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Example : with the 10 µA current range and if 5 µA is the current applied by thePGZ or PGP201 source, the Vg(ext.) that can be applied at the “Vg IN” (or “GEN.”)socket by the generator must be between -1 000 mV and +500 mV because:Vg (int.) = 5 10 -6 (5 µA) x 100 kOhm (10 µA range resistor) = 500 mVSo, we must have -1 000 mV ≤ Vg (ext.) + 500 mV ≤ 1 000 mVand -1 000 mV ≤ Vg (ext.) ≤ 1 000 mVThus -1 000 mV ≤ Vg (ext.) ≤ 500 mV. Switch on the PGZ or PGP201.. In VoltaMaster 4, insert a Vg IN On/Off method before the method you want torun with the external generator source option.. Edit the Vg IN On/Off method with the “Int. + ext. source” option selected (acheck mark is displayed when the option is selected).. Start a cycle from the personal computer. The algebraic sum of the 2 potentialor the 2 current signals (potentiostat and signal generator) is imposed on theelectrodes.The Vg IN On/Off method is valid when placed before the following methodsprovided that the Dynamic ohmic drop compensation (if relevant) is not selected inthese methods: Chrono Amperometry, Chrono Coulometry, Chrono Potentiometry,Pot. Interactive CV, Pot. Cyclic Voltammetry, Pot. Step by step CV, Pot. Tutorial CA,Pot. Tutorial CV, Pot. Low Current CV, Pitting corrosion, Gal. Cyclic Voltammetry,Gal. Logarithmic CV, Pot. Low Current CA. For all other methods and if the“Dynamic” ohmic drop compensation is selected, VoltaMaster 4 does not add thepotential applied by a device connected to the Vg IN socket irrespective of yourselection made in the Vg IN On/Off method.VoltaLab 21/06/10/40/50/80 197Section 6, Chapter 11: External signal generator - Vg IN socket