5-6
inserted between the reference and auxiliary electrodes to stabilize the circuit, and
the testing is continued until the desired level of compensation is achieved or the
Overshoot value is exceeded (if this occurs, the amount of compensation to be
used in the experiment is slightly decreased from this value). One way to increase
the level of compensation is to increase the Overshoot percentage. It is usually
safe to go up to 40%.
max
I
min
I
Figure 5-4. "Ringing" of the current response.
If the desired compensation cannot be obtained using Auto iR Compensation,
then a user-specified compensation resistance can be applied using the Manual
option. If this option is used, then a stabilizing capacitor may also need to be
selected manually (see Stabilizing Capacitor in the Method menu)
Figure 5-5. iR Compensation
dialog box.
1) Using Auto iR Compensation:
a) Select the Auto option from Status.
b) Select the appropriate option from Enable. If Once is chosen, then only
the next experiment performed will be iR compensated. If Always is
selected, then the amount of compensation determined by the iR Test will
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