iPecs Lab 104441-01, Руководство пользователя

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System Calibration
STEP 8
Repeat Step 7 for Command control setting Test Pat-
tern Low and press w Send . The DCM output voltage d d
should be set to positive 2.4 volts , approximately.
Important Note: Open the workbook in Excel and select
the worksheet Customer DAS Calib Overall to see the l
form illustrated in the table above.
This should fi ll the cells corresponding to strains labeled
A135, A225, A315, S0, S90, S180, S270 and ZSUM.
The Scale Factor should be approximately -0.5, and the
offset should be near zero. Any differences between
channels represent analog circuit errors.
DCM Customer DCM System Analog Readings (Volts) Scale Factor (Multiplier)
Zero Offset
(Volts)
SIGNAL NAME J3 Pin Pin/Wire DCM Low Output DCM High Output iPecs A/D > DCM D/A > DAS A/D
A135 2 1.0 0.0000
A225 3 1.0 0.0000
A315 4 1.0 0.0000
S0 5 1.0 0.0000
S90 6 1.0 0.0000
S180 7 1.0 0.0000
S270 8 1.0 0.0000
ZSUM 12 1.0 0.0000
Do not type in the grey shaded cells as they contain formulas.
Customer data acquisition voltage measurements for the Test
Pattern High should be placed in the column labeled h DAS High
Output . Similarly, measurements for t t Test Pattern Low should be w
placed in the column labeled DAS Low Output . t t
You may need to force Excel to Calculate Now to update w Scale
Factor and Offset values .
Remember to save your work.