White Matter NanoZ Manuale Utente Scaricare il pdf (Pagina 31)

waveform – user-supplied waveform to be generated during electroplating. Units

are amperes.

Return values: raw_waveform – device-specific, raw waveform which is produced

on the basis of user-supplied waveform, taking into account device calibration.

achieved_current – values of electroplating current, in amperes, which are based

on the raw_waveform values returned by this function.

Remarks: This function converts the user-specified electroplating currents into

raw values that are output by the nanoZ's 8-bit DAC during waveform generation.

An attempt is made to produce a current waveform that is as close as possible to

that requested, taking into account the device calibration.

The application can modify the raw waveform prior to uploading it into nanoZ, for

example, to implement dithering, a technique which in some cases can overcome

inaccuracies due to the 8-bit DAC quantization.

As there is a low pass filter after the waveform-generation DAC, fast changes in

electroplating current will be dampened.

startplating

Starts electroplating.

Usage: nanoz(‘startplating’, handle, raw_waveform, interpol);

Arguments: handle – handle to an opened device returned by the open function;

raw_waveform – waveform of electroplating current to be generated, in device-

specific units, which can be obtained from the preparewaveform function;

interpol – interpolation factor to be used during waveform generation.

Return value: none.

Remarks: This function uploads the user-specified waveform into the nanoZ's

memory and starts the electroplating process. During electroplating the voltage

across the target electrode is constantly monitored. To prevent a possible buffer

overrun the user application must call the getplatingdata function to fetch the

results of this monitoring.

The exact moment when electroplating actually starts is not predictable.

Depending on the waveform length, uploading the waveform may take some time

and delay the start of electroplating. When the electroplating duration must be

exactly controlled the application should determine the exposure time from the

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White Matter NanoZ Manuale Utente Pagina 31