Keithley 195A: Difference between revisions

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* [[Media:Keithley 195-901-01F.pdf|Keithley 195A manual, Rev.F, 1991]]
* [[Media:Keithley 195-901-01F.pdf|Keithley 195A manual, Rev.F, 1991]]
* [[Media:Keithley 195A-093-01A.pdf|Keithley 195A Programming Manual]]
* [[Media:Keithley 195A-093-01A.pdf|Keithley 195A Programming Manual]]
{{ROM Images}}
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The '''Keithley 195A''' is a 5½-digit LED True-RMS, auto-ranging digital multimeter.  It features a standard GPIB interface.   
The '''Keithley 195A''' is a 5½-digit LED True-RMS, auto-ranging digital multimeter.  It features a standard GPIB interface.   

Revision as of 03:21, 29 July 2024

Keithley 195A
5½-digit TRMS digital multimeter
Keithley 195A

Produced from 1984 to (?)

Manuals
ROM Images
File Pos. Checksum
Keithley 195A-800-A1 U112 b774cf4a
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Keithley 195A is a 5½-digit LED True-RMS, auto-ranging digital multimeter. It features a standard GPIB interface. Current and True RMS ranges are optional (Opt. 1950).

Key Specifications

Voltage (DC) 20 mV to 1000 V full scale in decade ranges; >1 GΩ input resistance (10 MΩ in 20 V and above ranges)
Voltage (AC) 200 mV to 700 V full scale in decade ranges; 2 MΩ // 75 pF; 250 kHz; True RMS; Crest factor <3:1
Current (DC) 20 μA to 2 A full scale in decade ranges (Option 1950)
Current (AC) 200 μA to 2 A full scale in decade ranges (Option 1950); True RMS; Crest factor <3:1
Resistance 20 Ω to 20 MΩ full scale in decade ranges, 2- or 4-terminal
Temperature –200 °C to +630 °C using a PT-100 (DIN 43760) RTD sensor, 4-wire or 3-wire connection
Reading rate 3½ digits: 3.3 ms integration, 76 rdgs/s; 4½ digits: 16.66 ms integration, 36 rdgs/s; 5½ digits: 100 ms integration, 9 rdgs/s
Power 105–125 V or 210–250 V, 50–400 Hz, 24 VA (with low-voltage transformer option, 90–110 V or 180-220 V)
Connections Analog: 5-way binding posts on front and back, switch-selectable; Digital: Trigger Input and Voltmeter Complete output, rear panel, BNC connectors, TTL level; GPIB

Links

Internals

If option 1950 is installed, two jumper wires (zero-ohm resistors), W102 and W103, are to be removed from the circuit.

Pictures

Components

Some Parts Used in the Keithley 195A

Part Part Number(s) Class Description Used in
AD536 156-1259-00 Monolithic integrated circuit RMS/DC converter DM501A DM502A DM5010 Keithley 177 Keithley 179 Keithley 195A
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 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
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 182 Keithley 193A Keithley 195 Keithley 195A Keithley 196 Keithley 197 Keithley 199 Keithley 220 Keithley 224 Keithley 230 Keithley 263 Keithley 617