Keithley 485: Difference between revisions
Jump to navigation
Jump to search
(Created page with "{{Instrument Sidebar |manufacturer=Keithley |model=485 |class= |series= |summary=Picoamperemeter |image=Keithley 485 front.jpg |caption=Keithley 485 front |introduced=(?) |discontinued=(?) |designers= |manuals= * ''please add'' }} The '''Keithley 485 Picoamperemeter''' is a dedicated picoamperemeter from the mid-1980s, from the same generation and model series as the better-known Keithley 197 "Microvolt DMM". The 485 operates as a feedback (transimpedance) ampereme...") |
No edit summary |
||
| Line 2: | Line 2: | ||
|manufacturer=Keithley | |manufacturer=Keithley | ||
|model=485 | |model=485 | ||
|class= | |class=Multimeter | ||
|series= | |series= | ||
|summary=Picoamperemeter | |summary=Picoamperemeter | ||
Revision as of 09:54, 19 May 2024
The Keithley 485 Picoamperemeter is a dedicated picoamperemeter from the mid-1980s, from the same generation and model series as the better-known Keithley 197 "Microvolt DMM".
The 485 operates as a feedback (transimpedance) amperemeter (i.e. the input burden is constantly low at less than 0.2 mV), has a resolution of 4½ digits (19999), some rudimentary built-in logging capabilities, as well as an optional GPIB interface.
This instrument measures only (low) currents, in seven decadic ranges from 2 nA to 2 mA full scale. In the 2 nA ranget The least significant digit resolves 100 fA (0.1 pA).
Key Specifications
| Current | 7 decade ranges, 2 nA to 2 mA full scale |
|---|---|
| Display | 4½ digits, LED |