Instruction Manual

3.2 VA measurement modes

797 VA Computrace – Software

Voltage step time > Modulation time + 450 ms (HMDE/RDE)

Voltage step time > Modulation time + 470 ms (DME)

Voltage step time > Modulation time + Drop size * 40 ms + 450

(SMDE)

• Modulation time > 2 / Frequency

• The measurement time t (i) is defined as follows:

t (i) = Modulation time / 2

CVS - Cyclic Voltammetric Stripping

General:

CVS or Cyclic Voltammetric Stripping is used to determine

organic additives in electroplating electrolytes. The CVS measuring

mode can be set for the exploratory and determination mode by

selecting CVS - Cyclic Voltammetric Stripping for the Mode parame-

ter in the EXPLORATORY SPECIFICATION or WORKING METHOD

SPECIFICATIONS

window.

Description:

For Cyclic Voltammetric Stripping, the potential of an RDE (e.g. Pt)

is cycled at a constant rate in a plating bath. The current i is meas-

ured as a function of the voltage U. The curves registered in the

last cycles are stored and its peaks can be evaluated using linear,

polynomial, horizontal or exponential baselines.

cath

Conditioning

Plating

Stripping

Cleaning

Conditioning

Stripping

Plating