Overview
Repair workplace for 7.5d High-performance Keithley 2001 DMM
*Full schematics and documentation*
Current status:
#5 - Reference calibrated unit fail FE on analog, broken mains fuse 500mA
#2 - Fixed, working fine now. Need calibration
#1 - work ok, offset on 1000VDC, have selftest errors sometimes
#2 - fixed ADC board, used screen for 2400
#3 - parts scrap, used screen for 2001 #4
#4 - work ok, taken #3 screen, max package, have ohm problem, selftest errors, VDC is ok.
#6 - ?
| Technical specs | |||
| MFG | Keithley | ||
| Resolution, digits | 7 1/2 | ||
| DCV Input | 200mV - 1100V | 24+4 - 41+6 ppm | 10nV |
| ACV Input | 200mV - 750V | 0.03% - 0.3% | 10nV |
| OHM Input | 20 Ω - 1 GΩ | 32+4 - 150+4.5ppm | 1uΩ |
| DCI Input | 200uA - 2.1A | 400+20 - 900+20 ppm | 10pA |
| ACI Input | 200uA - 2.1A | 0.13% - 0.315% | 10pA |
| DCI In-curcuit | 100uA - 12A | 5%+2 | 1mΩ - 10Ω typ. |
| Thermal measurements | Thermocouple J,K,N,T,E,R,S,B, RTD, -200°C +1000 °C | ||
| Frequency counter | 1Hz-15MHz | 0.03% of reading, 5 digit | |
| Input frequency | 20 Hz - 2 MHz | ||
| Scan feature | Yes, 2001-SCAN or 2001-TCSCAN cards | ||
| Interface | GPIB, Digital in/Digital out | ||
| Dimensions | 90 x 370 x 214 mm | ||