Keithley 197

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Keithley 197
5½-digit digital multimeter
Keithley 197

Produced from (?) to (?)

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Keithley 197 is a 5½-digit, 220,000-count LCD auto-ranging digital multimeter marketed as a "Microvolt DMM" because it has 1 μV display resolution in the 200 mV range. It has basic logging capabilities and optional GPIB.

Compared to the earlier Keithley 177 Microvolt DMM, it lacks the 20 mV/20 μA/20 Ω range but has one more digit resolution.

Key Specifications

DC Voltage 200 mV to 1000 V FS in decade ranges, 1 μV to 10 mV LSD
DC Current 200 μA to 10 A FS in decade ranges, 1 nA to 100 μA LSD
AC Voltage 200 mV to 750 V FS in decade ranges, True RMS
AC Current 200 μA to 10 A FS in decade ranges, True RMS
Resistance 200 Ω to 200 MΩ FS in decade ranges, 1 mΩ to 10 kΩ LSD, diode test in 2 kΩ and 200 kΩ ranges
Options
  • 1972A: GPIB and Analog output
  • 1973: GPIB

Links

Internals

The GPIB interface communicates with the base instrument over an opto-isolated serial port. It uses a separate MC146805 CPU.

Pictures

please add

Components

Some Parts Used in the Keithley 197

Part Part Number(s) Class Description Used in
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 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 6820 156-0427-00 Monolithic integrated circuit "Peripheral Interface Adapter (PIA)" 021-0206-00 7A16P 7B81P 7B90P Keithley 175A Keithley 197 Keithley 485 Keithley 580
NEC μPD7225 Monolithic integrated circuit LCD driver Keithley 175A Keithley 197 Keithley 485 Keithley 580
TMS9914 156-1444-00 156-1444-01 Monolithic integrated circuit GPIB controller 11301 11301A 11302 11302A 2221 2230 2424L 2440 4052A 4054A 021-0374-00 067-1137-99 AM700 DC5009 DC5010 DM5010 DM5110 DM5120 DM5520 FG5010 MI5010 SG5010 SG5030 SI5010 PS5004 PS5010 Keithley 193A Keithley 195 Keithley 195A Keithley 196 Keithley 197 Keithley 199 Keithley 220 Keithley 224 Keithley 230 Keithley 263 Keithley 617