INTRODUCTION The Keithley Model 196 System DMM is a five function autoranging digital multimeter. At 6 1/2 digit resolution, the LED display can display ±3,030,000 counts. The range of this analog-to-digital (A/D) converter is greater than the normal ±1,999,999-count A/D converter used in many 6 1/2 digit DMMs. The built-in IEEE-488 interface makes the instrument fully programmable over the IEEE-488 bus. The Model 196 can make the following basic measurements: 1. DC voltage measurements from lOOnV to 300V. 2. Resistance measurements from 100µΩ to 300MQ. 3. TRMS AC voltage measurements from 1µV to 300V. 4. DC current measurements from 1nA to 3A. 5. TRMS AC current measurements from 1nA to 3A. In addition to the above mentioned measurement capabilities, the Model 196 can make AC dB voltage and current measurements. FEATURES Some important Model 196 features include: • 10 Character Alphanumeric Display—Easy to read 14-segment LEDs used for readings and front panel messages. • High Speed Measurement Rate—1000 readings per second. • Zero-Used to cancel offsets or establish baselines. A zero value can be programmed from the front panel or over the IEEE-488 bus. • Filter—The weighted average digital filter can be set from the front panel or over the bus. • Data Store—Can store up to 500 readings and is accessible only over the bus. • Digital Calibration—The instrument may be digitally calibrated from either the front panel or over the bus. ® User Programmable Default Conditions—Any instrument measurement configuration can be established as the power-up default conditions. • Translator Software—User defined words (stored in nonvolatile memory) can be used to replace standard command strings over the IEEE-488 bus. • Offset Compensated Ohms—Used to correct for small error voltages in the measurement circuit.