Keithley 191

The Keithley 191 DMM is a programmable, 5½-digit (2,000,000 counts) digital multimeter. DC volts and Ohms functions are standard, AC Volts and GPIB optional. There are no current ranges excerpt with an external adapter.

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 Images

File	Pos.	Checksum

(All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

Key Specifications

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Links

Documents Referencing Keithley 191

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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 • 156-2413-00 • 156-5472-01	Monolithic integrated circuit	8-bit microprocessor	021-0206-00 • 021-0374-00 • 067-0902-00 • 067-1137-99 • 222 • 222A • 222PS • 2424L • 2445 • 2465 • 2467 • 4051 • 7250 • 7912 • 7912AD • 7A16P • 7A29P • 7B81P • 7B90P • 833 • 834 • 835 • 836 • CG5001 • CG551AP • CG5010 • CG5011 • DF1 • DF2 • DM5010 • FG5010 • MI5010 • SI5010 • PS5004 • PS5010 • SG5010 • Keithley 181 • Keithley 182 • Keithley 175 • Keithley 175A • Keithley 191 • Keithley 192 • Keithley 195 • Keithley 195A • Keithley 197 • Keithley 220 • Keithley 224 • Keithley 230 • Keithley 263 • Keithley 485 • Keithley 580 • Keithley 617
Motorola 6821	156-0427-03 • 156-1205-00	Monolithic integrated circuit	"Peripheral Interface Adapter (PIA)"	067-1137-99 • 4052 • 4052A • 4054 • 4054A • Keithley 191 • 7250 • 7A16P • 7A29P • 7B90P • CG551AP • CG5001 • CG5010 • CG5011