Operator's manual for Keithley 236/237/238 Source Measure Units covering safety, operation, specifications, and maintenance.
The manual provides safety instructions and warranty information for the Keithley 236, 237 and 238 Source Measure Units. It emphasizes qualified‑personnel use, shock‑hazard precautions, proper grounding, and the need to disconnect power before servicing.
Technical sections describe the instrument’s source‑measure capabilities, including voltage and current ranges, accuracy, integration times, and memory capacity. The specifications tables list performance data for each model, and the manual explains configuration, programming, and interlock features for reliable measurement and testing.
| Voltage measurement accuracy (4‑digit) | ±(0.033%+ 2.4 mV) |
|---|---|
| Current measurement accuracy (4‑digit) | ±(0.033%+ 2.4 mV) |
| Integration time options | Fast 416 µs, Medium 4 ms, Line Cycle 16.67 ms |
| Memory capacity per sweep | up to 1000 points |
The instrument can store one full sweep of up to 1000 points.