Keithley 199

5½-digit multimeter

Produced from 1988 to (?)

Manuals

Keithley Model 199 Instruction Manual
(with schematics)
Keithley Model 199 Quick Reference
Keithley Model 199 DMM/Scanner Addendum

ROM/PLD Images

File	Pos.	Checksum
Keithley_199-800_A4.bin	A4

(Manuals are OCRed PDF files unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Keithley 199 System DMM/Scanner is a 5½-digit, True-RMS, auto-ranging digital multimeter.

Key Specifications

Voltage	300 mV to 300 V in decade ranges, DC and AC
Input impedance	10 MΩ in DC V (≥1 GΩ in 0.3 and 3 V ranges), 1 MΩ // 100 pF in AC V
Current	30 mA and 3 A ranges, DC and AC
Resistance	300 Ω to 300 MΩ in decade ranges (4-Wire)
Resolution	5½ digits (302,999 counts)
Display	10 character alphanumeric (14-segment) LED display
Power	105-125 or 210-250 V, 50-60 Hz, 20 VA (Optional 90-110 V or 180 V-220 V ranges)
Features	Switchable front/rear inputs (no current at rear input) GPIB standard
Options	Input multiplexer (8-channel 2-pole, or 4-channel 4-pole) (Model 1992)

Links

Pictures

Front
Back
Bottom PCB
Internal with GPIB
Internal
Internal open
GPIB top
GPIB bottom

Components

Some Parts Used in the Keithley 199

Part	Part Number(s)	Class	Description	Used in
27256		Monolithic integrated circuit	32K×8 EPROM	1725 • 2211 • 2710 • 370 • 370A • 370B • 371 • 371A • 371B • 4041 • 7250 • AFG5101 • AFG5102 • DM511 • DM5110 • CG5011 • FG5010 • Keithley 199 • PFG5105 • PM403 • PM406 • PM407 • SPG-271
AD637		Monolithic integrated circuit	Wideband RMS/DC converter	DM5120 • DM5520 • Keithley 175 • Keithley 199
MOS Technology 6522	156-1539-00	Monolithic integrated circuit	"Versatile Interface Adapter (VIA)"	FG5010 • MI5010 • SI5010 • Keithley 181 • Keithley 181A • Keithley 192 • Keithley 193A • Keithley 195 • Keithley 195A • Keithley 196 • Keithley 199 • Keithley 220 • Keithley 224 • Keithley 230
Motorola 6809	156-1494-00 • 156-1494-01	Monolithic integrated circuit	8-bit microprocessor	2424L • 2430 • 2430A • 2440 • 7D20 • 7250 • DM5120 • DM5520 • Keithley 193A • Keithley 196 • Keithley 199
TMS9914	156-1444-00 • 156-1444-01 • 156-6223-02	Monolithic integrated circuit	GPIB controller	11301 • 11301A • 11302 • 11302A • 2220 • 2221 • 2224 • 2230 • 2424L • 2430 • 2430A • 2440 • 370 • 370A • 370B • 371 • 371A • 4041 • 4052A • 4054A • 021-0374-00 • 067-1137-99 • AA5001 • AM700 • DA4084 • DC5009 • DC5010 • DM5010 • DM5110 • DM5120 • DM5520 • FG5010 • MI5010 • SG5010 • SG5030 • SI5010 • SI5020 • PS5004 • PS5010 • Keithley 175 • Keithley 175A • Keithley 182 • Keithley 193A • Keithley 195 • Keithley 195A • Keithley 196 • Keithley 197 • Keithley 199 • Keithley 220 • Keithley 224 • Keithley 230 • Keithley 263 • Keithley 485 • Keithley 617 • TDS420 • TDS420A • TDS460 • TDS520