• Test Cell Instrumentation
• Automotive R&D
• Aerospace Flight Testing
• Modal Analysis

• Low Impedance Output
• Extremely Low Noise
• User Selectable Gain
• Wide Frequency Response
• Acceleration and Velocity Outputs

The CEC model 1-328-0XXX is a remote Charge Converter designed for differential piezoelectric transducers. It converts high impedance charge input to low impedance AC mV output, providing both acceleration and proportional velocity signals. The output is proportional to the pC charge input with a constant gain, featuring selectable output gain of x2 or x10 and a frequency response of 5Hz to 10kHz. It operates on a 24 Vdc compliance voltage.

• Inputs: Differential piezoelectric transducer with shield connected to case, 50 kΩ minimum resistance, 30,000 pF maximum capacitance, maximum input charge of 3,750 pC (x2 Gain) or 750 pC (x10 Gain).
• Outputs: Acceleration or Velocity, single-ended with one side connected to signal ground, 50 Ω maximum output impedance, 30,000 pF maximum capacitance load, 20 V pk-pk maximum signal output at 24 Vdc.
• Transfer Characteristics: Gain accuracy of ±2.5% at 1000 pF and 100 Hz, gain stability <1%, frequency response flat within pass band frequencies, roll-off -40 dB/octave.
• Power: 22 Vdc to 31 Vdc, 20 mA current, 10 seconds warm-up time.
• Enclosure: Aluminum case, dimensions 5.50” x 1.66” x 1.805”, weight 12 oz.
• Environmental: Operating temperature -15° to +85° C, storage temperature -65° to +125° C, MTBF = 30,000 hours, CE Industrial Class A approval, 0 - 95% RH non-condensing humidity, 8 g pk vibration from 50 – 2000 Hz, 100g peak shock with 3.6msec Haversine Pulse, 105 Rads radiation.

Specifications may change without notice. High pass filter options are available as per Table 1.

• 1-328-0005: 5 Hz
• 1-328-0010: 10 Hz
• 1-328-0015: 15 Hz
• 1-328-0020: 20 Hz
• 1-328-0025: 25 Hz
• 1-328-0050: 50 Hz
• 1-328-0070: 70 Hz
• 1-328-0150: 150 Hz