BOUCHE LABS MODEL 2121F CHARGE AMPLIFIER

& MODEL 4121 POWER SUPPLY

BOUCHE LABS Model 2121F Charge Amplifier is low-priced and is used with piezoelectric transducers. The small overall dimensions and dc-power supply or battery operation is appropriate for use in the test laboratory or in the field.

An easy two step process is used for operation. First, dial the transducer sensitivity (1 to 1100 pC/g), second, select the gain switch position (1 to 10,000 mV/g.) Then the charge amplifier output is in mV/g.

Another attribute is the front panel switch for selecting a single-pole low-pass filter for suppressing resonances during shock tests.

The 2121F Charge Amplifier is supplied with +15 Vdc and -15 Vdc by the Bouche Labs Model 4121 ac-operated power supply. The power supply is capable of powering up to twenty Model 2120 series Bouche Labs charge amplifiers.

SPECIFICATIONS

INPUT    
  MODE   Single-ended
  GROUND (Insulated from case) ohms 10M
TRANSFER    
  SYSTEM SENSITIVITY   The gain is adjustable to provide output for transducer sensitivities from 1 to 1100 pC/g
  Transducer sensitivity dial pC/g 100-1100, 10-110, 1-11
  Amplifier gain mV/g 100 to 10000, 10 to 1000, 1 to 100
  ACCURACY (on any range) % +/-0.3
  GAIN STABILITY maximum per 1000 pF change in source capacitance % 0.1
  FREQUENCY RESPONSE, ref: 100 Hz    
  Filter Out: 10 Hz to 10000 Hz % +/-0.5
    at 5 Hz: % +0.2/-1.0
  Filter in: 5 Hz to 15 kHz % +/-5
    at 22 kHz, minimum dB -3
    at 28 kHz, minimum dB -10
    Terminal slope dB/Oct -18
  AMPLITUDE LINEARITY (ref:best straight line) % +/-0.2
  WARM-UP TIME min 1
  RESIDUAL NOISE (referred to input) pC 0.3 (rms)
  TRANSIENT DISTORTION    
  maximum time delay optional low-pass filter, any frequency 5 Hz to 15 kHz us 4
POWER REQUIREMENTS    
  SUPPLY VOLTAGE Vdc +15/-15, typical limits +14/-14 to +18/-18
  SUPPLY CURRENT mA 7.5, typical, 9.5 maximum, at +15/-15 Vdc
PHYSICAL    
  OVERALL DIMENSIONS in/cm 1.75 x 4.5 x 6.25/4.4 x 11.4 x 15.9
  FINISH   Anodized Aluminum
  WEIGHT lb 2
  CONNECTORS    
    Input   10-32 Microdot S-50 or equivalent
    Output   BNC, UG-1094/U or equivalent
ENVIRONMENTAL    
  OPERATING TEMPERATURE oF/oC +40 to +125/+5 to +52
  STORAGE TEMPERATURE oF/oC -65 to +185/-54 to +85
  RELATIVE HUMIDITY, maximum % 95
ACCESSORIES SUPPLIED    
  Instruction manual, and mating connector for supply voltages.    
CALIBRATION SUPPLIED    
  Bouche Labs Charge Amplifier Calibration Service No. 11, or Accelerometer Calibration Service No. 7 with Bouche Labs or customer accelerometer calibrated as a system with the Model 2121F Charge Amplifier.    

Bouche Labs reserves the right to change these specifications without notice.

BOUCHE LABS:720 North Ventura Road, Ste. 4, Port Hueneme, CA 93041, (805) 271-1000, FAX (805) 271-1001