Multichannel Systems nanoZ manual - Manual (Page 24)

nanoZ User Manual
20
delay between the activating cycle and testing the post-activation impedance. It
may be necessary for some plating procedures where the test signal can take
several seconds to settle to baseline due to charge buildup on the electrode site.
In most situations this delay can be set to 0~1 second. Use the scope display to
check that the impedance test signal is at or close to baseline, and increase the
delay if the ʻtest signal clippedʼ warning is reported.
(D) Click the Activate probe button to begin the activation sequence.
To illustrate a typical activation sequence, using the settings shown above as an
example (i.e. Z test enabled, 1Hz activation frequency, 25% duty cycle, currents -
3uA to +5uA, duration 30s, pause 3s), the nanoZ will test the pre-plating
electrode impedance at 502Hz, apply 30 square wave activation cycles
comprising a 3uA electrode-negative current for 250ms immediately followed by
a 5uA electrode-positive current for 750ms. After a pause of 3s the post-plating
electrode impedance will be measured, and the nanoZ will advance to the next
selected electrode site.
Clicking on Activate probe again or pressing ESC at any time will pause the
activation, and you will be given the option of skipping the current electrode
(Ignore), continuing, or stopping.
The (pre- and post-activation) impedance test results in the Probe report can be
saved by clicking the icon or selecting File | Save report from the main menu.