Keithley 2450 User Manual

Model 2450
Interactive SourceMeter® Instrument Reference Manual Section 2:
General operation
2450-901-01 Rev. B/September 2013 2-89
Resistance measurement methods
From the front panel, you can use one of the following methods to measure resistance with the
Model 2450:
• Press FUNCTION and select source current and measure resistance
• Press FUNCTION and select source voltage and measure resistance
• Press QUICKSET and select Ohmmeter. When Ohmmeter is selected, the source current and
source limit are set automatically.
From a remote interface, you can use one of following methods to measure resistance with the
Model 2450:
• Source voltage, measure current, and set measure units to ohms
• Source current, measure voltage, and set measure units to ohms
• Set the measure function to resistance. This sets the instrument to auto-ohms, which causes the
instrument to set the source current and source limit automatically.
Each of these methods is described in the following topics.
Source voltage, measure current, and read ohms
If you want to make resistance readings by sourcing voltage and measuring current, you can use this
method.
The examples below use a 100 kΩ device under test. The code:
• Makes five readings by sourcing 5 V
• Measures current with autorange enabled
• Sets the measure units to ohms
• Uses offset compensation
• Retrieves the source and measure values
Even though the measurement units are in ohms, the measurement range is 10 µA.

Keithley 2450 Specifications

General

Model	2450
Category	SourceMeter
Voltage Source Range	±200 V
Current Source Range	±1 A
DC Voltage	200 V
DC Current	1 A
Power Output	20 W
Resolution	6.5 digits
Display	5-inch capacitive touchscreen
Operating Temperature	0°C to 50°C
Connectivity	USB, LAN, GPIB
Dimensions	213 mm × 88 mm × 370 mm