MSB780(X) - User’s Guide
q = ¯y − k¯x (7)
where:
x
i
is the MSB780 or MSB780X reading at ith point
y
i
is the reference reading at ith point
n is the number of calibration points
Sequence of steps:
1. Read the old k and q values, write them down.
2. Set the k and q values to default values, k = 1, q = 0 using cset<cr> command.
3. Compare the MSB780 or MSB780X reading against the reference at the first point, write
down the values. For example MSB780: 750.12, reference: 750.35.
4. Repeat the previous point until you have as many calibration points you want.
5. Compute the coefficients using 6 and 7
6. Write the new k and q values to MSB780 or MSB780X memory using command cset<cr>,
as documented in section 6.36 on page 49.
5.7 “caset” Adjust the analog output
Connect a multi-meter to the analog output and input measured voltage / current values.
Command:
1. without parameter: print of instructions and ranges,
2. one parameter: range(for adjust 1, 2, 3) see table 8, User friendly adjustment - barometer
generate 10 % selected range and ask for value of which the user sees. After entering,
the set 90 % selected range and ask for value of which the user sees again. Then will be
computed the k and q coefficients and save it.
3. three parameters: range(for adjust 1, 2, 3) k - coefficients, q - coefficients,
Example:
caset 3<cr>
10% set, insert value you see at output<cr><lf>
2.00061<cr>
30
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