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Precision Signal Source

Precision Signal Source

Precision Signal Source

Product catalog summary
Applications
  • Vibration Monitoring System
  • Test Cell Instrumentation
  • Field Test Systems
  • Test Engineering and R&D Facilities
  • Control Instrumentation
Features
  • Differential or single-ended charge output
  • Low impedance AC or DC millivolt output
  • Average, RMS, or Peak units
  • Four-digit LCD readout
  • Operates with AC or battery power
Description

The CEC 2700 Precision Signal Source is designed to calibrate instrumentation systems by providing accurate signals that simulate charge or millivolt outputs from piezoelectric accelerometers or other motional transducers. It is portable, easy to set up, and allows calibration at specific test or operating conditions with adjustable frequency and output levels. The device can convert between units of acceleration, velocity, and displacement for vibration systems calibration.

Technical Specifications
  • Charge Output: Available as single-ended and differential, sinewave at RPM rate.
  • Charge Capacitance: 1000 picofarads ±3.5%
  • AC Millivolt Output: Single-ended sinewave, impedance 50 Ω, max output current 10 mA.
  • Output Units: Average, RMS, or Peak selectable via front panel.
  • DC Millivolt Output: Single-ended DC signal, impedance 50 Ω, max output current 10 mA.
  • Amplitude: Adjustable in two ranges: 10.0 to 199.9 millivolts/picocoulombs or 200 to 1999 millivolts/picocoulombs.
  • Amplitude Accuracy: ±0.05% ±1 count.
  • Frequency: Calibrated as RPM, adjustable from 500 to 99999 RPM.
  • Frequency Accuracy: ±0.01%.
  • Noise: 1% of full scale amplitude, max.
  • Distortion: 3% max at 99999 RPM.
  • Tachometer Outputs: Four outputs, one fixed at 1 PPR, others adjustable.
  • Tachometer Amplitude: ±5 volt square wave.
  • Power: Rechargeable NiCad battery or 115/220 VAC.
  • Operating Temperature: AC: +32°F to +122°F, Battery: +40°F to +122°F.
  • Storage Temperature: -4°F to +139°F.
  • Weight: 8 lbs (without cables).
Ordering Information

To order the CEC 2700 Precision Signal Source, contact your local CEC representative or CEC directly. The instrument includes an AC power cord, NiCad batteries, and an operator’s manual. Cables are sold separately. Order numbers: 2700-0105 (No Tachometer), 2700-0200 (Includes Tachometer Output).

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Catalog excerpts

Precision Signal Source-1

2700 Precision Signal Source Applications • Vibration Monitoring System • Test Cell Instrumentation • Field Test Systems • Test Engineering and R & D Facilities • Control Instrumentation Features • Low impedance AC or DC millivolt output • Average, RMS, or Peak units • Four-digit LCD readout • Operates with AC or battery power Description Designed to calibrate instrumentation systems, the portable CEC 2700 Precision Signal Source provides accurate signals that simulate charge or millivolt outputs from piezoelectric accelerometers or other motional transducers. This portable instrument is easy to set-up and use. Unlike other fixed-setting calibrators, the CEC 2700 lets you calibrate systems at specific test or operating conditions because you can adjust the frequency and output level to any value within their range. Also, you can convert between units of acceleration, velocity and displacement when calibrating vibration systems. The heart of the CEC Precision Signal Source is a microprocessor-based quartz crystalcontrolled synthesized oscillator. It is adjustable in 0.1 Hz increments from 10.0 to 9999.9 Hz using the five-digit front panel thumbwheel switch. All outputs are derived from this stable and accurate oscillator. Output levels are set at the front panel with the COARSE and FINE OUTPUT ADJUST controls. The differential and single-ended charge outputs are developed from the oscillator, and an A/D voltage converter supplies the DC millivolt output. ISO 9001:2000 AS9100 Certified CEC Vibration Products • 746 Arrow Grand Circle • Covina, California 91722 • USA (626) 938-0200 • (800) 468-1345 • Fax: (626) 938-0202 • www.cecvp.com Monitoring Systems • Differential or single-ended charge output

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Precision Signal Source-2

2700 Precision Signal Source Performance Specifications Ordering Information Charge Output: Available as single-ended and differential, the output is a sinewave at the RPM rate (Hz = RPM/60) To order the CEC 2700 Precision Signal Source, contact your local CEC representative or CEC directly. The instrument includes AC powercord, NiCad batteries and operator’s manual. Cables are sold separately. Charge Capacitance: 1000 picofarads ±3.5% AC Millivolt Output: Single-ended sinewave at the RPM rate. Impedance is 50 Ω. Maximum output current is 10 mA. Output Units: Selected by a front panel control...

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