KEPCO BIT 4882F - Manual (Page 26)

3-6
BIT 4882 030507
5. Adjust control R36 (opposite direction from step 4 above) until the readback value is 0.0
using MEASURE commands (see step 2) as needed. Once a stable value of 0.0 is reached,
continue rotating R36 four full (360°) turns in the same direction. Verify readback current is
0.0 using MEASURE commands (see step 2) as needed.
TABLE 3-2. CALIBRATION MEASUREMENTS AND TOLERANCES - CURRENT
MODEL
SENSE RESISTOR VALUE
(SEE NOTES AND TABLE 3-3)
OUTPUT
CURRENT
ZERO
FULL SCALE
CURRENT
ACCURACY
BOP 100-1M
BOP 200-1M
1 Ohm
0V
±0.000025V
1V (MAX)
-1V (MIN)
±0.000150V
BOP 50-2M
BOP 100-2M
1 Ohm
0V
±0.00005V
2V (MAX)
-2V (MIN)
±0.00030V
BOP 72-3M 1 Ohm
0V
±0.000075V
3V (MAX)
-3V (MIN)
±0.0006V
BOP 50-4
BOP 100-4M
1 Ohm
0V
±0.0001V
4V (MAX)
-4V (MIN)
±0.0008V
BOP 20-5M 0.1 Ohm
0V
±0.0000125V
0.5V (MAX)
-0.5V (MIN)
±0.0000750V
BOP 36-6M
BOP 72-6M
0.1 Ohm
0V
±0.000015V
0.6V (MAX)
-0.6V (MIN)
±0.000090V
BOP 50-8 0.1 Ohm
0V
±0.00002V
0.8V (MAX)
-0.8V (MIN)
±0.00012V
BOP 20-10M 0.1 Ohm
0V
±0.000025V
1.0V (MAX)
-1.0V (MIN)
±0.000150V
BOP 36-12M 0.1 Ohm
0V
±0.00003V
1.2V (MAX)
-1.2V (MIN)
±0.00018V
BOP 20-20M 0.01 Ohm
0V
±0.0000005V
0.2V (MAX)
-0.2V (MIN)
±0.0000030V
REFER TO NOTES IF EXACT
SENSE RESISTOR VALUE IS
KNOWN.
R
SENSE
SEE
NOTE.
SEE
NOTE A.
SEE NOTES C AND
D
USE SPACE PROVIDED AT
RIGHT FOR CALCULATED
VALUES.
NOTES: The following formula is used to calculate proper calibration values if the exact Sense Resistor value is
known.
R
SENSE
= the measured value of the sense resistor to 6 places (minimum).
I = Rated current output of BOP (e.g., for BOP 50-4M,
I = 4)
( R
SENSE
)
(I) (0.00075)
[FOR MODELS WHERE
I = 3
OR
4
USE ( R
SENSE
)
(I) (0.00012)]