Keithley 193A System Digital Multimeter

The Keithley 193A System Digital Multimeter is a instrument for precision measurement and automated testing. It delivers 6½-digit resolution across DC and AC voltage, current, resistance, and temperature measurement functions. The 193A integrates IEEE-488 programmability for direct integration into automated test systems, internal data storage for up to 500 readings, and configurable digital filtering to optimize measurement stability across demanding R&D, calibration, and manufacturing workflows. ## Technical Specifications **Measurement Ranges** • DC Voltage: 100 nV to 1000 V
• AC Voltage (TRMS): 1 µV to 700 V (with 1930 True RMS ACV option)
• DC Current: 1 nA to 2 A (with 1931 Current option)
• AC Current (TRMS): 1 nA to 2 A (with 1930 and 1931 options installed)
• Resistance (4-Wire): 200 Ω to 200 MΩ
• Temperature: RTD −100°C to 630°C; Thermocouple types J, K, T, E, R, S, B via IEEE-488
• dB measurements available
• TRMS AC + DC measurements supported **Performance** • Display: 14-character alphanumeric LED, ±2,200,000 counts
• A/D Converter: Greater than ±1,999,999 count range
• Measurement Rate: Up to 1000 readings per second (internal memory, filter and multiplex off)
• AC Voltage Bandwidth: Typically 500 kHz (3 dB) ## Key Features • Digital Filter: Weighted average, settable 1 to 99 readings via front panel or bus
• Zero Function: Offset cancellation and baseline establishment; programmable locally or over IEEE-488
• Internal Buffer: Stores up to 500 readings
• Digital Calibration: Accessible from front panel or IEEE-488 bus
• User-Programmable Defaults: Configure any measurement setup as power-up state
• Translator Software: Define custom command words for IEEE-488 operation ## Compatibility & Integration • IEEE-488 Interface: Full programmability and remote control
• Power: 105–125 V or 210–250 V, 50–60 Hz, 40 VA
• Optional voltage ranges: 90–110 V or 180–220 V
• Available Options: 1930 True RMS ACV, 1931 Current module, CAL calibration