Generac Power Systems H-100 technical manual POLY1STN2, Current Calscale

Appendix A

H-100 Control Panel Technical Manual

Where:

M is the calibration factor

A, B, C are polynomial coefficients

S is the scaling factor

Calibration	= M * 1024
Coefficient 3	= C
Coefficient 2	= B * 1024
Coefficient 1	= A
Scaling	= S * 1024

POLY_1ST_N2:

First order polynomial with 4 coefficients and a scal- ing factor

X = raw_analog

(A + BX + CX-1 + DX-2) * S Where:

A, B, C, D are polynomial coefficients

S is the scaling factor

Coefficient 3	= D
Coefficient 2	= C
Coefficient 1	= B * 1024
Calibration	= A
Scaling	= S * 1024
CFM_SENSOR:

First order polynomial with 4 coefficients and a scal- ing factor

X = raw_analog - learned_offset (A + BX + CX-1 + DX-2) * S

Where:

A, B, C, D are polynomial coefficients

S is the scaling factor

Coefficient 3	= D/32
Coefficient 2	= C
Coefficient 1	= B * 32768
Calibration	= A * 64
Scaling	= S * 1024

CURRENT:

CAL_SCALE:

Implements a scaling factor and a calibration factor

X = M * raw_analog

X * S

Where:

M is the calibration factor

S is the scaling factor

Calibration	= M * 1024
Scaling	= S * 1024

GEN_FP_POLY:

Third order polynomial with 4 coefficients

X = raw_analog

AX3 + BX2 + CX + D

Where:

A, B, C, D are 16 bit floating point polynomial coefficients

Coefficient 3 = A

Coefficient 2 = B

Coefficient 1 = C

Calibration = D

Amplitudes from 0.00000005961 (256 E-16) to 1,098,437,885,952 (1023 E+15) are possible with this representation with at least 9 significant bits.

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