4.16.5 Source Current - Measure Voltage
When sourcing current and measuring voltage, there are two connection configurations: 1) Four wire
connection, where the current sourcing terminals and the voltage sense terminals are connected to the
load, as in 4-wire Ohms measurement function; and 2) Two wire connection, where the current source
terminals also serve as voltage sense probes as in the 2-wire Ohms measurement configuration. The first
method eliminates lead resistance errors. One application is in semiconductor diode characterization
discussed in Component Testing above. See Current Source Output for range details. The source
compliance voltage is limited to 4V in both configurations. The maximum measurable voltage is ±2.4V.
Figure 4-19. Sourcing DC current and measuring voltage in the two-wire configuration. This function
can be used for semiconductor parametric tests.
Figure 4-20. Sourcing DC current and measuring voltage in the four-wire configuration eliminates the
error due to lead voltage drop.
4.16.6 Pulse Generator
57
Signametrics
For applications requiring a low frequency pulses at specific width use the built in pulse generator. It can
generate a burst of one to 32,000 pulses, or run continuously. To generate pulses use the
DMMSetFunction(
Pulse_Gen
)
, followed by
DMMSetPulseGen()
. Once in Pulse generator mode,
DMMSetPulseGen
can be repeated to adjust the pulse parameters.
DMMSetPulseGen
sets the positive
