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System 6000
Model 6040 LVDT Card :

Model 6040 LVDT Card
Features :
  • Complete LVDT signal conditioner with 16-bit analog-to-digital converter
     
  • Programmable digital filter
     
  • Independent ac excitation supply
     
  • Programmable gain steps of 1, 2, 5, and 10
     
  • Supports six-, five-, four-, and three-wire transducers
     
  • Fixed low-pass anti-aliasing filter (six-pole)
     
  • Excitation reference provided for calibration
     
  • Input connections to user's transducer via nine-pin D-sub connector
Specifications :

Channels:
One per card.
Inputs:
Full-bridge and half-bridge transducers.
 
Input Impedance:
10 M each input.
 
Source Current:
±2 nA typical; ±100 nA max.
Input Connector:
Nine-pin D-sub style.
Amplifier:
 
Zero Temperature Stability:
2 microvolt/° C RTI, typical. ±100 microvolt/° C RTO, after 30-minute warm-up.
 
Gain Accuracy & Stability:
±0.25% typical
 
Common-Mode Rejection (dc to 60 Hz):
86 dB typical at X1 gain
94 dB typical at X10 gain
 
Common-Mode Voltage:
±12V typical
Measurement Ranges:
±0.5, ±1, ±2.5, ±5 Vrms
 
Resolution:
15.25, 30.5, 76.2, 152.5 microvolt rms
Calibration:
Excitation sample.
 
Excitation:
3.0 Vrms at 2500, 5000, or 10 000 Hz sine wave. Software-selectable.
 
Accuracy:
±5 mVrms typical.
 
Current:
±50 mA max. Over-current protected.
 
Load Regulation:
<±0.1% of full scale for a load variation of 10% to 100% of full load.
 
Temperature Stability:
Better than ±0.05%/° C.
A/D Converter:
 
Type:
16-bit successive approximation with integrated sample and hold.
 
Integral Linearity Error:
±2 LSB
Filters:
  Butterworth, six-pole anti-aliasing analog filter, and 256-tap, programmable, FIR digital filter (lowpass)
 
Passband Frequency:
User-selectable 1 Hz to 4 kHz

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