Owner's manual

LDX-3A

5.0: Setting up the Transducer and LDX-3A (continued)

M-1633/0905

5.2: Basic Procedure

STEP 1 - Set-up LDX-3A Links

If the transducer characteristics are known, set the frequency and input resistance links as required. If the transducer

characteristics are not known, the standard link settings should be used.

If your transducer is known to be outside of the standard sensitivity range, the X2 or DIV2 links will have to be used.

See section 5.3.

STEP 2 - Align LDX-3A Null and Transducer Null

Any electrical offset in the LDX-3A is removed. The transducer position is adjusted so that transducer and LDX-3A nulls

are aligned.

Null the LDX-3A.

1. Put the Gain link on position (7) as shown. This allows any electronics offset in the

output stage to be removed.

2. Adjust the Fine Offset control to give as near to zero output as practical.

Null the transducer.

1. Replace the Gain link to the original position.

2. Adjust the position of the transducer to give as near to zero output as practical.

This is the centre 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 Gain and Offset adjustment. This does not prevent the LDX-3A being set-up, however

several iterations may be required when adjusting Gain and Offset. Please contact your supplier if guidance is required.

1 2 3 4 5 6 (7)

FREQ

(ON)

(OFF)

NULL