Keithley 195A: Difference between revisions
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* [[Media:195A_901_01C.pdf|Keithley 195A manual, Rev.C]] | * [[Media:195A_901_01C.pdf|Keithley 195A manual, Rev.C]] | ||
* [[Media:195A_901_01F.pdf|Keithley 195A manual, Rev.F]] | * [[Media:195A_901_01F.pdf|Keithley 195A manual, Rev.F]] | ||
}} | }} | ||
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). | 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). | |||
If option 1950 is installed, two jumper wires (zero-ohm resistors), W102 and W103 are to be removed from the circuit. | If option 1950 is installed, two jumper wires (zero-ohm resistors), W102 and W103 are to be removed from the circuit. | ||
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{{Spec|Current (AC)|200 μA to 2 A full scale in decade ranges (Option 1950); True RMS; Crest factor <3:1 }} | {{Spec|Current (AC)|200 μA to 2 A full scale in decade ranges (Option 1950); True RMS; Crest factor <3:1 }} | ||
{{Spec|Resistance|20 Ω to 20 MΩ full scale in decade ranges, 2- or 4-terminal }} | {{Spec|Resistance|20 Ω to 20 MΩ full scale in decade ranges, 2- or 4-terminal }} | ||
{{Spec|Temperature|–200 °C to +630 °C using a PT-100 RTD sensor}} | {{Spec|Temperature|–200 °C to +630 °C using a PT-100 (DIN 43760) RTD sensor }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
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<gallery> | <gallery> | ||
Keithley 195A.jpg | Keithley 195A.jpg | ||
Keithley 195A front.jpg | Front panel | Keithley 195A front.jpg | Front panel | ||
Keithley 195A rear.jpg | Keithley 195A rear.jpg | Rear panel | ||
Keithley 195A internal 1.jpg | Internal view, unit with Option 1950 board (bottom left), zero-ohm resistors W102 and W103 are lifted | Keithley 195A internal 1.jpg | Internal view, unit with Option 1950 board (bottom left), zero-ohm resistors W102 and W103 are lifted | ||
Keithley 195A internal 2.jpg | Internal view, unit with Option 1950 board (bottom left) | Keithley 195A internal 2.jpg | Internal view, unit with Option 1950 board (bottom left) |
Revision as of 04:25, 21 May 2024
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). If option 1950 is installed, two jumper wires (zero-ohm resistors), W102 and W103 are to be removed from the circuit.
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) |
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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 |
Pictures
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Front panel
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Rear panel
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Internal view, unit with Option 1950 board (bottom left), zero-ohm resistors W102 and W103 are lifted
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Internal view, unit with Option 1950 board (bottom left)
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Internal view, Option 1950 board flipped up
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Internal view of main board under option/shield
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Internal view towards the rear of the unit