Owner's manual

LDX-3A
5.0: Setting up the Transducer and LDX-3A (continued)
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M-1633/0905
5.3: Transducer Sensitivity and the X2, X4, DIV2 Link
The LDX-3A compensates for changes in primary signal amplitude by producing an internal error signal that is the ratio
between the primary and secondary signals. If the transducer output signal is too high or too low, errors may occur that
can degrade the performance of the LDX-3A / transducer combination. For these transducers, the X2, X4 or DIV2 input
gain link must be used.
Transducer Full Range Output
In general, transducer sensitivity is quoted as mV/V/mm
Where: mV is the output of the transducer
V is the primary voltage
mm is the mechanical position of the transducer from null (usually mid mechanical range).
To get the transducer Full Range Output, multiply all three together.
Example: GP011-1 sensitivity is 210 mV/V/mm
GP911-1 range is ±1 mm
LDX-3A primary voltage 3V
Transducer Full Range Output = 210 x 3 x 1 = 630 mV (0.63V)
Set the X2, X4, DIV2 link as shown in the table below.
Transducer Full Range Output Input Gain Link Setting
400mV FR to 2500mV FR Standard Range - Link Parked on X2
2500mV FR to 5000mV FR High Transducer Output - Link ON DIV2
150mV FR to 400mV FR Low Transducer Output - Link ON X2
55mV FR to 150mV FR Very Low Transducer Output - Link ON X4