R
SENSE
)
x (
I
Onom
)--
result in V, Tolerance =
±(
R
SENSE
) x (0.5) x (
I
Onom
)--
result in mV.