Справочник Пользователя для National Instruments NI 9144

The NI 9263 has four channels with a nominal range of ±10.7 V. Each 
channel has an associated LSB weight, which is the number of volts per bit, 
and an offset, which is the number of volts per bit measured when the inputs 
are grounded.

LSB weight is referred to as Gain in the object dictionary.

The calibration data is stored in a U32 array, though each Offset field 
(subindex 1, 3, 5, and so on) should be interpreted as a signed value.

Use the calibration coefficients with the following equation to generate 
corrected data:

Table 56.  NI 9263 Vendor Configuration Extensions

0x2100

0

ARR:U32

—

Calibration = 16

1

R

Ch0 Offset

2

R

Ch0 Gain

3

R

Ch1 Offset

...

...

8

R

Ch3 Gain

9

R

External Ch0 
Offset

...

...

Table 57.  NI 9263 Scan List Format

LSB Weight

Unsigned

nV/LSB

Offset

Signed

nV

(

)

•

---------

⎝

⎠

⎛

⎞ 10

9

–

•

-------

⎝

⎠

⎛

⎞ Offset nV

(

) 10

9

–

-------

⎝

⎠

⎛

⎞

•

+

=