S535 Wafer Acceptance Test System Administrative Guide
Section 5: Instrument specifications and documentation
S535-924-01 Rev. B / January 2019
5-3
Sourcing and measuring
The following instruments provide S535 source-measure capabilities.
Model 2636B System SourceMeter Instrument
The 2636B Dual-Channel System SourceMeter
®
Instrument is a 6-1/2 digit, two-channel
source-measure unit (SMU) that simultaneously sources and measures voltage and current. You can
have up to eight 2636B SMUs (for a total of 16 SMU channels) in the S535 system.
Figure 51: 2636B System SourceMeter Instrument
Features include:
Maximum voltage source-measure range: 200 V
Measurement resolution: 0.1 fA current, 100 nV voltage
Power: 20 W
Model 2461-SYS System SourceMeter Instrument
The Keithley Instruments Model 2461-SYS is an interactive SourceMeter
®
instrument specifically for
use in Keithley S535 parametric test systems. The 2461-SYS is a modified version of the Model 2461
System SourceMeter instrument, with fewer high-current ranges.
The 2461-SYS has the same current ranges as the 2461 up to 1 A, but does not have the 4 A, 5 A,
7 A, and 10 A ranges. The voltage ranges for the 2461-SYS are identical to the voltage ranges on the
2461.
Figure 52: 2461-SYS System SourceMeter
®
Instrument