This instrument is of solid-state, hybrid design with a long history of reliability. The fundamental design is conceptually simple and straightforward (see block diagram). The Model CR-103/J is comprised of two complete instruments. The dc voltage section is an ultra-stable, chopper stabilized amplifier with selectable precision resistors in the feedback loop. The temperature compensated, aged zener diode is the reference for the entire instrument. The dc current section is essentially the same configuration plus a precision, reference resistor. Years of experience, experimentation and testing has produced this fine instrument.

The most important features of these instruments are STABILITY and LOW NOISE!

EVALUATION
We sincerely recommend that you evaluate the performance. EDC instruments must meet not only the published specifications, but they must meet your engineering applications or the instruments may be returned without obligation (complete details upon request).

APPLICATIONS (Current Mode)

• Transducer calibration and simulation 4mA to 20mA and 10mA to 50mAdc ratings.
  (Note the 100V compliance capability).

• Precision Resistance Testing

• Diode Testing and Evaluation

• Relay Threshold Testing

• Testing of semiconductors and Capacitors.

APPLICATIONS (Voltage Mode)

• Thermocouple Systems for Calibration and Simulation

• A/D and D/A Converter Calibration

• Calibration of DVMs, DMMs and Analog Meters

• Linearity and Gain Testing of Amplifiers

• Calibration/Simulation/Testing of Process Control Systems and Data Logging Systems

• Data Logging Systems with applications for: Field Service Departments Design and Development Engineering Departments Quality Assurance and Control Departments