Keithley 191

5½-digit multimeter

Produced from 1979 to (?)

Manuals

Keithley 191 Instruction Manual (Rev.A 1979, with schematics)
Keithley 191/192 TRMS Option Manual (Rev.A 1981)

ROM/PLD Images

File	Pos.	Checksum

(Manuals are OCRed PDF files unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Keithley 191 DMM is a programmable, 5½-digit (200,000 counts) digital multimeter. DC volts and Ohms functions are standard, AC Volts optional. There are no current ranges excerpt with an external adapter.

Key Specifications

Voltage DC	200 mV to 1200 V full scale in decade ranges
Voltage AC	2 V to 1000 V full scale in decade ranges (Option 1910)
Resistance	200 Ω to 20 MΩ full scale in decade ranges
Power	25 VA

Links

Documents Referencing Keithley 191

(no results)

Pictures

Components

Some Parts Used in the Keithley 191

Part	Part Number(s)	Class	Description	Used in
LM399	156-0783-00	Monolithic integrated circuit	heated zener reference	DM5120 • DM5520 • Keithley 181 • Keithley 182 • Keithley 191 • Keithley 192 • Keithley 193A • Keithley 196 • 1410 • 1411 • 1412
Motorola 6800	156-0426-00 • 156-0426-04 • 156-2413-00	Monolithic integrated circuit	8-bit microprocessor	021-0206-00 • 021-0374-00 • 067-0902-00 • 067-1137-99 • 2211 • 2445 • 2465 • 2467 • 4041 • 4051 • 4662 • 4663 • 4692 • 4924 • 4907 • 7912 • 7912AD • 7A16P • 7A29P • 7B81P • 7B90P • 833 • 834 • 835 • 836 • AA5001 • CG5001 • CG551AP • CG5010 • CG5011 • DA4084 • DF1 • DF2 • DM5010 • FG5010 • MI5010 • SI5010 • PS5004 • PS5010 • SG5010 • TDS540 • Keithley 181 • Keithley 191 • Keithley 192 • Keithley 195 • Keithley 195A • Keithley 220 • Keithley 224 • Keithley 230
Motorola 6821	156-0427-03 • 156-1205-00	Monolithic integrated circuit	Peripheral Interface Adapter (PIA)	067-1137-99 • 4041 • 4052 • 4052A • 4054 • 4054A • 4662 • 4692 • Keithley 175 • Keithley 191 • 50M10 • 50M20 • 50M30 • 50M40 • 50M70 • 7250 • 7A16P • 7A29P • 7B90P • CG551AP • CG5001 • CG5010 • CG5011