6243/44 DC Voltage Current Source/Monitor Operation Manual
4.1.5 Connection for High-Current Measurement
4-8
4.1.5 Connection for High-Current Measurement
Always use a 4-wire connection for high-current measurements.
To eliminate over-shoot and response delays due to test lead inductance, inter-twist the HI OUPUT and
LO OUTPUT test leads and also inter-twist HI SENSE and LO SENSE test leads from output terminals
to DUT terminals as shown in Figure 4-7.
To prevent induced noise, use a shielded, stranded test lead for OUTPUT and SENSE as shown in Figure
4-7.
Be sure to use a shielded test leads, in particular when measuring currents of 1 A or smaller.
For the OUTPUT test lead, use a wire with a diameter larger than those indicated in the table below and
ensure that the voltage differential between OUTPUT and SENSE is 0.5 V or lower for both Hi and Lo
for 6243, and 1.0 V or lower for 6244.
The output range, including this voltage differential, is restricted.
Make sure that the output of HI OUTPUT - LO OUPUT terminals is within the maximum output range.
Figure 4-7 Connection for Heavy-Current Measurement
Table 4-1 Allowable Current and Wire Diameter
Current value Wire size(AWG)
to 2 A 22
to 3.2 A 18
to 10 A 14