Keithley 2790 SourceMeter Switch System

The Keithley 2790 SourceMeter Switch System is a high voltage, multichannel resistance measurement solution that speeds and simplifies electrical checks of airbag inflators and a variety of other automotive electrical test applications. It is the only commercial instrument that combines all the sourcing, measurement, and signal routing capabilities required to measure insulation resistance and conductor continuity in one compact package. Through the use of plug-in source/switch modules, the Keithley 2790 provides programmable high voltage and low current sourcing, plus multichannel switching support.

The Keithley 2790 uses the forced constant-current method to measure resistances less than 1kW. The amount of current sourced is programmable from 0–50mA. For the 1MW to 1GW resistance ranges, the forced constant-voltage method is used to measure high resistance. This technique optimizes settling speed and reduces noise, allowing faster, high quality insulation resistance measurements. In addition to the resistance measurement functions available through the plug-in source/switch modules, the Keithley 2790’s built-in DMM allows it to make a full range of high precision resistance measurements as well as AC/DC voltage and current, frequency, and temperature measurements.  These supporting measurements simplify creating integrated test solutions for hybrid applications, such as testing complex automotive seating systems, which increasingly combine airbag inflators and seatbelt pre-tensioners, seat heaters, switches, motors, etc. 

Number of Card Slots	2
Maximum Switching Channels	40
DC voltage measurements	0.1µV to 1000V
AC voltage measurements	0.1µV to 750V