Keithley 179
The Keithley 179 is a 4½-digit digital multimeter. The 179-20A model adds a 20 A current range.
It was also available re-branded by Racal-Dana as the model 4002.
Key Specifications
Internals
The Keithley 179 uses the Intersil ICL8052/ICL7104 4½-digit DVM chip set.
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Components
Some Parts Used in the Keithley 179
| Voltage | 200 mV to 1200 V (AC: 1000 V) in decade ranges |
|---|---|
| Current | 200 μA to 2 A (179-20A: 20 A) in decade ranges |
| Resistance | 2 kΩ to 20 MΩ in decade ranges |
| Power | 105–125 or 210-250 V, 50–60 Hz, 7 W |
| Features |
|
| 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 |
| Intersil ICL8052 | Monolithic integrated circuit | 4½ digit A/D converter | Keithley 177 • Keithley 179 • Keithley 480 |