Macro Sensors LVC-2500, Руководство пользователя

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3.0 Setting Up (cont.)
3.0 Setting Up (cont.)
16
Manual Part No. 0653 0003 0000 Rev B
Step 1 - Set-up LVC links
If the transducer characteristics are known, set the frequency and input resistance links as required. If the transducer
characteristics are not known, the factory default link settings should be used.
If the transducer is known to be outside the standard sensitivity range, the X2, X5 or DIV2 links will have to be used. Please
refer to section 5.1
Step 2 - Mechanically align LVC and transducer null
Any electrical offset in the LVC is removed. The transducer core position is adjusted so that transducer and LVC nulls are
aligned.
Null the LVC
1 Move the coarse gain link jumper to the
NULL position. This puts a temporary short across the
transducer input and allows any electronics offset to be removed
2 Adjust the
ZERO
control to give as near zero electrical output as practical
Null the transducer
3 Move the coarse gain link jumper from
NULL back to its original position
4 Adjust the position of the transducer core to give as near zero electrical output as practical.
This is the center of the mechanical range
If the transducer cannot be centered for practical reasons, an offset will remain within the system. There may be noticeable
interaction between
SPAN
and
ZERO
adjustment. This does not prevent the LVC being set-up, although several iterations may be
required when adjusting SPAN and ZERO .
COURSE GAIN
6 5 4 3 2 1
NU
LL
BW
L
H
3.2 Set-up Procedure
COARSE GAIN