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System 6000
Model 6050 Piezoelectric Card


Features
  • Complete piezoelectric signal conditioner with 16-bit analog-to-digital converter.
     
  • Supports both VM (voltage mode, low impedience) and CM (charge mode, high impedience) type piezoelectric transducers.
     
  • Programmable constant current excitation supply for VM transducers is software settable to 1, 2, 4, 5, 10 and 20 mA.
     
  • Programmable gain steps of 1, 2, 5, and 10 for VM transducers and steps of 1, 2, 5, 10, 20, 50 and 100 for CM transducers.
     
  • Programmable digital filter
     
  • Fixed low-pass anti-aliasing filter (six-pole)
     
  • Input connections to user's transducer via BNC connector
Specifications

Channels:
One per card.
Inputs:
Voltage mode (VM) or charge mode (CM) piezoelectric type transducers (type is switch-selectable)
 
Coupling:
CM type - charge amplifier with software-selectable time constants of 0.5 and 5 seconds.
VM type - ac coupling to remove dc bias voltage with high pass response of 0.1 Hz
(-3dB).
 
Input Connector:
Female BNC.
Amplifier:
 
Zero Temperature Stability:
± 10 microvolt/° C RTI typical, after 30-minute warm-up.
 
Charge Amplifier Zero Stability:
± 1.2 pC/° C RTI typical at 0.5 second time constant.
 
DC Gain Accuracy and Stability:
±0.1% at +23°C; ±25 ppm/°C
 
AC Accuracy: (typical at X2 gain step)
Input Frequency/Bandwidth: 500/3000 50/200
Spurious Free Dynamic Range: 100 dB 110 dB
Signal to Noise: 90 dB 95 dB
Signal to Distortion: 100 dB 110 dB
Measurement Ranges:
±10.5V, ±5.25V, ±2.1V, and ±1.05V for VM type transducers
 
±200 000 pC, ±100 000 pC, ±40 000 pC, ±20 000 pC, ±10 000 pC, ±4000 pC, and ±2000 pC for CM type transducers
 
Resolution:
0.0015% of range
 
Excitation:
0, 1, 2, 4, 5, 10 and 20 mA selections for VM type transducers
Accuracy: ±1% + (±30microamp) typical at 1 to 20 mA.
 
Voltage Compliance: 0 to 28V.
 
Temperature Stability: ±50ppm/° C.
A/D Converter:
 
Type:
16-bit successive approximation with integrated sample and hold
 
Integral Linearity Error:
±2 LSB
Filters:
  Linear phase, analog, 6-pole anti-aliasing filter, and 256-tap, programmable, FIR digital filter (lowpass)
 
Passband Frequency: User-selectable 1 Hz to 4 kHz

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