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(B) Set the desired DC plating current. The current can be adjusted from -12uA
(electrode negative) to +12uA (electrode positive) in ~100nA steps by moving the
position of the slider. The exact current that will be applied to the electrode is
indicated adjacent to the slider. The DMM has limited measurement resolution
(39mV) and should be considered approximate, however the calibrated current
reading adjacent to the slider is accurate to within a few nA.
(C) For a fixed plating time per site, set the desired plating Duration. If Test Z
is checked, the electrode impedances will be measured before and after plating
at the specified test frequency. The Pause setting specifies a delay between
electroplating and testing the post-plating impedance, which 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.
For match impedances mode, set the desired Target impedance, test
frequency, and plating Interval. The plating interval specifies how long to apply
the plating current before re-testing the electrode impedance. For example, a
setting of 5 (with a pause of 3) will apply the specified current for 5 seconds, wait
3 seconds before testing the impedance, and alternate between these two modes
every 8 seconds until the target impedance is achieved. The total plating time per
electrode is limited by the Runs setting. Once this number of plating cycles has
occurred the nanoZ will advance to the next channel even if the target impedance
has not been reached. Note that if the initial electrode impedance measurement
is already less than or equal to the target impedance, no current will be applied to
that electrode.
(D) Click the Autoplate button to begin the electroplating sequence.
Clicking on Autoplate again or pressing ESC at any time will pause the plating,
and you will be given the option of skipping the current electrode (Ignore),
continuing the sequence, or stopping.
The (pre- and post-plating) impedance test results and cumulative plating time
per site will be displayed in the Probe report window. The report can be saved by
clicking the icon or selecting File | Save report from the main menu.
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