Keithley 238 High Current Source Measure Unit

The Keithley 238 High Current Source Measure Unit features a load capacitance of 20,000 pF and an output resistance of ≤12 kΩ. The Keithley 236, 237, and 238 Source-Measure Units (SMU) are fully programmable instruments, capable of sourcing and measuring voltage or current simultaneously. These systems are four instruments in one: voltage source, current source, voltage measure, and current measure.

Product Info

Load capacitance	Stable into 20,000 pF (typical)
Memory	Up to 100 points
Filter	n = 2, 4, 8, 16, or 32, selectable
Integration	Fast: 416 µs, 4-digit resolution Medium: 4 ms, 5-digit resolution Line cycle: 16.67 ms (60 Hz), 5-digit resolution, 20.00 ms (50 Hz)
Output resistance	≤12kΩ
Max. output current	±2mA
Offset relative to output HI	±2mV max.
Common mode voltage	200 V max.
Operating temperature	0° to 50°C, 70% relative humidity up to 35°C

Can be used as DC source or meter, sweep source, or full source-measure unit
Sources voltage while measuring current, or sources current while measuring voltage
DC measurement delay, default delay on/off
Local/remote sense
Power: 50/60Hz
IEEE address
Self tests